./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix035_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix035_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix035_pso.opt_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix035_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:07:15,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:07:15,321 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:07:15,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:07:15,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:07:15,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:07:15,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:07:15,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:07:15,354 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:07:15,357 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:07:15,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:07:15,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:07:15,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:07:15,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:07:15,359 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:07:15,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:07:15,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:07:15,360 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:07:15,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:07:15,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:07:15,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:07:15,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:07:15,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:07:15,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:07:15,362 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:07:15,362 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:07:15,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:07:15,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:07:15,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:07:15,363 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:07:15,364 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:07:15,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:07:15,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:07:15,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:07:15,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:07:15,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:07:15,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:07:15,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:07:15,365 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:07:15,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:07:15,365 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:07:15,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:07:15,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:07:15,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:07:15,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:07:15,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:07:15,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:07:15,617 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:07:15,618 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:07:15,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix035_pso.opt_tso.opt.yml/witness.yml [2024-06-04 15:07:15,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:07:15,799 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:07:15,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix035_pso.opt_tso.opt.i [2024-06-04 15:07:16,927 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:07:17,119 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:07:17,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix035_pso.opt_tso.opt.i [2024-06-04 15:07:17,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/316f69b3c/c146c9d8921944099dd99d36eef17bd2/FLAG7f1b4525d [2024-06-04 15:07:17,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/316f69b3c/c146c9d8921944099dd99d36eef17bd2 [2024-06-04 15:07:17,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:07:17,156 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:07:17,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:07:17,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:07:17,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:07:17,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:07:15" (1/2) ... [2024-06-04 15:07:17,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6373c4a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:07:17, skipping insertion in model container [2024-06-04 15:07:17,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:07:15" (1/2) ... [2024-06-04 15:07:17,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@97381d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:07:17, skipping insertion in model container [2024-06-04 15:07:17,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:07:17" (2/2) ... [2024-06-04 15:07:17,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6373c4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17, skipping insertion in model container [2024-06-04 15:07:17,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:07:17" (2/2) ... [2024-06-04 15:07:17,167 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:07:17,247 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:07:17,248 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-04 15:07:17,249 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-04 15:07:17,249 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] ((((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-04 15:07:17,249 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:07:17,249 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-04 15:07:17,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:07:17,636 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:07:17,646 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:07:17,762 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:07:17,801 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:07:17,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17 WrapperNode [2024-06-04 15:07:17,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:07:17,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:07:17,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:07:17,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:07:17,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,864 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 134 [2024-06-04 15:07:17,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:07:17,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:07:17,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:07:17,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:07:17,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,882 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,903 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 15:07:17,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:07:17,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:07:17,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:07:17,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:07:17,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (1/1) ... [2024-06-04 15:07:17,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:07:17,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:07:17,950 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 15:07:17,961 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 15:07:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:07:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:07:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:07:17,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:07:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:07:17,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:07:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 15:07:17,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 15:07:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:07:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:07:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:07:17,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:07:17,981 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 15:07:18,079 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:07:18,081 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:07:18,472 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:07:18,473 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:07:18,603 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:07:18,603 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:07:18,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:07:18 BoogieIcfgContainer [2024-06-04 15:07:18,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:07:18,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:07:18,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:07:18,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:07:18,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:07:15" (1/4) ... [2024-06-04 15:07:18,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbfefb5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:07:18, skipping insertion in model container [2024-06-04 15:07:18,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:07:17" (2/4) ... [2024-06-04 15:07:18,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbfefb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:07:18, skipping insertion in model container [2024-06-04 15:07:18,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:07:17" (3/4) ... [2024-06-04 15:07:18,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbfefb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:07:18, skipping insertion in model container [2024-06-04 15:07:18,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:07:18" (4/4) ... [2024-06-04 15:07:18,612 INFO L112 eAbstractionObserver]: Analyzing ICFG mix035_pso.opt_tso.opt.i [2024-06-04 15:07:18,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:07:18,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 15:07:18,624 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:07:18,661 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:07:18,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-04 15:07:18,716 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-04 15:07:18,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:07:18,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:07:18,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-04 15:07:18,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-04 15:07:18,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:07:18,740 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;@9c5bbb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:07:18,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 15:07:18,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:07:18,745 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:07:18,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:07:18,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:18,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:07:18,746 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 15:07:18,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:18,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1632138003, now seen corresponding path program 1 times [2024-06-04 15:07:18,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:18,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271008319] [2024-06-04 15:07:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:18,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:19,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:19,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271008319] [2024-06-04 15:07:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271008319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:19,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:07:19,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696334139] [2024-06-04 15:07:19,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:19,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:07:19,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:07:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:07:19,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-04 15:07:19,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:19,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:19,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-04 15:07:19,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:20,252 INFO L124 PetriNetUnfolderBase]: 869/1439 cut-off events. [2024-06-04 15:07:20,253 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-06-04 15:07:20,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1439 events. 869/1439 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7341 event pairs, 566 based on Foata normal form. 1/1386 useless extension candidates. Maximal degree in co-relation 2804. Up to 1315 conditions per place. [2024-06-04 15:07:20,263 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 32 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-04 15:07:20,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 175 flow [2024-06-04 15:07:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:07:20,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:07:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-04 15:07:20,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-06-04 15:07:20,273 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 81 transitions. [2024-06-04 15:07:20,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 175 flow [2024-06-04 15:07:20,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 15:07:20,276 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-04 15:07:20,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-04 15:07:20,280 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-04 15:07:20,280 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-04 15:07:20,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:20,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:20,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:20,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:07:20,281 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 15:07:20,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash -821543540, now seen corresponding path program 1 times [2024-06-04 15:07:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899085992] [2024-06-04 15:07:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:20,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:20,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899085992] [2024-06-04 15:07:20,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899085992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:20,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:07:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364921338] [2024-06-04 15:07:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:20,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:07:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:07:20,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:07:21,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-04 15:07:21,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 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 15:07:21,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:21,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-04 15:07:21,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:21,275 INFO L124 PetriNetUnfolderBase]: 996/1590 cut-off events. [2024-06-04 15:07:21,275 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-06-04 15:07:21,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3607 conditions, 1590 events. 996/1590 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8017 event pairs, 519 based on Foata normal form. 3/1570 useless extension candidates. Maximal degree in co-relation 3592. Up to 1484 conditions per place. [2024-06-04 15:07:21,285 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 40 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-04 15:07:21,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 244 flow [2024-06-04 15:07:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:07:21,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:07:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-04 15:07:21,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5930232558139535 [2024-06-04 15:07:21,289 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 102 transitions. [2024-06-04 15:07:21,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 244 flow [2024-06-04 15:07:21,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:07:21,291 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-04 15:07:21,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-04 15:07:21,292 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-04 15:07:21,292 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-04 15:07:21,293 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 15:07:21,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:21,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:21,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:07:21,296 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 15:07:21,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:21,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1879442065, now seen corresponding path program 1 times [2024-06-04 15:07:21,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:21,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982216378] [2024-06-04 15:07:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:21,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:22,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982216378] [2024-06-04 15:07:22,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982216378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:22,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:22,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:07:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599224601] [2024-06-04 15:07:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:07:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:07:22,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:07:22,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:07:22,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 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 15:07:22,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:22,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:07:22,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:22,772 INFO L124 PetriNetUnfolderBase]: 1265/1984 cut-off events. [2024-06-04 15:07:22,772 INFO L125 PetriNetUnfolderBase]: For 1076/1076 co-relation queries the response was YES. [2024-06-04 15:07:22,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4983 conditions, 1984 events. 1265/1984 cut-off events. For 1076/1076 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9784 event pairs, 445 based on Foata normal form. 6/1959 useless extension candidates. Maximal degree in co-relation 4966. Up to 1828 conditions per place. [2024-06-04 15:07:22,782 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 52 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-06-04 15:07:22,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 356 flow [2024-06-04 15:07:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:07:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:07:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-04 15:07:22,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387596899224806 [2024-06-04 15:07:22,784 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 6 states and 139 transitions. [2024-06-04 15:07:22,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 356 flow [2024-06-04 15:07:22,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 70 transitions, 336 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 15:07:22,786 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 183 flow [2024-06-04 15:07:22,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-04 15:07:22,787 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2024-06-04 15:07:22,787 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 183 flow [2024-06-04 15:07:22,787 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 15:07:22,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:22,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:22,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:07:22,788 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:22,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1919090944, now seen corresponding path program 1 times [2024-06-04 15:07:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:22,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930967242] [2024-06-04 15:07:22,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:22,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:23,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:23,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930967242] [2024-06-04 15:07:23,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930967242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:23,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:23,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:07:23,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211400958] [2024-06-04 15:07:23,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:23,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:07:23,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:23,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:07:23,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:07:23,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:07:23,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:23,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:23,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:07:23,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:23,872 INFO L124 PetriNetUnfolderBase]: 1085/1811 cut-off events. [2024-06-04 15:07:23,873 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2024-06-04 15:07:23,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4869 conditions, 1811 events. 1085/1811 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9338 event pairs, 442 based on Foata normal form. 4/1807 useless extension candidates. Maximal degree in co-relation 4850. Up to 1611 conditions per place. [2024-06-04 15:07:23,881 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 43 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-04 15:07:23,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 342 flow [2024-06-04 15:07:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:07:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:07:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-04 15:07:23,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-04 15:07:23,882 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 183 flow. Second operand 6 states and 119 transitions. [2024-06-04 15:07:23,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 342 flow [2024-06-04 15:07:23,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 313 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 15:07:23,885 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 218 flow [2024-06-04 15:07:23,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-04 15:07:23,886 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-06-04 15:07:23,886 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 218 flow [2024-06-04 15:07:23,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:23,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:23,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:23,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:07:23,887 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 15:07:23,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1425082109, now seen corresponding path program 1 times [2024-06-04 15:07:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:23,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326167713] [2024-06-04 15:07:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:23,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:24,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:24,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326167713] [2024-06-04 15:07:24,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326167713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:24,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:24,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:07:24,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300666651] [2024-06-04 15:07:24,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:24,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:07:24,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:07:24,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:07:24,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:24,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 218 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 15:07:24,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:24,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:24,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:25,170 INFO L124 PetriNetUnfolderBase]: 1277/2018 cut-off events. [2024-06-04 15:07:25,170 INFO L125 PetriNetUnfolderBase]: For 3037/3037 co-relation queries the response was YES. [2024-06-04 15:07:25,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6008 conditions, 2018 events. 1277/2018 cut-off events. For 3037/3037 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9927 event pairs, 487 based on Foata normal form. 4/2011 useless extension candidates. Maximal degree in co-relation 5986. Up to 1826 conditions per place. [2024-06-04 15:07:25,181 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 54 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-04 15:07:25,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 468 flow [2024-06-04 15:07:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:07:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:07:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-04 15:07:25,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 15:07:25,183 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 218 flow. Second operand 6 states and 129 transitions. [2024-06-04 15:07:25,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 468 flow [2024-06-04 15:07:25,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 446 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 15:07:25,185 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 280 flow [2024-06-04 15:07:25,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-06-04 15:07:25,186 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2024-06-04 15:07:25,186 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 280 flow [2024-06-04 15:07:25,187 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 15:07:25,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:25,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:25,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:07:25,187 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 15:07:25,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:25,188 INFO L85 PathProgramCache]: Analyzing trace with hash -760707647, now seen corresponding path program 2 times [2024-06-04 15:07:25,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:25,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096771554] [2024-06-04 15:07:25,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:25,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:25,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:25,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096771554] [2024-06-04 15:07:25,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096771554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:25,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:25,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:07:25,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509417247] [2024-06-04 15:07:25,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:25,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:07:25,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:25,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:07:25,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:07:25,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:25,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 280 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 15:07:25,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:25,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:25,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:26,377 INFO L124 PetriNetUnfolderBase]: 1267/2006 cut-off events. [2024-06-04 15:07:26,377 INFO L125 PetriNetUnfolderBase]: For 4382/4386 co-relation queries the response was YES. [2024-06-04 15:07:26,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 2006 events. 1267/2006 cut-off events. For 4382/4386 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9883 event pairs, 485 based on Foata normal form. 8/2004 useless extension candidates. Maximal degree in co-relation 6425. Up to 1818 conditions per place. [2024-06-04 15:07:26,387 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 50 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-04 15:07:26,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 72 transitions, 456 flow [2024-06-04 15:07:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:07:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:07:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-04 15:07:26,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-04 15:07:26,388 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 280 flow. Second operand 6 states and 123 transitions. [2024-06-04 15:07:26,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 72 transitions, 456 flow [2024-06-04 15:07:26,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 425 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-04 15:07:26,395 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 289 flow [2024-06-04 15:07:26,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-06-04 15:07:26,397 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2024-06-04 15:07:26,398 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 289 flow [2024-06-04 15:07:26,398 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 15:07:26,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:26,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:26,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:07:26,398 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 15:07:26,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash 206911127, now seen corresponding path program 1 times [2024-06-04 15:07:26,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:26,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091881492] [2024-06-04 15:07:26,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:26,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:27,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:27,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091881492] [2024-06-04 15:07:27,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091881492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:27,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:27,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:07:27,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951423339] [2024-06-04 15:07:27,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:27,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:07:27,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:27,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:07:27,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:07:27,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:27,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 289 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 15:07:27,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:27,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:27,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:27,890 INFO L124 PetriNetUnfolderBase]: 1289/2044 cut-off events. [2024-06-04 15:07:27,890 INFO L125 PetriNetUnfolderBase]: For 5260/5260 co-relation queries the response was YES. [2024-06-04 15:07:27,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6692 conditions, 2044 events. 1289/2044 cut-off events. For 5260/5260 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10197 event pairs, 513 based on Foata normal form. 4/2034 useless extension candidates. Maximal degree in co-relation 6667. Up to 1876 conditions per place. [2024-06-04 15:07:27,903 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 62 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2024-06-04 15:07:27,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 533 flow [2024-06-04 15:07:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:07:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:07:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 15:07:27,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47840531561461797 [2024-06-04 15:07:27,905 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 289 flow. Second operand 7 states and 144 transitions. [2024-06-04 15:07:27,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 533 flow [2024-06-04 15:07:27,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 487 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:07:27,910 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 309 flow [2024-06-04 15:07:27,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-06-04 15:07:27,911 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2024-06-04 15:07:27,911 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 309 flow [2024-06-04 15:07:27,911 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 15:07:27,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:27,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:27,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:07:27,912 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 15:07:27,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:27,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1239447737, now seen corresponding path program 2 times [2024-06-04 15:07:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:27,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714097118] [2024-06-04 15:07:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:28,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:28,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714097118] [2024-06-04 15:07:28,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714097118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:28,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:28,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:07:28,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188247125] [2024-06-04 15:07:28,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:28,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:07:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:28,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:07:28,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:07:28,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:28,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 309 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 15:07:28,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:28,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:28,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:29,324 INFO L124 PetriNetUnfolderBase]: 1311/2090 cut-off events. [2024-06-04 15:07:29,325 INFO L125 PetriNetUnfolderBase]: For 7102/7102 co-relation queries the response was YES. [2024-06-04 15:07:29,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7259 conditions, 2090 events. 1311/2090 cut-off events. For 7102/7102 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10468 event pairs, 445 based on Foata normal form. 4/2081 useless extension candidates. Maximal degree in co-relation 7234. Up to 1797 conditions per place. [2024-06-04 15:07:29,336 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 58 selfloop transitions, 27 changer transitions 0/91 dead transitions. [2024-06-04 15:07:29,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 631 flow [2024-06-04 15:07:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:07:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:07:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-04 15:07:29,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983388704318937 [2024-06-04 15:07:29,344 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 309 flow. Second operand 7 states and 150 transitions. [2024-06-04 15:07:29,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 631 flow [2024-06-04 15:07:29,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 589 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 15:07:29,349 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 391 flow [2024-06-04 15:07:29,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=391, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-04 15:07:29,351 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2024-06-04 15:07:29,351 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 391 flow [2024-06-04 15:07:29,351 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 15:07:29,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:29,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:29,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:07:29,352 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 15:07:29,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:29,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2107099049, now seen corresponding path program 3 times [2024-06-04 15:07:29,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:29,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341750426] [2024-06-04 15:07:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:29,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:30,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:30,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341750426] [2024-06-04 15:07:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341750426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:30,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:30,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:07:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642709027] [2024-06-04 15:07:30,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:30,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:07:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:07:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:07:30,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:30,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 391 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 15:07:30,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:30,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:30,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:30,596 INFO L124 PetriNetUnfolderBase]: 1301/2075 cut-off events. [2024-06-04 15:07:30,596 INFO L125 PetriNetUnfolderBase]: For 9351/9353 co-relation queries the response was YES. [2024-06-04 15:07:30,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 2075 events. 1301/2075 cut-off events. For 9351/9353 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10329 event pairs, 454 based on Foata normal form. 4/2066 useless extension candidates. Maximal degree in co-relation 7635. Up to 1789 conditions per place. [2024-06-04 15:07:30,607 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 54 selfloop transitions, 26 changer transitions 0/86 dead transitions. [2024-06-04 15:07:30,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 607 flow [2024-06-04 15:07:30,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:07:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:07:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-04 15:07:30,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47840531561461797 [2024-06-04 15:07:30,608 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 391 flow. Second operand 7 states and 144 transitions. [2024-06-04 15:07:30,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 607 flow [2024-06-04 15:07:30,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 554 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-04 15:07:30,615 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 398 flow [2024-06-04 15:07:30,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-06-04 15:07:30,615 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-06-04 15:07:30,616 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 398 flow [2024-06-04 15:07:30,616 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 15:07:30,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:30,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:30,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:07:30,616 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 15:07:30,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:30,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1246123091, now seen corresponding path program 1 times [2024-06-04 15:07:30,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:30,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292002794] [2024-06-04 15:07:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:30,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292002794] [2024-06-04 15:07:31,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292002794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:31,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:31,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:07:31,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468388131] [2024-06-04 15:07:31,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:31,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:07:31,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:31,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:07:31,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:07:31,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:07:31,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:31,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:31,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:07:31,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:32,221 INFO L124 PetriNetUnfolderBase]: 1123/1875 cut-off events. [2024-06-04 15:07:32,222 INFO L125 PetriNetUnfolderBase]: For 8972/8972 co-relation queries the response was YES. [2024-06-04 15:07:32,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6953 conditions, 1875 events. 1123/1875 cut-off events. For 8972/8972 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9653 event pairs, 386 based on Foata normal form. 4/1865 useless extension candidates. Maximal degree in co-relation 6925. Up to 1649 conditions per place. [2024-06-04 15:07:32,230 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 67 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-04 15:07:32,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 649 flow [2024-06-04 15:07:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:07:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:07:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-04 15:07:32,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2024-06-04 15:07:32,232 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 398 flow. Second operand 7 states and 143 transitions. [2024-06-04 15:07:32,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 649 flow [2024-06-04 15:07:32,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 88 transitions, 575 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:07:32,237 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 410 flow [2024-06-04 15:07:32,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-06-04 15:07:32,237 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2024-06-04 15:07:32,237 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 410 flow [2024-06-04 15:07:32,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:32,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:32,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:32,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:07:32,238 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:32,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:32,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1781372754, now seen corresponding path program 1 times [2024-06-04 15:07:32,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:32,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591635733] [2024-06-04 15:07:32,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:32,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591635733] [2024-06-04 15:07:32,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591635733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:32,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:32,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:07:32,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202230331] [2024-06-04 15:07:32,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:32,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:07:32,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:32,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:07:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:07:33,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-04 15:07:33,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:33,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:33,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-04 15:07:33,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:33,285 INFO L124 PetriNetUnfolderBase]: 1015/1751 cut-off events. [2024-06-04 15:07:33,285 INFO L125 PetriNetUnfolderBase]: For 10269/10271 co-relation queries the response was YES. [2024-06-04 15:07:33,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6825 conditions, 1751 events. 1015/1751 cut-off events. For 10269/10271 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9351 event pairs, 395 based on Foata normal form. 3/1728 useless extension candidates. Maximal degree in co-relation 6795. Up to 1528 conditions per place. [2024-06-04 15:07:33,293 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 59 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-06-04 15:07:33,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 582 flow [2024-06-04 15:07:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:07:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:07:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-04 15:07:33,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-04 15:07:33,294 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 410 flow. Second operand 5 states and 105 transitions. [2024-06-04 15:07:33,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 582 flow [2024-06-04 15:07:33,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 541 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-04 15:07:33,301 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 417 flow [2024-06-04 15:07:33,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-06-04 15:07:33,301 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-06-04 15:07:33,301 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 417 flow [2024-06-04 15:07:33,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:33,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:33,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:33,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:07:33,302 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:33,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash -612017814, now seen corresponding path program 1 times [2024-06-04 15:07:33,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:33,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659668616] [2024-06-04 15:07:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:33,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:34,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659668616] [2024-06-04 15:07:34,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659668616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:34,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:34,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:07:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349384194] [2024-06-04 15:07:34,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:07:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:07:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:07:34,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:07:34,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:34,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:34,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:07:34,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:34,517 INFO L124 PetriNetUnfolderBase]: 1167/1932 cut-off events. [2024-06-04 15:07:34,517 INFO L125 PetriNetUnfolderBase]: For 13965/13967 co-relation queries the response was YES. [2024-06-04 15:07:34,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8032 conditions, 1932 events. 1167/1932 cut-off events. For 13965/13967 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10040 event pairs, 467 based on Foata normal form. 3/1929 useless extension candidates. Maximal degree in co-relation 8001. Up to 1751 conditions per place. [2024-06-04 15:07:34,528 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 61 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-04 15:07:34,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 605 flow [2024-06-04 15:07:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:07:34,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:07:34,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-04 15:07:34,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-04 15:07:34,530 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 417 flow. Second operand 6 states and 117 transitions. [2024-06-04 15:07:34,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 605 flow [2024-06-04 15:07:34,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 579 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:07:34,537 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 449 flow [2024-06-04 15:07:34,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=449, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-06-04 15:07:34,538 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-06-04 15:07:34,538 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 449 flow [2024-06-04 15:07:34,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:34,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:34,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:34,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:07:34,540 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 15:07:34,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1701548530, now seen corresponding path program 1 times [2024-06-04 15:07:34,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:34,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299953143] [2024-06-04 15:07:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:34,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:35,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299953143] [2024-06-04 15:07:35,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299953143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:35,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:35,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:07:35,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150858916] [2024-06-04 15:07:35,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:35,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:07:35,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:35,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:07:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:07:35,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:35,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 449 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 15:07:35,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:35,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:35,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:36,199 INFO L124 PetriNetUnfolderBase]: 1511/2408 cut-off events. [2024-06-04 15:07:36,199 INFO L125 PetriNetUnfolderBase]: For 22817/22817 co-relation queries the response was YES. [2024-06-04 15:07:36,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10772 conditions, 2408 events. 1511/2408 cut-off events. For 22817/22817 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12512 event pairs, 425 based on Foata normal form. 16/2423 useless extension candidates. Maximal degree in co-relation 10740. Up to 1921 conditions per place. [2024-06-04 15:07:36,212 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 95 selfloop transitions, 19 changer transitions 0/121 dead transitions. [2024-06-04 15:07:36,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 895 flow [2024-06-04 15:07:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:07:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:07:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-04 15:07:36,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48578811369509045 [2024-06-04 15:07:36,214 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 449 flow. Second operand 9 states and 188 transitions. [2024-06-04 15:07:36,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 895 flow [2024-06-04 15:07:36,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 121 transitions, 859 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-04 15:07:36,226 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 495 flow [2024-06-04 15:07:36,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=495, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2024-06-04 15:07:36,227 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2024-06-04 15:07:36,227 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 495 flow [2024-06-04 15:07:36,227 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 15:07:36,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:36,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:36,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:07:36,228 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 15:07:36,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1016838898, now seen corresponding path program 2 times [2024-06-04 15:07:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:36,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021475000] [2024-06-04 15:07:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:36,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:37,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:37,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021475000] [2024-06-04 15:07:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021475000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:37,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:37,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:07:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526322463] [2024-06-04 15:07:37,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:37,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:07:37,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:37,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:07:37,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:07:37,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:37,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 495 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 15:07:37,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:37,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:37,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:37,807 INFO L124 PetriNetUnfolderBase]: 1475/2353 cut-off events. [2024-06-04 15:07:37,808 INFO L125 PetriNetUnfolderBase]: For 24468/24468 co-relation queries the response was YES. [2024-06-04 15:07:37,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 2353 events. 1475/2353 cut-off events. For 24468/24468 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12143 event pairs, 529 based on Foata normal form. 20/2372 useless extension candidates. Maximal degree in co-relation 10619. Up to 2033 conditions per place. [2024-06-04 15:07:37,820 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 88 selfloop transitions, 16 changer transitions 0/111 dead transitions. [2024-06-04 15:07:37,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 111 transitions, 809 flow [2024-06-04 15:07:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:07:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:07:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-04 15:07:37,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-06-04 15:07:37,822 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 495 flow. Second operand 8 states and 165 transitions. [2024-06-04 15:07:37,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 111 transitions, 809 flow [2024-06-04 15:07:37,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 111 transitions, 777 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 15:07:37,833 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 502 flow [2024-06-04 15:07:37,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-06-04 15:07:37,834 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2024-06-04 15:07:37,834 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 502 flow [2024-06-04 15:07:37,834 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 15:07:37,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:37,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:37,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:07:37,835 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 15:07:37,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1761727544, now seen corresponding path program 3 times [2024-06-04 15:07:37,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:37,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978741040] [2024-06-04 15:07:37,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:37,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:38,740 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 15:07:38,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:38,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978741040] [2024-06-04 15:07:38,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978741040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:38,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:38,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:07:38,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24582549] [2024-06-04 15:07:38,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:38,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:07:38,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:38,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:07:38,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:07:38,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:38,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 502 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 15:07:38,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:38,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:38,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:39,492 INFO L124 PetriNetUnfolderBase]: 1550/2476 cut-off events. [2024-06-04 15:07:39,492 INFO L125 PetriNetUnfolderBase]: For 27830/27830 co-relation queries the response was YES. [2024-06-04 15:07:39,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11358 conditions, 2476 events. 1550/2476 cut-off events. For 27830/27830 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12931 event pairs, 489 based on Foata normal form. 20/2494 useless extension candidates. Maximal degree in co-relation 11323. Up to 2053 conditions per place. [2024-06-04 15:07:39,506 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 74 selfloop transitions, 30 changer transitions 0/111 dead transitions. [2024-06-04 15:07:39,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 111 transitions, 834 flow [2024-06-04 15:07:39,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:07:39,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:07:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-04 15:07:39,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49127906976744184 [2024-06-04 15:07:39,507 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 502 flow. Second operand 8 states and 169 transitions. [2024-06-04 15:07:39,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 111 transitions, 834 flow [2024-06-04 15:07:39,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 111 transitions, 797 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 15:07:39,572 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 554 flow [2024-06-04 15:07:39,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=554, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-06-04 15:07:39,573 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2024-06-04 15:07:39,573 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 554 flow [2024-06-04 15:07:39,588 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 15:07:39,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:39,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:39,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:07:39,589 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:39,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1761912242, now seen corresponding path program 1 times [2024-06-04 15:07:39,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:39,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181525053] [2024-06-04 15:07:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:39,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:40,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:40,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181525053] [2024-06-04 15:07:40,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181525053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:40,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:40,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:07:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775890307] [2024-06-04 15:07:40,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:40,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:07:40,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:40,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:07:40,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:07:40,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:40,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 554 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 15:07:40,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:40,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:40,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:41,350 INFO L124 PetriNetUnfolderBase]: 1567/2508 cut-off events. [2024-06-04 15:07:41,350 INFO L125 PetriNetUnfolderBase]: For 30154/30154 co-relation queries the response was YES. [2024-06-04 15:07:41,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11769 conditions, 2508 events. 1567/2508 cut-off events. For 30154/30154 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13209 event pairs, 504 based on Foata normal form. 4/2510 useless extension candidates. Maximal degree in co-relation 11733. Up to 2261 conditions per place. [2024-06-04 15:07:41,361 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 79 selfloop transitions, 24 changer transitions 0/110 dead transitions. [2024-06-04 15:07:41,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 110 transitions, 879 flow [2024-06-04 15:07:41,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:07:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:07:41,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-04 15:07:41,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-06-04 15:07:41,363 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 554 flow. Second operand 8 states and 162 transitions. [2024-06-04 15:07:41,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 110 transitions, 879 flow [2024-06-04 15:07:41,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 810 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:07:41,377 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 597 flow [2024-06-04 15:07:41,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2024-06-04 15:07:41,378 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2024-06-04 15:07:41,378 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 597 flow [2024-06-04 15:07:41,378 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 15:07:41,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:41,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:41,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:07:41,379 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:41,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:41,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1804123087, now seen corresponding path program 1 times [2024-06-04 15:07:41,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783503629] [2024-06-04 15:07:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:42,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:42,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783503629] [2024-06-04 15:07:42,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783503629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:42,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:42,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:07:42,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811100194] [2024-06-04 15:07:42,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:42,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:07:42,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:07:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:07:42,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:07:42,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 597 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:42,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:42,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:07:42,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:42,678 INFO L124 PetriNetUnfolderBase]: 1491/2423 cut-off events. [2024-06-04 15:07:42,679 INFO L125 PetriNetUnfolderBase]: For 32489/32489 co-relation queries the response was YES. [2024-06-04 15:07:42,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11827 conditions, 2423 events. 1491/2423 cut-off events. For 32489/32489 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12952 event pairs, 512 based on Foata normal form. 2/2415 useless extension candidates. Maximal degree in co-relation 11789. Up to 2181 conditions per place. [2024-06-04 15:07:42,693 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 73 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2024-06-04 15:07:42,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 100 transitions, 833 flow [2024-06-04 15:07:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:07:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:07:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-04 15:07:42,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-04 15:07:42,701 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 597 flow. Second operand 6 states and 123 transitions. [2024-06-04 15:07:42,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 100 transitions, 833 flow [2024-06-04 15:07:42,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 766 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-04 15:07:42,718 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 595 flow [2024-06-04 15:07:42,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=595, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2024-06-04 15:07:42,718 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-06-04 15:07:42,718 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 595 flow [2024-06-04 15:07:42,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:42,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:42,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:42,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:07:42,719 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 15:07:42,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash 186426424, now seen corresponding path program 4 times [2024-06-04 15:07:42,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:42,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937146725] [2024-06-04 15:07:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:42,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:43,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:43,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937146725] [2024-06-04 15:07:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937146725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:43,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:43,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:07:43,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088862765] [2024-06-04 15:07:43,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:43,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:07:43,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:43,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:07:43,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:07:43,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:43,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 595 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 15:07:43,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:43,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:43,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:44,393 INFO L124 PetriNetUnfolderBase]: 1632/2595 cut-off events. [2024-06-04 15:07:44,394 INFO L125 PetriNetUnfolderBase]: For 37772/37774 co-relation queries the response was YES. [2024-06-04 15:07:44,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 2595 events. 1632/2595 cut-off events. For 37772/37774 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13517 event pairs, 506 based on Foata normal form. 20/2613 useless extension candidates. Maximal degree in co-relation 12785. Up to 2171 conditions per place. [2024-06-04 15:07:44,407 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 81 selfloop transitions, 30 changer transitions 0/118 dead transitions. [2024-06-04 15:07:44,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 949 flow [2024-06-04 15:07:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:07:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:07:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-04 15:07:44,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-06-04 15:07:44,409 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 595 flow. Second operand 8 states and 165 transitions. [2024-06-04 15:07:44,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 949 flow [2024-06-04 15:07:44,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 118 transitions, 908 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-04 15:07:44,426 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 647 flow [2024-06-04 15:07:44,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=647, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2024-06-04 15:07:44,427 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 48 predicate places. [2024-06-04 15:07:44,427 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 647 flow [2024-06-04 15:07:44,427 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 15:07:44,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:44,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:44,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:07:44,428 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 15:07:44,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:44,428 INFO L85 PathProgramCache]: Analyzing trace with hash -780109070, now seen corresponding path program 2 times [2024-06-04 15:07:44,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:44,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934156327] [2024-06-04 15:07:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:44,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:45,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:45,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934156327] [2024-06-04 15:07:45,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934156327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:45,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:45,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:07:45,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83863200] [2024-06-04 15:07:45,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:45,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:07:45,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:45,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:07:45,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:07:45,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:45,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 647 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 15:07:45,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:45,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:45,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:46,093 INFO L124 PetriNetUnfolderBase]: 1660/2646 cut-off events. [2024-06-04 15:07:46,093 INFO L125 PetriNetUnfolderBase]: For 40056/40060 co-relation queries the response was YES. [2024-06-04 15:07:46,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 2646 events. 1660/2646 cut-off events. For 40056/40060 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13892 event pairs, 534 based on Foata normal form. 8/2653 useless extension candidates. Maximal degree in co-relation 13314. Up to 2391 conditions per place. [2024-06-04 15:07:46,108 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 83 selfloop transitions, 29 changer transitions 0/119 dead transitions. [2024-06-04 15:07:46,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 119 transitions, 1013 flow [2024-06-04 15:07:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:07:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:07:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 15:07:46,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-04 15:07:46,111 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 647 flow. Second operand 8 states and 158 transitions. [2024-06-04 15:07:46,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 119 transitions, 1013 flow [2024-06-04 15:07:46,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 119 transitions, 934 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:07:46,132 INFO L231 Difference]: Finished difference. Result has 95 places, 95 transitions, 729 flow [2024-06-04 15:07:46,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=729, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2024-06-04 15:07:46,133 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-06-04 15:07:46,133 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 729 flow [2024-06-04 15:07:46,133 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 15:07:46,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:46,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:46,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:07:46,134 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 15:07:46,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:46,134 INFO L85 PathProgramCache]: Analyzing trace with hash -771538190, now seen corresponding path program 3 times [2024-06-04 15:07:46,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:46,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494837411] [2024-06-04 15:07:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:46,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:47,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:47,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494837411] [2024-06-04 15:07:47,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494837411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:47,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:47,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:07:47,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958671844] [2024-06-04 15:07:47,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:47,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:07:47,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:07:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:07:47,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:47,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 729 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 15:07:47,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:47,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:47,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:47,876 INFO L124 PetriNetUnfolderBase]: 1677/2683 cut-off events. [2024-06-04 15:07:47,876 INFO L125 PetriNetUnfolderBase]: For 43712/43716 co-relation queries the response was YES. [2024-06-04 15:07:47,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13870 conditions, 2683 events. 1677/2683 cut-off events. For 43712/43716 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14180 event pairs, 470 based on Foata normal form. 8/2690 useless extension candidates. Maximal degree in co-relation 13828. Up to 2335 conditions per place. [2024-06-04 15:07:47,890 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 83 selfloop transitions, 36 changer transitions 0/126 dead transitions. [2024-06-04 15:07:47,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 126 transitions, 1177 flow [2024-06-04 15:07:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:07:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:07:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-04 15:07:47,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-04 15:07:47,894 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 729 flow. Second operand 8 states and 161 transitions. [2024-06-04 15:07:47,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 126 transitions, 1177 flow [2024-06-04 15:07:47,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 126 transitions, 1116 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-04 15:07:47,919 INFO L231 Difference]: Finished difference. Result has 100 places, 99 transitions, 823 flow [2024-06-04 15:07:47,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=823, PETRI_PLACES=100, PETRI_TRANSITIONS=99} [2024-06-04 15:07:47,925 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2024-06-04 15:07:47,925 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 99 transitions, 823 flow [2024-06-04 15:07:47,926 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 15:07:47,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:47,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:47,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:07:47,926 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 15:07:47,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1008010220, now seen corresponding path program 4 times [2024-06-04 15:07:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821918148] [2024-06-04 15:07:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:47,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:48,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821918148] [2024-06-04 15:07:48,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821918148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:48,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:48,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:07:48,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887172349] [2024-06-04 15:07:48,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:48,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:07:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:07:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:07:48,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:48,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 823 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 15:07:48,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:48,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:48,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:49,674 INFO L124 PetriNetUnfolderBase]: 1669/2671 cut-off events. [2024-06-04 15:07:49,674 INFO L125 PetriNetUnfolderBase]: For 46397/46401 co-relation queries the response was YES. [2024-06-04 15:07:49,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13771 conditions, 2671 events. 1669/2671 cut-off events. For 46397/46401 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14069 event pairs, 542 based on Foata normal form. 8/2678 useless extension candidates. Maximal degree in co-relation 13728. Up to 2406 conditions per place. [2024-06-04 15:07:49,689 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 88 selfloop transitions, 28 changer transitions 0/123 dead transitions. [2024-06-04 15:07:49,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 123 transitions, 1117 flow [2024-06-04 15:07:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:07:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:07:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-04 15:07:49,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622093023255814 [2024-06-04 15:07:49,691 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 823 flow. Second operand 8 states and 159 transitions. [2024-06-04 15:07:49,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 123 transitions, 1117 flow [2024-06-04 15:07:49,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 123 transitions, 1031 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-04 15:07:49,722 INFO L231 Difference]: Finished difference. Result has 104 places, 99 transitions, 800 flow [2024-06-04 15:07:49,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=800, PETRI_PLACES=104, PETRI_TRANSITIONS=99} [2024-06-04 15:07:49,722 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-06-04 15:07:49,723 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 99 transitions, 800 flow [2024-06-04 15:07:49,723 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 15:07:49,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:49,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:49,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:07:49,723 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:49,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash -878409457, now seen corresponding path program 2 times [2024-06-04 15:07:49,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:49,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779648562] [2024-06-04 15:07:49,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:49,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:50,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:50,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779648562] [2024-06-04 15:07:50,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779648562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:50,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:50,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:07:50,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014393889] [2024-06-04 15:07:50,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:50,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:07:50,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:50,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:07:50,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:07:50,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:07:50,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 99 transitions, 800 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:50,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:50,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:07:50,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:51,027 INFO L124 PetriNetUnfolderBase]: 1551/2529 cut-off events. [2024-06-04 15:07:51,027 INFO L125 PetriNetUnfolderBase]: For 49112/49112 co-relation queries the response was YES. [2024-06-04 15:07:51,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13233 conditions, 2529 events. 1551/2529 cut-off events. For 49112/49112 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13700 event pairs, 526 based on Foata normal form. 2/2518 useless extension candidates. Maximal degree in co-relation 13188. Up to 2266 conditions per place. [2024-06-04 15:07:51,043 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 75 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2024-06-04 15:07:51,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 111 transitions, 1040 flow [2024-06-04 15:07:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:07:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:07:51,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-04 15:07:51,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-04 15:07:51,044 INFO L175 Difference]: Start difference. First operand has 104 places, 99 transitions, 800 flow. Second operand 6 states and 119 transitions. [2024-06-04 15:07:51,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 111 transitions, 1040 flow [2024-06-04 15:07:51,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 111 transitions, 943 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:07:51,076 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 781 flow [2024-06-04 15:07:51,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=781, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2024-06-04 15:07:51,077 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 57 predicate places. [2024-06-04 15:07:51,077 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 781 flow [2024-06-04 15:07:51,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:51,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:51,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:51,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:07:51,078 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:51,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:51,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1798403215, now seen corresponding path program 1 times [2024-06-04 15:07:51,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:51,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7376200] [2024-06-04 15:07:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:51,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7376200] [2024-06-04 15:07:51,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7376200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:51,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:51,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:07:51,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769814065] [2024-06-04 15:07:51,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:51,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:07:51,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:51,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:07:51,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:07:51,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:07:51,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 781 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:51,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:51,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:07:51,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:52,312 INFO L124 PetriNetUnfolderBase]: 1503/2482 cut-off events. [2024-06-04 15:07:52,312 INFO L125 PetriNetUnfolderBase]: For 45553/45553 co-relation queries the response was YES. [2024-06-04 15:07:52,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12868 conditions, 2482 events. 1503/2482 cut-off events. For 45553/45553 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13456 event pairs, 464 based on Foata normal form. 2/2483 useless extension candidates. Maximal degree in co-relation 12824. Up to 2248 conditions per place. [2024-06-04 15:07:52,325 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 97 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2024-06-04 15:07:52,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 117 transitions, 1061 flow [2024-06-04 15:07:52,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:07:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:07:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-04 15:07:52,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-06-04 15:07:52,326 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 781 flow. Second operand 6 states and 121 transitions. [2024-06-04 15:07:52,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 117 transitions, 1061 flow [2024-06-04 15:07:52,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 117 transitions, 1005 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 15:07:52,353 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 791 flow [2024-06-04 15:07:52,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=791, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2024-06-04 15:07:52,353 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2024-06-04 15:07:52,353 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 791 flow [2024-06-04 15:07:52,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:52,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:52,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:52,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:07:52,354 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:52,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:52,354 INFO L85 PathProgramCache]: Analyzing trace with hash -878403505, now seen corresponding path program 2 times [2024-06-04 15:07:52,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672249940] [2024-06-04 15:07:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:52,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:53,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:53,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672249940] [2024-06-04 15:07:53,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672249940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:53,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:53,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:07:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697362203] [2024-06-04 15:07:53,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:53,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:07:53,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:53,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:07:53,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:07:53,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:07:53,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 791 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:53,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:53,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:07:53,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:53,451 INFO L124 PetriNetUnfolderBase]: 1505/2488 cut-off events. [2024-06-04 15:07:53,451 INFO L125 PetriNetUnfolderBase]: For 49184/49186 co-relation queries the response was YES. [2024-06-04 15:07:53,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13250 conditions, 2488 events. 1505/2488 cut-off events. For 49184/49186 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13490 event pairs, 468 based on Foata normal form. 4/2491 useless extension candidates. Maximal degree in co-relation 13205. Up to 2242 conditions per place. [2024-06-04 15:07:53,465 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 93 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2024-06-04 15:07:53,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 118 transitions, 1075 flow [2024-06-04 15:07:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:07:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:07:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-04 15:07:53,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-06-04 15:07:53,466 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 791 flow. Second operand 6 states and 121 transitions. [2024-06-04 15:07:53,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 118 transitions, 1075 flow [2024-06-04 15:07:53,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 118 transitions, 1031 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 15:07:53,495 INFO L231 Difference]: Finished difference. Result has 105 places, 108 transitions, 829 flow [2024-06-04 15:07:53,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=829, PETRI_PLACES=105, PETRI_TRANSITIONS=108} [2024-06-04 15:07:53,496 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 61 predicate places. [2024-06-04 15:07:53,496 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 108 transitions, 829 flow [2024-06-04 15:07:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:53,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:53,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:07:53,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:07:53,497 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:53,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash -878395569, now seen corresponding path program 1 times [2024-06-04 15:07:53,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:53,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667891798] [2024-06-04 15:07:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:53,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:54,333 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 15:07:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667891798] [2024-06-04 15:07:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667891798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:54,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:07:54,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919378107] [2024-06-04 15:07:54,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:54,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:07:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:54,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:07:54,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:07:54,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:07:54,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 108 transitions, 829 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:54,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:54,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:07:54,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:54,792 INFO L124 PetriNetUnfolderBase]: 1488/2479 cut-off events. [2024-06-04 15:07:54,793 INFO L125 PetriNetUnfolderBase]: For 53137/53137 co-relation queries the response was YES. [2024-06-04 15:07:54,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13537 conditions, 2479 events. 1488/2479 cut-off events. For 53137/53137 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13705 event pairs, 498 based on Foata normal form. 1/2470 useless extension candidates. Maximal degree in co-relation 13491. Up to 2224 conditions per place. [2024-06-04 15:07:54,807 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 88 selfloop transitions, 15 changer transitions 0/120 dead transitions. [2024-06-04 15:07:54,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 120 transitions, 1091 flow [2024-06-04 15:07:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:07:54,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:07:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 15:07:54,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-04 15:07:54,808 INFO L175 Difference]: Start difference. First operand has 105 places, 108 transitions, 829 flow. Second operand 7 states and 133 transitions. [2024-06-04 15:07:54,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 120 transitions, 1091 flow [2024-06-04 15:07:54,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 120 transitions, 1031 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-04 15:07:54,833 INFO L231 Difference]: Finished difference. Result has 108 places, 111 transitions, 845 flow [2024-06-04 15:07:54,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=845, PETRI_PLACES=108, PETRI_TRANSITIONS=111} [2024-06-04 15:07:54,834 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2024-06-04 15:07:54,834 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 111 transitions, 845 flow [2024-06-04 15:07:54,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:54,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:54,835 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 15:07:54,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:07:54,835 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 15:07:54,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 742020906, now seen corresponding path program 1 times [2024-06-04 15:07:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:54,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313416739] [2024-06-04 15:07:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:54,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:56,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:56,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313416739] [2024-06-04 15:07:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313416739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:56,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:07:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939292482] [2024-06-04 15:07:56,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:56,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:07:56,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:07:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:07:56,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:56,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 111 transitions, 845 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 15:07:56,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:56,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:56,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:56,856 INFO L124 PetriNetUnfolderBase]: 1792/2907 cut-off events. [2024-06-04 15:07:56,857 INFO L125 PetriNetUnfolderBase]: For 70154/70154 co-relation queries the response was YES. [2024-06-04 15:07:56,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16397 conditions, 2907 events. 1792/2907 cut-off events. For 70154/70154 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15898 event pairs, 527 based on Foata normal form. 12/2917 useless extension candidates. Maximal degree in co-relation 16350. Up to 2283 conditions per place. [2024-06-04 15:07:56,876 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 106 selfloop transitions, 43 changer transitions 0/156 dead transitions. [2024-06-04 15:07:56,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 156 transitions, 1357 flow [2024-06-04 15:07:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:07:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:07:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-04 15:07:56,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48320413436692505 [2024-06-04 15:07:56,884 INFO L175 Difference]: Start difference. First operand has 108 places, 111 transitions, 845 flow. Second operand 9 states and 187 transitions. [2024-06-04 15:07:56,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 156 transitions, 1357 flow [2024-06-04 15:07:56,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 156 transitions, 1303 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-04 15:07:56,924 INFO L231 Difference]: Finished difference. Result has 114 places, 119 transitions, 997 flow [2024-06-04 15:07:56,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=997, PETRI_PLACES=114, PETRI_TRANSITIONS=119} [2024-06-04 15:07:56,925 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2024-06-04 15:07:56,925 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 119 transitions, 997 flow [2024-06-04 15:07:56,925 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 15:07:56,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:56,926 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 15:07:56,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:07:56,926 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:07:56,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash -891033951, now seen corresponding path program 1 times [2024-06-04 15:07:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:56,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106065403] [2024-06-04 15:07:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:57,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:57,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106065403] [2024-06-04 15:07:57,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106065403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:57,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:57,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:07:57,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199977546] [2024-06-04 15:07:57,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:57,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:07:57,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:57,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:07:57,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:07:57,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:57,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 119 transitions, 997 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:57,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:57,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:57,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:07:58,264 INFO L124 PetriNetUnfolderBase]: 1756/2867 cut-off events. [2024-06-04 15:07:58,264 INFO L125 PetriNetUnfolderBase]: For 73919/73919 co-relation queries the response was YES. [2024-06-04 15:07:58,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16824 conditions, 2867 events. 1756/2867 cut-off events. For 73919/73919 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 15832 event pairs, 555 based on Foata normal form. 2/2852 useless extension candidates. Maximal degree in co-relation 16774. Up to 2635 conditions per place. [2024-06-04 15:07:58,279 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 104 selfloop transitions, 17 changer transitions 0/137 dead transitions. [2024-06-04 15:07:58,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 137 transitions, 1313 flow [2024-06-04 15:07:58,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:07:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:07:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 15:07:58,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-04 15:07:58,280 INFO L175 Difference]: Start difference. First operand has 114 places, 119 transitions, 997 flow. Second operand 7 states and 133 transitions. [2024-06-04 15:07:58,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 137 transitions, 1313 flow [2024-06-04 15:07:58,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 137 transitions, 1235 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-04 15:07:58,322 INFO L231 Difference]: Finished difference. Result has 117 places, 122 transitions, 999 flow [2024-06-04 15:07:58,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=999, PETRI_PLACES=117, PETRI_TRANSITIONS=122} [2024-06-04 15:07:58,322 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 73 predicate places. [2024-06-04 15:07:58,323 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 122 transitions, 999 flow [2024-06-04 15:07:58,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:07:58,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:07:58,323 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 15:07:58,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:07:58,323 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 15:07:58,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:07:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1842924644, now seen corresponding path program 2 times [2024-06-04 15:07:58,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:07:58,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250028672] [2024-06-04 15:07:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:07:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:07:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:07:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:07:59,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:07:59,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250028672] [2024-06-04 15:07:59,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250028672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:07:59,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:07:59,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:07:59,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717710384] [2024-06-04 15:07:59,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:07:59,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:07:59,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:07:59,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:07:59,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:07:59,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:07:59,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 122 transitions, 999 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 15:07:59,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:07:59,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:07:59,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:00,284 INFO L124 PetriNetUnfolderBase]: 1920/3131 cut-off events. [2024-06-04 15:08:00,285 INFO L125 PetriNetUnfolderBase]: For 81928/81928 co-relation queries the response was YES. [2024-06-04 15:08:00,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18303 conditions, 3131 events. 1920/3131 cut-off events. For 81928/81928 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17462 event pairs, 521 based on Foata normal form. 12/3142 useless extension candidates. Maximal degree in co-relation 18252. Up to 2576 conditions per place. [2024-06-04 15:08:00,304 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 107 selfloop transitions, 51 changer transitions 0/166 dead transitions. [2024-06-04 15:08:00,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 166 transitions, 1533 flow [2024-06-04 15:08:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:08:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:08:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-04 15:08:00,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-04 15:08:00,306 INFO L175 Difference]: Start difference. First operand has 117 places, 122 transitions, 999 flow. Second operand 10 states and 198 transitions. [2024-06-04 15:08:00,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 166 transitions, 1533 flow [2024-06-04 15:08:00,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 166 transitions, 1473 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-04 15:08:00,361 INFO L231 Difference]: Finished difference. Result has 125 places, 132 transitions, 1178 flow [2024-06-04 15:08:00,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1178, PETRI_PLACES=125, PETRI_TRANSITIONS=132} [2024-06-04 15:08:00,361 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 81 predicate places. [2024-06-04 15:08:00,362 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 132 transitions, 1178 flow [2024-06-04 15:08:00,362 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 15:08:00,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:00,362 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 15:08:00,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:08:00,362 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 15:08:00,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1783215484, now seen corresponding path program 3 times [2024-06-04 15:08:00,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:00,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576539891] [2024-06-04 15:08:00,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:00,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:01,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576539891] [2024-06-04 15:08:01,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576539891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:01,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:01,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:08:01,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205474674] [2024-06-04 15:08:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:01,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:08:01,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:08:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:08:01,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:01,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 132 transitions, 1178 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 15:08:01,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:01,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:01,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:02,152 INFO L124 PetriNetUnfolderBase]: 2002/3292 cut-off events. [2024-06-04 15:08:02,152 INFO L125 PetriNetUnfolderBase]: For 90549/90551 co-relation queries the response was YES. [2024-06-04 15:08:02,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19603 conditions, 3292 events. 2002/3292 cut-off events. For 90549/90551 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18913 event pairs, 409 based on Foata normal form. 12/3302 useless extension candidates. Maximal degree in co-relation 19548. Up to 2132 conditions per place. [2024-06-04 15:08:02,175 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 102 selfloop transitions, 59 changer transitions 0/169 dead transitions. [2024-06-04 15:08:02,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 169 transitions, 1726 flow [2024-06-04 15:08:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:08:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:08:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-04 15:08:02,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-04 15:08:02,176 INFO L175 Difference]: Start difference. First operand has 125 places, 132 transitions, 1178 flow. Second operand 9 states and 185 transitions. [2024-06-04 15:08:02,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 169 transitions, 1726 flow [2024-06-04 15:08:02,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 169 transitions, 1659 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-04 15:08:02,228 INFO L231 Difference]: Finished difference. Result has 133 places, 134 transitions, 1311 flow [2024-06-04 15:08:02,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=133, PETRI_TRANSITIONS=134} [2024-06-04 15:08:02,229 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 89 predicate places. [2024-06-04 15:08:02,229 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 134 transitions, 1311 flow [2024-06-04 15:08:02,229 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 15:08:02,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:02,229 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 15:08:02,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:08:02,229 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 15:08:02,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:02,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1183544220, now seen corresponding path program 4 times [2024-06-04 15:08:02,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:02,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142694734] [2024-06-04 15:08:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:02,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:03,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:03,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142694734] [2024-06-04 15:08:03,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142694734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:03,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:03,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:08:03,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902053177] [2024-06-04 15:08:03,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:03,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:08:03,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:03,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:08:03,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:08:03,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:03,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 134 transitions, 1311 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 15:08:03,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:03,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:03,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:04,092 INFO L124 PetriNetUnfolderBase]: 1982/3260 cut-off events. [2024-06-04 15:08:04,092 INFO L125 PetriNetUnfolderBase]: For 91631/91633 co-relation queries the response was YES. [2024-06-04 15:08:04,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19218 conditions, 3260 events. 1982/3260 cut-off events. For 91631/91633 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18671 event pairs, 537 based on Foata normal form. 12/3270 useless extension candidates. Maximal degree in co-relation 19160. Up to 2686 conditions per place. [2024-06-04 15:08:04,110 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 111 selfloop transitions, 47 changer transitions 0/166 dead transitions. [2024-06-04 15:08:04,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 166 transitions, 1699 flow [2024-06-04 15:08:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:08:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:08:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-04 15:08:04,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754521963824289 [2024-06-04 15:08:04,112 INFO L175 Difference]: Start difference. First operand has 133 places, 134 transitions, 1311 flow. Second operand 9 states and 184 transitions. [2024-06-04 15:08:04,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 166 transitions, 1699 flow [2024-06-04 15:08:04,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 166 transitions, 1575 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:04,162 INFO L231 Difference]: Finished difference. Result has 135 places, 133 transitions, 1241 flow [2024-06-04 15:08:04,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1241, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2024-06-04 15:08:04,163 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2024-06-04 15:08:04,163 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 1241 flow [2024-06-04 15:08:04,163 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 15:08:04,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:04,163 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 15:08:04,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:08:04,164 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 15:08:04,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1460472021, now seen corresponding path program 2 times [2024-06-04 15:08:04,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:04,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029304302] [2024-06-04 15:08:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:05,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029304302] [2024-06-04 15:08:05,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029304302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:05,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:05,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293461404] [2024-06-04 15:08:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:05,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:05,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:05,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 133 transitions, 1241 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:05,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:05,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:05,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:05,667 INFO L124 PetriNetUnfolderBase]: 1906/3148 cut-off events. [2024-06-04 15:08:05,667 INFO L125 PetriNetUnfolderBase]: For 91129/91135 co-relation queries the response was YES. [2024-06-04 15:08:05,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18646 conditions, 3148 events. 1906/3148 cut-off events. For 91129/91135 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18134 event pairs, 550 based on Foata normal form. 6/3128 useless extension candidates. Maximal degree in co-relation 18587. Up to 2883 conditions per place. [2024-06-04 15:08:05,693 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 103 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2024-06-04 15:08:05,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 149 transitions, 1671 flow [2024-06-04 15:08:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-04 15:08:05,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318936877076412 [2024-06-04 15:08:05,694 INFO L175 Difference]: Start difference. First operand has 135 places, 133 transitions, 1241 flow. Second operand 7 states and 130 transitions. [2024-06-04 15:08:05,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 149 transitions, 1671 flow [2024-06-04 15:08:05,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 149 transitions, 1506 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 15:08:05,758 INFO L231 Difference]: Finished difference. Result has 133 places, 139 transitions, 1228 flow [2024-06-04 15:08:05,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1228, PETRI_PLACES=133, PETRI_TRANSITIONS=139} [2024-06-04 15:08:05,759 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 89 predicate places. [2024-06-04 15:08:05,759 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 139 transitions, 1228 flow [2024-06-04 15:08:05,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:05,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:05,759 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 15:08:05,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:08:05,759 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:05,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash 261023851, now seen corresponding path program 3 times [2024-06-04 15:08:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:05,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614686287] [2024-06-04 15:08:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:06,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:06,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614686287] [2024-06-04 15:08:06,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614686287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:06,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:06,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267231342] [2024-06-04 15:08:06,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:06,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:06,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:06,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:06,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:06,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 1228 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:06,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:06,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:06,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:07,091 INFO L124 PetriNetUnfolderBase]: 1902/3141 cut-off events. [2024-06-04 15:08:07,091 INFO L125 PetriNetUnfolderBase]: For 94464/94470 co-relation queries the response was YES. [2024-06-04 15:08:07,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18606 conditions, 3141 events. 1902/3141 cut-off events. For 94464/94470 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18090 event pairs, 549 based on Foata normal form. 5/3121 useless extension candidates. Maximal degree in co-relation 18549. Up to 2880 conditions per place. [2024-06-04 15:08:07,109 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 103 selfloop transitions, 29 changer transitions 0/148 dead transitions. [2024-06-04 15:08:07,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 1514 flow [2024-06-04 15:08:07,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-04 15:08:07,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318936877076412 [2024-06-04 15:08:07,110 INFO L175 Difference]: Start difference. First operand has 133 places, 139 transitions, 1228 flow. Second operand 7 states and 130 transitions. [2024-06-04 15:08:07,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 1514 flow [2024-06-04 15:08:07,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 148 transitions, 1434 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-04 15:08:07,172 INFO L231 Difference]: Finished difference. Result has 137 places, 139 transitions, 1212 flow [2024-06-04 15:08:07,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1212, PETRI_PLACES=137, PETRI_TRANSITIONS=139} [2024-06-04 15:08:07,172 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 93 predicate places. [2024-06-04 15:08:07,172 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 139 transitions, 1212 flow [2024-06-04 15:08:07,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:07,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:07,173 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 15:08:07,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:08:07,173 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:07,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 83956687, now seen corresponding path program 1 times [2024-06-04 15:08:07,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:07,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48952599] [2024-06-04 15:08:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:07,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:08,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:08,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48952599] [2024-06-04 15:08:08,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48952599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:08,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:08,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:08,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257377134] [2024-06-04 15:08:08,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:08,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:08,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:08,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:08,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:08:08,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 139 transitions, 1212 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:08,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:08,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:08:08,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:08,571 INFO L124 PetriNetUnfolderBase]: 1816/3072 cut-off events. [2024-06-04 15:08:08,571 INFO L125 PetriNetUnfolderBase]: For 85078/85078 co-relation queries the response was YES. [2024-06-04 15:08:08,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17612 conditions, 3072 events. 1816/3072 cut-off events. For 85078/85078 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17984 event pairs, 480 based on Foata normal form. 1/3072 useless extension candidates. Maximal degree in co-relation 17553. Up to 2769 conditions per place. [2024-06-04 15:08:08,589 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 131 selfloop transitions, 15 changer transitions 0/157 dead transitions. [2024-06-04 15:08:08,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 157 transitions, 1586 flow [2024-06-04 15:08:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:08,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 15:08:08,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-04 15:08:08,590 INFO L175 Difference]: Start difference. First operand has 137 places, 139 transitions, 1212 flow. Second operand 7 states and 138 transitions. [2024-06-04 15:08:08,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 157 transitions, 1586 flow [2024-06-04 15:08:08,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 157 transitions, 1510 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:08,655 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 1222 flow [2024-06-04 15:08:08,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1222, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2024-06-04 15:08:08,656 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 94 predicate places. [2024-06-04 15:08:08,656 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 1222 flow [2024-06-04 15:08:08,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:08,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:08,656 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 15:08:08,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:08:08,657 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:08,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1467132309, now seen corresponding path program 1 times [2024-06-04 15:08:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:08,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351803557] [2024-06-04 15:08:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:08,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:09,474 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 15:08:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351803557] [2024-06-04 15:08:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351803557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:09,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:09,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:09,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324542628] [2024-06-04 15:08:09,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:09,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:09,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:09,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:09,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:09,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 1222 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:09,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:09,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:09,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:10,028 INFO L124 PetriNetUnfolderBase]: 1903/3163 cut-off events. [2024-06-04 15:08:10,028 INFO L125 PetriNetUnfolderBase]: For 90531/90531 co-relation queries the response was YES. [2024-06-04 15:08:10,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18438 conditions, 3163 events. 1903/3163 cut-off events. For 90531/90531 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18221 event pairs, 503 based on Foata normal form. 2/3164 useless extension candidates. Maximal degree in co-relation 18378. Up to 2936 conditions per place. [2024-06-04 15:08:10,051 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 138 selfloop transitions, 15 changer transitions 0/159 dead transitions. [2024-06-04 15:08:10,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 159 transitions, 1610 flow [2024-06-04 15:08:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-04 15:08:10,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2024-06-04 15:08:10,052 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 1222 flow. Second operand 7 states and 131 transitions. [2024-06-04 15:08:10,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 159 transitions, 1610 flow [2024-06-04 15:08:10,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 159 transitions, 1546 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 15:08:10,113 INFO L231 Difference]: Finished difference. Result has 140 places, 145 transitions, 1244 flow [2024-06-04 15:08:10,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1244, PETRI_PLACES=140, PETRI_TRANSITIONS=145} [2024-06-04 15:08:10,114 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 96 predicate places. [2024-06-04 15:08:10,114 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 145 transitions, 1244 flow [2024-06-04 15:08:10,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:10,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:10,114 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 15:08:10,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:08:10,115 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:10,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash 261445513, now seen corresponding path program 2 times [2024-06-04 15:08:10,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:10,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553686542] [2024-06-04 15:08:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:10,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:10,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553686542] [2024-06-04 15:08:10,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553686542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:10,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:10,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:10,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746284214] [2024-06-04 15:08:10,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:10,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:10,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:11,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:11,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 145 transitions, 1244 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:11,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:11,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:11,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:11,422 INFO L124 PetriNetUnfolderBase]: 1921/3191 cut-off events. [2024-06-04 15:08:11,422 INFO L125 PetriNetUnfolderBase]: For 96496/96498 co-relation queries the response was YES. [2024-06-04 15:08:11,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19091 conditions, 3191 events. 1921/3191 cut-off events. For 96496/96498 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18406 event pairs, 507 based on Foata normal form. 4/3194 useless extension candidates. Maximal degree in co-relation 19030. Up to 2932 conditions per place. [2024-06-04 15:08:11,445 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 130 selfloop transitions, 28 changer transitions 0/164 dead transitions. [2024-06-04 15:08:11,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 164 transitions, 1764 flow [2024-06-04 15:08:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 15:08:11,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-04 15:08:11,447 INFO L175 Difference]: Start difference. First operand has 140 places, 145 transitions, 1244 flow. Second operand 7 states and 133 transitions. [2024-06-04 15:08:11,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 164 transitions, 1764 flow [2024-06-04 15:08:11,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 164 transitions, 1700 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-04 15:08:11,519 INFO L231 Difference]: Finished difference. Result has 142 places, 151 transitions, 1348 flow [2024-06-04 15:08:11,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1348, PETRI_PLACES=142, PETRI_TRANSITIONS=151} [2024-06-04 15:08:11,519 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 98 predicate places. [2024-06-04 15:08:11,520 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 151 transitions, 1348 flow [2024-06-04 15:08:11,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:11,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:11,520 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 15:08:11,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:08:11,520 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:11,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:11,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1460703219, now seen corresponding path program 3 times [2024-06-04 15:08:11,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:11,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624769224] [2024-06-04 15:08:11,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:11,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:12,333 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 15:08:12,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624769224] [2024-06-04 15:08:12,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624769224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:12,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:12,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:12,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033434946] [2024-06-04 15:08:12,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:12,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:12,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:12,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:12,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:12,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:12,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 151 transitions, 1348 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:12,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:12,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:12,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:12,795 INFO L124 PetriNetUnfolderBase]: 1915/3183 cut-off events. [2024-06-04 15:08:12,795 INFO L125 PetriNetUnfolderBase]: For 101851/101853 co-relation queries the response was YES. [2024-06-04 15:08:12,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19400 conditions, 3183 events. 1915/3183 cut-off events. For 101851/101853 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18357 event pairs, 509 based on Foata normal form. 4/3186 useless extension candidates. Maximal degree in co-relation 19338. Up to 2927 conditions per place. [2024-06-04 15:08:12,817 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 130 selfloop transitions, 27 changer transitions 0/163 dead transitions. [2024-06-04 15:08:12,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 163 transitions, 1696 flow [2024-06-04 15:08:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-04 15:08:12,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-04 15:08:12,818 INFO L175 Difference]: Start difference. First operand has 142 places, 151 transitions, 1348 flow. Second operand 7 states and 133 transitions. [2024-06-04 15:08:12,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 163 transitions, 1696 flow [2024-06-04 15:08:12,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 163 transitions, 1601 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-04 15:08:12,887 INFO L231 Difference]: Finished difference. Result has 146 places, 151 transitions, 1313 flow [2024-06-04 15:08:12,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1313, PETRI_PLACES=146, PETRI_TRANSITIONS=151} [2024-06-04 15:08:12,888 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 102 predicate places. [2024-06-04 15:08:12,888 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 151 transitions, 1313 flow [2024-06-04 15:08:12,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:12,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:12,888 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 15:08:12,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:08:12,889 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:12,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:12,889 INFO L85 PathProgramCache]: Analyzing trace with hash -845743800, now seen corresponding path program 1 times [2024-06-04 15:08:12,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:12,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050564468] [2024-06-04 15:08:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:12,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:13,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050564468] [2024-06-04 15:08:13,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050564468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:13,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:13,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504886641] [2024-06-04 15:08:13,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:13,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:13,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:13,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:13,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:13,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 151 transitions, 1313 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:13,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:13,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:13,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:14,206 INFO L124 PetriNetUnfolderBase]: 2023/3321 cut-off events. [2024-06-04 15:08:14,206 INFO L125 PetriNetUnfolderBase]: For 126774/126776 co-relation queries the response was YES. [2024-06-04 15:08:14,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21178 conditions, 3321 events. 2023/3321 cut-off events. For 126774/126776 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19121 event pairs, 550 based on Foata normal form. 4/3324 useless extension candidates. Maximal degree in co-relation 21114. Up to 3029 conditions per place. [2024-06-04 15:08:14,231 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 140 selfloop transitions, 20 changer transitions 0/173 dead transitions. [2024-06-04 15:08:14,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 173 transitions, 1732 flow [2024-06-04 15:08:14,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-04 15:08:14,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-04 15:08:14,237 INFO L175 Difference]: Start difference. First operand has 146 places, 151 transitions, 1313 flow. Second operand 7 states and 138 transitions. [2024-06-04 15:08:14,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 173 transitions, 1732 flow [2024-06-04 15:08:14,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 173 transitions, 1658 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:14,340 INFO L231 Difference]: Finished difference. Result has 147 places, 154 transitions, 1335 flow [2024-06-04 15:08:14,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1335, PETRI_PLACES=147, PETRI_TRANSITIONS=154} [2024-06-04 15:08:14,341 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 103 predicate places. [2024-06-04 15:08:14,341 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 154 transitions, 1335 flow [2024-06-04 15:08:14,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:14,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:14,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:14,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:08:14,342 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:14,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:14,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1404546192, now seen corresponding path program 2 times [2024-06-04 15:08:14,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:14,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227769744] [2024-06-04 15:08:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:14,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:15,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:15,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227769744] [2024-06-04 15:08:15,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227769744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:15,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:15,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:15,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047775487] [2024-06-04 15:08:15,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:15,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:15,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:15,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:15,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 1335 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:15,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:15,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:15,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:15,806 INFO L124 PetriNetUnfolderBase]: 2087/3421 cut-off events. [2024-06-04 15:08:15,806 INFO L125 PetriNetUnfolderBase]: For 136546/136548 co-relation queries the response was YES. [2024-06-04 15:08:15,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22345 conditions, 3421 events. 2087/3421 cut-off events. For 136546/136548 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19704 event pairs, 556 based on Foata normal form. 4/3424 useless extension candidates. Maximal degree in co-relation 22280. Up to 3088 conditions per place. [2024-06-04 15:08:15,833 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 142 selfloop transitions, 34 changer transitions 0/189 dead transitions. [2024-06-04 15:08:15,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 189 transitions, 2058 flow [2024-06-04 15:08:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 15:08:15,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-04 15:08:15,835 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 1335 flow. Second operand 8 states and 150 transitions. [2024-06-04 15:08:15,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 189 transitions, 2058 flow [2024-06-04 15:08:15,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 189 transitions, 1943 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-04 15:08:15,921 INFO L231 Difference]: Finished difference. Result has 153 places, 172 transitions, 1566 flow [2024-06-04 15:08:15,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1566, PETRI_PLACES=153, PETRI_TRANSITIONS=172} [2024-06-04 15:08:15,921 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 109 predicate places. [2024-06-04 15:08:15,921 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 172 transitions, 1566 flow [2024-06-04 15:08:15,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:15,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:15,922 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 15:08:15,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:08:15,922 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:15,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash -840021944, now seen corresponding path program 1 times [2024-06-04 15:08:15,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:15,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647497529] [2024-06-04 15:08:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:15,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:16,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:16,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647497529] [2024-06-04 15:08:16,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647497529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:16,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:16,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:16,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896884185] [2024-06-04 15:08:16,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:16,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:16,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:16,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 172 transitions, 1566 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:16,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:16,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:16,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:17,456 INFO L124 PetriNetUnfolderBase]: 2006/3309 cut-off events. [2024-06-04 15:08:17,457 INFO L125 PetriNetUnfolderBase]: For 141067/141079 co-relation queries the response was YES. [2024-06-04 15:08:17,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22182 conditions, 3309 events. 2006/3309 cut-off events. For 141067/141079 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19045 event pairs, 544 based on Foata normal form. 2/3288 useless extension candidates. Maximal degree in co-relation 22114. Up to 2985 conditions per place. [2024-06-04 15:08:17,483 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 143 selfloop transitions, 24 changer transitions 0/190 dead transitions. [2024-06-04 15:08:17,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 190 transitions, 1978 flow [2024-06-04 15:08:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 15:08:17,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273255813953488 [2024-06-04 15:08:17,486 INFO L175 Difference]: Start difference. First operand has 153 places, 172 transitions, 1566 flow. Second operand 8 states and 147 transitions. [2024-06-04 15:08:17,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 190 transitions, 1978 flow [2024-06-04 15:08:17,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 190 transitions, 1920 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-04 15:08:17,578 INFO L231 Difference]: Finished difference. Result has 160 places, 175 transitions, 1608 flow [2024-06-04 15:08:17,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1608, PETRI_PLACES=160, PETRI_TRANSITIONS=175} [2024-06-04 15:08:17,579 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 116 predicate places. [2024-06-04 15:08:17,579 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 175 transitions, 1608 flow [2024-06-04 15:08:17,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:17,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:17,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:17,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:08:17,580 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:17,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash 481175928, now seen corresponding path program 3 times [2024-06-04 15:08:17,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:17,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879688526] [2024-06-04 15:08:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:17,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:18,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:18,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:18,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879688526] [2024-06-04 15:08:18,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879688526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:18,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:18,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:18,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379037931] [2024-06-04 15:08:18,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:18,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:18,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:18,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:18,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:18,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:18,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 175 transitions, 1608 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:18,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:18,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:18,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:18,911 INFO L124 PetriNetUnfolderBase]: 2094/3431 cut-off events. [2024-06-04 15:08:18,911 INFO L125 PetriNetUnfolderBase]: For 149815/149823 co-relation queries the response was YES. [2024-06-04 15:08:18,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23364 conditions, 3431 events. 2094/3431 cut-off events. For 149815/149823 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 19652 event pairs, 551 based on Foata normal form. 4/3429 useless extension candidates. Maximal degree in co-relation 23293. Up to 3115 conditions per place. [2024-06-04 15:08:18,937 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 154 selfloop transitions, 25 changer transitions 0/192 dead transitions. [2024-06-04 15:08:18,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 192 transitions, 2019 flow [2024-06-04 15:08:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-04 15:08:18,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-04 15:08:18,938 INFO L175 Difference]: Start difference. First operand has 160 places, 175 transitions, 1608 flow. Second operand 7 states and 135 transitions. [2024-06-04 15:08:18,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 192 transitions, 2019 flow [2024-06-04 15:08:19,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 192 transitions, 1911 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:19,050 INFO L231 Difference]: Finished difference. Result has 161 places, 176 transitions, 1569 flow [2024-06-04 15:08:19,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1569, PETRI_PLACES=161, PETRI_TRANSITIONS=176} [2024-06-04 15:08:19,051 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 117 predicate places. [2024-06-04 15:08:19,051 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 176 transitions, 1569 flow [2024-06-04 15:08:19,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:19,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:19,051 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 15:08:19,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:08:19,051 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:19,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash -816664986, now seen corresponding path program 4 times [2024-06-04 15:08:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:19,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386522675] [2024-06-04 15:08:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:19,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:19,917 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 15:08:19,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:19,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386522675] [2024-06-04 15:08:19,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386522675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:19,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:19,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:19,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482738082] [2024-06-04 15:08:19,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:19,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:19,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:19,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:19,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:19,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:19,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 176 transitions, 1569 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:19,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:19,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:19,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:20,555 INFO L124 PetriNetUnfolderBase]: 2109/3452 cut-off events. [2024-06-04 15:08:20,556 INFO L125 PetriNetUnfolderBase]: For 157097/157105 co-relation queries the response was YES. [2024-06-04 15:08:20,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23667 conditions, 3452 events. 2109/3452 cut-off events. For 157097/157105 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19780 event pairs, 549 based on Foata normal form. 4/3445 useless extension candidates. Maximal degree in co-relation 23595. Up to 3110 conditions per place. [2024-06-04 15:08:20,581 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 144 selfloop transitions, 36 changer transitions 0/193 dead transitions. [2024-06-04 15:08:20,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 193 transitions, 2023 flow [2024-06-04 15:08:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-04 15:08:20,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44518272425249167 [2024-06-04 15:08:20,583 INFO L175 Difference]: Start difference. First operand has 161 places, 176 transitions, 1569 flow. Second operand 7 states and 134 transitions. [2024-06-04 15:08:20,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 193 transitions, 2023 flow [2024-06-04 15:08:20,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 193 transitions, 1940 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:08:20,689 INFO L231 Difference]: Finished difference. Result has 161 places, 179 transitions, 1626 flow [2024-06-04 15:08:20,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1626, PETRI_PLACES=161, PETRI_TRANSITIONS=179} [2024-06-04 15:08:20,690 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 117 predicate places. [2024-06-04 15:08:20,690 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 179 transitions, 1626 flow [2024-06-04 15:08:20,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:20,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:20,690 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 15:08:20,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:08:20,690 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:20,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:20,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1957114350, now seen corresponding path program 5 times [2024-06-04 15:08:20,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:20,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870535700] [2024-06-04 15:08:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:21,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:21,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870535700] [2024-06-04 15:08:21,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870535700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:21,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:21,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:21,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239817467] [2024-06-04 15:08:21,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:21,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:21,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 179 transitions, 1626 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:21,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:21,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:21,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:22,064 INFO L124 PetriNetUnfolderBase]: 2141/3507 cut-off events. [2024-06-04 15:08:22,064 INFO L125 PetriNetUnfolderBase]: For 169502/169514 co-relation queries the response was YES. [2024-06-04 15:08:22,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24707 conditions, 3507 events. 2141/3507 cut-off events. For 169502/169514 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 20244 event pairs, 562 based on Foata normal form. 6/3502 useless extension candidates. Maximal degree in co-relation 24634. Up to 3107 conditions per place. [2024-06-04 15:08:22,092 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 137 selfloop transitions, 56 changer transitions 0/206 dead transitions. [2024-06-04 15:08:22,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 206 transitions, 2426 flow [2024-06-04 15:08:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-04 15:08:22,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-04 15:08:22,094 INFO L175 Difference]: Start difference. First operand has 161 places, 179 transitions, 1626 flow. Second operand 7 states and 136 transitions. [2024-06-04 15:08:22,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 206 transitions, 2426 flow [2024-06-04 15:08:22,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 206 transitions, 2308 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-04 15:08:22,192 INFO L231 Difference]: Finished difference. Result has 165 places, 191 transitions, 1887 flow [2024-06-04 15:08:22,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1887, PETRI_PLACES=165, PETRI_TRANSITIONS=191} [2024-06-04 15:08:22,193 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 121 predicate places. [2024-06-04 15:08:22,193 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 191 transitions, 1887 flow [2024-06-04 15:08:22,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:22,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:22,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:22,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:08:22,196 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:22,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash -952451642, now seen corresponding path program 6 times [2024-06-04 15:08:22,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:22,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406218561] [2024-06-04 15:08:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:22,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:22,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406218561] [2024-06-04 15:08:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406218561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:22,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:22,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080915128] [2024-06-04 15:08:22,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:22,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:23,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:23,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:23,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 191 transitions, 1887 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:23,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:23,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:23,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:23,652 INFO L124 PetriNetUnfolderBase]: 2135/3499 cut-off events. [2024-06-04 15:08:23,652 INFO L125 PetriNetUnfolderBase]: For 177503/177515 co-relation queries the response was YES. [2024-06-04 15:08:23,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25180 conditions, 3499 events. 2135/3499 cut-off events. For 177503/177515 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20219 event pairs, 564 based on Foata normal form. 6/3494 useless extension candidates. Maximal degree in co-relation 25104. Up to 3102 conditions per place. [2024-06-04 15:08:23,682 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 135 selfloop transitions, 59 changer transitions 0/207 dead transitions. [2024-06-04 15:08:23,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 207 transitions, 2440 flow [2024-06-04 15:08:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:08:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:08:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-04 15:08:23,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-04 15:08:23,684 INFO L175 Difference]: Start difference. First operand has 165 places, 191 transitions, 1887 flow. Second operand 7 states and 135 transitions. [2024-06-04 15:08:23,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 207 transitions, 2440 flow [2024-06-04 15:08:23,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 207 transitions, 2286 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-04 15:08:23,858 INFO L231 Difference]: Finished difference. Result has 171 places, 194 transitions, 1936 flow [2024-06-04 15:08:23,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1936, PETRI_PLACES=171, PETRI_TRANSITIONS=194} [2024-06-04 15:08:23,858 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 127 predicate places. [2024-06-04 15:08:23,858 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 194 transitions, 1936 flow [2024-06-04 15:08:23,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:23,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:23,859 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 15:08:23,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:08:23,859 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 15:08:23,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1970009296, now seen corresponding path program 2 times [2024-06-04 15:08:23,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:23,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462386145] [2024-06-04 15:08:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:23,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:24,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:24,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462386145] [2024-06-04 15:08:24,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462386145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:24,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:24,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:24,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087082592] [2024-06-04 15:08:24,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:24,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:24,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:24,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:24,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:24,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:24,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 194 transitions, 1936 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:24,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:24,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:24,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:25,418 INFO L124 PetriNetUnfolderBase]: 2050/3374 cut-off events. [2024-06-04 15:08:25,418 INFO L125 PetriNetUnfolderBase]: For 177572/177593 co-relation queries the response was YES. [2024-06-04 15:08:25,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24294 conditions, 3374 events. 2050/3374 cut-off events. For 177572/177593 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19579 event pairs, 555 based on Foata normal form. 5/3353 useless extension candidates. Maximal degree in co-relation 24215. Up to 3005 conditions per place. [2024-06-04 15:08:25,448 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 139 selfloop transitions, 48 changer transitions 0/217 dead transitions. [2024-06-04 15:08:25,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 217 transitions, 2656 flow [2024-06-04 15:08:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 15:08:25,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-04 15:08:25,449 INFO L175 Difference]: Start difference. First operand has 171 places, 194 transitions, 1936 flow. Second operand 8 states and 148 transitions. [2024-06-04 15:08:25,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 217 transitions, 2656 flow [2024-06-04 15:08:25,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 217 transitions, 2578 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 15:08:25,615 INFO L231 Difference]: Finished difference. Result has 177 places, 205 transitions, 2136 flow [2024-06-04 15:08:25,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2136, PETRI_PLACES=177, PETRI_TRANSITIONS=205} [2024-06-04 15:08:25,616 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 133 predicate places. [2024-06-04 15:08:25,616 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 205 transitions, 2136 flow [2024-06-04 15:08:25,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:25,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:25,617 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 15:08:25,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:08:25,617 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:25,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:25,618 INFO L85 PathProgramCache]: Analyzing trace with hash -484861040, now seen corresponding path program 3 times [2024-06-04 15:08:25,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:25,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521592043] [2024-06-04 15:08:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:25,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:26,502 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 15:08:26,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521592043] [2024-06-04 15:08:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521592043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:26,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:26,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:26,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775853912] [2024-06-04 15:08:26,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:26,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:26,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:26,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:26,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 205 transitions, 2136 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:26,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:26,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:26,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:27,108 INFO L124 PetriNetUnfolderBase]: 2048/3370 cut-off events. [2024-06-04 15:08:27,108 INFO L125 PetriNetUnfolderBase]: For 184880/184899 co-relation queries the response was YES. [2024-06-04 15:08:27,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24663 conditions, 3370 events. 2048/3370 cut-off events. For 184880/184899 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19518 event pairs, 554 based on Foata normal form. 14/3358 useless extension candidates. Maximal degree in co-relation 24582. Up to 3004 conditions per place. [2024-06-04 15:08:27,137 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 136 selfloop transitions, 50 changer transitions 0/216 dead transitions. [2024-06-04 15:08:27,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 216 transitions, 2622 flow [2024-06-04 15:08:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:27,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 15:08:27,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42441860465116277 [2024-06-04 15:08:27,143 INFO L175 Difference]: Start difference. First operand has 177 places, 205 transitions, 2136 flow. Second operand 8 states and 146 transitions. [2024-06-04 15:08:27,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 216 transitions, 2622 flow [2024-06-04 15:08:27,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 216 transitions, 2514 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-04 15:08:27,293 INFO L231 Difference]: Finished difference. Result has 182 places, 205 transitions, 2134 flow [2024-06-04 15:08:27,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2134, PETRI_PLACES=182, PETRI_TRANSITIONS=205} [2024-06-04 15:08:27,294 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 138 predicate places. [2024-06-04 15:08:27,294 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 205 transitions, 2134 flow [2024-06-04 15:08:27,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:27,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:27,294 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 15:08:27,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:08:27,295 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:27,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1957122286, now seen corresponding path program 4 times [2024-06-04 15:08:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:27,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783774812] [2024-06-04 15:08:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:27,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:28,307 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 15:08:28,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783774812] [2024-06-04 15:08:28,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783774812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:28,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:28,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:28,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996807513] [2024-06-04 15:08:28,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:28,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:28,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:28,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:28,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:28,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 205 transitions, 2134 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:28,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:28,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:28,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:28,910 INFO L124 PetriNetUnfolderBase]: 2044/3363 cut-off events. [2024-06-04 15:08:28,910 INFO L125 PetriNetUnfolderBase]: For 189650/189665 co-relation queries the response was YES. [2024-06-04 15:08:28,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24739 conditions, 3363 events. 2044/3363 cut-off events. For 189650/189665 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19459 event pairs, 553 based on Foata normal form. 5/3343 useless extension candidates. Maximal degree in co-relation 24656. Up to 3001 conditions per place. [2024-06-04 15:08:28,941 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 140 selfloop transitions, 46 changer transitions 0/216 dead transitions. [2024-06-04 15:08:28,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 216 transitions, 2539 flow [2024-06-04 15:08:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 15:08:28,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273255813953488 [2024-06-04 15:08:28,942 INFO L175 Difference]: Start difference. First operand has 182 places, 205 transitions, 2134 flow. Second operand 8 states and 147 transitions. [2024-06-04 15:08:28,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 216 transitions, 2539 flow [2024-06-04 15:08:29,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 216 transitions, 2415 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:29,111 INFO L231 Difference]: Finished difference. Result has 184 places, 206 transitions, 2117 flow [2024-06-04 15:08:29,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2117, PETRI_PLACES=184, PETRI_TRANSITIONS=206} [2024-06-04 15:08:29,112 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 140 predicate places. [2024-06-04 15:08:29,112 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 206 transitions, 2117 flow [2024-06-04 15:08:29,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:29,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:29,112 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 15:08:29,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:08:29,113 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:29,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:29,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1517126572, now seen corresponding path program 7 times [2024-06-04 15:08:29,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:29,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414552686] [2024-06-04 15:08:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:29,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:29,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414552686] [2024-06-04 15:08:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414552686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:29,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:29,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:08:29,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142947079] [2024-06-04 15:08:29,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:08:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:29,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:08:29,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:08:30,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:30,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 206 transitions, 2117 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:30,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:30,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:30,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:30,591 INFO L124 PetriNetUnfolderBase]: 2187/3578 cut-off events. [2024-06-04 15:08:30,591 INFO L125 PetriNetUnfolderBase]: For 197945/197947 co-relation queries the response was YES. [2024-06-04 15:08:30,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26128 conditions, 3578 events. 2187/3578 cut-off events. For 197945/197947 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20607 event pairs, 554 based on Foata normal form. 4/3573 useless extension candidates. Maximal degree in co-relation 26044. Up to 3209 conditions per place. [2024-06-04 15:08:30,622 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 182 selfloop transitions, 53 changer transitions 0/248 dead transitions. [2024-06-04 15:08:30,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 248 transitions, 2920 flow [2024-06-04 15:08:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:08:30,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-04 15:08:30,623 INFO L175 Difference]: Start difference. First operand has 184 places, 206 transitions, 2117 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:08:30,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 248 transitions, 2920 flow [2024-06-04 15:08:30,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 248 transitions, 2802 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-04 15:08:30,808 INFO L231 Difference]: Finished difference. Result has 189 places, 227 transitions, 2439 flow [2024-06-04 15:08:30,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2439, PETRI_PLACES=189, PETRI_TRANSITIONS=227} [2024-06-04 15:08:30,808 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 145 predicate places. [2024-06-04 15:08:30,808 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 227 transitions, 2439 flow [2024-06-04 15:08:30,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:30,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:30,809 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 15:08:30,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:08:30,809 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:30,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:30,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1579744973, now seen corresponding path program 1 times [2024-06-04 15:08:30,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:30,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893149766] [2024-06-04 15:08:30,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:30,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893149766] [2024-06-04 15:08:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893149766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201840269] [2024-06-04 15:08:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:31,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:31,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:31,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:31,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 227 transitions, 2439 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:31,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:31,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:31,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:32,613 INFO L124 PetriNetUnfolderBase]: 2174/3565 cut-off events. [2024-06-04 15:08:32,613 INFO L125 PetriNetUnfolderBase]: For 202023/202023 co-relation queries the response was YES. [2024-06-04 15:08:32,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26249 conditions, 3565 events. 2174/3565 cut-off events. For 202023/202023 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 20562 event pairs, 562 based on Foata normal form. 1/3565 useless extension candidates. Maximal degree in co-relation 26162. Up to 3277 conditions per place. [2024-06-04 15:08:32,646 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 217 selfloop transitions, 18 changer transitions 0/246 dead transitions. [2024-06-04 15:08:32,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 246 transitions, 3017 flow [2024-06-04 15:08:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 15:08:32,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273255813953488 [2024-06-04 15:08:32,647 INFO L175 Difference]: Start difference. First operand has 189 places, 227 transitions, 2439 flow. Second operand 8 states and 147 transitions. [2024-06-04 15:08:32,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 246 transitions, 3017 flow [2024-06-04 15:08:32,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 246 transitions, 2889 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:32,878 INFO L231 Difference]: Finished difference. Result has 191 places, 230 transitions, 2421 flow [2024-06-04 15:08:32,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2421, PETRI_PLACES=191, PETRI_TRANSITIONS=230} [2024-06-04 15:08:32,878 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 147 predicate places. [2024-06-04 15:08:32,878 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 230 transitions, 2421 flow [2024-06-04 15:08:32,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:32,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:32,879 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 15:08:32,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:08:32,879 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:32,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:32,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1688583472, now seen corresponding path program 1 times [2024-06-04 15:08:32,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:32,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524047705] [2024-06-04 15:08:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:32,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:33,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:33,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524047705] [2024-06-04 15:08:33,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524047705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:33,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:33,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:33,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599948515] [2024-06-04 15:08:33,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:33,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:33,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:33,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:33,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 230 transitions, 2421 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:33,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:33,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:33,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:34,418 INFO L124 PetriNetUnfolderBase]: 2184/3585 cut-off events. [2024-06-04 15:08:34,418 INFO L125 PetriNetUnfolderBase]: For 214260/214260 co-relation queries the response was YES. [2024-06-04 15:08:34,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26716 conditions, 3585 events. 2184/3585 cut-off events. For 214260/214260 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20730 event pairs, 557 based on Foata normal form. 4/3588 useless extension candidates. Maximal degree in co-relation 26629. Up to 3284 conditions per place. [2024-06-04 15:08:34,452 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 220 selfloop transitions, 18 changer transitions 0/249 dead transitions. [2024-06-04 15:08:34,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 249 transitions, 3003 flow [2024-06-04 15:08:34,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 15:08:34,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273255813953488 [2024-06-04 15:08:34,453 INFO L175 Difference]: Start difference. First operand has 191 places, 230 transitions, 2421 flow. Second operand 8 states and 147 transitions. [2024-06-04 15:08:34,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 249 transitions, 3003 flow [2024-06-04 15:08:34,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 249 transitions, 2915 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:34,692 INFO L231 Difference]: Finished difference. Result has 193 places, 233 transitions, 2439 flow [2024-06-04 15:08:34,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2439, PETRI_PLACES=193, PETRI_TRANSITIONS=233} [2024-06-04 15:08:34,693 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 149 predicate places. [2024-06-04 15:08:34,693 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 233 transitions, 2439 flow [2024-06-04 15:08:34,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:34,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:34,693 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 15:08:34,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:08:34,693 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:34,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash -485121998, now seen corresponding path program 2 times [2024-06-04 15:08:34,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:34,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858351869] [2024-06-04 15:08:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:34,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:35,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:35,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858351869] [2024-06-04 15:08:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858351869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:35,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:35,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:35,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979440430] [2024-06-04 15:08:35,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:35,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:35,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:35,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:35,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:35,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 233 transitions, 2439 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:35,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:35,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:35,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:36,368 INFO L124 PetriNetUnfolderBase]: 2225/3655 cut-off events. [2024-06-04 15:08:36,368 INFO L125 PetriNetUnfolderBase]: For 231990/231992 co-relation queries the response was YES. [2024-06-04 15:08:36,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27946 conditions, 3655 events. 2225/3655 cut-off events. For 231990/231992 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 21275 event pairs, 562 based on Foata normal form. 6/3657 useless extension candidates. Maximal degree in co-relation 27858. Up to 3273 conditions per place. [2024-06-04 15:08:36,399 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 205 selfloop transitions, 42 changer transitions 0/258 dead transitions. [2024-06-04 15:08:36,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 258 transitions, 3367 flow [2024-06-04 15:08:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 15:08:36,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-04 15:08:36,401 INFO L175 Difference]: Start difference. First operand has 193 places, 233 transitions, 2439 flow. Second operand 8 states and 152 transitions. [2024-06-04 15:08:36,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 258 transitions, 3367 flow [2024-06-04 15:08:36,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 258 transitions, 3283 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:36,637 INFO L231 Difference]: Finished difference. Result has 195 places, 242 transitions, 2643 flow [2024-06-04 15:08:36,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2643, PETRI_PLACES=195, PETRI_TRANSITIONS=242} [2024-06-04 15:08:36,638 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 151 predicate places. [2024-06-04 15:08:36,638 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 242 transitions, 2643 flow [2024-06-04 15:08:36,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:36,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:36,638 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 15:08:36,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:08:36,639 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:36,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1970460718, now seen corresponding path program 3 times [2024-06-04 15:08:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:36,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026623434] [2024-06-04 15:08:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:36,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:37,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:37,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026623434] [2024-06-04 15:08:37,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026623434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:37,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:37,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:37,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142915447] [2024-06-04 15:08:37,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:37,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:37,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:37,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:37,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:37,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:37,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 242 transitions, 2643 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:37,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:37,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:37,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:38,366 INFO L124 PetriNetUnfolderBase]: 2215/3641 cut-off events. [2024-06-04 15:08:38,367 INFO L125 PetriNetUnfolderBase]: For 237662/237664 co-relation queries the response was YES. [2024-06-04 15:08:38,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28140 conditions, 3641 events. 2215/3641 cut-off events. For 237662/237664 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 21202 event pairs, 558 based on Foata normal form. 5/3645 useless extension candidates. Maximal degree in co-relation 28051. Up to 3267 conditions per place. [2024-06-04 15:08:38,396 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 202 selfloop transitions, 44 changer transitions 0/257 dead transitions. [2024-06-04 15:08:38,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 257 transitions, 3279 flow [2024-06-04 15:08:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 15:08:38,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-04 15:08:38,397 INFO L175 Difference]: Start difference. First operand has 195 places, 242 transitions, 2643 flow. Second operand 8 states and 150 transitions. [2024-06-04 15:08:38,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 257 transitions, 3279 flow [2024-06-04 15:08:38,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 257 transitions, 3142 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-04 15:08:38,602 INFO L231 Difference]: Finished difference. Result has 200 places, 242 transitions, 2601 flow [2024-06-04 15:08:38,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2506, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2601, PETRI_PLACES=200, PETRI_TRANSITIONS=242} [2024-06-04 15:08:38,603 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2024-06-04 15:08:38,603 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 242 transitions, 2601 flow [2024-06-04 15:08:38,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:38,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:38,604 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 15:08:38,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:08:38,604 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:38,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1962842158, now seen corresponding path program 4 times [2024-06-04 15:08:38,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:38,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753427785] [2024-06-04 15:08:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:39,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:39,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753427785] [2024-06-04 15:08:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753427785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:39,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224431109] [2024-06-04 15:08:39,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:39,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:39,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:39,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:39,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:39,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:39,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 242 transitions, 2601 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:39,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:39,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:39,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:40,382 INFO L124 PetriNetUnfolderBase]: 2203/3625 cut-off events. [2024-06-04 15:08:40,382 INFO L125 PetriNetUnfolderBase]: For 239547/239549 co-relation queries the response was YES. [2024-06-04 15:08:40,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27932 conditions, 3625 events. 2203/3625 cut-off events. For 239547/239549 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 21115 event pairs, 562 based on Foata normal form. 6/3628 useless extension candidates. Maximal degree in co-relation 27841. Up to 3259 conditions per place. [2024-06-04 15:08:40,412 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 204 selfloop transitions, 41 changer transitions 0/256 dead transitions. [2024-06-04 15:08:40,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 256 transitions, 3133 flow [2024-06-04 15:08:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:40,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 15:08:40,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-04 15:08:40,414 INFO L175 Difference]: Start difference. First operand has 200 places, 242 transitions, 2601 flow. Second operand 8 states and 151 transitions. [2024-06-04 15:08:40,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 256 transitions, 3133 flow [2024-06-04 15:08:40,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 256 transitions, 3013 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:40,647 INFO L231 Difference]: Finished difference. Result has 202 places, 242 transitions, 2569 flow [2024-06-04 15:08:40,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2569, PETRI_PLACES=202, PETRI_TRANSITIONS=242} [2024-06-04 15:08:40,648 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 158 predicate places. [2024-06-04 15:08:40,648 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 242 transitions, 2569 flow [2024-06-04 15:08:40,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:40,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:40,648 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 15:08:40,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:08:40,648 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:40,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1970470638, now seen corresponding path program 1 times [2024-06-04 15:08:40,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:40,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021154611] [2024-06-04 15:08:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:40,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:41,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021154611] [2024-06-04 15:08:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021154611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:41,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:41,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:08:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234570023] [2024-06-04 15:08:41,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:41,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:08:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:08:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:08:42,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:42,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 242 transitions, 2569 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:42,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:42,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:42,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:42,617 INFO L124 PetriNetUnfolderBase]: 2137/3525 cut-off events. [2024-06-04 15:08:42,618 INFO L125 PetriNetUnfolderBase]: For 241835/241839 co-relation queries the response was YES. [2024-06-04 15:08:42,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27351 conditions, 3525 events. 2137/3525 cut-off events. For 241835/241839 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20614 event pairs, 573 based on Foata normal form. 1/3504 useless extension candidates. Maximal degree in co-relation 27259. Up to 3204 conditions per place. [2024-06-04 15:08:42,651 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 198 selfloop transitions, 21 changer transitions 0/256 dead transitions. [2024-06-04 15:08:42,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 256 transitions, 3093 flow [2024-06-04 15:08:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:08:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:08:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-04 15:08:42,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2024-06-04 15:08:42,653 INFO L175 Difference]: Start difference. First operand has 202 places, 242 transitions, 2569 flow. Second operand 9 states and 156 transitions. [2024-06-04 15:08:42,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 256 transitions, 3093 flow [2024-06-04 15:08:42,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 256 transitions, 2967 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:08:42,946 INFO L231 Difference]: Finished difference. Result has 203 places, 245 transitions, 2555 flow [2024-06-04 15:08:42,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2555, PETRI_PLACES=203, PETRI_TRANSITIONS=245} [2024-06-04 15:08:42,946 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 159 predicate places. [2024-06-04 15:08:42,946 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 245 transitions, 2555 flow [2024-06-04 15:08:42,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:42,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:42,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:42,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:08:42,947 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:42,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:42,947 INFO L85 PathProgramCache]: Analyzing trace with hash 298539060, now seen corresponding path program 1 times [2024-06-04 15:08:42,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:42,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160817008] [2024-06-04 15:08:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:42,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:43,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:43,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160817008] [2024-06-04 15:08:43,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160817008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:43,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:43,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363564504] [2024-06-04 15:08:43,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:43,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:43,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:43,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:43,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:43,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 245 transitions, 2555 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:43,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:43,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:43,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:44,564 INFO L124 PetriNetUnfolderBase]: 2248/3670 cut-off events. [2024-06-04 15:08:44,564 INFO L125 PetriNetUnfolderBase]: For 253856/253856 co-relation queries the response was YES. [2024-06-04 15:08:44,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28676 conditions, 3670 events. 2248/3670 cut-off events. For 253856/253856 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 21269 event pairs, 549 based on Foata normal form. 2/3663 useless extension candidates. Maximal degree in co-relation 28583. Up to 3337 conditions per place. [2024-06-04 15:08:44,599 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 236 selfloop transitions, 24 changer transitions 0/274 dead transitions. [2024-06-04 15:08:44,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 274 transitions, 3232 flow [2024-06-04 15:08:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:08:44,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-04 15:08:44,600 INFO L175 Difference]: Start difference. First operand has 203 places, 245 transitions, 2555 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:08:44,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 274 transitions, 3232 flow [2024-06-04 15:08:44,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 274 transitions, 3056 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-04 15:08:44,916 INFO L231 Difference]: Finished difference. Result has 202 places, 249 transitions, 2525 flow [2024-06-04 15:08:44,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2525, PETRI_PLACES=202, PETRI_TRANSITIONS=249} [2024-06-04 15:08:44,916 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 158 predicate places. [2024-06-04 15:08:44,916 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 249 transitions, 2525 flow [2024-06-04 15:08:44,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:44,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:44,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:44,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:08:44,917 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 15:08:44,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1918118432, now seen corresponding path program 2 times [2024-06-04 15:08:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:44,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308796234] [2024-06-04 15:08:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:44,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:45,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:45,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:45,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308796234] [2024-06-04 15:08:45,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308796234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:45,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:45,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:08:45,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346538338] [2024-06-04 15:08:45,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:45,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:08:45,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:45,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:08:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:08:45,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:45,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 249 transitions, 2525 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:45,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:45,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:45,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:46,599 INFO L124 PetriNetUnfolderBase]: 2296/3745 cut-off events. [2024-06-04 15:08:46,600 INFO L125 PetriNetUnfolderBase]: For 266545/266545 co-relation queries the response was YES. [2024-06-04 15:08:46,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29736 conditions, 3745 events. 2296/3745 cut-off events. For 266545/266545 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 21710 event pairs, 591 based on Foata normal form. 2/3734 useless extension candidates. Maximal degree in co-relation 29642. Up to 3392 conditions per place. [2024-06-04 15:08:46,637 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 241 selfloop transitions, 34 changer transitions 0/289 dead transitions. [2024-06-04 15:08:46,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 289 transitions, 3423 flow [2024-06-04 15:08:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:08:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:08:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-04 15:08:46,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325581395348837 [2024-06-04 15:08:46,638 INFO L175 Difference]: Start difference. First operand has 202 places, 249 transitions, 2525 flow. Second operand 10 states and 186 transitions. [2024-06-04 15:08:46,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 289 transitions, 3423 flow [2024-06-04 15:08:47,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 289 transitions, 3235 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-04 15:08:47,024 INFO L231 Difference]: Finished difference. Result has 209 places, 265 transitions, 2720 flow [2024-06-04 15:08:47,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2720, PETRI_PLACES=209, PETRI_TRANSITIONS=265} [2024-06-04 15:08:47,025 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 165 predicate places. [2024-06-04 15:08:47,025 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 265 transitions, 2720 flow [2024-06-04 15:08:47,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:47,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:47,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:47,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:08:47,026 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 15:08:47,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash -448551266, now seen corresponding path program 3 times [2024-06-04 15:08:47,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:47,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319668258] [2024-06-04 15:08:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:47,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:47,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319668258] [2024-06-04 15:08:47,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319668258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:47,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:47,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:47,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404391766] [2024-06-04 15:08:47,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:47,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:47,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:47,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:47,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:47,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:47,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 265 transitions, 2720 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:47,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:47,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:47,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:48,638 INFO L124 PetriNetUnfolderBase]: 2306/3764 cut-off events. [2024-06-04 15:08:48,638 INFO L125 PetriNetUnfolderBase]: For 278628/278630 co-relation queries the response was YES. [2024-06-04 15:08:48,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30318 conditions, 3764 events. 2306/3764 cut-off events. For 278628/278630 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 21880 event pairs, 591 based on Foata normal form. 4/3755 useless extension candidates. Maximal degree in co-relation 30221. Up to 3334 conditions per place. [2024-06-04 15:08:48,688 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 229 selfloop transitions, 48 changer transitions 0/291 dead transitions. [2024-06-04 15:08:48,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 291 transitions, 3429 flow [2024-06-04 15:08:48,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 15:08:48,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-04 15:08:48,689 INFO L175 Difference]: Start difference. First operand has 209 places, 265 transitions, 2720 flow. Second operand 8 states and 158 transitions. [2024-06-04 15:08:48,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 291 transitions, 3429 flow [2024-06-04 15:08:49,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 291 transitions, 3303 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-04 15:08:49,133 INFO L231 Difference]: Finished difference. Result has 213 places, 268 transitions, 2786 flow [2024-06-04 15:08:49,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2786, PETRI_PLACES=213, PETRI_TRANSITIONS=268} [2024-06-04 15:08:49,136 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 169 predicate places. [2024-06-04 15:08:49,136 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 268 transitions, 2786 flow [2024-06-04 15:08:49,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:49,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:49,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:49,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:08:49,137 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 15:08:49,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:49,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1250402278, now seen corresponding path program 1 times [2024-06-04 15:08:49,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:49,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930796414] [2024-06-04 15:08:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:50,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930796414] [2024-06-04 15:08:50,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930796414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:50,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:50,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061886109] [2024-06-04 15:08:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:50,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:50,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:50,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 268 transitions, 2786 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:50,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:50,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:50,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:51,256 INFO L124 PetriNetUnfolderBase]: 2311/3771 cut-off events. [2024-06-04 15:08:51,256 INFO L125 PetriNetUnfolderBase]: For 289595/289595 co-relation queries the response was YES. [2024-06-04 15:08:51,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30953 conditions, 3771 events. 2311/3771 cut-off events. For 289595/289595 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 21926 event pairs, 562 based on Foata normal form. 1/3758 useless extension candidates. Maximal degree in co-relation 30855. Up to 3373 conditions per place. [2024-06-04 15:08:51,292 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 235 selfloop transitions, 44 changer transitions 0/293 dead transitions. [2024-06-04 15:08:51,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 293 transitions, 3491 flow [2024-06-04 15:08:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:51,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:08:51,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-04 15:08:51,294 INFO L175 Difference]: Start difference. First operand has 213 places, 268 transitions, 2786 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:08:51,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 293 transitions, 3491 flow [2024-06-04 15:08:51,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 293 transitions, 3318 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:51,582 INFO L231 Difference]: Finished difference. Result has 215 places, 271 transitions, 2793 flow [2024-06-04 15:08:51,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2793, PETRI_PLACES=215, PETRI_TRANSITIONS=271} [2024-06-04 15:08:51,583 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 171 predicate places. [2024-06-04 15:08:51,583 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 271 transitions, 2793 flow [2024-06-04 15:08:51,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:51,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:51,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:51,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:08:51,584 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:51,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:51,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1216160778, now seen corresponding path program 1 times [2024-06-04 15:08:51,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:51,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763454437] [2024-06-04 15:08:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:51,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:52,569 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 15:08:52,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:52,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763454437] [2024-06-04 15:08:52,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763454437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:52,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:52,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:52,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759797479] [2024-06-04 15:08:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:52,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:08:52,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 271 transitions, 2793 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:52,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:52,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:08:52,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:53,395 INFO L124 PetriNetUnfolderBase]: 2403/3875 cut-off events. [2024-06-04 15:08:53,395 INFO L125 PetriNetUnfolderBase]: For 301087/301091 co-relation queries the response was YES. [2024-06-04 15:08:53,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31802 conditions, 3875 events. 2403/3875 cut-off events. For 301087/301091 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 22181 event pairs, 586 based on Foata normal form. 6/3880 useless extension candidates. Maximal degree in co-relation 31704. Up to 3583 conditions per place. [2024-06-04 15:08:53,436 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 246 selfloop transitions, 41 changer transitions 0/292 dead transitions. [2024-06-04 15:08:53,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 292 transitions, 3494 flow [2024-06-04 15:08:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:08:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:08:53,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-04 15:08:53,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082687338501292 [2024-06-04 15:08:53,438 INFO L175 Difference]: Start difference. First operand has 215 places, 271 transitions, 2793 flow. Second operand 9 states and 158 transitions. [2024-06-04 15:08:53,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 292 transitions, 3494 flow [2024-06-04 15:08:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 292 transitions, 3336 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:53,884 INFO L231 Difference]: Finished difference. Result has 218 places, 274 transitions, 2802 flow [2024-06-04 15:08:53,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2635, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2802, PETRI_PLACES=218, PETRI_TRANSITIONS=274} [2024-06-04 15:08:53,884 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 174 predicate places. [2024-06-04 15:08:53,884 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 274 transitions, 2802 flow [2024-06-04 15:08:53,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:53,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:53,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:53,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:08:53,885 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:53,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:53,888 INFO L85 PathProgramCache]: Analyzing trace with hash -448252736, now seen corresponding path program 4 times [2024-06-04 15:08:53,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:53,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381120599] [2024-06-04 15:08:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:54,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:54,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381120599] [2024-06-04 15:08:54,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381120599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:54,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:54,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:54,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157497491] [2024-06-04 15:08:54,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:54,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:54,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:54,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:54,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 274 transitions, 2802 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:54,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:54,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:54,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:55,487 INFO L124 PetriNetUnfolderBase]: 2344/3818 cut-off events. [2024-06-04 15:08:55,488 INFO L125 PetriNetUnfolderBase]: For 317863/317881 co-relation queries the response was YES. [2024-06-04 15:08:55,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32186 conditions, 3818 events. 2344/3818 cut-off events. For 317863/317881 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 22190 event pairs, 551 based on Foata normal form. 4/3804 useless extension candidates. Maximal degree in co-relation 32087. Up to 3334 conditions per place. [2024-06-04 15:08:55,524 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 220 selfloop transitions, 63 changer transitions 0/298 dead transitions. [2024-06-04 15:08:55,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 298 transitions, 3529 flow [2024-06-04 15:08:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:08:55,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-04 15:08:55,525 INFO L175 Difference]: Start difference. First operand has 218 places, 274 transitions, 2802 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:08:55,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 298 transitions, 3529 flow [2024-06-04 15:08:55,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 298 transitions, 3383 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:55,912 INFO L231 Difference]: Finished difference. Result has 220 places, 277 transitions, 2892 flow [2024-06-04 15:08:55,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2656, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2892, PETRI_PLACES=220, PETRI_TRANSITIONS=277} [2024-06-04 15:08:55,912 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 176 predicate places. [2024-06-04 15:08:55,912 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 277 transitions, 2892 flow [2024-06-04 15:08:55,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:55,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:55,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:55,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:08:55,913 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:55,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1726292936, now seen corresponding path program 2 times [2024-06-04 15:08:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:55,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241674749] [2024-06-04 15:08:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:55,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:56,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:56,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241674749] [2024-06-04 15:08:56,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241674749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:56,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:56,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:56,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184675761] [2024-06-04 15:08:56,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:56,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:56,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:56,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:56,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:56,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:08:56,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 277 transitions, 2892 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:56,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:56,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:08:56,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:57,671 INFO L124 PetriNetUnfolderBase]: 2455/3954 cut-off events. [2024-06-04 15:08:57,671 INFO L125 PetriNetUnfolderBase]: For 336857/336859 co-relation queries the response was YES. [2024-06-04 15:08:57,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33767 conditions, 3954 events. 2455/3954 cut-off events. For 336857/336859 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 22727 event pairs, 600 based on Foata normal form. 4/3957 useless extension candidates. Maximal degree in co-relation 33667. Up to 3559 conditions per place. [2024-06-04 15:08:57,709 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 234 selfloop transitions, 69 changer transitions 0/308 dead transitions. [2024-06-04 15:08:57,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 308 transitions, 4045 flow [2024-06-04 15:08:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 15:08:57,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-04 15:08:57,711 INFO L175 Difference]: Start difference. First operand has 220 places, 277 transitions, 2892 flow. Second operand 8 states and 150 transitions. [2024-06-04 15:08:57,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 308 transitions, 4045 flow [2024-06-04 15:08:58,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 308 transitions, 3835 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-04 15:08:58,184 INFO L231 Difference]: Finished difference. Result has 223 places, 288 transitions, 3123 flow [2024-06-04 15:08:58,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3123, PETRI_PLACES=223, PETRI_TRANSITIONS=288} [2024-06-04 15:08:58,184 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 179 predicate places. [2024-06-04 15:08:58,184 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 288 transitions, 3123 flow [2024-06-04 15:08:58,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:58,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:08:58,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:08:58,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:08:58,185 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:08:58,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:08:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1928069432, now seen corresponding path program 5 times [2024-06-04 15:08:58,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:08:58,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880229070] [2024-06-04 15:08:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:08:58,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:08:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:08:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:08:59,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:08:59,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880229070] [2024-06-04 15:08:59,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880229070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:08:59,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:08:59,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:08:59,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995023972] [2024-06-04 15:08:59,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:08:59,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:08:59,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:08:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:08:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:08:59,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:08:59,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 288 transitions, 3123 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:08:59,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:08:59,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:08:59,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:08:59,869 INFO L124 PetriNetUnfolderBase]: 2424/3947 cut-off events. [2024-06-04 15:08:59,870 INFO L125 PetriNetUnfolderBase]: For 365547/365554 co-relation queries the response was YES. [2024-06-04 15:08:59,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34972 conditions, 3947 events. 2424/3947 cut-off events. For 365547/365554 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 23176 event pairs, 568 based on Foata normal form. 9/3942 useless extension candidates. Maximal degree in co-relation 34870. Up to 3337 conditions per place. [2024-06-04 15:08:59,909 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 205 selfloop transitions, 93 changer transitions 0/317 dead transitions. [2024-06-04 15:08:59,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 317 transitions, 4329 flow [2024-06-04 15:08:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:08:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:08:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-04 15:08:59,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-04 15:08:59,910 INFO L175 Difference]: Start difference. First operand has 223 places, 288 transitions, 3123 flow. Second operand 8 states and 158 transitions. [2024-06-04 15:08:59,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 317 transitions, 4329 flow [2024-06-04 15:09:00,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 317 transitions, 4191 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-04 15:09:00,414 INFO L231 Difference]: Finished difference. Result has 228 places, 297 transitions, 3497 flow [2024-06-04 15:09:00,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3497, PETRI_PLACES=228, PETRI_TRANSITIONS=297} [2024-06-04 15:09:00,415 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 184 predicate places. [2024-06-04 15:09:00,415 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 297 transitions, 3497 flow [2024-06-04 15:09:00,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:00,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:00,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:00,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:09:00,416 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:00,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:00,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1726172594, now seen corresponding path program 6 times [2024-06-04 15:09:00,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:00,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360231059] [2024-06-04 15:09:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:00,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:01,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:01,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360231059] [2024-06-04 15:09:01,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360231059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:01,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:01,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:01,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536511060] [2024-06-04 15:09:01,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:01,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:01,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:01,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:01,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:01,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:01,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 297 transitions, 3497 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:01,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:01,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:01,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:02,312 INFO L124 PetriNetUnfolderBase]: 2438/3959 cut-off events. [2024-06-04 15:09:02,312 INFO L125 PetriNetUnfolderBase]: For 379055/379058 co-relation queries the response was YES. [2024-06-04 15:09:02,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35815 conditions, 3959 events. 2438/3959 cut-off events. For 379055/379058 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 23058 event pairs, 601 based on Foata normal form. 5/3955 useless extension candidates. Maximal degree in co-relation 35711. Up to 3564 conditions per place. [2024-06-04 15:09:02,351 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 262 selfloop transitions, 39 changer transitions 0/320 dead transitions. [2024-06-04 15:09:02,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 320 transitions, 4298 flow [2024-06-04 15:09:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:02,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:02,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-04 15:09:02,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-04 15:09:02,352 INFO L175 Difference]: Start difference. First operand has 228 places, 297 transitions, 3497 flow. Second operand 8 states and 150 transitions. [2024-06-04 15:09:02,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 320 transitions, 4298 flow [2024-06-04 15:09:02,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 320 transitions, 4120 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-04 15:09:02,733 INFO L231 Difference]: Finished difference. Result has 233 places, 303 transitions, 3557 flow [2024-06-04 15:09:02,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3557, PETRI_PLACES=233, PETRI_TRANSITIONS=303} [2024-06-04 15:09:02,733 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 189 predicate places. [2024-06-04 15:09:02,734 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 303 transitions, 3557 flow [2024-06-04 15:09:02,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:02,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:02,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:02,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:09:02,734 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:02,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash 418777272, now seen corresponding path program 3 times [2024-06-04 15:09:02,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:02,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945840781] [2024-06-04 15:09:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:02,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:03,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:03,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945840781] [2024-06-04 15:09:03,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945840781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:03,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:03,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:03,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434497764] [2024-06-04 15:09:03,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:03,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:03,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:03,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:03,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:03,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:03,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 303 transitions, 3557 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:03,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:03,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:03,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:04,389 INFO L124 PetriNetUnfolderBase]: 2506/4035 cut-off events. [2024-06-04 15:09:04,389 INFO L125 PetriNetUnfolderBase]: For 381408/381410 co-relation queries the response was YES. [2024-06-04 15:09:04,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36043 conditions, 4035 events. 2506/4035 cut-off events. For 381408/381410 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 23236 event pairs, 599 based on Foata normal form. 4/4038 useless extension candidates. Maximal degree in co-relation 35937. Up to 3633 conditions per place. [2024-06-04 15:09:04,432 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 243 selfloop transitions, 74 changer transitions 0/322 dead transitions. [2024-06-04 15:09:04,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 322 transitions, 4371 flow [2024-06-04 15:09:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:04,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 15:09:04,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-04 15:09:04,433 INFO L175 Difference]: Start difference. First operand has 233 places, 303 transitions, 3557 flow. Second operand 8 states and 148 transitions. [2024-06-04 15:09:04,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 322 transitions, 4371 flow [2024-06-04 15:09:04,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 322 transitions, 4141 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-06-04 15:09:04,920 INFO L231 Difference]: Finished difference. Result has 236 places, 303 transitions, 3481 flow [2024-06-04 15:09:04,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3481, PETRI_PLACES=236, PETRI_TRANSITIONS=303} [2024-06-04 15:09:04,921 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 192 predicate places. [2024-06-04 15:09:04,921 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 303 transitions, 3481 flow [2024-06-04 15:09:04,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:04,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:04,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:04,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:09:04,922 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:04,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:04,922 INFO L85 PathProgramCache]: Analyzing trace with hash 295679124, now seen corresponding path program 1 times [2024-06-04 15:09:04,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:04,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648482316] [2024-06-04 15:09:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:04,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648482316] [2024-06-04 15:09:05,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648482316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:05,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:05,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:05,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136610667] [2024-06-04 15:09:05,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:05,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:05,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:05,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:05,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:05,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 303 transitions, 3481 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:05,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:05,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:05,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:06,607 INFO L124 PetriNetUnfolderBase]: 2440/3949 cut-off events. [2024-06-04 15:09:06,607 INFO L125 PetriNetUnfolderBase]: For 393128/393131 co-relation queries the response was YES. [2024-06-04 15:09:06,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35907 conditions, 3949 events. 2440/3949 cut-off events. For 393128/393131 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 22903 event pairs, 469 based on Foata normal form. 5/3945 useless extension candidates. Maximal degree in co-relation 35800. Up to 3554 conditions per place. [2024-06-04 15:09:06,652 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 286 selfloop transitions, 26 changer transitions 0/331 dead transitions. [2024-06-04 15:09:06,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 331 transitions, 4242 flow [2024-06-04 15:09:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-04 15:09:06,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-04 15:09:06,669 INFO L175 Difference]: Start difference. First operand has 236 places, 303 transitions, 3481 flow. Second operand 8 states and 156 transitions. [2024-06-04 15:09:06,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 331 transitions, 4242 flow [2024-06-04 15:09:07,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 331 transitions, 4096 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:09:07,141 INFO L231 Difference]: Finished difference. Result has 238 places, 305 transitions, 3456 flow [2024-06-04 15:09:07,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3456, PETRI_PLACES=238, PETRI_TRANSITIONS=305} [2024-06-04 15:09:07,142 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 194 predicate places. [2024-06-04 15:09:07,142 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 305 transitions, 3456 flow [2024-06-04 15:09:07,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:07,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:07,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:07,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:09:07,142 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:07,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash 304250004, now seen corresponding path program 2 times [2024-06-04 15:09:07,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:07,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37804475] [2024-06-04 15:09:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:07,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:08,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37804475] [2024-06-04 15:09:08,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37804475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:08,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:08,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175508965] [2024-06-04 15:09:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:08,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:08,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:08,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 305 transitions, 3456 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:08,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:08,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:08,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:08,971 INFO L124 PetriNetUnfolderBase]: 2448/3976 cut-off events. [2024-06-04 15:09:08,971 INFO L125 PetriNetUnfolderBase]: For 403729/403732 co-relation queries the response was YES. [2024-06-04 15:09:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36245 conditions, 3976 events. 2448/3976 cut-off events. For 403729/403732 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 23246 event pairs, 563 based on Foata normal form. 5/3972 useless extension candidates. Maximal degree in co-relation 36137. Up to 3596 conditions per place. [2024-06-04 15:09:09,013 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 280 selfloop transitions, 30 changer transitions 0/329 dead transitions. [2024-06-04 15:09:09,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 329 transitions, 4205 flow [2024-06-04 15:09:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 15:09:09,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476744186046513 [2024-06-04 15:09:09,021 INFO L175 Difference]: Start difference. First operand has 238 places, 305 transitions, 3456 flow. Second operand 8 states and 153 transitions. [2024-06-04 15:09:09,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 329 transitions, 4205 flow [2024-06-04 15:09:09,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 329 transitions, 4100 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-04 15:09:09,502 INFO L231 Difference]: Finished difference. Result has 240 places, 307 transitions, 3485 flow [2024-06-04 15:09:09,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3485, PETRI_PLACES=240, PETRI_TRANSITIONS=307} [2024-06-04 15:09:09,502 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 196 predicate places. [2024-06-04 15:09:09,502 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 307 transitions, 3485 flow [2024-06-04 15:09:09,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:09,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:09,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:09,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:09:09,503 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:09,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1927946486, now seen corresponding path program 3 times [2024-06-04 15:09:09,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:09,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229007587] [2024-06-04 15:09:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:09,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:10,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:10,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229007587] [2024-06-04 15:09:10,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229007587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:10,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:10,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81231602] [2024-06-04 15:09:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:10,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:10,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:10,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 307 transitions, 3485 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:10,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:10,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:10,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:11,333 INFO L124 PetriNetUnfolderBase]: 2456/3987 cut-off events. [2024-06-04 15:09:11,333 INFO L125 PetriNetUnfolderBase]: For 416429/416432 co-relation queries the response was YES. [2024-06-04 15:09:11,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36587 conditions, 3987 events. 2456/3987 cut-off events. For 416429/416432 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 23267 event pairs, 560 based on Foata normal form. 5/3983 useless extension candidates. Maximal degree in co-relation 36478. Up to 3594 conditions per place. [2024-06-04 15:09:11,380 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 269 selfloop transitions, 38 changer transitions 0/326 dead transitions. [2024-06-04 15:09:11,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 326 transitions, 4216 flow [2024-06-04 15:09:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 15:09:11,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-04 15:09:11,382 INFO L175 Difference]: Start difference. First operand has 240 places, 307 transitions, 3485 flow. Second operand 8 states and 149 transitions. [2024-06-04 15:09:11,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 326 transitions, 4216 flow [2024-06-04 15:09:11,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 326 transitions, 4008 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-04 15:09:11,906 INFO L231 Difference]: Finished difference. Result has 241 places, 309 transitions, 3430 flow [2024-06-04 15:09:11,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3430, PETRI_PLACES=241, PETRI_TRANSITIONS=309} [2024-06-04 15:09:11,906 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 197 predicate places. [2024-06-04 15:09:11,906 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 309 transitions, 3430 flow [2024-06-04 15:09:11,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:11,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:11,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:11,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:09:11,907 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:11,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1172030072, now seen corresponding path program 1 times [2024-06-04 15:09:11,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146002749] [2024-06-04 15:09:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:12,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:12,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146002749] [2024-06-04 15:09:12,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146002749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:12,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:12,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:09:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530718274] [2024-06-04 15:09:12,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:12,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:09:12,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:12,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:09:12,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:09:12,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:12,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 309 transitions, 3430 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:12,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:12,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:12,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:13,710 INFO L124 PetriNetUnfolderBase]: 2362/3858 cut-off events. [2024-06-04 15:09:13,711 INFO L125 PetriNetUnfolderBase]: For 417516/417548 co-relation queries the response was YES. [2024-06-04 15:09:13,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35601 conditions, 3858 events. 2362/3858 cut-off events. For 417516/417548 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 22555 event pairs, 561 based on Foata normal form. 9/3836 useless extension candidates. Maximal degree in co-relation 35493. Up to 3409 conditions per place. [2024-06-04 15:09:13,755 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 243 selfloop transitions, 44 changer transitions 0/329 dead transitions. [2024-06-04 15:09:13,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 329 transitions, 4125 flow [2024-06-04 15:09:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:09:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:09:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-04 15:09:13,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-04 15:09:13,765 INFO L175 Difference]: Start difference. First operand has 241 places, 309 transitions, 3430 flow. Second operand 9 states and 162 transitions. [2024-06-04 15:09:13,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 329 transitions, 4125 flow [2024-06-04 15:09:14,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 329 transitions, 3988 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-04 15:09:14,300 INFO L231 Difference]: Finished difference. Result has 244 places, 312 transitions, 3465 flow [2024-06-04 15:09:14,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3465, PETRI_PLACES=244, PETRI_TRANSITIONS=312} [2024-06-04 15:09:14,301 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 200 predicate places. [2024-06-04 15:09:14,301 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 312 transitions, 3465 flow [2024-06-04 15:09:14,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:14,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:14,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:14,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:09:14,301 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:14,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:14,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2086302140, now seen corresponding path program 2 times [2024-06-04 15:09:14,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:14,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742574062] [2024-06-04 15:09:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:14,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:15,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742574062] [2024-06-04 15:09:15,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742574062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:15,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:15,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:15,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109479003] [2024-06-04 15:09:15,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:15,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:15,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:15,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:15,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:15,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 312 transitions, 3465 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:15,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:15,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:15,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:16,362 INFO L124 PetriNetUnfolderBase]: 2471/4015 cut-off events. [2024-06-04 15:09:16,362 INFO L125 PetriNetUnfolderBase]: For 430862/430869 co-relation queries the response was YES. [2024-06-04 15:09:16,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37219 conditions, 4015 events. 2471/4015 cut-off events. For 430862/430869 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 23455 event pairs, 564 based on Foata normal form. 8/4014 useless extension candidates. Maximal degree in co-relation 37110. Up to 3579 conditions per place. [2024-06-04 15:09:16,404 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 269 selfloop transitions, 47 changer transitions 0/335 dead transitions. [2024-06-04 15:09:16,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 335 transitions, 4266 flow [2024-06-04 15:09:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:09:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:09:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:09:16,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:09:16,406 INFO L175 Difference]: Start difference. First operand has 244 places, 312 transitions, 3465 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:09:16,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 335 transitions, 4266 flow [2024-06-04 15:09:16,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 335 transitions, 4116 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-04 15:09:16,996 INFO L231 Difference]: Finished difference. Result has 246 places, 315 transitions, 3529 flow [2024-06-04 15:09:16,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3315, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3529, PETRI_PLACES=246, PETRI_TRANSITIONS=315} [2024-06-04 15:09:16,997 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 202 predicate places. [2024-06-04 15:09:16,997 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 315 transitions, 3529 flow [2024-06-04 15:09:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:16,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:16,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:16,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:09:16,998 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:16,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 25137348, now seen corresponding path program 3 times [2024-06-04 15:09:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:16,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714724473] [2024-06-04 15:09:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:16,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:18,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:18,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714724473] [2024-06-04 15:09:18,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714724473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:18,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:18,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:18,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165659612] [2024-06-04 15:09:18,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:18,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:18,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:18,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:18,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:18,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:18,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 315 transitions, 3529 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:18,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:18,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:18,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:19,078 INFO L124 PetriNetUnfolderBase]: 2476/4022 cut-off events. [2024-06-04 15:09:19,078 INFO L125 PetriNetUnfolderBase]: For 446062/446069 co-relation queries the response was YES. [2024-06-04 15:09:19,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37786 conditions, 4022 events. 2476/4022 cut-off events. For 446062/446069 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 23503 event pairs, 564 based on Foata normal form. 8/4021 useless extension candidates. Maximal degree in co-relation 37676. Up to 3573 conditions per place. [2024-06-04 15:09:19,121 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 264 selfloop transitions, 56 changer transitions 0/339 dead transitions. [2024-06-04 15:09:19,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 339 transitions, 4586 flow [2024-06-04 15:09:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:19,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-04 15:09:19,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-04 15:09:19,123 INFO L175 Difference]: Start difference. First operand has 246 places, 315 transitions, 3529 flow. Second operand 8 states and 152 transitions. [2024-06-04 15:09:19,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 339 transitions, 4586 flow [2024-06-04 15:09:19,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 339 transitions, 4406 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-04 15:09:19,643 INFO L231 Difference]: Finished difference. Result has 248 places, 321 transitions, 3701 flow [2024-06-04 15:09:19,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3349, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3701, PETRI_PLACES=248, PETRI_TRANSITIONS=321} [2024-06-04 15:09:19,643 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 204 predicate places. [2024-06-04 15:09:19,643 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 321 transitions, 3701 flow [2024-06-04 15:09:19,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:19,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:19,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:19,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:09:19,644 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:19,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:19,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1858400990, now seen corresponding path program 4 times [2024-06-04 15:09:19,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:19,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162394211] [2024-06-04 15:09:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:19,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:20,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:20,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162394211] [2024-06-04 15:09:20,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162394211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:20,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:20,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:20,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653076539] [2024-06-04 15:09:20,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:20,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:20,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:20,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:20,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 321 transitions, 3701 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:20,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:20,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:20,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:21,421 INFO L124 PetriNetUnfolderBase]: 2473/4018 cut-off events. [2024-06-04 15:09:21,421 INFO L125 PetriNetUnfolderBase]: For 459151/459158 co-relation queries the response was YES. [2024-06-04 15:09:21,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38074 conditions, 4018 events. 2473/4018 cut-off events. For 459151/459158 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 23500 event pairs, 565 based on Foata normal form. 8/4017 useless extension candidates. Maximal degree in co-relation 37963. Up to 3582 conditions per place. [2024-06-04 15:09:21,462 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 281 selfloop transitions, 42 changer transitions 0/342 dead transitions. [2024-06-04 15:09:21,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 342 transitions, 4413 flow [2024-06-04 15:09:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 15:09:21,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-04 15:09:21,463 INFO L175 Difference]: Start difference. First operand has 248 places, 321 transitions, 3701 flow. Second operand 8 states and 154 transitions. [2024-06-04 15:09:21,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 342 transitions, 4413 flow [2024-06-04 15:09:21,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 342 transitions, 4162 flow, removed 100 selfloop flow, removed 4 redundant places. [2024-06-04 15:09:21,893 INFO L231 Difference]: Finished difference. Result has 252 places, 321 transitions, 3540 flow [2024-06-04 15:09:21,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3450, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3540, PETRI_PLACES=252, PETRI_TRANSITIONS=321} [2024-06-04 15:09:21,893 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 208 predicate places. [2024-06-04 15:09:21,894 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 321 transitions, 3540 flow [2024-06-04 15:09:21,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:21,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:21,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:09:21,894 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:21,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:21,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2031254638, now seen corresponding path program 7 times [2024-06-04 15:09:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327855545] [2024-06-04 15:09:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:21,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:22,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:22,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327855545] [2024-06-04 15:09:22,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327855545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:22,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:22,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:22,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437479145] [2024-06-04 15:09:22,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:22,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:22,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:22,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:22,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:22,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:22,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 321 transitions, 3540 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:22,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:22,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:22,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:23,442 INFO L124 PetriNetUnfolderBase]: 2483/4031 cut-off events. [2024-06-04 15:09:23,443 INFO L125 PetriNetUnfolderBase]: For 471690/471693 co-relation queries the response was YES. [2024-06-04 15:09:23,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38322 conditions, 4031 events. 2483/4031 cut-off events. For 471690/471693 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 23514 event pairs, 573 based on Foata normal form. 5/4027 useless extension candidates. Maximal degree in co-relation 38209. Up to 3564 conditions per place. [2024-06-04 15:09:23,487 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 280 selfloop transitions, 46 changer transitions 0/345 dead transitions. [2024-06-04 15:09:23,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 345 transitions, 4358 flow [2024-06-04 15:09:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 15:09:23,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-04 15:09:23,511 INFO L175 Difference]: Start difference. First operand has 252 places, 321 transitions, 3540 flow. Second operand 8 states and 155 transitions. [2024-06-04 15:09:23,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 345 transitions, 4358 flow [2024-06-04 15:09:24,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 345 transitions, 4246 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:09:24,133 INFO L231 Difference]: Finished difference. Result has 253 places, 324 transitions, 3632 flow [2024-06-04 15:09:24,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3428, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3632, PETRI_PLACES=253, PETRI_TRANSITIONS=324} [2024-06-04 15:09:24,135 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 209 predicate places. [2024-06-04 15:09:24,135 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 324 transitions, 3632 flow [2024-06-04 15:09:24,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:24,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:24,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:24,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:09:24,135 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 15:09:24,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:24,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1161171988, now seen corresponding path program 4 times [2024-06-04 15:09:24,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:24,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043841771] [2024-06-04 15:09:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:24,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:24,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:24,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043841771] [2024-06-04 15:09:24,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043841771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:24,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:24,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:24,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946760136] [2024-06-04 15:09:24,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:24,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:24,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:24,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:24,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:24,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 324 transitions, 3632 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:24,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:24,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:24,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:25,792 INFO L124 PetriNetUnfolderBase]: 2567/4128 cut-off events. [2024-06-04 15:09:25,792 INFO L125 PetriNetUnfolderBase]: For 481371/481375 co-relation queries the response was YES. [2024-06-04 15:09:25,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38983 conditions, 4128 events. 2567/4128 cut-off events. For 481371/481375 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 23788 event pairs, 594 based on Foata normal form. 6/4133 useless extension candidates. Maximal degree in co-relation 38869. Up to 3814 conditions per place. [2024-06-04 15:09:25,842 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 301 selfloop transitions, 40 changer transitions 0/346 dead transitions. [2024-06-04 15:09:25,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 346 transitions, 4448 flow [2024-06-04 15:09:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:25,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-04 15:09:25,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-04 15:09:25,843 INFO L175 Difference]: Start difference. First operand has 253 places, 324 transitions, 3632 flow. Second operand 8 states and 144 transitions. [2024-06-04 15:09:25,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 346 transitions, 4448 flow [2024-06-04 15:09:26,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 346 transitions, 4190 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-04 15:09:26,380 INFO L231 Difference]: Finished difference. Result has 252 places, 327 transitions, 3541 flow [2024-06-04 15:09:26,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3541, PETRI_PLACES=252, PETRI_TRANSITIONS=327} [2024-06-04 15:09:26,381 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 208 predicate places. [2024-06-04 15:09:26,381 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 327 transitions, 3541 flow [2024-06-04 15:09:26,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:26,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:26,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:26,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:09:26,381 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:26,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1161172360, now seen corresponding path program 8 times [2024-06-04 15:09:26,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:26,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627436862] [2024-06-04 15:09:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:27,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:27,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627436862] [2024-06-04 15:09:27,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627436862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:27,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:27,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:27,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120987619] [2024-06-04 15:09:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:27,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:27,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:27,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 327 transitions, 3541 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:27,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:27,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:27,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:28,132 INFO L124 PetriNetUnfolderBase]: 2485/4037 cut-off events. [2024-06-04 15:09:28,132 INFO L125 PetriNetUnfolderBase]: For 487892/487895 co-relation queries the response was YES. [2024-06-04 15:09:28,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38291 conditions, 4037 events. 2485/4037 cut-off events. For 487892/487895 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 23589 event pairs, 607 based on Foata normal form. 5/4033 useless extension candidates. Maximal degree in co-relation 38177. Up to 3542 conditions per place. [2024-06-04 15:09:28,178 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 274 selfloop transitions, 53 changer transitions 0/347 dead transitions. [2024-06-04 15:09:28,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 347 transitions, 4259 flow [2024-06-04 15:09:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:28,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-04 15:09:28,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-04 15:09:28,180 INFO L175 Difference]: Start difference. First operand has 252 places, 327 transitions, 3541 flow. Second operand 8 states and 155 transitions. [2024-06-04 15:09:28,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 347 transitions, 4259 flow [2024-06-04 15:09:28,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 347 transitions, 4076 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-04 15:09:28,782 INFO L231 Difference]: Finished difference. Result has 254 places, 327 transitions, 3471 flow [2024-06-04 15:09:28,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3471, PETRI_PLACES=254, PETRI_TRANSITIONS=327} [2024-06-04 15:09:28,783 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 210 predicate places. [2024-06-04 15:09:28,783 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 327 transitions, 3471 flow [2024-06-04 15:09:28,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:28,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:28,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:28,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:09:28,784 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:28,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2082183110, now seen corresponding path program 5 times [2024-06-04 15:09:28,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:28,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002774897] [2024-06-04 15:09:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:28,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:29,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:29,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002774897] [2024-06-04 15:09:29,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002774897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:29,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:29,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:29,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129575910] [2024-06-04 15:09:29,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:29,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:29,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:29,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:29,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:29,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:29,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 327 transitions, 3471 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:29,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:29,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:29,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:30,421 INFO L124 PetriNetUnfolderBase]: 2587/4158 cut-off events. [2024-06-04 15:09:30,422 INFO L125 PetriNetUnfolderBase]: For 502748/502752 co-relation queries the response was YES. [2024-06-04 15:09:30,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39277 conditions, 4158 events. 2587/4158 cut-off events. For 502748/502752 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 24013 event pairs, 589 based on Foata normal form. 6/4163 useless extension candidates. Maximal degree in co-relation 39162. Up to 3760 conditions per place. [2024-06-04 15:09:30,470 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 285 selfloop transitions, 63 changer transitions 0/353 dead transitions. [2024-06-04 15:09:30,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 353 transitions, 4728 flow [2024-06-04 15:09:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 15:09:30,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273255813953488 [2024-06-04 15:09:30,472 INFO L175 Difference]: Start difference. First operand has 254 places, 327 transitions, 3471 flow. Second operand 8 states and 147 transitions. [2024-06-04 15:09:30,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 353 transitions, 4728 flow [2024-06-04 15:09:31,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 353 transitions, 4528 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 15:09:31,087 INFO L231 Difference]: Finished difference. Result has 256 places, 334 transitions, 3653 flow [2024-06-04 15:09:31,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3653, PETRI_PLACES=256, PETRI_TRANSITIONS=334} [2024-06-04 15:09:31,088 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 212 predicate places. [2024-06-04 15:09:31,088 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 334 transitions, 3653 flow [2024-06-04 15:09:31,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:31,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:31,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:31,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:09:31,089 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:31,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:31,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2082183482, now seen corresponding path program 9 times [2024-06-04 15:09:31,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:31,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268728459] [2024-06-04 15:09:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:31,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:32,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:32,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268728459] [2024-06-04 15:09:32,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268728459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:32,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:32,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:32,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272955110] [2024-06-04 15:09:32,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:32,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:32,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:32,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:32,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:32,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 334 transitions, 3653 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:32,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:32,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:32,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:32,861 INFO L124 PetriNetUnfolderBase]: 2522/4100 cut-off events. [2024-06-04 15:09:32,861 INFO L125 PetriNetUnfolderBase]: For 527456/527461 co-relation queries the response was YES. [2024-06-04 15:09:32,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39778 conditions, 4100 events. 2522/4100 cut-off events. For 527456/527461 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24146 event pairs, 604 based on Foata normal form. 7/4089 useless extension candidates. Maximal degree in co-relation 39661. Up to 3515 conditions per place. [2024-06-04 15:09:32,909 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 255 selfloop transitions, 77 changer transitions 0/354 dead transitions. [2024-06-04 15:09:32,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 354 transitions, 4498 flow [2024-06-04 15:09:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-04 15:09:32,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476744186046513 [2024-06-04 15:09:32,910 INFO L175 Difference]: Start difference. First operand has 256 places, 334 transitions, 3653 flow. Second operand 8 states and 153 transitions. [2024-06-04 15:09:32,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 354 transitions, 4498 flow [2024-06-04 15:09:33,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 354 transitions, 4344 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-04 15:09:33,528 INFO L231 Difference]: Finished difference. Result has 261 places, 337 transitions, 3793 flow [2024-06-04 15:09:33,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3499, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3793, PETRI_PLACES=261, PETRI_TRANSITIONS=337} [2024-06-04 15:09:33,528 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 217 predicate places. [2024-06-04 15:09:33,529 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 337 transitions, 3793 flow [2024-06-04 15:09:33,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:33,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:33,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:33,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:09:33,529 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:33,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:33,530 INFO L85 PathProgramCache]: Analyzing trace with hash -806493238, now seen corresponding path program 6 times [2024-06-04 15:09:33,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:33,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556580012] [2024-06-04 15:09:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:33,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:34,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:34,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556580012] [2024-06-04 15:09:34,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556580012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:34,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:34,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:34,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618190664] [2024-06-04 15:09:34,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:34,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:34,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:34,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:34,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 337 transitions, 3793 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:34,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:34,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:34,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:35,242 INFO L124 PetriNetUnfolderBase]: 2591/4170 cut-off events. [2024-06-04 15:09:35,242 INFO L125 PetriNetUnfolderBase]: For 532022/532026 co-relation queries the response was YES. [2024-06-04 15:09:35,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40452 conditions, 4170 events. 2591/4170 cut-off events. For 532022/532026 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24114 event pairs, 624 based on Foata normal form. 6/4175 useless extension candidates. Maximal degree in co-relation 40333. Up to 3769 conditions per place. [2024-06-04 15:09:35,288 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 282 selfloop transitions, 68 changer transitions 0/355 dead transitions. [2024-06-04 15:09:35,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 355 transitions, 4698 flow [2024-06-04 15:09:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-04 15:09:35,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42151162790697677 [2024-06-04 15:09:35,290 INFO L175 Difference]: Start difference. First operand has 261 places, 337 transitions, 3793 flow. Second operand 8 states and 145 transitions. [2024-06-04 15:09:35,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 355 transitions, 4698 flow [2024-06-04 15:09:36,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 355 transitions, 4372 flow, removed 88 selfloop flow, removed 6 redundant places. [2024-06-04 15:09:36,058 INFO L231 Difference]: Finished difference. Result has 263 places, 337 transitions, 3609 flow [2024-06-04 15:09:36,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3467, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3609, PETRI_PLACES=263, PETRI_TRANSITIONS=337} [2024-06-04 15:09:36,059 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 219 predicate places. [2024-06-04 15:09:36,059 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 337 transitions, 3609 flow [2024-06-04 15:09:36,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:36,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:36,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:36,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:09:36,060 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:36,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:36,060 INFO L85 PathProgramCache]: Analyzing trace with hash 541003994, now seen corresponding path program 10 times [2024-06-04 15:09:36,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:36,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117058654] [2024-06-04 15:09:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:36,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:36,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117058654] [2024-06-04 15:09:36,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117058654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:36,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:36,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238380318] [2024-06-04 15:09:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:36,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:37,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:37,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 337 transitions, 3609 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:37,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:37,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:37,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:37,878 INFO L124 PetriNetUnfolderBase]: 2548/4152 cut-off events. [2024-06-04 15:09:37,878 INFO L125 PetriNetUnfolderBase]: For 562906/562913 co-relation queries the response was YES. [2024-06-04 15:09:37,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41106 conditions, 4152 events. 2548/4152 cut-off events. For 562906/562913 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 24615 event pairs, 631 based on Foata normal form. 9/4139 useless extension candidates. Maximal degree in co-relation 40986. Up to 3422 conditions per place. [2024-06-04 15:09:37,922 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 219 selfloop transitions, 122 changer transitions 0/363 dead transitions. [2024-06-04 15:09:37,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 363 transitions, 5197 flow [2024-06-04 15:09:37,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:09:37,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-04 15:09:37,923 INFO L175 Difference]: Start difference. First operand has 263 places, 337 transitions, 3609 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:09:37,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 363 transitions, 5197 flow [2024-06-04 15:09:38,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 363 transitions, 5071 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:09:38,689 INFO L231 Difference]: Finished difference. Result has 265 places, 346 transitions, 4141 flow [2024-06-04 15:09:38,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3483, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4141, PETRI_PLACES=265, PETRI_TRANSITIONS=346} [2024-06-04 15:09:38,689 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 221 predicate places. [2024-06-04 15:09:38,689 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 346 transitions, 4141 flow [2024-06-04 15:09:38,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:38,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:38,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:38,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:09:38,690 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:38,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash -647698904, now seen corresponding path program 7 times [2024-06-04 15:09:38,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:38,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627024019] [2024-06-04 15:09:38,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:38,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627024019] [2024-06-04 15:09:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627024019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:39,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:39,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:39,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442414263] [2024-06-04 15:09:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:39,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:39,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 346 transitions, 4141 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:39,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:39,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:39,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:40,632 INFO L124 PetriNetUnfolderBase]: 2659/4280 cut-off events. [2024-06-04 15:09:40,632 INFO L125 PetriNetUnfolderBase]: For 588832/588838 co-relation queries the response was YES. [2024-06-04 15:09:40,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42954 conditions, 4280 events. 2659/4280 cut-off events. For 588832/588838 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 24942 event pairs, 594 based on Foata normal form. 8/4287 useless extension candidates. Maximal degree in co-relation 42833. Up to 3720 conditions per place. [2024-06-04 15:09:40,677 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 264 selfloop transitions, 107 changer transitions 0/376 dead transitions. [2024-06-04 15:09:40,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 376 transitions, 5737 flow [2024-06-04 15:09:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 15:09:40,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-04 15:09:40,679 INFO L175 Difference]: Start difference. First operand has 265 places, 346 transitions, 4141 flow. Second operand 8 states and 149 transitions. [2024-06-04 15:09:40,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 376 transitions, 5737 flow [2024-06-04 15:09:41,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 376 transitions, 5357 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-06-04 15:09:41,422 INFO L231 Difference]: Finished difference. Result has 270 places, 359 transitions, 4365 flow [2024-06-04 15:09:41,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4365, PETRI_PLACES=270, PETRI_TRANSITIONS=359} [2024-06-04 15:09:41,423 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 226 predicate places. [2024-06-04 15:09:41,423 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 359 transitions, 4365 flow [2024-06-04 15:09:41,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:41,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:41,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:41,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:09:41,423 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:41,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:41,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2135360168, now seen corresponding path program 8 times [2024-06-04 15:09:41,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:41,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255715805] [2024-06-04 15:09:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:41,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:42,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255715805] [2024-06-04 15:09:42,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255715805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:42,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:42,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:42,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235129373] [2024-06-04 15:09:42,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:42,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:42,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:42,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:42,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 359 transitions, 4365 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:42,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:42,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:42,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:43,369 INFO L124 PetriNetUnfolderBase]: 2685/4318 cut-off events. [2024-06-04 15:09:43,369 INFO L125 PetriNetUnfolderBase]: For 604526/604532 co-relation queries the response was YES. [2024-06-04 15:09:43,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43504 conditions, 4318 events. 2685/4318 cut-off events. For 604526/604532 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 25171 event pairs, 630 based on Foata normal form. 8/4325 useless extension candidates. Maximal degree in co-relation 43381. Up to 3745 conditions per place. [2024-06-04 15:09:43,415 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 251 selfloop transitions, 125 changer transitions 0/381 dead transitions. [2024-06-04 15:09:43,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 381 transitions, 5698 flow [2024-06-04 15:09:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 15:09:43,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273255813953488 [2024-06-04 15:09:43,416 INFO L175 Difference]: Start difference. First operand has 270 places, 359 transitions, 4365 flow. Second operand 8 states and 147 transitions. [2024-06-04 15:09:43,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 381 transitions, 5698 flow [2024-06-04 15:09:44,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 381 transitions, 5398 flow, removed 105 selfloop flow, removed 3 redundant places. [2024-06-04 15:09:44,106 INFO L231 Difference]: Finished difference. Result has 275 places, 365 transitions, 4544 flow [2024-06-04 15:09:44,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4121, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4544, PETRI_PLACES=275, PETRI_TRANSITIONS=365} [2024-06-04 15:09:44,107 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 231 predicate places. [2024-06-04 15:09:44,107 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 365 transitions, 4544 flow [2024-06-04 15:09:44,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:44,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:44,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:44,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:09:44,108 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:44,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash 541241516, now seen corresponding path program 9 times [2024-06-04 15:09:44,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:44,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266195513] [2024-06-04 15:09:44,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:44,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:45,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:45,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266195513] [2024-06-04 15:09:45,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266195513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:45,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:45,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:45,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029376844] [2024-06-04 15:09:45,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:45,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:45,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:45,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:45,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:45,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:45,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 365 transitions, 4544 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:45,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:45,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:45,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:45,897 INFO L124 PetriNetUnfolderBase]: 2679/4312 cut-off events. [2024-06-04 15:09:45,897 INFO L125 PetriNetUnfolderBase]: For 607403/607409 co-relation queries the response was YES. [2024-06-04 15:09:45,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43456 conditions, 4312 events. 2679/4312 cut-off events. For 607403/607409 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25140 event pairs, 638 based on Foata normal form. 8/4319 useless extension candidates. Maximal degree in co-relation 43331. Up to 3740 conditions per place. [2024-06-04 15:09:45,950 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 263 selfloop transitions, 114 changer transitions 0/382 dead transitions. [2024-06-04 15:09:45,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 382 transitions, 5820 flow [2024-06-04 15:09:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-04 15:09:45,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-04 15:09:45,951 INFO L175 Difference]: Start difference. First operand has 275 places, 365 transitions, 4544 flow. Second operand 8 states and 149 transitions. [2024-06-04 15:09:45,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 382 transitions, 5820 flow [2024-06-04 15:09:46,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 382 transitions, 5501 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-04 15:09:46,874 INFO L231 Difference]: Finished difference. Result has 279 places, 365 transitions, 4459 flow [2024-06-04 15:09:46,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4225, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4459, PETRI_PLACES=279, PETRI_TRANSITIONS=365} [2024-06-04 15:09:46,875 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 235 predicate places. [2024-06-04 15:09:46,875 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 365 transitions, 4459 flow [2024-06-04 15:09:46,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:46,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:46,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:46,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:09:46,875 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:46,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:46,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1735505366, now seen corresponding path program 11 times [2024-06-04 15:09:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:46,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233828130] [2024-06-04 15:09:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:46,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:47,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:47,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233828130] [2024-06-04 15:09:47,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233828130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:47,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:47,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:47,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761485690] [2024-06-04 15:09:47,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:47,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:47,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:48,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:48,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 365 transitions, 4459 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:48,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:48,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:48,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:48,864 INFO L124 PetriNetUnfolderBase]: 2599/4211 cut-off events. [2024-06-04 15:09:48,864 INFO L125 PetriNetUnfolderBase]: For 614415/614415 co-relation queries the response was YES. [2024-06-04 15:09:48,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42854 conditions, 4211 events. 2599/4211 cut-off events. For 614415/614415 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 24694 event pairs, 629 based on Foata normal form. 2/4208 useless extension candidates. Maximal degree in co-relation 42728. Up to 3756 conditions per place. [2024-06-04 15:09:48,917 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 305 selfloop transitions, 43 changer transitions 0/377 dead transitions. [2024-06-04 15:09:48,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 377 transitions, 5190 flow [2024-06-04 15:09:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 15:09:48,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42441860465116277 [2024-06-04 15:09:48,918 INFO L175 Difference]: Start difference. First operand has 279 places, 365 transitions, 4459 flow. Second operand 8 states and 146 transitions. [2024-06-04 15:09:48,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 377 transitions, 5190 flow [2024-06-04 15:09:49,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 377 transitions, 4814 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-04 15:09:49,831 INFO L231 Difference]: Finished difference. Result has 280 places, 365 transitions, 4175 flow [2024-06-04 15:09:49,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4083, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4175, PETRI_PLACES=280, PETRI_TRANSITIONS=365} [2024-06-04 15:09:49,832 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 236 predicate places. [2024-06-04 15:09:49,832 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 365 transitions, 4175 flow [2024-06-04 15:09:49,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:49,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:49,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:49,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:09:49,833 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:49,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2141074088, now seen corresponding path program 10 times [2024-06-04 15:09:49,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:49,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464492414] [2024-06-04 15:09:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:49,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464492414] [2024-06-04 15:09:50,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464492414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:50,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:50,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850588542] [2024-06-04 15:09:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:50,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:50,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:50,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:50,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:50,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 365 transitions, 4175 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:50,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:50,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:50,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:51,751 INFO L124 PetriNetUnfolderBase]: 2683/4316 cut-off events. [2024-06-04 15:09:51,752 INFO L125 PetriNetUnfolderBase]: For 623533/623539 co-relation queries the response was YES. [2024-06-04 15:09:51,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43054 conditions, 4316 events. 2683/4316 cut-off events. For 623533/623539 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25163 event pairs, 625 based on Foata normal form. 8/4323 useless extension candidates. Maximal degree in co-relation 42927. Up to 3742 conditions per place. [2024-06-04 15:09:51,805 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 250 selfloop transitions, 128 changer transitions 0/383 dead transitions. [2024-06-04 15:09:51,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 383 transitions, 5223 flow [2024-06-04 15:09:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-04 15:09:51,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42441860465116277 [2024-06-04 15:09:51,806 INFO L175 Difference]: Start difference. First operand has 280 places, 365 transitions, 4175 flow. Second operand 8 states and 146 transitions. [2024-06-04 15:09:51,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 383 transitions, 5223 flow [2024-06-04 15:09:52,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 383 transitions, 5057 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:09:52,695 INFO L231 Difference]: Finished difference. Result has 279 places, 368 transitions, 4357 flow [2024-06-04 15:09:52,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4357, PETRI_PLACES=279, PETRI_TRANSITIONS=368} [2024-06-04 15:09:52,696 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 235 predicate places. [2024-06-04 15:09:52,696 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 368 transitions, 4357 flow [2024-06-04 15:09:52,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:52,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:52,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:52,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:09:52,697 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:52,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1912757228, now seen corresponding path program 11 times [2024-06-04 15:09:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538343003] [2024-06-04 15:09:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:53,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:53,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538343003] [2024-06-04 15:09:53,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538343003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:53,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:53,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:53,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884755945] [2024-06-04 15:09:53,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:53,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:53,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:53,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:53,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 368 transitions, 4357 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:53,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:53,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:53,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:54,520 INFO L124 PetriNetUnfolderBase]: 2677/4310 cut-off events. [2024-06-04 15:09:54,520 INFO L125 PetriNetUnfolderBase]: For 630339/630345 co-relation queries the response was YES. [2024-06-04 15:09:54,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43218 conditions, 4310 events. 2677/4310 cut-off events. For 630339/630345 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 25159 event pairs, 645 based on Foata normal form. 8/4317 useless extension candidates. Maximal degree in co-relation 43091. Up to 3737 conditions per place. [2024-06-04 15:09:54,573 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 261 selfloop transitions, 120 changer transitions 0/386 dead transitions. [2024-06-04 15:09:54,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 386 transitions, 5541 flow [2024-06-04 15:09:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-04 15:09:54,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-04 15:09:54,575 INFO L175 Difference]: Start difference. First operand has 279 places, 368 transitions, 4357 flow. Second operand 8 states and 148 transitions. [2024-06-04 15:09:54,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 386 transitions, 5541 flow [2024-06-04 15:09:55,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 386 transitions, 5203 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-04 15:09:55,542 INFO L231 Difference]: Finished difference. Result has 282 places, 370 transitions, 4313 flow [2024-06-04 15:09:55,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4035, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4313, PETRI_PLACES=282, PETRI_TRANSITIONS=370} [2024-06-04 15:09:55,543 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 238 predicate places. [2024-06-04 15:09:55,543 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 370 transitions, 4313 flow [2024-06-04 15:09:55,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:55,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:55,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:55,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:09:55,544 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:55,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1913172938, now seen corresponding path program 12 times [2024-06-04 15:09:55,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:55,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691283040] [2024-06-04 15:09:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:55,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:56,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:56,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691283040] [2024-06-04 15:09:56,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691283040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:56,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:56,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:56,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88268712] [2024-06-04 15:09:56,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:56,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:56,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:56,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:09:56,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 370 transitions, 4313 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:56,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:56,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:09:56,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:09:57,477 INFO L124 PetriNetUnfolderBase]: 2671/4304 cut-off events. [2024-06-04 15:09:57,478 INFO L125 PetriNetUnfolderBase]: For 635459/635465 co-relation queries the response was YES. [2024-06-04 15:09:57,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42976 conditions, 4304 events. 2671/4304 cut-off events. For 635459/635465 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 25179 event pairs, 643 based on Foata normal form. 8/4311 useless extension candidates. Maximal degree in co-relation 42848. Up to 3732 conditions per place. [2024-06-04 15:09:57,526 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 257 selfloop transitions, 123 changer transitions 0/385 dead transitions. [2024-06-04 15:09:57,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 385 transitions, 5283 flow [2024-06-04 15:09:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:09:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:09:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-04 15:09:57,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273255813953488 [2024-06-04 15:09:57,528 INFO L175 Difference]: Start difference. First operand has 282 places, 370 transitions, 4313 flow. Second operand 8 states and 147 transitions. [2024-06-04 15:09:57,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 385 transitions, 5283 flow [2024-06-04 15:09:58,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 385 transitions, 5029 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-04 15:09:58,378 INFO L231 Difference]: Finished difference. Result has 286 places, 370 transitions, 4311 flow [2024-06-04 15:09:58,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4059, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4311, PETRI_PLACES=286, PETRI_TRANSITIONS=370} [2024-06-04 15:09:58,378 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 242 predicate places. [2024-06-04 15:09:58,379 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 370 transitions, 4311 flow [2024-06-04 15:09:58,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:58,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:09:58,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:09:58,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:09:58,379 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:09:58,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:09:58,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1912756856, now seen corresponding path program 12 times [2024-06-04 15:09:58,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:09:58,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594922050] [2024-06-04 15:09:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:09:58,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:09:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:09:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:09:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:09:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594922050] [2024-06-04 15:09:59,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594922050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:09:59,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:09:59,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:09:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283933536] [2024-06-04 15:09:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:09:59,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:09:59,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:09:59,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:09:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:09:59,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:09:59,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 370 transitions, 4311 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:09:59,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:09:59,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:09:59,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:00,270 INFO L124 PetriNetUnfolderBase]: 2585/4216 cut-off events. [2024-06-04 15:10:00,270 INFO L125 PetriNetUnfolderBase]: For 648955/648959 co-relation queries the response was YES. [2024-06-04 15:10:00,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42534 conditions, 4216 events. 2585/4216 cut-off events. For 648955/648959 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25139 event pairs, 640 based on Foata normal form. 6/4204 useless extension candidates. Maximal degree in co-relation 42405. Up to 3469 conditions per place. [2024-06-04 15:10:00,326 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 228 selfloop transitions, 127 changer transitions 0/385 dead transitions. [2024-06-04 15:10:00,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 385 transitions, 5233 flow [2024-06-04 15:10:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:10:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:10:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 15:10:00,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-04 15:10:00,327 INFO L175 Difference]: Start difference. First operand has 286 places, 370 transitions, 4311 flow. Second operand 8 states and 154 transitions. [2024-06-04 15:10:00,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 385 transitions, 5233 flow [2024-06-04 15:10:01,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 385 transitions, 4897 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-04 15:10:01,471 INFO L231 Difference]: Finished difference. Result has 287 places, 370 transitions, 4235 flow [2024-06-04 15:10:01,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4235, PETRI_PLACES=287, PETRI_TRANSITIONS=370} [2024-06-04 15:10:01,472 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 243 predicate places. [2024-06-04 15:10:01,472 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 370 transitions, 4235 flow [2024-06-04 15:10:01,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:01,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:01,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:01,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:10:01,473 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:10:01,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1781290132, now seen corresponding path program 4 times [2024-06-04 15:10:01,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:01,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121492995] [2024-06-04 15:10:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:01,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121492995] [2024-06-04 15:10:02,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121492995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:02,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:02,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:10:02,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181322539] [2024-06-04 15:10:02,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:02,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:10:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:10:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:10:02,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:02,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 370 transitions, 4235 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:02,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:02,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:02,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:03,367 INFO L124 PetriNetUnfolderBase]: 2588/4200 cut-off events. [2024-06-04 15:10:03,367 INFO L125 PetriNetUnfolderBase]: For 647572/647572 co-relation queries the response was YES. [2024-06-04 15:10:03,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42244 conditions, 4200 events. 2588/4200 cut-off events. For 647572/647572 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 24746 event pairs, 592 based on Foata normal form. 2/4197 useless extension candidates. Maximal degree in co-relation 42114. Up to 3741 conditions per place. [2024-06-04 15:10:03,420 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 312 selfloop transitions, 42 changer transitions 0/384 dead transitions. [2024-06-04 15:10:03,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 384 transitions, 5056 flow [2024-06-04 15:10:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:10:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:10:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-04 15:10:03,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42151162790697677 [2024-06-04 15:10:03,422 INFO L175 Difference]: Start difference. First operand has 287 places, 370 transitions, 4235 flow. Second operand 8 states and 145 transitions. [2024-06-04 15:10:03,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 384 transitions, 5056 flow [2024-06-04 15:10:04,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 384 transitions, 4764 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 15:10:04,386 INFO L231 Difference]: Finished difference. Result has 288 places, 372 transitions, 4116 flow [2024-06-04 15:10:04,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4116, PETRI_PLACES=288, PETRI_TRANSITIONS=372} [2024-06-04 15:10:04,387 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2024-06-04 15:10:04,387 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 372 transitions, 4116 flow [2024-06-04 15:10:04,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:04,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:04,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:04,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:10:04,388 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:10:04,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2145788630, now seen corresponding path program 2 times [2024-06-04 15:10:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:04,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033236965] [2024-06-04 15:10:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:05,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:05,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033236965] [2024-06-04 15:10:05,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033236965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:05,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:05,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:10:05,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252443120] [2024-06-04 15:10:05,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:05,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:10:05,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:05,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:10:05,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:10:05,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:05,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 372 transitions, 4116 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:05,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:05,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:05,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:06,374 INFO L124 PetriNetUnfolderBase]: 2477/4046 cut-off events. [2024-06-04 15:10:06,374 INFO L125 PetriNetUnfolderBase]: For 669943/669984 co-relation queries the response was YES. [2024-06-04 15:10:06,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41035 conditions, 4046 events. 2477/4046 cut-off events. For 669943/669984 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 24055 event pairs, 622 based on Foata normal form. 7/4011 useless extension candidates. Maximal degree in co-relation 40904. Up to 3503 conditions per place. [2024-06-04 15:10:06,426 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 257 selfloop transitions, 81 changer transitions 0/395 dead transitions. [2024-06-04 15:10:06,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 395 transitions, 5419 flow [2024-06-04 15:10:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:10:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:10:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 15:10:06,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42377260981912146 [2024-06-04 15:10:06,428 INFO L175 Difference]: Start difference. First operand has 288 places, 372 transitions, 4116 flow. Second operand 9 states and 164 transitions. [2024-06-04 15:10:06,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 395 transitions, 5419 flow [2024-06-04 15:10:07,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 395 transitions, 5256 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-04 15:10:07,298 INFO L231 Difference]: Finished difference. Result has 291 places, 381 transitions, 4373 flow [2024-06-04 15:10:07,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3953, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4373, PETRI_PLACES=291, PETRI_TRANSITIONS=381} [2024-06-04 15:10:07,298 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 247 predicate places. [2024-06-04 15:10:07,298 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 381 transitions, 4373 flow [2024-06-04 15:10:07,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:07,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:07,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:07,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:10:07,299 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:10:07,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:07,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2145774680, now seen corresponding path program 3 times [2024-06-04 15:10:07,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:07,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849282469] [2024-06-04 15:10:07,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:07,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:08,498 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 15:10:08,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849282469] [2024-06-04 15:10:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849282469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:08,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:08,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:10:08,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414735776] [2024-06-04 15:10:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:08,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:10:08,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:10:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:10:08,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:08,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 381 transitions, 4373 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:08,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:08,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:08,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:09,467 INFO L124 PetriNetUnfolderBase]: 2471/4046 cut-off events. [2024-06-04 15:10:09,467 INFO L125 PetriNetUnfolderBase]: For 672844/672860 co-relation queries the response was YES. [2024-06-04 15:10:09,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40936 conditions, 4046 events. 2471/4046 cut-off events. For 672844/672860 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 24137 event pairs, 642 based on Foata normal form. 6/4014 useless extension candidates. Maximal degree in co-relation 40804. Up to 3614 conditions per place. [2024-06-04 15:10:09,518 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 314 selfloop transitions, 21 changer transitions 0/392 dead transitions. [2024-06-04 15:10:09,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 392 transitions, 5071 flow [2024-06-04 15:10:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:10:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:10:09,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-04 15:10:09,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2024-06-04 15:10:09,519 INFO L175 Difference]: Start difference. First operand has 291 places, 381 transitions, 4373 flow. Second operand 9 states and 156 transitions. [2024-06-04 15:10:09,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 392 transitions, 5071 flow [2024-06-04 15:10:10,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 392 transitions, 4844 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-04 15:10:10,337 INFO L231 Difference]: Finished difference. Result has 296 places, 381 transitions, 4194 flow [2024-06-04 15:10:10,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4146, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4194, PETRI_PLACES=296, PETRI_TRANSITIONS=381} [2024-06-04 15:10:10,338 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 252 predicate places. [2024-06-04 15:10:10,338 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 381 transitions, 4194 flow [2024-06-04 15:10:10,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:10,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:10,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:10,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:10:10,339 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 15:10:10,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:10,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1735871786, now seen corresponding path program 4 times [2024-06-04 15:10:10,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:10,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781178669] [2024-06-04 15:10:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:10,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:11,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781178669] [2024-06-04 15:10:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781178669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:11,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:11,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:10:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816591316] [2024-06-04 15:10:11,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:11,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:10:11,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:10:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:10:11,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:11,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 381 transitions, 4194 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:11,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:11,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:11,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:12,354 INFO L124 PetriNetUnfolderBase]: 2476/4047 cut-off events. [2024-06-04 15:10:12,355 INFO L125 PetriNetUnfolderBase]: For 685231/685276 co-relation queries the response was YES. [2024-06-04 15:10:12,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40994 conditions, 4047 events. 2476/4047 cut-off events. For 685231/685276 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 24075 event pairs, 619 based on Foata normal form. 7/4012 useless extension candidates. Maximal degree in co-relation 40860. Up to 3504 conditions per place. [2024-06-04 15:10:12,403 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 266 selfloop transitions, 74 changer transitions 0/397 dead transitions. [2024-06-04 15:10:12,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 397 transitions, 5165 flow [2024-06-04 15:10:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:10:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:10:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-04 15:10:12,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-04 15:10:12,404 INFO L175 Difference]: Start difference. First operand has 296 places, 381 transitions, 4194 flow. Second operand 9 states and 165 transitions. [2024-06-04 15:10:12,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 397 transitions, 5165 flow [2024-06-04 15:10:13,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 397 transitions, 5115 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:10:13,214 INFO L231 Difference]: Finished difference. Result has 297 places, 384 transitions, 4378 flow [2024-06-04 15:10:13,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4378, PETRI_PLACES=297, PETRI_TRANSITIONS=384} [2024-06-04 15:10:13,215 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 253 predicate places. [2024-06-04 15:10:13,215 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 384 transitions, 4378 flow [2024-06-04 15:10:13,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:13,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:13,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:13,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:10:13,216 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 15:10:13,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash 940747754, now seen corresponding path program 5 times [2024-06-04 15:10:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:13,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847795544] [2024-06-04 15:10:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:13,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:14,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:14,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847795544] [2024-06-04 15:10:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847795544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:14,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:14,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:10:14,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372985342] [2024-06-04 15:10:14,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:14,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:10:14,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:14,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:10:14,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:10:14,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:14,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 384 transitions, 4378 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:14,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:14,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:14,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:14,975 INFO L124 PetriNetUnfolderBase]: 2472/4040 cut-off events. [2024-06-04 15:10:14,975 INFO L125 PetriNetUnfolderBase]: For 691113/691146 co-relation queries the response was YES. [2024-06-04 15:10:15,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41042 conditions, 4040 events. 2472/4040 cut-off events. For 691113/691146 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 24064 event pairs, 618 based on Foata normal form. 7/4006 useless extension candidates. Maximal degree in co-relation 40907. Up to 3501 conditions per place. [2024-06-04 15:10:15,030 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 259 selfloop transitions, 80 changer transitions 0/396 dead transitions. [2024-06-04 15:10:15,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 396 transitions, 5089 flow [2024-06-04 15:10:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:10:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:10:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-04 15:10:15,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-04 15:10:15,031 INFO L175 Difference]: Start difference. First operand has 297 places, 384 transitions, 4378 flow. Second operand 9 states and 163 transitions. [2024-06-04 15:10:15,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 396 transitions, 5089 flow [2024-06-04 15:10:15,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 396 transitions, 4838 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-04 15:10:15,934 INFO L231 Difference]: Finished difference. Result has 300 places, 384 transitions, 4293 flow [2024-06-04 15:10:15,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4127, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4293, PETRI_PLACES=300, PETRI_TRANSITIONS=384} [2024-06-04 15:10:15,935 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 256 predicate places. [2024-06-04 15:10:15,935 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 384 transitions, 4293 flow [2024-06-04 15:10:15,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:15,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:15,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:15,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:10:15,935 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 15:10:15,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash 19921532, now seen corresponding path program 13 times [2024-06-04 15:10:15,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:15,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391368255] [2024-06-04 15:10:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:15,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:16,792 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 15:10:16,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:16,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391368255] [2024-06-04 15:10:16,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391368255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:16,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:16,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:10:16,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89139606] [2024-06-04 15:10:16,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:16,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:10:16,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:16,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:10:16,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:10:16,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:16,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 384 transitions, 4293 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:16,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:16,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:16,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:17,879 INFO L124 PetriNetUnfolderBase]: 2699/4376 cut-off events. [2024-06-04 15:10:17,879 INFO L125 PetriNetUnfolderBase]: For 712637/712639 co-relation queries the response was YES. [2024-06-04 15:10:17,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43615 conditions, 4376 events. 2699/4376 cut-off events. For 712637/712639 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 25918 event pairs, 622 based on Foata normal form. 4/4375 useless extension candidates. Maximal degree in co-relation 43479. Up to 3867 conditions per place. [2024-06-04 15:10:17,941 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 359 selfloop transitions, 61 changer transitions 0/450 dead transitions. [2024-06-04 15:10:17,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 450 transitions, 5634 flow [2024-06-04 15:10:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:10:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:10:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-04 15:10:17,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44608879492600423 [2024-06-04 15:10:17,942 INFO L175 Difference]: Start difference. First operand has 300 places, 384 transitions, 4293 flow. Second operand 11 states and 211 transitions. [2024-06-04 15:10:17,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 450 transitions, 5634 flow [2024-06-04 15:10:18,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 450 transitions, 5398 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:10:18,879 INFO L231 Difference]: Finished difference. Result has 305 places, 416 transitions, 4665 flow [2024-06-04 15:10:18,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4081, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4665, PETRI_PLACES=305, PETRI_TRANSITIONS=416} [2024-06-04 15:10:18,880 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 261 predicate places. [2024-06-04 15:10:18,880 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 416 transitions, 4665 flow [2024-06-04 15:10:18,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:18,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:18,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:18,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:10:18,881 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 15:10:18,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:18,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1697471348, now seen corresponding path program 14 times [2024-06-04 15:10:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:18,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863996740] [2024-06-04 15:10:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:18,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:19,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863996740] [2024-06-04 15:10:19,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863996740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:19,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:19,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:10:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590144583] [2024-06-04 15:10:19,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:19,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:10:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:10:19,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:10:20,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:20,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 416 transitions, 4665 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:20,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:20,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:20,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:21,091 INFO L124 PetriNetUnfolderBase]: 2771/4492 cut-off events. [2024-06-04 15:10:21,091 INFO L125 PetriNetUnfolderBase]: For 720585/720587 co-relation queries the response was YES. [2024-06-04 15:10:21,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44682 conditions, 4492 events. 2771/4492 cut-off events. For 720585/720587 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 26735 event pairs, 625 based on Foata normal form. 4/4491 useless extension candidates. Maximal degree in co-relation 44542. Up to 3963 conditions per place. [2024-06-04 15:10:21,155 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 374 selfloop transitions, 73 changer transitions 0/477 dead transitions. [2024-06-04 15:10:21,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 477 transitions, 6126 flow [2024-06-04 15:10:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:10:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:10:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-04 15:10:21,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2024-06-04 15:10:21,157 INFO L175 Difference]: Start difference. First operand has 305 places, 416 transitions, 4665 flow. Second operand 10 states and 193 transitions. [2024-06-04 15:10:21,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 477 transitions, 6126 flow [2024-06-04 15:10:22,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 477 transitions, 5748 flow, removed 125 selfloop flow, removed 7 redundant places. [2024-06-04 15:10:22,241 INFO L231 Difference]: Finished difference. Result has 311 places, 449 transitions, 5021 flow [2024-06-04 15:10:22,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4407, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5021, PETRI_PLACES=311, PETRI_TRANSITIONS=449} [2024-06-04 15:10:22,241 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 267 predicate places. [2024-06-04 15:10:22,242 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 449 transitions, 5021 flow [2024-06-04 15:10:22,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:22,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:22,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:22,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:10:22,242 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 15:10:22,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash 256138348, now seen corresponding path program 13 times [2024-06-04 15:10:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:22,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521166930] [2024-06-04 15:10:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:23,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:23,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521166930] [2024-06-04 15:10:23,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521166930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:23,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:23,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:10:23,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350923688] [2024-06-04 15:10:23,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:23,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:10:23,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:10:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:10:23,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:10:23,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 449 transitions, 5021 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:23,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:23,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:10:23,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:24,002 INFO L124 PetriNetUnfolderBase]: 2864/4598 cut-off events. [2024-06-04 15:10:24,002 INFO L125 PetriNetUnfolderBase]: For 720322/720326 co-relation queries the response was YES. [2024-06-04 15:10:24,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45025 conditions, 4598 events. 2864/4598 cut-off events. For 720322/720326 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 27089 event pairs, 669 based on Foata normal form. 6/4603 useless extension candidates. Maximal degree in co-relation 44882. Up to 4229 conditions per place. [2024-06-04 15:10:24,075 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 427 selfloop transitions, 50 changer transitions 0/482 dead transitions. [2024-06-04 15:10:24,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 482 transitions, 6216 flow [2024-06-04 15:10:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:10:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:10:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:10:24,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:10:24,077 INFO L175 Difference]: Start difference. First operand has 311 places, 449 transitions, 5021 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:10:24,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 482 transitions, 6216 flow [2024-06-04 15:10:25,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 482 transitions, 6047 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-04 15:10:25,374 INFO L231 Difference]: Finished difference. Result has 317 places, 458 transitions, 5139 flow [2024-06-04 15:10:25,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5139, PETRI_PLACES=317, PETRI_TRANSITIONS=458} [2024-06-04 15:10:25,375 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 273 predicate places. [2024-06-04 15:10:25,376 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 458 transitions, 5139 flow [2024-06-04 15:10:25,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:25,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:25,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:25,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:10:25,376 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 15:10:25,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1838155048, now seen corresponding path program 1 times [2024-06-04 15:10:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425479962] [2024-06-04 15:10:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:26,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:26,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425479962] [2024-06-04 15:10:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425479962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:26,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:26,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:10:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484843270] [2024-06-04 15:10:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:26,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:10:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:10:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:10:26,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:10:26,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 458 transitions, 5139 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:26,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:26,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:10:26,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:27,670 INFO L124 PetriNetUnfolderBase]: 2670/4394 cut-off events. [2024-06-04 15:10:27,670 INFO L125 PetriNetUnfolderBase]: For 734320/734320 co-relation queries the response was YES. [2024-06-04 15:10:27,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43940 conditions, 4394 events. 2670/4394 cut-off events. For 734320/734320 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 26689 event pairs, 604 based on Foata normal form. 2/4377 useless extension candidates. Maximal degree in co-relation 43795. Up to 3858 conditions per place. [2024-06-04 15:10:27,728 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 428 selfloop transitions, 16 changer transitions 0/481 dead transitions. [2024-06-04 15:10:27,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 481 transitions, 6181 flow [2024-06-04 15:10:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:10:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:10:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-04 15:10:27,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-04 15:10:27,729 INFO L175 Difference]: Start difference. First operand has 317 places, 458 transitions, 5139 flow. Second operand 8 states and 157 transitions. [2024-06-04 15:10:27,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 481 transitions, 6181 flow [2024-06-04 15:10:28,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 481 transitions, 5935 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:10:28,955 INFO L231 Difference]: Finished difference. Result has 315 places, 460 transitions, 5012 flow [2024-06-04 15:10:28,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4893, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5012, PETRI_PLACES=315, PETRI_TRANSITIONS=460} [2024-06-04 15:10:28,955 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 271 predicate places. [2024-06-04 15:10:28,955 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 460 transitions, 5012 flow [2024-06-04 15:10:28,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:28,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:28,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:28,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:10:28,956 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 15:10:28,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:28,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2094942398, now seen corresponding path program 2 times [2024-06-04 15:10:28,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:28,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043179106] [2024-06-04 15:10:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:28,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:30,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:30,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043179106] [2024-06-04 15:10:30,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043179106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:30,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:30,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:10:30,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71657002] [2024-06-04 15:10:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:30,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:10:30,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:10:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:10:30,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:10:30,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 460 transitions, 5012 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:30,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:30,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:10:30,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:31,249 INFO L124 PetriNetUnfolderBase]: 2678/4406 cut-off events. [2024-06-04 15:10:31,250 INFO L125 PetriNetUnfolderBase]: For 743924/743924 co-relation queries the response was YES. [2024-06-04 15:10:31,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43731 conditions, 4406 events. 2678/4406 cut-off events. For 743924/743924 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 26823 event pairs, 640 based on Foata normal form. 2/4389 useless extension candidates. Maximal degree in co-relation 43586. Up to 3887 conditions per place. [2024-06-04 15:10:31,308 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 425 selfloop transitions, 17 changer transitions 0/479 dead transitions. [2024-06-04 15:10:31,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 479 transitions, 6038 flow [2024-06-04 15:10:31,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:10:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:10:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-04 15:10:31,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-04 15:10:31,309 INFO L175 Difference]: Start difference. First operand has 315 places, 460 transitions, 5012 flow. Second operand 8 states and 154 transitions. [2024-06-04 15:10:31,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 479 transitions, 6038 flow [2024-06-04 15:10:33,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 479 transitions, 5935 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-04 15:10:33,127 INFO L231 Difference]: Finished difference. Result has 317 places, 462 transitions, 5034 flow [2024-06-04 15:10:33,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4909, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5034, PETRI_PLACES=317, PETRI_TRANSITIONS=462} [2024-06-04 15:10:33,128 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 273 predicate places. [2024-06-04 15:10:33,128 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 462 transitions, 5034 flow [2024-06-04 15:10:33,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:33,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:33,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:33,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:10:33,128 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 15:10:33,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash -921949266, now seen corresponding path program 1 times [2024-06-04 15:10:33,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377693351] [2024-06-04 15:10:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:34,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:34,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377693351] [2024-06-04 15:10:34,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377693351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:34,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:34,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:10:34,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433086768] [2024-06-04 15:10:34,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:34,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:10:34,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:10:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:10:34,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:34,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 462 transitions, 5034 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:34,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:34,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:34,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:35,484 INFO L124 PetriNetUnfolderBase]: 2744/4474 cut-off events. [2024-06-04 15:10:35,484 INFO L125 PetriNetUnfolderBase]: For 747540/747540 co-relation queries the response was YES. [2024-06-04 15:10:35,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43872 conditions, 4474 events. 2744/4474 cut-off events. For 747540/747540 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 26858 event pairs, 668 based on Foata normal form. 2/4461 useless extension candidates. Maximal degree in co-relation 43726. Up to 4087 conditions per place. [2024-06-04 15:10:35,540 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 449 selfloop transitions, 22 changer transitions 0/482 dead transitions. [2024-06-04 15:10:35,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 482 transitions, 6138 flow [2024-06-04 15:10:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:10:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:10:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-04 15:10:35,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046511627906977 [2024-06-04 15:10:35,541 INFO L175 Difference]: Start difference. First operand has 317 places, 462 transitions, 5034 flow. Second operand 10 states and 174 transitions. [2024-06-04 15:10:35,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 482 transitions, 6138 flow [2024-06-04 15:10:37,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 482 transitions, 6029 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-04 15:10:37,310 INFO L231 Difference]: Finished difference. Result has 321 places, 465 transitions, 5083 flow [2024-06-04 15:10:37,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5083, PETRI_PLACES=321, PETRI_TRANSITIONS=465} [2024-06-04 15:10:37,310 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 277 predicate places. [2024-06-04 15:10:37,311 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 465 transitions, 5083 flow [2024-06-04 15:10:37,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:37,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:37,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:37,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:10:37,311 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:10:37,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:37,312 INFO L85 PathProgramCache]: Analyzing trace with hash -806663056, now seen corresponding path program 3 times [2024-06-04 15:10:37,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:37,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539511948] [2024-06-04 15:10:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:37,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:38,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539511948] [2024-06-04 15:10:38,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539511948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:38,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:38,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:10:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066327312] [2024-06-04 15:10:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:38,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:10:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:10:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:10:38,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:10:38,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 465 transitions, 5083 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:38,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:38,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:10:38,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:39,680 INFO L124 PetriNetUnfolderBase]: 2680/4410 cut-off events. [2024-06-04 15:10:39,680 INFO L125 PetriNetUnfolderBase]: For 766320/766320 co-relation queries the response was YES. [2024-06-04 15:10:39,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44017 conditions, 4410 events. 2680/4410 cut-off events. For 766320/766320 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 26803 event pairs, 634 based on Foata normal form. 2/4389 useless extension candidates. Maximal degree in co-relation 43870. Up to 3898 conditions per place. [2024-06-04 15:10:39,735 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 430 selfloop transitions, 17 changer transitions 0/484 dead transitions. [2024-06-04 15:10:39,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 484 transitions, 6135 flow [2024-06-04 15:10:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:10:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:10:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 15:10:39,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-04 15:10:39,736 INFO L175 Difference]: Start difference. First operand has 321 places, 465 transitions, 5083 flow. Second operand 8 states and 151 transitions. [2024-06-04 15:10:39,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 484 transitions, 6135 flow [2024-06-04 15:10:41,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 484 transitions, 5999 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-04 15:10:41,252 INFO L231 Difference]: Finished difference. Result has 322 places, 470 transitions, 5108 flow [2024-06-04 15:10:41,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4947, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5108, PETRI_PLACES=322, PETRI_TRANSITIONS=470} [2024-06-04 15:10:41,253 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 278 predicate places. [2024-06-04 15:10:41,253 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 470 transitions, 5108 flow [2024-06-04 15:10:41,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:41,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:41,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:41,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:10:41,253 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:10:41,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash -641023922, now seen corresponding path program 4 times [2024-06-04 15:10:41,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:41,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812317561] [2024-06-04 15:10:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:41,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:42,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:42,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812317561] [2024-06-04 15:10:42,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812317561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:42,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:42,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:10:42,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803164644] [2024-06-04 15:10:42,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:42,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:10:42,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:42,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:10:42,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:10:42,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-04 15:10:42,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 470 transitions, 5108 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:42,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:42,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-04 15:10:42,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:43,405 INFO L124 PetriNetUnfolderBase]: 2675/4404 cut-off events. [2024-06-04 15:10:43,405 INFO L125 PetriNetUnfolderBase]: For 771446/771448 co-relation queries the response was YES. [2024-06-04 15:10:43,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44090 conditions, 4404 events. 2675/4404 cut-off events. For 771446/771448 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 26798 event pairs, 633 based on Foata normal form. 4/4381 useless extension candidates. Maximal degree in co-relation 43941. Up to 3882 conditions per place. [2024-06-04 15:10:43,460 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 425 selfloop transitions, 24 changer transitions 0/486 dead transitions. [2024-06-04 15:10:43,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 486 transitions, 6155 flow [2024-06-04 15:10:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:10:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:10:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-04 15:10:43,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-04 15:10:43,461 INFO L175 Difference]: Start difference. First operand has 322 places, 470 transitions, 5108 flow. Second operand 8 states and 151 transitions. [2024-06-04 15:10:43,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 486 transitions, 6155 flow [2024-06-04 15:10:45,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 486 transitions, 6040 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-04 15:10:45,324 INFO L231 Difference]: Finished difference. Result has 326 places, 475 transitions, 5173 flow [2024-06-04 15:10:45,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4993, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5173, PETRI_PLACES=326, PETRI_TRANSITIONS=475} [2024-06-04 15:10:45,325 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 282 predicate places. [2024-06-04 15:10:45,325 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 475 transitions, 5173 flow [2024-06-04 15:10:45,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:45,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:45,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:45,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:10:45,326 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:10:45,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:45,326 INFO L85 PathProgramCache]: Analyzing trace with hash 955049418, now seen corresponding path program 1 times [2024-06-04 15:10:45,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:45,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387648731] [2024-06-04 15:10:45,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:45,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:46,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387648731] [2024-06-04 15:10:46,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387648731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:46,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:46,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:10:46,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955641812] [2024-06-04 15:10:46,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:46,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:10:46,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:46,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:10:46,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:10:46,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:46,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 475 transitions, 5173 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:46,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:46,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:46,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:47,776 INFO L124 PetriNetUnfolderBase]: 2647/4325 cut-off events. [2024-06-04 15:10:47,776 INFO L125 PetriNetUnfolderBase]: For 771894/771912 co-relation queries the response was YES. [2024-06-04 15:10:47,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43401 conditions, 4325 events. 2647/4325 cut-off events. For 771894/771912 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 25981 event pairs, 656 based on Foata normal form. 2/4277 useless extension candidates. Maximal degree in co-relation 43250. Up to 3853 conditions per place. [2024-06-04 15:10:47,833 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 407 selfloop transitions, 23 changer transitions 0/490 dead transitions. [2024-06-04 15:10:47,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 490 transitions, 6151 flow [2024-06-04 15:10:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:10:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:10:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-04 15:10:47,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39767441860465114 [2024-06-04 15:10:47,835 INFO L175 Difference]: Start difference. First operand has 326 places, 475 transitions, 5173 flow. Second operand 10 states and 171 transitions. [2024-06-04 15:10:47,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 490 transitions, 6151 flow [2024-06-04 15:10:49,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 490 transitions, 6016 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-04 15:10:49,432 INFO L231 Difference]: Finished difference. Result has 331 places, 477 transitions, 5175 flow [2024-06-04 15:10:49,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5038, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5175, PETRI_PLACES=331, PETRI_TRANSITIONS=477} [2024-06-04 15:10:49,433 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 287 predicate places. [2024-06-04 15:10:49,433 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 477 transitions, 5175 flow [2024-06-04 15:10:49,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:49,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:49,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:49,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:10:49,433 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:10:49,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash -194811404, now seen corresponding path program 1 times [2024-06-04 15:10:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417607119] [2024-06-04 15:10:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:50,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:50,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417607119] [2024-06-04 15:10:50,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417607119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:50,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:50,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:10:50,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962091296] [2024-06-04 15:10:50,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:50,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:10:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:50,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:10:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:10:50,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:10:50,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 477 transitions, 5175 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:50,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:50,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:10:50,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:51,730 INFO L124 PetriNetUnfolderBase]: 2805/4553 cut-off events. [2024-06-04 15:10:51,730 INFO L125 PetriNetUnfolderBase]: For 787892/787894 co-relation queries the response was YES. [2024-06-04 15:10:51,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45347 conditions, 4553 events. 2805/4553 cut-off events. For 787892/787894 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 27268 event pairs, 618 based on Foata normal form. 3/4543 useless extension candidates. Maximal degree in co-relation 45195. Up to 4003 conditions per place. [2024-06-04 15:10:51,789 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 417 selfloop transitions, 59 changer transitions 0/507 dead transitions. [2024-06-04 15:10:51,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 507 transitions, 6373 flow [2024-06-04 15:10:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:10:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:10:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 15:10:51,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-04 15:10:51,790 INFO L175 Difference]: Start difference. First operand has 331 places, 477 transitions, 5175 flow. Second operand 9 states and 174 transitions. [2024-06-04 15:10:51,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 507 transitions, 6373 flow [2024-06-04 15:10:53,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 507 transitions, 6252 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-04 15:10:53,418 INFO L231 Difference]: Finished difference. Result has 332 places, 480 transitions, 5330 flow [2024-06-04 15:10:53,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5330, PETRI_PLACES=332, PETRI_TRANSITIONS=480} [2024-06-04 15:10:53,418 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 288 predicate places. [2024-06-04 15:10:53,419 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 480 transitions, 5330 flow [2024-06-04 15:10:53,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:53,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:53,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:53,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:10:53,419 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 15:10:53,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:53,420 INFO L85 PathProgramCache]: Analyzing trace with hash 664777928, now seen corresponding path program 1 times [2024-06-04 15:10:53,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:53,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183392891] [2024-06-04 15:10:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:53,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:54,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:54,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183392891] [2024-06-04 15:10:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183392891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:54,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:54,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:10:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173630898] [2024-06-04 15:10:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:54,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:10:54,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:54,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:10:54,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:10:54,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:10:54,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 480 transitions, 5330 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:54,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:54,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:10:54,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:55,566 INFO L124 PetriNetUnfolderBase]: 2887/4639 cut-off events. [2024-06-04 15:10:55,567 INFO L125 PetriNetUnfolderBase]: For 810536/810538 co-relation queries the response was YES. [2024-06-04 15:10:55,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46419 conditions, 4639 events. 2887/4639 cut-off events. For 810536/810538 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 27353 event pairs, 644 based on Foata normal form. 4/4642 useless extension candidates. Maximal degree in co-relation 46266. Up to 4191 conditions per place. [2024-06-04 15:10:55,628 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 430 selfloop transitions, 74 changer transitions 0/509 dead transitions. [2024-06-04 15:10:55,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 509 transitions, 6554 flow [2024-06-04 15:10:55,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:10:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:10:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-04 15:10:55,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-04 15:10:55,630 INFO L175 Difference]: Start difference. First operand has 332 places, 480 transitions, 5330 flow. Second operand 9 states and 165 transitions. [2024-06-04 15:10:55,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 509 transitions, 6554 flow [2024-06-04 15:10:57,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 509 transitions, 6288 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-04 15:10:57,245 INFO L231 Difference]: Finished difference. Result has 334 places, 483 transitions, 5343 flow [2024-06-04 15:10:57,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5064, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5343, PETRI_PLACES=334, PETRI_TRANSITIONS=483} [2024-06-04 15:10:57,246 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 290 predicate places. [2024-06-04 15:10:57,246 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 483 transitions, 5343 flow [2024-06-04 15:10:57,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:57,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:10:57,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:10:57,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:10:57,247 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:10:57,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:10:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash 842146598, now seen corresponding path program 2 times [2024-06-04 15:10:57,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:10:57,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849964601] [2024-06-04 15:10:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:10:57,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:10:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:10:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:10:58,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:10:58,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849964601] [2024-06-04 15:10:58,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849964601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:10:58,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:10:58,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:10:58,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81415309] [2024-06-04 15:10:58,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:10:58,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:10:58,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:10:58,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:10:58,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:10:58,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:10:58,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 483 transitions, 5343 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:10:58,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:10:58,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:10:58,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:10:59,344 INFO L124 PetriNetUnfolderBase]: 2918/4686 cut-off events. [2024-06-04 15:10:59,344 INFO L125 PetriNetUnfolderBase]: For 844268/844270 co-relation queries the response was YES. [2024-06-04 15:10:59,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47643 conditions, 4686 events. 2918/4686 cut-off events. For 844268/844270 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 27646 event pairs, 596 based on Foata normal form. 4/4689 useless extension candidates. Maximal degree in co-relation 47489. Up to 4130 conditions per place. [2024-06-04 15:10:59,411 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 403 selfloop transitions, 113 changer transitions 0/521 dead transitions. [2024-06-04 15:10:59,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 521 transitions, 6956 flow [2024-06-04 15:10:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:10:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:10:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-04 15:10:59,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255813953488372 [2024-06-04 15:10:59,412 INFO L175 Difference]: Start difference. First operand has 334 places, 483 transitions, 5343 flow. Second operand 10 states and 183 transitions. [2024-06-04 15:10:59,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 521 transitions, 6956 flow [2024-06-04 15:11:01,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 521 transitions, 6709 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-04 15:11:01,326 INFO L231 Difference]: Finished difference. Result has 338 places, 492 transitions, 5632 flow [2024-06-04 15:11:01,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5096, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5632, PETRI_PLACES=338, PETRI_TRANSITIONS=492} [2024-06-04 15:11:01,326 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 294 predicate places. [2024-06-04 15:11:01,326 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 492 transitions, 5632 flow [2024-06-04 15:11:01,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:01,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:01,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:01,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:11:01,327 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:01,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash 841909448, now seen corresponding path program 3 times [2024-06-04 15:11:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328356261] [2024-06-04 15:11:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:02,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:02,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328356261] [2024-06-04 15:11:02,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328356261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:02,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:02,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:02,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432870636] [2024-06-04 15:11:02,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:02,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:02,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:02,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:02,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:02,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:02,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 492 transitions, 5632 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:02,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:02,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:02,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:03,427 INFO L124 PetriNetUnfolderBase]: 2912/4680 cut-off events. [2024-06-04 15:11:03,427 INFO L125 PetriNetUnfolderBase]: For 855692/855694 co-relation queries the response was YES. [2024-06-04 15:11:03,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47898 conditions, 4680 events. 2912/4680 cut-off events. For 855692/855694 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 27661 event pairs, 598 based on Foata normal form. 4/4683 useless extension candidates. Maximal degree in co-relation 47742. Up to 4125 conditions per place. [2024-06-04 15:11:03,497 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 408 selfloop transitions, 107 changer transitions 0/520 dead transitions. [2024-06-04 15:11:03,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 520 transitions, 6774 flow [2024-06-04 15:11:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:11:03,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:11:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-04 15:11:03,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255813953488372 [2024-06-04 15:11:03,499 INFO L175 Difference]: Start difference. First operand has 338 places, 492 transitions, 5632 flow. Second operand 10 states and 183 transitions. [2024-06-04 15:11:03,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 520 transitions, 6774 flow [2024-06-04 15:11:05,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 520 transitions, 6434 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-04 15:11:05,733 INFO L231 Difference]: Finished difference. Result has 342 places, 492 transitions, 5517 flow [2024-06-04 15:11:05,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5292, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5517, PETRI_PLACES=342, PETRI_TRANSITIONS=492} [2024-06-04 15:11:05,734 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 298 predicate places. [2024-06-04 15:11:05,734 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 492 transitions, 5517 flow [2024-06-04 15:11:05,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:05,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:05,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:05,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:11:05,735 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:05,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash -56167934, now seen corresponding path program 2 times [2024-06-04 15:11:05,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:05,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039704953] [2024-06-04 15:11:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:05,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:06,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:06,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039704953] [2024-06-04 15:11:06,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039704953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:06,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:06,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:06,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504379023] [2024-06-04 15:11:06,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:06,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:06,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:06,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:06,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:06,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:11:06,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 492 transitions, 5517 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:06,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:06,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:11:06,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:07,948 INFO L124 PetriNetUnfolderBase]: 2854/4629 cut-off events. [2024-06-04 15:11:07,948 INFO L125 PetriNetUnfolderBase]: For 866988/866988 co-relation queries the response was YES. [2024-06-04 15:11:07,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47869 conditions, 4629 events. 2854/4629 cut-off events. For 866988/866988 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 27773 event pairs, 587 based on Foata normal form. 1/4616 useless extension candidates. Maximal degree in co-relation 47711. Up to 3893 conditions per place. [2024-06-04 15:11:08,015 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 402 selfloop transitions, 87 changer transitions 0/524 dead transitions. [2024-06-04 15:11:08,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 524 transitions, 6784 flow [2024-06-04 15:11:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:08,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-04 15:11:08,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625322997416021 [2024-06-04 15:11:08,017 INFO L175 Difference]: Start difference. First operand has 342 places, 492 transitions, 5517 flow. Second operand 9 states and 179 transitions. [2024-06-04 15:11:08,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 524 transitions, 6784 flow [2024-06-04 15:11:09,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 524 transitions, 6603 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:11:09,914 INFO L231 Difference]: Finished difference. Result has 344 places, 498 transitions, 5710 flow [2024-06-04 15:11:09,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5710, PETRI_PLACES=344, PETRI_TRANSITIONS=498} [2024-06-04 15:11:09,914 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 300 predicate places. [2024-06-04 15:11:09,914 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 498 transitions, 5710 flow [2024-06-04 15:11:09,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:09,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:09,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:09,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:11:09,915 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 15:11:09,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1020185698, now seen corresponding path program 4 times [2024-06-04 15:11:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:09,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423748782] [2024-06-04 15:11:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:10,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:10,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423748782] [2024-06-04 15:11:10,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423748782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:10,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:10,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:10,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007575291] [2024-06-04 15:11:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:10,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:10,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:10,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 498 transitions, 5710 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:10,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:10,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:10,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:12,069 INFO L124 PetriNetUnfolderBase]: 2938/4718 cut-off events. [2024-06-04 15:11:12,069 INFO L125 PetriNetUnfolderBase]: For 893366/893368 co-relation queries the response was YES. [2024-06-04 15:11:12,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48973 conditions, 4718 events. 2938/4718 cut-off events. For 893366/893368 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 27939 event pairs, 651 based on Foata normal form. 4/4721 useless extension candidates. Maximal degree in co-relation 48814. Up to 4236 conditions per place. [2024-06-04 15:11:12,139 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 442 selfloop transitions, 79 changer transitions 0/526 dead transitions. [2024-06-04 15:11:12,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 526 transitions, 6985 flow [2024-06-04 15:11:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:12,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:11:12,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:11:12,140 INFO L175 Difference]: Start difference. First operand has 344 places, 498 transitions, 5710 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:11:12,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 526 transitions, 6985 flow [2024-06-04 15:11:14,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 526 transitions, 6663 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-04 15:11:14,213 INFO L231 Difference]: Finished difference. Result has 347 places, 501 transitions, 5688 flow [2024-06-04 15:11:14,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5388, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5688, PETRI_PLACES=347, PETRI_TRANSITIONS=501} [2024-06-04 15:11:14,214 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 303 predicate places. [2024-06-04 15:11:14,214 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 501 transitions, 5688 flow [2024-06-04 15:11:14,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:14,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:14,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:14,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:11:14,214 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 15:11:14,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:14,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1014943474, now seen corresponding path program 3 times [2024-06-04 15:11:14,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:14,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730331967] [2024-06-04 15:11:14,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:14,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:15,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:15,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730331967] [2024-06-04 15:11:15,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730331967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:15,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:15,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:15,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57034428] [2024-06-04 15:11:15,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:15,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:15,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:15,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:11:15,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 501 transitions, 5688 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:15,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:15,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:11:15,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:16,453 INFO L124 PetriNetUnfolderBase]: 2869/4652 cut-off events. [2024-06-04 15:11:16,453 INFO L125 PetriNetUnfolderBase]: For 911371/911371 co-relation queries the response was YES. [2024-06-04 15:11:16,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49146 conditions, 4652 events. 2869/4652 cut-off events. For 911371/911371 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 27904 event pairs, 627 based on Foata normal form. 1/4639 useless extension candidates. Maximal degree in co-relation 48986. Up to 3910 conditions per place. [2024-06-04 15:11:16,521 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 401 selfloop transitions, 93 changer transitions 0/530 dead transitions. [2024-06-04 15:11:16,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 530 transitions, 6947 flow [2024-06-04 15:11:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-04 15:11:16,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-04 15:11:16,522 INFO L175 Difference]: Start difference. First operand has 347 places, 501 transitions, 5688 flow. Second operand 9 states and 178 transitions. [2024-06-04 15:11:16,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 530 transitions, 6947 flow [2024-06-04 15:11:18,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 530 transitions, 6669 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-04 15:11:18,406 INFO L231 Difference]: Finished difference. Result has 349 places, 504 transitions, 5778 flow [2024-06-04 15:11:18,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5410, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5778, PETRI_PLACES=349, PETRI_TRANSITIONS=504} [2024-06-04 15:11:18,407 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 305 predicate places. [2024-06-04 15:11:18,407 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 504 transitions, 5778 flow [2024-06-04 15:11:18,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:18,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:18,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:18,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:11:18,408 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:18,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:18,409 INFO L85 PathProgramCache]: Analyzing trace with hash 775640464, now seen corresponding path program 1 times [2024-06-04 15:11:18,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:18,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815089979] [2024-06-04 15:11:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:18,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:19,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:19,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815089979] [2024-06-04 15:11:19,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815089979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:19,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:19,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:19,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033878578] [2024-06-04 15:11:19,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:19,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:19,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:19,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:19,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:19,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:19,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 504 transitions, 5778 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:19,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:19,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:19,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:20,916 INFO L124 PetriNetUnfolderBase]: 2964/4766 cut-off events. [2024-06-04 15:11:20,916 INFO L125 PetriNetUnfolderBase]: For 931304/931306 co-relation queries the response was YES. [2024-06-04 15:11:20,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50205 conditions, 4766 events. 2964/4766 cut-off events. For 931304/931306 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 28333 event pairs, 676 based on Foata normal form. 3/4767 useless extension candidates. Maximal degree in co-relation 50044. Up to 4341 conditions per place. [2024-06-04 15:11:20,986 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 476 selfloop transitions, 53 changer transitions 0/534 dead transitions. [2024-06-04 15:11:20,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 534 transitions, 7084 flow [2024-06-04 15:11:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:11:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:11:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-04 15:11:20,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2024-06-04 15:11:20,988 INFO L175 Difference]: Start difference. First operand has 349 places, 504 transitions, 5778 flow. Second operand 10 states and 175 transitions. [2024-06-04 15:11:20,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 534 transitions, 7084 flow [2024-06-04 15:11:23,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 534 transitions, 6701 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-04 15:11:23,133 INFO L231 Difference]: Finished difference. Result has 352 places, 513 transitions, 5694 flow [2024-06-04 15:11:23,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5403, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5694, PETRI_PLACES=352, PETRI_TRANSITIONS=513} [2024-06-04 15:11:23,133 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 308 predicate places. [2024-06-04 15:11:23,133 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 513 transitions, 5694 flow [2024-06-04 15:11:23,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:23,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:23,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:23,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:11:23,134 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:23,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:23,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1263489164, now seen corresponding path program 4 times [2024-06-04 15:11:23,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:23,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377647186] [2024-06-04 15:11:23,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:23,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:24,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:24,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377647186] [2024-06-04 15:11:24,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377647186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:24,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:24,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:24,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281450608] [2024-06-04 15:11:24,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:24,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:24,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:24,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:24,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:11:24,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 513 transitions, 5694 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:24,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:24,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:11:24,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:25,629 INFO L124 PetriNetUnfolderBase]: 2954/4802 cut-off events. [2024-06-04 15:11:25,630 INFO L125 PetriNetUnfolderBase]: For 952800/952800 co-relation queries the response was YES. [2024-06-04 15:11:25,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50529 conditions, 4802 events. 2954/4802 cut-off events. For 952800/952800 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 29147 event pairs, 658 based on Foata normal form. 1/4789 useless extension candidates. Maximal degree in co-relation 50366. Up to 3988 conditions per place. [2024-06-04 15:11:25,709 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 412 selfloop transitions, 111 changer transitions 0/560 dead transitions. [2024-06-04 15:11:25,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 560 transitions, 7148 flow [2024-06-04 15:11:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:11:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:11:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-04 15:11:25,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-04 15:11:25,711 INFO L175 Difference]: Start difference. First operand has 352 places, 513 transitions, 5694 flow. Second operand 10 states and 190 transitions. [2024-06-04 15:11:25,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 560 transitions, 7148 flow [2024-06-04 15:11:28,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 560 transitions, 6960 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-04 15:11:28,328 INFO L231 Difference]: Finished difference. Result has 359 places, 537 transitions, 6117 flow [2024-06-04 15:11:28,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6117, PETRI_PLACES=359, PETRI_TRANSITIONS=537} [2024-06-04 15:11:28,329 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 315 predicate places. [2024-06-04 15:11:28,329 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 537 transitions, 6117 flow [2024-06-04 15:11:28,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:28,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:28,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:28,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:11:28,330 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:28,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:28,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1010931268, now seen corresponding path program 5 times [2024-06-04 15:11:28,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:28,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364594266] [2024-06-04 15:11:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:28,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:29,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:29,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364594266] [2024-06-04 15:11:29,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364594266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:29,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:29,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:29,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151357996] [2024-06-04 15:11:29,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:29,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:29,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:29,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:29,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:29,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 537 transitions, 6117 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:29,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:29,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:29,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:30,579 INFO L124 PetriNetUnfolderBase]: 3054/4916 cut-off events. [2024-06-04 15:11:30,580 INFO L125 PetriNetUnfolderBase]: For 996553/996555 co-relation queries the response was YES. [2024-06-04 15:11:30,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52478 conditions, 4916 events. 3054/4916 cut-off events. For 996553/996555 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 29375 event pairs, 647 based on Foata normal form. 4/4919 useless extension candidates. Maximal degree in co-relation 52312. Up to 4232 conditions per place. [2024-06-04 15:11:30,660 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 444 selfloop transitions, 118 changer transitions 0/567 dead transitions. [2024-06-04 15:11:30,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 567 transitions, 7852 flow [2024-06-04 15:11:30,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 15:11:30,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-04 15:11:30,662 INFO L175 Difference]: Start difference. First operand has 359 places, 537 transitions, 6117 flow. Second operand 9 states and 168 transitions. [2024-06-04 15:11:30,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 567 transitions, 7852 flow [2024-06-04 15:11:32,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 567 transitions, 7556 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-06-04 15:11:32,857 INFO L231 Difference]: Finished difference. Result has 364 places, 543 transitions, 6365 flow [2024-06-04 15:11:32,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5821, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6365, PETRI_PLACES=364, PETRI_TRANSITIONS=543} [2024-06-04 15:11:32,858 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 320 predicate places. [2024-06-04 15:11:32,858 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 543 transitions, 6365 flow [2024-06-04 15:11:32,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:32,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:32,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:32,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:11:32,859 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:32,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:32,859 INFO L85 PathProgramCache]: Analyzing trace with hash -46897105, now seen corresponding path program 1 times [2024-06-04 15:11:32,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:32,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190781866] [2024-06-04 15:11:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:33,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:33,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190781866] [2024-06-04 15:11:33,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190781866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:33,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:33,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:33,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319446533] [2024-06-04 15:11:33,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:33,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:33,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:33,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:33,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:33,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:33,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 543 transitions, 6365 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:33,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:33,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:33,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:34,994 INFO L124 PetriNetUnfolderBase]: 3064/4931 cut-off events. [2024-06-04 15:11:34,995 INFO L125 PetriNetUnfolderBase]: For 1022106/1022110 co-relation queries the response was YES. [2024-06-04 15:11:35,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53129 conditions, 4931 events. 3064/4931 cut-off events. For 1022106/1022110 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 29508 event pairs, 619 based on Foata normal form. 6/4936 useless extension candidates. Maximal degree in co-relation 52962. Up to 4475 conditions per place. [2024-06-04 15:11:35,069 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 504 selfloop transitions, 60 changer transitions 0/569 dead transitions. [2024-06-04 15:11:35,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 569 transitions, 7698 flow [2024-06-04 15:11:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-04 15:11:35,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-04 15:11:35,071 INFO L175 Difference]: Start difference. First operand has 364 places, 543 transitions, 6365 flow. Second operand 9 states and 162 transitions. [2024-06-04 15:11:35,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 569 transitions, 7698 flow [2024-06-04 15:11:37,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 569 transitions, 7388 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-06-04 15:11:37,407 INFO L231 Difference]: Finished difference. Result has 368 places, 546 transitions, 6297 flow [2024-06-04 15:11:37,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6055, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6297, PETRI_PLACES=368, PETRI_TRANSITIONS=546} [2024-06-04 15:11:37,407 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 324 predicate places. [2024-06-04 15:11:37,408 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 546 transitions, 6297 flow [2024-06-04 15:11:37,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:37,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:37,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:37,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:11:37,408 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:37,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash -46897508, now seen corresponding path program 6 times [2024-06-04 15:11:37,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:37,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379118699] [2024-06-04 15:11:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:37,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:38,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379118699] [2024-06-04 15:11:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379118699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:38,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:38,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:38,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591870622] [2024-06-04 15:11:38,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:38,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:38,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:38,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 546 transitions, 6297 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:38,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:38,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:38,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:39,857 INFO L124 PetriNetUnfolderBase]: 3058/4922 cut-off events. [2024-06-04 15:11:39,858 INFO L125 PetriNetUnfolderBase]: For 1011435/1011437 co-relation queries the response was YES. [2024-06-04 15:11:39,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53143 conditions, 4922 events. 3058/4922 cut-off events. For 1011435/1011437 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29398 event pairs, 638 based on Foata normal form. 4/4925 useless extension candidates. Maximal degree in co-relation 52974. Up to 4241 conditions per place. [2024-06-04 15:11:39,927 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 439 selfloop transitions, 125 changer transitions 0/569 dead transitions. [2024-06-04 15:11:39,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 569 transitions, 7522 flow [2024-06-04 15:11:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:11:39,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:11:39,929 INFO L175 Difference]: Start difference. First operand has 368 places, 546 transitions, 6297 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:11:39,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 569 transitions, 7522 flow [2024-06-04 15:11:42,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 569 transitions, 7206 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-06-04 15:11:42,518 INFO L231 Difference]: Finished difference. Result has 370 places, 546 transitions, 6239 flow [2024-06-04 15:11:42,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5981, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6239, PETRI_PLACES=370, PETRI_TRANSITIONS=546} [2024-06-04 15:11:42,518 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 326 predicate places. [2024-06-04 15:11:42,518 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 546 transitions, 6239 flow [2024-06-04 15:11:42,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:42,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:42,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:42,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:11:42,519 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:42,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:42,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1156443996, now seen corresponding path program 7 times [2024-06-04 15:11:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:42,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430786608] [2024-06-04 15:11:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:42,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:43,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:43,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430786608] [2024-06-04 15:11:43,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430786608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:43,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:43,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979425729] [2024-06-04 15:11:43,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:43,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:43,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:43,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:43,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:43,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 546 transitions, 6239 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:43,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:43,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:43,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:44,923 INFO L124 PetriNetUnfolderBase]: 3073/4944 cut-off events. [2024-06-04 15:11:44,923 INFO L125 PetriNetUnfolderBase]: For 1027934/1027934 co-relation queries the response was YES. [2024-06-04 15:11:44,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53549 conditions, 4944 events. 3073/4944 cut-off events. For 1027934/1027934 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 29536 event pairs, 616 based on Foata normal form. 2/4945 useless extension candidates. Maximal degree in co-relation 53379. Up to 4495 conditions per place. [2024-06-04 15:11:45,006 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 491 selfloop transitions, 73 changer transitions 0/569 dead transitions. [2024-06-04 15:11:45,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 569 transitions, 7614 flow [2024-06-04 15:11:45,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-04 15:11:45,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082687338501292 [2024-06-04 15:11:45,008 INFO L175 Difference]: Start difference. First operand has 370 places, 546 transitions, 6239 flow. Second operand 9 states and 158 transitions. [2024-06-04 15:11:45,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 569 transitions, 7614 flow [2024-06-04 15:11:47,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 569 transitions, 7349 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:11:47,170 INFO L231 Difference]: Finished difference. Result has 371 places, 552 transitions, 6319 flow [2024-06-04 15:11:47,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5974, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6319, PETRI_PLACES=371, PETRI_TRANSITIONS=552} [2024-06-04 15:11:47,171 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 327 predicate places. [2024-06-04 15:11:47,171 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 552 transitions, 6319 flow [2024-06-04 15:11:47,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:47,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:47,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:47,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:11:47,172 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:47,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1156563966, now seen corresponding path program 8 times [2024-06-04 15:11:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:47,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944166912] [2024-06-04 15:11:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:48,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:48,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944166912] [2024-06-04 15:11:48,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944166912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:48,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:48,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:48,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119024150] [2024-06-04 15:11:48,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:48,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:48,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:48,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:48,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 552 transitions, 6319 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:48,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:48,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:48,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:49,401 INFO L124 PetriNetUnfolderBase]: 3115/5013 cut-off events. [2024-06-04 15:11:49,401 INFO L125 PetriNetUnfolderBase]: For 1084619/1084621 co-relation queries the response was YES. [2024-06-04 15:11:49,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55391 conditions, 5013 events. 3115/5013 cut-off events. For 1084619/1084621 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 30023 event pairs, 652 based on Foata normal form. 4/5016 useless extension candidates. Maximal degree in co-relation 55220. Up to 4032 conditions per place. [2024-06-04 15:11:49,479 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 372 selfloop transitions, 206 changer transitions 0/583 dead transitions. [2024-06-04 15:11:49,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 583 transitions, 8497 flow [2024-06-04 15:11:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 15:11:49,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-04 15:11:49,481 INFO L175 Difference]: Start difference. First operand has 371 places, 552 transitions, 6319 flow. Second operand 9 states and 168 transitions. [2024-06-04 15:11:49,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 583 transitions, 8497 flow [2024-06-04 15:11:52,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 583 transitions, 8154 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-06-04 15:11:52,227 INFO L231 Difference]: Finished difference. Result has 373 places, 561 transitions, 6886 flow [2024-06-04 15:11:52,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5976, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6886, PETRI_PLACES=373, PETRI_TRANSITIONS=561} [2024-06-04 15:11:52,228 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 329 predicate places. [2024-06-04 15:11:52,228 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 561 transitions, 6886 flow [2024-06-04 15:11:52,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:52,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:52,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:52,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:11:52,229 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:52,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:52,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1149201156, now seen corresponding path program 9 times [2024-06-04 15:11:52,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:52,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304138741] [2024-06-04 15:11:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:52,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:53,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:53,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304138741] [2024-06-04 15:11:53,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304138741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:53,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:53,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:53,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397179311] [2024-06-04 15:11:53,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:53,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:53,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:53,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:53,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:53,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:53,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 561 transitions, 6886 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:53,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:53,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:53,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:54,515 INFO L124 PetriNetUnfolderBase]: 3157/5079 cut-off events. [2024-06-04 15:11:54,516 INFO L125 PetriNetUnfolderBase]: For 1144482/1144484 co-relation queries the response was YES. [2024-06-04 15:11:54,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57654 conditions, 5079 events. 3157/5079 cut-off events. For 1144482/1144484 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 30514 event pairs, 634 based on Foata normal form. 4/5082 useless extension candidates. Maximal degree in co-relation 57483. Up to 4072 conditions per place. [2024-06-04 15:11:54,595 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 395 selfloop transitions, 193 changer transitions 0/593 dead transitions. [2024-06-04 15:11:54,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 593 transitions, 9334 flow [2024-06-04 15:11:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-04 15:11:54,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392764857881137 [2024-06-04 15:11:54,596 INFO L175 Difference]: Start difference. First operand has 373 places, 561 transitions, 6886 flow. Second operand 9 states and 170 transitions. [2024-06-04 15:11:54,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 593 transitions, 9334 flow [2024-06-04 15:11:56,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 593 transitions, 8872 flow, removed 141 selfloop flow, removed 4 redundant places. [2024-06-04 15:11:56,963 INFO L231 Difference]: Finished difference. Result has 378 places, 570 transitions, 7320 flow [2024-06-04 15:11:56,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6484, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7320, PETRI_PLACES=378, PETRI_TRANSITIONS=570} [2024-06-04 15:11:56,964 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 334 predicate places. [2024-06-04 15:11:56,964 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 570 transitions, 7320 flow [2024-06-04 15:11:56,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:56,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:11:56,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:11:56,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:11:56,965 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:11:56,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:11:56,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1156831279, now seen corresponding path program 2 times [2024-06-04 15:11:56,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:11:56,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341299330] [2024-06-04 15:11:56,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:11:56,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:11:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:11:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:11:57,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:11:57,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341299330] [2024-06-04 15:11:57,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341299330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:11:57,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:11:57,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:11:57,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918920079] [2024-06-04 15:11:57,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:11:57,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:11:57,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:11:57,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:11:57,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:11:58,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:11:58,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 570 transitions, 7320 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:11:58,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:11:58,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:11:58,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:11:59,164 INFO L124 PetriNetUnfolderBase]: 3183/5113 cut-off events. [2024-06-04 15:11:59,165 INFO L125 PetriNetUnfolderBase]: For 1152615/1152619 co-relation queries the response was YES. [2024-06-04 15:11:59,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57767 conditions, 5113 events. 3183/5113 cut-off events. For 1152615/1152619 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 30704 event pairs, 626 based on Foata normal form. 6/5118 useless extension candidates. Maximal degree in co-relation 57594. Up to 4532 conditions per place. [2024-06-04 15:11:59,246 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 497 selfloop transitions, 97 changer transitions 0/599 dead transitions. [2024-06-04 15:11:59,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 599 transitions, 9063 flow [2024-06-04 15:11:59,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:11:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:11:59,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 15:11:59,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42377260981912146 [2024-06-04 15:11:59,247 INFO L175 Difference]: Start difference. First operand has 378 places, 570 transitions, 7320 flow. Second operand 9 states and 164 transitions. [2024-06-04 15:11:59,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 599 transitions, 9063 flow [2024-06-04 15:12:02,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 599 transitions, 8677 flow, removed 87 selfloop flow, removed 4 redundant places. [2024-06-04 15:12:02,382 INFO L231 Difference]: Finished difference. Result has 384 places, 578 transitions, 7400 flow [2024-06-04 15:12:02,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6934, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7400, PETRI_PLACES=384, PETRI_TRANSITIONS=578} [2024-06-04 15:12:02,382 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 340 predicate places. [2024-06-04 15:12:02,382 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 578 transitions, 7400 flow [2024-06-04 15:12:02,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:02,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:02,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:02,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:12:02,383 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:12:02,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1156564369, now seen corresponding path program 3 times [2024-06-04 15:12:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:02,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840360378] [2024-06-04 15:12:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:02,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:03,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:03,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840360378] [2024-06-04 15:12:03,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840360378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:03,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:03,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924506288] [2024-06-04 15:12:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:03,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:03,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:03,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:03,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:03,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 578 transitions, 7400 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:03,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:03,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:03,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:04,636 INFO L124 PetriNetUnfolderBase]: 3193/5129 cut-off events. [2024-06-04 15:12:04,637 INFO L125 PetriNetUnfolderBase]: For 1173804/1173808 co-relation queries the response was YES. [2024-06-04 15:12:04,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58021 conditions, 5129 events. 3193/5129 cut-off events. For 1173804/1173808 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 30873 event pairs, 668 based on Foata normal form. 6/5134 useless extension candidates. Maximal degree in co-relation 57846. Up to 4542 conditions per place. [2024-06-04 15:12:04,717 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 502 selfloop transitions, 95 changer transitions 0/602 dead transitions. [2024-06-04 15:12:04,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 602 transitions, 9033 flow [2024-06-04 15:12:04,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:12:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:12:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-04 15:12:04,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-04 15:12:04,718 INFO L175 Difference]: Start difference. First operand has 384 places, 578 transitions, 7400 flow. Second operand 9 states and 165 transitions. [2024-06-04 15:12:04,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 602 transitions, 9033 flow [2024-06-04 15:12:07,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 602 transitions, 8758 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-06-04 15:12:07,650 INFO L231 Difference]: Finished difference. Result has 388 places, 581 transitions, 7444 flow [2024-06-04 15:12:07,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7153, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7444, PETRI_PLACES=388, PETRI_TRANSITIONS=581} [2024-06-04 15:12:07,650 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 344 predicate places. [2024-06-04 15:12:07,651 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 581 transitions, 7444 flow [2024-06-04 15:12:07,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:07,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:07,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:07,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:12:07,651 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:12:07,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 181696636, now seen corresponding path program 10 times [2024-06-04 15:12:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:07,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956083137] [2024-06-04 15:12:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:07,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:08,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:08,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956083137] [2024-06-04 15:12:08,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956083137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:08,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:08,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:08,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419588532] [2024-06-04 15:12:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:08,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:08,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:08,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:08,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 581 transitions, 7444 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:08,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:08,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:08,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:10,179 INFO L124 PetriNetUnfolderBase]: 3187/5116 cut-off events. [2024-06-04 15:12:10,179 INFO L125 PetriNetUnfolderBase]: For 1174015/1174015 co-relation queries the response was YES. [2024-06-04 15:12:10,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57816 conditions, 5116 events. 3187/5116 cut-off events. For 1174015/1174015 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 30627 event pairs, 673 based on Foata normal form. 2/5117 useless extension candidates. Maximal degree in co-relation 57639. Up to 4630 conditions per place. [2024-06-04 15:12:10,261 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 522 selfloop transitions, 76 changer transitions 0/603 dead transitions. [2024-06-04 15:12:10,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 603 transitions, 8954 flow [2024-06-04 15:12:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:12:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:12:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-04 15:12:10,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40380549682875266 [2024-06-04 15:12:10,263 INFO L175 Difference]: Start difference. First operand has 388 places, 581 transitions, 7444 flow. Second operand 11 states and 191 transitions. [2024-06-04 15:12:10,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 603 transitions, 8954 flow [2024-06-04 15:12:13,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 603 transitions, 8614 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-06-04 15:12:13,526 INFO L231 Difference]: Finished difference. Result has 393 places, 581 transitions, 7262 flow [2024-06-04 15:12:13,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7104, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7262, PETRI_PLACES=393, PETRI_TRANSITIONS=581} [2024-06-04 15:12:13,527 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 349 predicate places. [2024-06-04 15:12:13,528 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 581 transitions, 7262 flow [2024-06-04 15:12:13,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:13,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:13,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:13,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:12:13,528 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 15:12:13,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:13,529 INFO L85 PathProgramCache]: Analyzing trace with hash 181459486, now seen corresponding path program 11 times [2024-06-04 15:12:13,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:13,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113472769] [2024-06-04 15:12:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:13,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113472769] [2024-06-04 15:12:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113472769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:14,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:14,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:14,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638904149] [2024-06-04 15:12:14,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:14,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:14,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:14,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:14,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:14,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:14,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 581 transitions, 7262 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:14,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:14,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:14,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:15,875 INFO L124 PetriNetUnfolderBase]: 3181/5108 cut-off events. [2024-06-04 15:12:15,876 INFO L125 PetriNetUnfolderBase]: For 1174434/1174434 co-relation queries the response was YES. [2024-06-04 15:12:15,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57316 conditions, 5108 events. 3181/5108 cut-off events. For 1174434/1174434 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 30588 event pairs, 673 based on Foata normal form. 2/5109 useless extension candidates. Maximal degree in co-relation 57138. Up to 4625 conditions per place. [2024-06-04 15:12:15,963 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 519 selfloop transitions, 75 changer transitions 0/599 dead transitions. [2024-06-04 15:12:15,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 599 transitions, 8518 flow [2024-06-04 15:12:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:12:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:12:15,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-04 15:12:15,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160206718346253 [2024-06-04 15:12:15,965 INFO L175 Difference]: Start difference. First operand has 393 places, 581 transitions, 7262 flow. Second operand 9 states and 161 transitions. [2024-06-04 15:12:15,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 599 transitions, 8518 flow [2024-06-04 15:12:19,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 599 transitions, 8123 flow, removed 74 selfloop flow, removed 10 redundant places. [2024-06-04 15:12:19,057 INFO L231 Difference]: Finished difference. Result has 392 places, 581 transitions, 7023 flow [2024-06-04 15:12:19,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6867, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7023, PETRI_PLACES=392, PETRI_TRANSITIONS=581} [2024-06-04 15:12:19,057 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 348 predicate places. [2024-06-04 15:12:19,058 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 581 transitions, 7023 flow [2024-06-04 15:12:19,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:19,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:19,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:19,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:12:19,058 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 15:12:19,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash 96993425, now seen corresponding path program 4 times [2024-06-04 15:12:19,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:19,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510653134] [2024-06-04 15:12:19,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:19,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:20,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:20,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510653134] [2024-06-04 15:12:20,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510653134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:20,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:20,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:20,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867331240] [2024-06-04 15:12:20,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:20,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:20,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:20,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:20,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:20,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 581 transitions, 7023 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:20,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:20,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:20,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:21,466 INFO L124 PetriNetUnfolderBase]: 3191/5129 cut-off events. [2024-06-04 15:12:21,467 INFO L125 PetriNetUnfolderBase]: For 1190790/1190794 co-relation queries the response was YES. [2024-06-04 15:12:21,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57288 conditions, 5129 events. 3191/5129 cut-off events. For 1190790/1190794 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 30853 event pairs, 681 based on Foata normal form. 6/5134 useless extension candidates. Maximal degree in co-relation 57111. Up to 4536 conditions per place. [2024-06-04 15:12:21,542 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 508 selfloop transitions, 92 changer transitions 0/605 dead transitions. [2024-06-04 15:12:21,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 605 transitions, 8643 flow [2024-06-04 15:12:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:12:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:12:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:12:21,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:12:21,544 INFO L175 Difference]: Start difference. First operand has 392 places, 581 transitions, 7023 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:12:21,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 605 transitions, 8643 flow [2024-06-04 15:12:24,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 605 transitions, 8493 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 15:12:24,450 INFO L231 Difference]: Finished difference. Result has 393 places, 584 transitions, 7161 flow [2024-06-04 15:12:24,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6873, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7161, PETRI_PLACES=393, PETRI_TRANSITIONS=584} [2024-06-04 15:12:24,450 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 349 predicate places. [2024-06-04 15:12:24,450 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 584 transitions, 7161 flow [2024-06-04 15:12:24,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:24,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:24,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:24,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:12:24,451 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 15:12:24,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:24,451 INFO L85 PathProgramCache]: Analyzing trace with hash 185189716, now seen corresponding path program 12 times [2024-06-04 15:12:24,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:24,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839917645] [2024-06-04 15:12:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:24,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:25,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:25,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839917645] [2024-06-04 15:12:25,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839917645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:25,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:25,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433239390] [2024-06-04 15:12:25,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:25,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:25,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:25,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:25,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 584 transitions, 7161 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:25,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:25,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:25,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:26,968 INFO L124 PetriNetUnfolderBase]: 3185/5127 cut-off events. [2024-06-04 15:12:26,968 INFO L125 PetriNetUnfolderBase]: For 1194368/1194370 co-relation queries the response was YES. [2024-06-04 15:12:27,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57194 conditions, 5127 events. 3185/5127 cut-off events. For 1194368/1194370 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 30916 event pairs, 673 based on Foata normal form. 4/5130 useless extension candidates. Maximal degree in co-relation 57016. Up to 4121 conditions per place. [2024-06-04 15:12:27,040 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 401 selfloop transitions, 199 changer transitions 0/605 dead transitions. [2024-06-04 15:12:27,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 605 transitions, 8685 flow [2024-06-04 15:12:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:12:27,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:12:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-04 15:12:27,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-04 15:12:27,041 INFO L175 Difference]: Start difference. First operand has 393 places, 584 transitions, 7161 flow. Second operand 9 states and 168 transitions. [2024-06-04 15:12:27,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 605 transitions, 8685 flow [2024-06-04 15:12:30,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 605 transitions, 8358 flow, removed 96 selfloop flow, removed 6 redundant places. [2024-06-04 15:12:30,291 INFO L231 Difference]: Finished difference. Result has 396 places, 584 transitions, 7238 flow [2024-06-04 15:12:30,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6834, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7238, PETRI_PLACES=396, PETRI_TRANSITIONS=584} [2024-06-04 15:12:30,291 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 352 predicate places. [2024-06-04 15:12:30,291 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 584 transitions, 7238 flow [2024-06-04 15:12:30,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:30,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:30,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:30,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:12:30,292 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 15:12:30,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash -387902688, now seen corresponding path program 1 times [2024-06-04 15:12:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:30,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899036246] [2024-06-04 15:12:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:31,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:31,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899036246] [2024-06-04 15:12:31,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899036246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:31,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303855029] [2024-06-04 15:12:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:31,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:31,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:31,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:31,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 584 transitions, 7238 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:31,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:31,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:31,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:32,709 INFO L124 PetriNetUnfolderBase]: 3193/5129 cut-off events. [2024-06-04 15:12:32,710 INFO L125 PetriNetUnfolderBase]: For 1211192/1211194 co-relation queries the response was YES. [2024-06-04 15:12:32,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57563 conditions, 5129 events. 3193/5129 cut-off events. For 1211192/1211194 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 30748 event pairs, 539 based on Foata normal form. 4/5132 useless extension candidates. Maximal degree in co-relation 57384. Up to 4662 conditions per place. [2024-06-04 15:12:32,782 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 567 selfloop transitions, 41 changer transitions 0/613 dead transitions. [2024-06-04 15:12:32,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 613 transitions, 8616 flow [2024-06-04 15:12:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:12:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:12:32,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-04 15:12:32,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-04 15:12:32,784 INFO L175 Difference]: Start difference. First operand has 396 places, 584 transitions, 7238 flow. Second operand 9 states and 163 transitions. [2024-06-04 15:12:32,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 613 transitions, 8616 flow [2024-06-04 15:12:36,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 613 transitions, 8309 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 15:12:36,521 INFO L231 Difference]: Finished difference. Result has 398 places, 586 transitions, 7092 flow [2024-06-04 15:12:36,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6931, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7092, PETRI_PLACES=398, PETRI_TRANSITIONS=586} [2024-06-04 15:12:36,521 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 354 predicate places. [2024-06-04 15:12:36,522 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 586 transitions, 7092 flow [2024-06-04 15:12:36,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:36,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:36,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:36,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:12:36,522 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 15:12:36,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1668079628, now seen corresponding path program 2 times [2024-06-04 15:12:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:36,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467512469] [2024-06-04 15:12:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:36,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:37,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:37,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467512469] [2024-06-04 15:12:37,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467512469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:37,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:37,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691098967] [2024-06-04 15:12:37,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:37,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:37,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:37,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:37,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:37,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 586 transitions, 7092 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:37,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:37,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:37,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:38,964 INFO L124 PetriNetUnfolderBase]: 3214/5160 cut-off events. [2024-06-04 15:12:38,964 INFO L125 PetriNetUnfolderBase]: For 1243567/1243569 co-relation queries the response was YES. [2024-06-04 15:12:39,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58061 conditions, 5160 events. 3214/5160 cut-off events. For 1243567/1243569 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 31018 event pairs, 679 based on Foata normal form. 4/5163 useless extension candidates. Maximal degree in co-relation 57881. Up to 4696 conditions per place. [2024-06-04 15:12:39,040 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 553 selfloop transitions, 56 changer transitions 0/614 dead transitions. [2024-06-04 15:12:39,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 614 transitions, 8778 flow [2024-06-04 15:12:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:12:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:12:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-04 15:12:39,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-04 15:12:39,042 INFO L175 Difference]: Start difference. First operand has 398 places, 586 transitions, 7092 flow. Second operand 9 states and 163 transitions. [2024-06-04 15:12:39,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 614 transitions, 8778 flow [2024-06-04 15:12:42,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 614 transitions, 8633 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-04 15:12:42,792 INFO L231 Difference]: Finished difference. Result has 400 places, 590 transitions, 7216 flow [2024-06-04 15:12:42,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6947, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7216, PETRI_PLACES=400, PETRI_TRANSITIONS=590} [2024-06-04 15:12:42,792 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 356 predicate places. [2024-06-04 15:12:42,793 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 590 transitions, 7216 flow [2024-06-04 15:12:42,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:42,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:42,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:42,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:12:42,793 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:12:42,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:42,794 INFO L85 PathProgramCache]: Analyzing trace with hash 583538522, now seen corresponding path program 3 times [2024-06-04 15:12:42,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:42,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696524132] [2024-06-04 15:12:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:42,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:43,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:43,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696524132] [2024-06-04 15:12:43,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696524132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:43,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:43,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:43,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55708938] [2024-06-04 15:12:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:43,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:43,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:43,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:43,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 590 transitions, 7216 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:43,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:43,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:43,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:45,347 INFO L124 PetriNetUnfolderBase]: 3209/5153 cut-off events. [2024-06-04 15:12:45,347 INFO L125 PetriNetUnfolderBase]: For 1249418/1249420 co-relation queries the response was YES. [2024-06-04 15:12:45,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57899 conditions, 5153 events. 3209/5153 cut-off events. For 1249418/1249420 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 30978 event pairs, 680 based on Foata normal form. 4/5156 useless extension candidates. Maximal degree in co-relation 57718. Up to 4716 conditions per place. [2024-06-04 15:12:45,419 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 549 selfloop transitions, 58 changer transitions 0/612 dead transitions. [2024-06-04 15:12:45,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 612 transitions, 8504 flow [2024-06-04 15:12:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:12:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:12:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-04 15:12:45,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134366925064599 [2024-06-04 15:12:45,421 INFO L175 Difference]: Start difference. First operand has 400 places, 590 transitions, 7216 flow. Second operand 9 states and 160 transitions. [2024-06-04 15:12:45,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 612 transitions, 8504 flow [2024-06-04 15:12:48,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 612 transitions, 8282 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-04 15:12:48,838 INFO L231 Difference]: Finished difference. Result has 404 places, 590 transitions, 7115 flow [2024-06-04 15:12:48,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6994, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7115, PETRI_PLACES=404, PETRI_TRANSITIONS=590} [2024-06-04 15:12:48,838 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 360 predicate places. [2024-06-04 15:12:48,838 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 590 transitions, 7115 flow [2024-06-04 15:12:48,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:48,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:48,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:48,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:12:48,839 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:12:48,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1156441020, now seen corresponding path program 4 times [2024-06-04 15:12:48,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:48,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002942928] [2024-06-04 15:12:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:48,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:49,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:49,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002942928] [2024-06-04 15:12:49,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002942928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:49,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:49,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:49,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578754355] [2024-06-04 15:12:49,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:49,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:49,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:49,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:49,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:50,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:50,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 590 transitions, 7115 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:50,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:50,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:50,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:51,420 INFO L124 PetriNetUnfolderBase]: 3217/5162 cut-off events. [2024-06-04 15:12:51,420 INFO L125 PetriNetUnfolderBase]: For 1265842/1265842 co-relation queries the response was YES. [2024-06-04 15:12:51,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58067 conditions, 5162 events. 3217/5162 cut-off events. For 1265842/1265842 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 30985 event pairs, 676 based on Foata normal form. 2/5163 useless extension candidates. Maximal degree in co-relation 57884. Up to 4699 conditions per place. [2024-06-04 15:12:51,493 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 532 selfloop transitions, 72 changer transitions 0/609 dead transitions. [2024-06-04 15:12:51,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 609 transitions, 8455 flow [2024-06-04 15:12:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:12:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:12:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-04 15:12:51,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40568475452196384 [2024-06-04 15:12:51,494 INFO L175 Difference]: Start difference. First operand has 404 places, 590 transitions, 7115 flow. Second operand 9 states and 157 transitions. [2024-06-04 15:12:51,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 609 transitions, 8455 flow [2024-06-04 15:12:55,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 609 transitions, 8290 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:12:55,328 INFO L231 Difference]: Finished difference. Result has 404 places, 592 transitions, 7181 flow [2024-06-04 15:12:55,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6950, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7181, PETRI_PLACES=404, PETRI_TRANSITIONS=592} [2024-06-04 15:12:55,328 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 360 predicate places. [2024-06-04 15:12:55,328 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 592 transitions, 7181 flow [2024-06-04 15:12:55,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:55,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:12:55,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:12:55,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:12:55,329 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:12:55,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:12:55,330 INFO L85 PathProgramCache]: Analyzing trace with hash 181693660, now seen corresponding path program 5 times [2024-06-04 15:12:55,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:12:55,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503485253] [2024-06-04 15:12:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:12:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:12:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:12:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:12:56,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:12:56,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503485253] [2024-06-04 15:12:56,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503485253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:12:56,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:12:56,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:12:56,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323514662] [2024-06-04 15:12:56,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:12:56,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:12:56,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:12:56,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:12:56,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:12:56,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:12:56,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 592 transitions, 7181 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:12:56,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:12:56,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:12:56,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:12:57,888 INFO L124 PetriNetUnfolderBase]: 3225/5174 cut-off events. [2024-06-04 15:12:57,889 INFO L125 PetriNetUnfolderBase]: For 1284848/1284848 co-relation queries the response was YES. [2024-06-04 15:12:57,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58458 conditions, 5174 events. 3225/5174 cut-off events. For 1284848/1284848 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 31047 event pairs, 678 based on Foata normal form. 2/5175 useless extension candidates. Maximal degree in co-relation 58274. Up to 4711 conditions per place. [2024-06-04 15:12:57,966 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 540 selfloop transitions, 66 changer transitions 0/611 dead transitions. [2024-06-04 15:12:57,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 611 transitions, 8529 flow [2024-06-04 15:12:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:12:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:12:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-04 15:12:57,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082687338501292 [2024-06-04 15:12:57,968 INFO L175 Difference]: Start difference. First operand has 404 places, 592 transitions, 7181 flow. Second operand 9 states and 158 transitions. [2024-06-04 15:12:57,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 611 transitions, 8529 flow [2024-06-04 15:13:02,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 611 transitions, 8314 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-04 15:13:02,458 INFO L231 Difference]: Finished difference. Result has 406 places, 594 transitions, 7189 flow [2024-06-04 15:13:02,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6966, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7189, PETRI_PLACES=406, PETRI_TRANSITIONS=594} [2024-06-04 15:13:02,459 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 362 predicate places. [2024-06-04 15:13:02,459 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 594 transitions, 7189 flow [2024-06-04 15:13:02,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:02,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:13:02,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:13:02,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:13:02,459 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:13:02,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:13:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1145389830, now seen corresponding path program 6 times [2024-06-04 15:13:02,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:13:02,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313106208] [2024-06-04 15:13:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:13:02,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:13:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:13:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:13:03,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:13:03,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313106208] [2024-06-04 15:13:03,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313106208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:13:03,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:13:03,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:13:03,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602593339] [2024-06-04 15:13:03,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:13:03,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:13:03,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:13:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:13:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:13:03,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:13:03,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 594 transitions, 7189 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:03,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:13:03,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:13:03,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:13:04,995 INFO L124 PetriNetUnfolderBase]: 3233/5186 cut-off events. [2024-06-04 15:13:04,995 INFO L125 PetriNetUnfolderBase]: For 1303086/1303086 co-relation queries the response was YES. [2024-06-04 15:13:05,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58756 conditions, 5186 events. 3233/5186 cut-off events. For 1303086/1303086 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 31140 event pairs, 676 based on Foata normal form. 2/5187 useless extension candidates. Maximal degree in co-relation 58571. Up to 4703 conditions per place. [2024-06-04 15:13:05,069 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 538 selfloop transitions, 71 changer transitions 0/614 dead transitions. [2024-06-04 15:13:05,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 614 transitions, 8549 flow [2024-06-04 15:13:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:13:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:13:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-04 15:13:05,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108527131782946 [2024-06-04 15:13:05,070 INFO L175 Difference]: Start difference. First operand has 406 places, 594 transitions, 7189 flow. Second operand 9 states and 159 transitions. [2024-06-04 15:13:05,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 614 transitions, 8549 flow [2024-06-04 15:13:08,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 614 transitions, 8375 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-04 15:13:08,669 INFO L231 Difference]: Finished difference. Result has 409 places, 596 transitions, 7252 flow [2024-06-04 15:13:08,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7015, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7252, PETRI_PLACES=409, PETRI_TRANSITIONS=596} [2024-06-04 15:13:08,669 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 365 predicate places. [2024-06-04 15:13:08,670 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 596 transitions, 7252 flow [2024-06-04 15:13:08,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:08,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:13:08,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:13:08,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:13:08,670 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:13:08,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:13:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1156841199, now seen corresponding path program 1 times [2024-06-04 15:13:08,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:13:08,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463250441] [2024-06-04 15:13:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:13:08,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:13:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:13:10,027 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 15:13:10,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:13:10,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463250441] [2024-06-04 15:13:10,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463250441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:13:10,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:13:10,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:13:10,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943478593] [2024-06-04 15:13:10,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:13:10,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:13:10,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:13:10,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:13:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:13:10,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:13:10,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 596 transitions, 7252 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:10,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:13:10,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:13:10,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:13:11,455 INFO L124 PetriNetUnfolderBase]: 3013/4898 cut-off events. [2024-06-04 15:13:11,456 INFO L125 PetriNetUnfolderBase]: For 1321873/1321913 co-relation queries the response was YES. [2024-06-04 15:13:11,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57057 conditions, 4898 events. 3013/4898 cut-off events. For 1321873/1321913 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 29907 event pairs, 627 based on Foata normal form. 5/4848 useless extension candidates. Maximal degree in co-relation 56871. Up to 4226 conditions per place. [2024-06-04 15:13:11,528 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 468 selfloop transitions, 80 changer transitions 0/616 dead transitions. [2024-06-04 15:13:11,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 616 transitions, 8510 flow [2024-06-04 15:13:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:13:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:13:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-04 15:13:11,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116279069767442 [2024-06-04 15:13:11,529 INFO L175 Difference]: Start difference. First operand has 409 places, 596 transitions, 7252 flow. Second operand 10 states and 177 transitions. [2024-06-04 15:13:11,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 616 transitions, 8510 flow [2024-06-04 15:13:14,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 616 transitions, 8289 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-04 15:13:14,804 INFO L231 Difference]: Finished difference. Result has 412 places, 599 transitions, 7311 flow [2024-06-04 15:13:14,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7031, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7311, PETRI_PLACES=412, PETRI_TRANSITIONS=599} [2024-06-04 15:13:14,805 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 368 predicate places. [2024-06-04 15:13:14,805 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 599 transitions, 7311 flow [2024-06-04 15:13:14,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:14,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:13:14,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:13:14,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:13:14,807 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:13:14,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:13:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash 250847958, now seen corresponding path program 5 times [2024-06-04 15:13:14,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:13:14,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845499570] [2024-06-04 15:13:14,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:13:14,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:13:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:13:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:13:16,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:13:16,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845499570] [2024-06-04 15:13:16,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845499570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:13:16,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:13:16,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:13:16,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634081049] [2024-06-04 15:13:16,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:13:16,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:13:16,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:13:16,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:13:16,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:13:16,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:13:16,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 599 transitions, 7311 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:16,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:13:16,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:13:16,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:13:17,657 INFO L124 PetriNetUnfolderBase]: 3148/5108 cut-off events. [2024-06-04 15:13:17,657 INFO L125 PetriNetUnfolderBase]: For 1337433/1337433 co-relation queries the response was YES. [2024-06-04 15:13:17,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59055 conditions, 5108 events. 3148/5108 cut-off events. For 1337433/1337433 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 31216 event pairs, 643 based on Foata normal form. 1/5092 useless extension candidates. Maximal degree in co-relation 58868. Up to 4232 conditions per place. [2024-06-04 15:13:17,733 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 463 selfloop transitions, 109 changer transitions 0/625 dead transitions. [2024-06-04 15:13:17,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 625 transitions, 8737 flow [2024-06-04 15:13:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:13:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:13:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-04 15:13:17,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-04 15:13:17,735 INFO L175 Difference]: Start difference. First operand has 412 places, 599 transitions, 7311 flow. Second operand 9 states and 174 transitions. [2024-06-04 15:13:17,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 625 transitions, 8737 flow [2024-06-04 15:13:21,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 625 transitions, 8479 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-04 15:13:21,831 INFO L231 Difference]: Finished difference. Result has 413 places, 602 transitions, 7477 flow [2024-06-04 15:13:21,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7053, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7477, PETRI_PLACES=413, PETRI_TRANSITIONS=602} [2024-06-04 15:13:21,831 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 369 predicate places. [2024-06-04 15:13:21,832 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 602 transitions, 7477 flow [2024-06-04 15:13:21,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:21,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:13:21,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:13:21,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:13:21,832 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:13:21,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:13:21,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1129651918, now seen corresponding path program 2 times [2024-06-04 15:13:21,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:13:21,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68798458] [2024-06-04 15:13:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:13:21,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:13:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:13:22,915 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 15:13:22,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:13:22,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68798458] [2024-06-04 15:13:22,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68798458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:13:22,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:13:22,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:13:22,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580062554] [2024-06-04 15:13:22,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:13:22,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:13:22,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:13:22,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:13:22,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:13:23,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:13:23,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 602 transitions, 7477 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:23,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:13:23,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:13:23,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:13:24,461 INFO L124 PetriNetUnfolderBase]: 3253/5222 cut-off events. [2024-06-04 15:13:24,461 INFO L125 PetriNetUnfolderBase]: For 1362567/1362571 co-relation queries the response was YES. [2024-06-04 15:13:24,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60351 conditions, 5222 events. 3253/5222 cut-off events. For 1362567/1362571 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 31486 event pairs, 689 based on Foata normal form. 5/5226 useless extension candidates. Maximal degree in co-relation 60163. Up to 4752 conditions per place. [2024-06-04 15:13:24,551 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 565 selfloop transitions, 55 changer transitions 0/625 dead transitions. [2024-06-04 15:13:24,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 625 transitions, 8941 flow [2024-06-04 15:13:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:13:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:13:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-04 15:13:24,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134366925064599 [2024-06-04 15:13:24,552 INFO L175 Difference]: Start difference. First operand has 413 places, 602 transitions, 7477 flow. Second operand 9 states and 160 transitions. [2024-06-04 15:13:24,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 625 transitions, 8941 flow [2024-06-04 15:13:29,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 625 transitions, 8537 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-06-04 15:13:29,128 INFO L231 Difference]: Finished difference. Result has 415 places, 605 transitions, 7345 flow [2024-06-04 15:13:29,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7073, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7345, PETRI_PLACES=415, PETRI_TRANSITIONS=605} [2024-06-04 15:13:29,129 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 371 predicate places. [2024-06-04 15:13:29,129 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 605 transitions, 7345 flow [2024-06-04 15:13:29,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:29,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:13:29,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:13:29,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:13:29,130 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:13:29,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:13:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1129651546, now seen corresponding path program 6 times [2024-06-04 15:13:29,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:13:29,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399248324] [2024-06-04 15:13:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:13:29,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:13:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:13:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:13:30,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:13:30,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399248324] [2024-06-04 15:13:30,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399248324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:13:30,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:13:30,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:13:30,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986148005] [2024-06-04 15:13:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:13:30,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:13:30,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:13:30,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:13:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:13:30,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:13:30,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 605 transitions, 7345 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:30,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:13:30,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:13:30,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:13:31,638 INFO L124 PetriNetUnfolderBase]: 3158/5120 cut-off events. [2024-06-04 15:13:31,638 INFO L125 PetriNetUnfolderBase]: For 1388429/1388429 co-relation queries the response was YES. [2024-06-04 15:13:31,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60076 conditions, 5120 events. 3158/5120 cut-off events. For 1388429/1388429 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 31284 event pairs, 643 based on Foata normal form. 1/5104 useless extension candidates. Maximal degree in co-relation 59887. Up to 4238 conditions per place. [2024-06-04 15:13:31,727 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 460 selfloop transitions, 114 changer transitions 0/628 dead transitions. [2024-06-04 15:13:31,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 628 transitions, 8769 flow [2024-06-04 15:13:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:13:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:13:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-04 15:13:31,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-04 15:13:31,729 INFO L175 Difference]: Start difference. First operand has 415 places, 605 transitions, 7345 flow. Second operand 9 states and 173 transitions. [2024-06-04 15:13:31,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 628 transitions, 8769 flow [2024-06-04 15:13:36,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 628 transitions, 8519 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-04 15:13:36,673 INFO L231 Difference]: Finished difference. Result has 417 places, 608 transitions, 7537 flow [2024-06-04 15:13:36,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7095, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7537, PETRI_PLACES=417, PETRI_TRANSITIONS=608} [2024-06-04 15:13:36,674 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 373 predicate places. [2024-06-04 15:13:36,674 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 608 transitions, 7537 flow [2024-06-04 15:13:36,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:36,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:13:36,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:13:36,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:13:36,675 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:13:36,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:13:36,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1640615338, now seen corresponding path program 7 times [2024-06-04 15:13:36,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:13:36,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526473879] [2024-06-04 15:13:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:13:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:13:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:13:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:13:37,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:13:37,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526473879] [2024-06-04 15:13:37,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526473879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:13:37,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:13:37,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:13:37,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142385212] [2024-06-04 15:13:37,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:13:37,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:13:37,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:13:37,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:13:37,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:13:37,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:13:37,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 608 transitions, 7537 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:37,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:13:37,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:13:37,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:13:39,037 INFO L124 PetriNetUnfolderBase]: 3174/5150 cut-off events. [2024-06-04 15:13:39,037 INFO L125 PetriNetUnfolderBase]: For 1418235/1418235 co-relation queries the response was YES. [2024-06-04 15:13:39,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60986 conditions, 5150 events. 3174/5150 cut-off events. For 1418235/1418235 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 31486 event pairs, 644 based on Foata normal form. 1/5134 useless extension candidates. Maximal degree in co-relation 60796. Up to 4263 conditions per place. [2024-06-04 15:13:39,122 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 484 selfloop transitions, 100 changer transitions 0/638 dead transitions. [2024-06-04 15:13:39,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 638 transitions, 9040 flow [2024-06-04 15:13:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:13:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:13:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-04 15:13:39,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-04 15:13:39,123 INFO L175 Difference]: Start difference. First operand has 417 places, 608 transitions, 7537 flow. Second operand 9 states and 176 transitions. [2024-06-04 15:13:39,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 638 transitions, 9040 flow [2024-06-04 15:13:43,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 638 transitions, 8614 flow, removed 98 selfloop flow, removed 7 redundant places. [2024-06-04 15:13:43,833 INFO L231 Difference]: Finished difference. Result has 419 places, 614 transitions, 7563 flow [2024-06-04 15:13:43,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7117, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7563, PETRI_PLACES=419, PETRI_TRANSITIONS=614} [2024-06-04 15:13:43,844 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 375 predicate places. [2024-06-04 15:13:43,845 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 614 transitions, 7563 flow [2024-06-04 15:13:43,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:43,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:13:43,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:13:43,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:13:43,845 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:13:43,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:13:43,846 INFO L85 PathProgramCache]: Analyzing trace with hash -174799086, now seen corresponding path program 8 times [2024-06-04 15:13:43,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:13:43,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871659336] [2024-06-04 15:13:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:13:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:13:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:13:44,915 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 15:13:44,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:13:44,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871659336] [2024-06-04 15:13:44,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871659336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:13:44,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:13:44,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:13:44,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445758543] [2024-06-04 15:13:44,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:13:44,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:13:44,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:13:44,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:13:44,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:13:45,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:13:45,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 614 transitions, 7563 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:45,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:13:45,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:13:45,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:13:46,363 INFO L124 PetriNetUnfolderBase]: 3187/5170 cut-off events. [2024-06-04 15:13:46,363 INFO L125 PetriNetUnfolderBase]: For 1458753/1458753 co-relation queries the response was YES. [2024-06-04 15:13:46,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61958 conditions, 5170 events. 3187/5170 cut-off events. For 1458753/1458753 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 31636 event pairs, 606 based on Foata normal form. 1/5154 useless extension candidates. Maximal degree in co-relation 61767. Up to 4271 conditions per place. [2024-06-04 15:13:46,451 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 480 selfloop transitions, 108 changer transitions 0/642 dead transitions. [2024-06-04 15:13:46,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 642 transitions, 9512 flow [2024-06-04 15:13:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:13:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:13:46,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 15:13:46,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-04 15:13:46,453 INFO L175 Difference]: Start difference. First operand has 419 places, 614 transitions, 7563 flow. Second operand 9 states and 175 transitions. [2024-06-04 15:13:46,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 642 transitions, 9512 flow [2024-06-04 15:13:50,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 642 transitions, 9116 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-06-04 15:13:50,751 INFO L231 Difference]: Finished difference. Result has 422 places, 620 transitions, 7823 flow [2024-06-04 15:13:50,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7167, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7823, PETRI_PLACES=422, PETRI_TRANSITIONS=620} [2024-06-04 15:13:50,752 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 378 predicate places. [2024-06-04 15:13:50,752 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 620 transitions, 7823 flow [2024-06-04 15:13:50,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:50,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:13:50,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:13:50,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:13:50,753 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:13:50,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:13:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1934305858, now seen corresponding path program 3 times [2024-06-04 15:13:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:13:50,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107643537] [2024-06-04 15:13:50,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:13:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:13:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:13:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:13:51,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:13:51,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107643537] [2024-06-04 15:13:51,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107643537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:13:51,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:13:51,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:13:51,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795885742] [2024-06-04 15:13:51,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:13:51,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:13:51,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:13:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:13:51,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:13:52,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:13:52,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 620 transitions, 7823 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:52,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:13:52,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:13:52,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:13:53,409 INFO L124 PetriNetUnfolderBase]: 3292/5284 cut-off events. [2024-06-04 15:13:53,409 INFO L125 PetriNetUnfolderBase]: For 1483640/1483644 co-relation queries the response was YES. [2024-06-04 15:13:53,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63070 conditions, 5284 events. 3292/5284 cut-off events. For 1483640/1483644 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 31965 event pairs, 690 based on Foata normal form. 5/5288 useless extension candidates. Maximal degree in co-relation 62878. Up to 4807 conditions per place. [2024-06-04 15:13:53,498 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 588 selfloop transitions, 51 changer transitions 0/644 dead transitions. [2024-06-04 15:13:53,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 644 transitions, 9344 flow [2024-06-04 15:13:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:13:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:13:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-04 15:13:53,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160206718346253 [2024-06-04 15:13:53,500 INFO L175 Difference]: Start difference. First operand has 422 places, 620 transitions, 7823 flow. Second operand 9 states and 161 transitions. [2024-06-04 15:13:53,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 644 transitions, 9344 flow [2024-06-04 15:13:57,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 644 transitions, 8990 flow, removed 121 selfloop flow, removed 5 redundant places. [2024-06-04 15:13:57,781 INFO L231 Difference]: Finished difference. Result has 426 places, 623 transitions, 7745 flow [2024-06-04 15:13:57,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7469, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7745, PETRI_PLACES=426, PETRI_TRANSITIONS=623} [2024-06-04 15:13:57,781 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 382 predicate places. [2024-06-04 15:13:57,782 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 623 transitions, 7745 flow [2024-06-04 15:13:57,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:57,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:13:57,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:13:57,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:13:57,782 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:13:57,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:13:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1325377888, now seen corresponding path program 9 times [2024-06-04 15:13:57,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:13:57,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812170778] [2024-06-04 15:13:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:13:57,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:13:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:13:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:13:58,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:13:58,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812170778] [2024-06-04 15:13:58,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812170778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:13:58,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:13:58,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:13:58,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052337604] [2024-06-04 15:13:58,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:13:58,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:13:58,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:13:58,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:13:58,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:13:59,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:13:59,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 623 transitions, 7745 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:13:59,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:13:59,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:13:59,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:14:00,345 INFO L124 PetriNetUnfolderBase]: 3197/5188 cut-off events. [2024-06-04 15:14:00,345 INFO L125 PetriNetUnfolderBase]: For 1509520/1509520 co-relation queries the response was YES. [2024-06-04 15:14:00,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63042 conditions, 5188 events. 3197/5188 cut-off events. For 1509520/1509520 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 31847 event pairs, 643 based on Foata normal form. 1/5172 useless extension candidates. Maximal degree in co-relation 62848. Up to 4234 conditions per place. [2024-06-04 15:14:00,439 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 429 selfloop transitions, 163 changer transitions 0/647 dead transitions. [2024-06-04 15:14:00,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 647 transitions, 9701 flow [2024-06-04 15:14:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:14:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:14:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-04 15:14:00,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-04 15:14:00,448 INFO L175 Difference]: Start difference. First operand has 426 places, 623 transitions, 7745 flow. Second operand 9 states and 171 transitions. [2024-06-04 15:14:00,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 647 transitions, 9701 flow [2024-06-04 15:14:05,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 647 transitions, 9447 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-04 15:14:05,028 INFO L231 Difference]: Finished difference. Result has 428 places, 629 transitions, 8273 flow [2024-06-04 15:14:05,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7491, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8273, PETRI_PLACES=428, PETRI_TRANSITIONS=629} [2024-06-04 15:14:05,029 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 384 predicate places. [2024-06-04 15:14:05,029 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 629 transitions, 8273 flow [2024-06-04 15:14:05,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:05,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:14:05,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:14:05,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:14:05,029 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:14:05,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:14:05,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1770311540, now seen corresponding path program 10 times [2024-06-04 15:14:05,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:14:05,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407912691] [2024-06-04 15:14:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:14:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:14:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:14:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:14:06,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:14:06,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407912691] [2024-06-04 15:14:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407912691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:14:06,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:14:06,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:14:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114837360] [2024-06-04 15:14:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:14:06,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:14:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:14:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:14:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:14:06,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:14:06,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 629 transitions, 8273 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:06,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:14:06,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:14:06,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:14:07,521 INFO L124 PetriNetUnfolderBase]: 3194/5184 cut-off events. [2024-06-04 15:14:07,522 INFO L125 PetriNetUnfolderBase]: For 1528377/1528377 co-relation queries the response was YES. [2024-06-04 15:14:07,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63504 conditions, 5184 events. 3194/5184 cut-off events. For 1528377/1528377 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 31791 event pairs, 644 based on Foata normal form. 1/5168 useless extension candidates. Maximal degree in co-relation 63309. Up to 4289 conditions per place. [2024-06-04 15:14:07,608 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 497 selfloop transitions, 101 changer transitions 0/653 dead transitions. [2024-06-04 15:14:07,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 653 transitions, 9564 flow [2024-06-04 15:14:07,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:14:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:14:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-04 15:14:07,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-04 15:14:07,609 INFO L175 Difference]: Start difference. First operand has 428 places, 629 transitions, 8273 flow. Second operand 9 states and 175 transitions. [2024-06-04 15:14:07,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 653 transitions, 9564 flow [2024-06-04 15:14:12,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 653 transitions, 9006 flow, removed 210 selfloop flow, removed 5 redundant places. [2024-06-04 15:14:12,344 INFO L231 Difference]: Finished difference. Result has 432 places, 629 transitions, 7923 flow [2024-06-04 15:14:12,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7715, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7923, PETRI_PLACES=432, PETRI_TRANSITIONS=629} [2024-06-04 15:14:12,344 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 388 predicate places. [2024-06-04 15:14:12,344 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 629 transitions, 7923 flow [2024-06-04 15:14:12,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:12,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:14:12,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:14:12,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:14:12,345 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:14:12,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:14:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash 605121600, now seen corresponding path program 4 times [2024-06-04 15:14:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:14:12,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092734057] [2024-06-04 15:14:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:14:12,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:14:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:14:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:14:13,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:14:13,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092734057] [2024-06-04 15:14:13,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092734057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:14:13,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:14:13,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:14:13,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078530594] [2024-06-04 15:14:13,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:14:13,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:14:13,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:14:13,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:14:13,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:14:13,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:14:13,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 629 transitions, 7923 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:13,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:14:13,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:14:13,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:14:15,052 INFO L124 PetriNetUnfolderBase]: 3307/5309 cut-off events. [2024-06-04 15:14:15,052 INFO L125 PetriNetUnfolderBase]: For 1541102/1541106 co-relation queries the response was YES. [2024-06-04 15:14:15,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64257 conditions, 5309 events. 3307/5309 cut-off events. For 1541102/1541106 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 32082 event pairs, 647 based on Foata normal form. 5/5313 useless extension candidates. Maximal degree in co-relation 64060. Up to 4793 conditions per place. [2024-06-04 15:14:15,140 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 570 selfloop transitions, 82 changer transitions 0/657 dead transitions. [2024-06-04 15:14:15,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 657 transitions, 10335 flow [2024-06-04 15:14:15,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:14:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:14:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-04 15:14:15,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-04 15:14:15,141 INFO L175 Difference]: Start difference. First operand has 432 places, 629 transitions, 7923 flow. Second operand 9 states and 162 transitions. [2024-06-04 15:14:15,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 657 transitions, 10335 flow [2024-06-04 15:14:20,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 657 transitions, 10095 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:14:20,218 INFO L231 Difference]: Finished difference. Result has 432 places, 638 transitions, 8363 flow [2024-06-04 15:14:20,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7683, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8363, PETRI_PLACES=432, PETRI_TRANSITIONS=638} [2024-06-04 15:14:20,219 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 388 predicate places. [2024-06-04 15:14:20,219 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 638 transitions, 8363 flow [2024-06-04 15:14:20,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:20,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:14:20,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:14:20,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:14:20,220 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:14:20,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:14:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1893848076, now seen corresponding path program 5 times [2024-06-04 15:14:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:14:20,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129715923] [2024-06-04 15:14:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:14:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:14:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:14:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:14:21,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:14:21,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129715923] [2024-06-04 15:14:21,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129715923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:14:21,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:14:21,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:14:21,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707846422] [2024-06-04 15:14:21,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:14:21,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:14:21,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:14:21,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:14:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:14:21,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:14:21,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 638 transitions, 8363 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:21,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:14:21,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:14:21,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:14:22,831 INFO L124 PetriNetUnfolderBase]: 3304/5305 cut-off events. [2024-06-04 15:14:22,831 INFO L125 PetriNetUnfolderBase]: For 1558652/1558656 co-relation queries the response was YES. [2024-06-04 15:14:22,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64357 conditions, 5305 events. 3304/5305 cut-off events. For 1558652/1558656 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 32097 event pairs, 689 based on Foata normal form. 5/5309 useless extension candidates. Maximal degree in co-relation 64159. Up to 4790 conditions per place. [2024-06-04 15:14:22,920 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 565 selfloop transitions, 86 changer transitions 0/656 dead transitions. [2024-06-04 15:14:22,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 656 transitions, 9999 flow [2024-06-04 15:14:22,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:14:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:14:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-04 15:14:22,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134366925064599 [2024-06-04 15:14:22,921 INFO L175 Difference]: Start difference. First operand has 432 places, 638 transitions, 8363 flow. Second operand 9 states and 160 transitions. [2024-06-04 15:14:22,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 656 transitions, 9999 flow [2024-06-04 15:14:27,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 656 transitions, 9583 flow, removed 178 selfloop flow, removed 4 redundant places. [2024-06-04 15:14:27,686 INFO L231 Difference]: Finished difference. Result has 437 places, 638 transitions, 8125 flow [2024-06-04 15:14:27,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7947, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8125, PETRI_PLACES=437, PETRI_TRANSITIONS=638} [2024-06-04 15:14:27,686 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 393 predicate places. [2024-06-04 15:14:27,686 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 638 transitions, 8125 flow [2024-06-04 15:14:27,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:27,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:14:27,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:14:27,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:14:27,687 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:14:27,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:14:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1455614002, now seen corresponding path program 13 times [2024-06-04 15:14:27,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:14:27,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195512293] [2024-06-04 15:14:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:14:27,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:14:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:14:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:14:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:14:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195512293] [2024-06-04 15:14:28,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195512293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:14:28,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:14:28,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:14:28,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541515619] [2024-06-04 15:14:28,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:14:28,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:14:28,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:14:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:14:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:14:28,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:14:28,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 638 transitions, 8125 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:28,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:14:28,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:14:28,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:14:30,101 INFO L124 PetriNetUnfolderBase]: 3314/5318 cut-off events. [2024-06-04 15:14:30,101 INFO L125 PetriNetUnfolderBase]: For 1584074/1584074 co-relation queries the response was YES. [2024-06-04 15:14:30,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64588 conditions, 5318 events. 3314/5318 cut-off events. For 1584074/1584074 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 32163 event pairs, 682 based on Foata normal form. 2/5319 useless extension candidates. Maximal degree in co-relation 64388. Up to 4766 conditions per place. [2024-06-04 15:14:30,194 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 579 selfloop transitions, 79 changer transitions 0/663 dead transitions. [2024-06-04 15:14:30,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 663 transitions, 9684 flow [2024-06-04 15:14:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:14:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:14:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-04 15:14:30,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-04 15:14:30,196 INFO L175 Difference]: Start difference. First operand has 437 places, 638 transitions, 8125 flow. Second operand 9 states and 163 transitions. [2024-06-04 15:14:30,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 663 transitions, 9684 flow [2024-06-04 15:14:34,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 663 transitions, 9520 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:14:34,658 INFO L231 Difference]: Finished difference. Result has 439 places, 641 transitions, 8285 flow [2024-06-04 15:14:34,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7961, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8285, PETRI_PLACES=439, PETRI_TRANSITIONS=641} [2024-06-04 15:14:34,659 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 395 predicate places. [2024-06-04 15:14:34,659 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 641 transitions, 8285 flow [2024-06-04 15:14:34,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:34,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:14:34,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:14:34,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:14:34,660 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:14:34,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:14:34,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1779582369, now seen corresponding path program 5 times [2024-06-04 15:14:34,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:14:34,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523154743] [2024-06-04 15:14:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:14:34,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:14:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:14:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:14:35,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:14:35,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523154743] [2024-06-04 15:14:35,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523154743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:14:35,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:14:35,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:14:35,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072306628] [2024-06-04 15:14:35,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:14:35,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:14:35,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:14:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:14:35,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:14:35,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:14:35,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 641 transitions, 8285 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:35,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:14:35,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:14:35,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:14:37,059 INFO L124 PetriNetUnfolderBase]: 3308/5315 cut-off events. [2024-06-04 15:14:37,060 INFO L125 PetriNetUnfolderBase]: For 1586343/1586347 co-relation queries the response was YES. [2024-06-04 15:14:37,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64424 conditions, 5315 events. 3308/5315 cut-off events. For 1586343/1586347 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 32186 event pairs, 682 based on Foata normal form. 6/5320 useless extension candidates. Maximal degree in co-relation 64223. Up to 4858 conditions per place. [2024-06-04 15:14:37,311 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 610 selfloop transitions, 47 changer transitions 0/662 dead transitions. [2024-06-04 15:14:37,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 662 transitions, 9707 flow [2024-06-04 15:14:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:14:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:14:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-04 15:14:37,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108527131782946 [2024-06-04 15:14:37,313 INFO L175 Difference]: Start difference. First operand has 439 places, 641 transitions, 8285 flow. Second operand 9 states and 159 transitions. [2024-06-04 15:14:37,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 662 transitions, 9707 flow [2024-06-04 15:14:41,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 662 transitions, 9331 flow, removed 111 selfloop flow, removed 7 redundant places. [2024-06-04 15:14:41,838 INFO L231 Difference]: Finished difference. Result has 441 places, 642 transitions, 8036 flow [2024-06-04 15:14:41,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7925, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8036, PETRI_PLACES=441, PETRI_TRANSITIONS=642} [2024-06-04 15:14:41,838 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 397 predicate places. [2024-06-04 15:14:41,839 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 642 transitions, 8036 flow [2024-06-04 15:14:41,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:41,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:14:41,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:14:41,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 15:14:41,839 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:14:41,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:14:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash -291765378, now seen corresponding path program 14 times [2024-06-04 15:14:41,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:14:41,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262799276] [2024-06-04 15:14:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:14:41,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:14:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:14:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:14:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:14:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262799276] [2024-06-04 15:14:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262799276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:14:42,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:14:42,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:14:42,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152694256] [2024-06-04 15:14:42,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:14:42,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:14:42,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:14:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:14:42,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:14:42,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:14:42,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 642 transitions, 8036 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:42,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:14:42,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:14:42,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:14:44,490 INFO L124 PetriNetUnfolderBase]: 3318/5326 cut-off events. [2024-06-04 15:14:44,491 INFO L125 PetriNetUnfolderBase]: For 1603982/1603982 co-relation queries the response was YES. [2024-06-04 15:14:44,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64428 conditions, 5326 events. 3318/5326 cut-off events. For 1603982/1603982 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 32211 event pairs, 673 based on Foata normal form. 2/5327 useless extension candidates. Maximal degree in co-relation 64226. Up to 4717 conditions per place. [2024-06-04 15:14:44,585 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 569 selfloop transitions, 93 changer transitions 0/667 dead transitions. [2024-06-04 15:14:44,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 667 transitions, 9891 flow [2024-06-04 15:14:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:14:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:14:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-04 15:14:44,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-04 15:14:44,586 INFO L175 Difference]: Start difference. First operand has 441 places, 642 transitions, 8036 flow. Second operand 9 states and 165 transitions. [2024-06-04 15:14:44,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 667 transitions, 9891 flow [2024-06-04 15:14:49,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 667 transitions, 9791 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:14:49,040 INFO L231 Difference]: Finished difference. Result has 443 places, 645 transitions, 8288 flow [2024-06-04 15:14:49,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7936, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8288, PETRI_PLACES=443, PETRI_TRANSITIONS=645} [2024-06-04 15:14:49,041 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 399 predicate places. [2024-06-04 15:14:49,041 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 645 transitions, 8288 flow [2024-06-04 15:14:49,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:49,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:14:49,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:14:49,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 15:14:49,042 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:14:49,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:14:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1636603132, now seen corresponding path program 15 times [2024-06-04 15:14:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:14:49,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774518612] [2024-06-04 15:14:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:14:49,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:14:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:14:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:14:50,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:14:50,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774518612] [2024-06-04 15:14:50,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774518612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:14:50,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:14:50,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:14:50,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659374743] [2024-06-04 15:14:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:14:50,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:14:50,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:14:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:14:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:14:50,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:14:50,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 645 transitions, 8288 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:50,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:14:50,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:14:50,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:14:51,603 INFO L124 PetriNetUnfolderBase]: 3312/5320 cut-off events. [2024-06-04 15:14:51,603 INFO L125 PetriNetUnfolderBase]: For 1604999/1604999 co-relation queries the response was YES. [2024-06-04 15:14:51,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64311 conditions, 5320 events. 3312/5320 cut-off events. For 1604999/1604999 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 32204 event pairs, 633 based on Foata normal form. 2/5321 useless extension candidates. Maximal degree in co-relation 64108. Up to 4712 conditions per place. [2024-06-04 15:14:51,689 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 569 selfloop transitions, 92 changer transitions 0/666 dead transitions. [2024-06-04 15:14:51,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 666 transitions, 9701 flow [2024-06-04 15:14:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:14:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:14:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-04 15:14:51,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-04 15:14:51,690 INFO L175 Difference]: Start difference. First operand has 443 places, 645 transitions, 8288 flow. Second operand 9 states and 165 transitions. [2024-06-04 15:14:51,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 666 transitions, 9701 flow [2024-06-04 15:14:56,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 666 transitions, 8799 flow, removed 137 selfloop flow, removed 11 redundant places. [2024-06-04 15:14:56,354 INFO L231 Difference]: Finished difference. Result has 441 places, 645 transitions, 7576 flow [2024-06-04 15:14:56,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7386, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7576, PETRI_PLACES=441, PETRI_TRANSITIONS=645} [2024-06-04 15:14:56,355 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 397 predicate places. [2024-06-04 15:14:56,355 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 645 transitions, 7576 flow [2024-06-04 15:14:56,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:56,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:14:56,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:14:56,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 15:14:56,355 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:14:56,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:14:56,356 INFO L85 PathProgramCache]: Analyzing trace with hash -123165279, now seen corresponding path program 6 times [2024-06-04 15:14:56,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:14:56,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228117596] [2024-06-04 15:14:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:14:56,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:14:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:14:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:14:57,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:14:57,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228117596] [2024-06-04 15:14:57,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228117596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:14:57,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:14:57,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:14:57,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203329784] [2024-06-04 15:14:57,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:14:57,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:14:57,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:14:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:14:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:14:57,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:14:57,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 645 transitions, 7576 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:14:57,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:14:57,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:14:57,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:14:58,833 INFO L124 PetriNetUnfolderBase]: 3338/5357 cut-off events. [2024-06-04 15:14:58,833 INFO L125 PetriNetUnfolderBase]: For 1642278/1642282 co-relation queries the response was YES. [2024-06-04 15:14:58,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64148 conditions, 5357 events. 3338/5357 cut-off events. For 1642278/1642282 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 32513 event pairs, 631 based on Foata normal form. 6/5362 useless extension candidates. Maximal degree in co-relation 63946. Up to 4763 conditions per place. [2024-06-04 15:14:58,921 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 586 selfloop transitions, 82 changer transitions 0/673 dead transitions. [2024-06-04 15:14:58,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 673 transitions, 9574 flow [2024-06-04 15:14:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:14:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:14:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-04 15:14:58,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-04 15:14:58,923 INFO L175 Difference]: Start difference. First operand has 441 places, 645 transitions, 7576 flow. Second operand 9 states and 163 transitions. [2024-06-04 15:14:58,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 673 transitions, 9574 flow [2024-06-04 15:15:03,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 673 transitions, 9338 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 15:15:03,489 INFO L231 Difference]: Finished difference. Result has 442 places, 654 transitions, 7861 flow [2024-06-04 15:15:03,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7340, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7861, PETRI_PLACES=442, PETRI_TRANSITIONS=654} [2024-06-04 15:15:03,490 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 398 predicate places. [2024-06-04 15:15:03,490 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 654 transitions, 7861 flow [2024-06-04 15:15:03,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:03,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:03,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 15:15:03,490 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:15:03,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash 755627676, now seen corresponding path program 16 times [2024-06-04 15:15:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168485551] [2024-06-04 15:15:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:04,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:04,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168485551] [2024-06-04 15:15:04,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168485551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:04,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:04,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241377665] [2024-06-04 15:15:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:04,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:15:04,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 654 transitions, 7861 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:04,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:04,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:15:04,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:06,195 INFO L124 PetriNetUnfolderBase]: 3380/5422 cut-off events. [2024-06-04 15:15:06,195 INFO L125 PetriNetUnfolderBase]: For 1724647/1724647 co-relation queries the response was YES. [2024-06-04 15:15:06,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66564 conditions, 5422 events. 3380/5422 cut-off events. For 1724647/1724647 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 32908 event pairs, 672 based on Foata normal form. 2/5423 useless extension candidates. Maximal degree in co-relation 66360. Up to 4554 conditions per place. [2024-06-04 15:15:06,293 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 528 selfloop transitions, 150 changer transitions 0/683 dead transitions. [2024-06-04 15:15:06,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 683 transitions, 10467 flow [2024-06-04 15:15:06,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 15:15:06,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315245478036176 [2024-06-04 15:15:06,294 INFO L175 Difference]: Start difference. First operand has 442 places, 654 transitions, 7861 flow. Second operand 9 states and 167 transitions. [2024-06-04 15:15:06,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 683 transitions, 10467 flow [2024-06-04 15:15:10,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 683 transitions, 10254 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-04 15:15:10,611 INFO L231 Difference]: Finished difference. Result has 447 places, 663 transitions, 8560 flow [2024-06-04 15:15:10,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7648, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8560, PETRI_PLACES=447, PETRI_TRANSITIONS=663} [2024-06-04 15:15:10,612 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 403 predicate places. [2024-06-04 15:15:10,612 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 663 transitions, 8560 flow [2024-06-04 15:15:10,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:10,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:10,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:10,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 15:15:10,612 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:15:10,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash 768514686, now seen corresponding path program 17 times [2024-06-04 15:15:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:10,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079871879] [2024-06-04 15:15:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:11,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079871879] [2024-06-04 15:15:11,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079871879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:11,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:11,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:11,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016428933] [2024-06-04 15:15:11,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:11,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:11,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:11,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:11,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:15:11,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 663 transitions, 8560 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:11,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:11,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:15:11,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:13,207 INFO L124 PetriNetUnfolderBase]: 3374/5430 cut-off events. [2024-06-04 15:15:13,208 INFO L125 PetriNetUnfolderBase]: For 1733996/1733996 co-relation queries the response was YES. [2024-06-04 15:15:13,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66876 conditions, 5430 events. 3374/5430 cut-off events. For 1733996/1733996 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 33125 event pairs, 614 based on Foata normal form. 2/5431 useless extension candidates. Maximal degree in co-relation 66670. Up to 4549 conditions per place. [2024-06-04 15:15:13,309 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 511 selfloop transitions, 166 changer transitions 0/682 dead transitions. [2024-06-04 15:15:13,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 682 transitions, 10280 flow [2024-06-04 15:15:13,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 15:15:13,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42377260981912146 [2024-06-04 15:15:13,311 INFO L175 Difference]: Start difference. First operand has 447 places, 663 transitions, 8560 flow. Second operand 9 states and 164 transitions. [2024-06-04 15:15:13,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 682 transitions, 10280 flow [2024-06-04 15:15:18,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 682 transitions, 9706 flow, removed 208 selfloop flow, removed 4 redundant places. [2024-06-04 15:15:18,055 INFO L231 Difference]: Finished difference. Result has 452 places, 663 transitions, 8324 flow [2024-06-04 15:15:18,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7986, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8324, PETRI_PLACES=452, PETRI_TRANSITIONS=663} [2024-06-04 15:15:18,059 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 408 predicate places. [2024-06-04 15:15:18,059 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 663 transitions, 8324 flow [2024-06-04 15:15:18,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:18,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:18,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:18,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 15:15:18,073 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:15:18,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:18,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1177349253, now seen corresponding path program 7 times [2024-06-04 15:15:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462537198] [2024-06-04 15:15:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:19,112 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 15:15:19,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:19,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462537198] [2024-06-04 15:15:19,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462537198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:19,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:19,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:19,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537980270] [2024-06-04 15:15:19,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:19,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:19,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:15:19,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 663 transitions, 8324 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:19,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:19,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:15:19,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:20,686 INFO L124 PetriNetUnfolderBase]: 3384/5433 cut-off events. [2024-06-04 15:15:20,686 INFO L125 PetriNetUnfolderBase]: For 1745352/1745356 co-relation queries the response was YES. [2024-06-04 15:15:20,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66997 conditions, 5433 events. 3384/5433 cut-off events. For 1745352/1745356 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 33062 event pairs, 664 based on Foata normal form. 6/5438 useless extension candidates. Maximal degree in co-relation 66789. Up to 4823 conditions per place. [2024-06-04 15:15:20,788 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 584 selfloop transitions, 96 changer transitions 0/685 dead transitions. [2024-06-04 15:15:20,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 685 transitions, 10166 flow [2024-06-04 15:15:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:20,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-04 15:15:20,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160206718346253 [2024-06-04 15:15:20,789 INFO L175 Difference]: Start difference. First operand has 452 places, 663 transitions, 8324 flow. Second operand 9 states and 161 transitions. [2024-06-04 15:15:20,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 685 transitions, 10166 flow [2024-06-04 15:15:26,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 685 transitions, 9807 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:26,200 INFO L231 Difference]: Finished difference. Result has 453 places, 666 transitions, 8277 flow [2024-06-04 15:15:26,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7965, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8277, PETRI_PLACES=453, PETRI_TRANSITIONS=666} [2024-06-04 15:15:26,201 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 409 predicate places. [2024-06-04 15:15:26,201 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 666 transitions, 8277 flow [2024-06-04 15:15:26,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:26,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:26,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:26,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 15:15:26,202 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:15:26,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:26,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1130872882, now seen corresponding path program 18 times [2024-06-04 15:15:26,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:26,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159958595] [2024-06-04 15:15:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:26,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:27,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159958595] [2024-06-04 15:15:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159958595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:27,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:27,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:27,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624889436] [2024-06-04 15:15:27,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:27,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:27,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:27,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:27,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:15:27,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 666 transitions, 8277 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:27,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:27,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:15:27,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:28,588 INFO L124 PetriNetUnfolderBase]: 3378/5420 cut-off events. [2024-06-04 15:15:28,589 INFO L125 PetriNetUnfolderBase]: For 1743904/1743904 co-relation queries the response was YES. [2024-06-04 15:15:28,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66470 conditions, 5420 events. 3378/5420 cut-off events. For 1743904/1743904 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 32868 event pairs, 674 based on Foata normal form. 2/5421 useless extension candidates. Maximal degree in co-relation 66261. Up to 4558 conditions per place. [2024-06-04 15:15:28,701 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 528 selfloop transitions, 151 changer transitions 0/684 dead transitions. [2024-06-04 15:15:28,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 684 transitions, 9713 flow [2024-06-04 15:15:28,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 15:15:28,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42377260981912146 [2024-06-04 15:15:28,703 INFO L175 Difference]: Start difference. First operand has 453 places, 666 transitions, 8277 flow. Second operand 9 states and 164 transitions. [2024-06-04 15:15:28,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 684 transitions, 9713 flow [2024-06-04 15:15:34,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 684 transitions, 9293 flow, removed 127 selfloop flow, removed 6 redundant places. [2024-06-04 15:15:34,308 INFO L231 Difference]: Finished difference. Result has 456 places, 666 transitions, 8165 flow [2024-06-04 15:15:34,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7857, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8165, PETRI_PLACES=456, PETRI_TRANSITIONS=666} [2024-06-04 15:15:34,312 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 412 predicate places. [2024-06-04 15:15:34,312 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 666 transitions, 8165 flow [2024-06-04 15:15:34,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:34,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:34,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:34,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 15:15:34,312 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:15:34,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:34,328 INFO L85 PathProgramCache]: Analyzing trace with hash -110278269, now seen corresponding path program 8 times [2024-06-04 15:15:34,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:34,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958365934] [2024-06-04 15:15:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:34,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:35,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:35,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958365934] [2024-06-04 15:15:35,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958365934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:35,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:35,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:35,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527663715] [2024-06-04 15:15:35,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:35,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:35,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:35,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:35,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:35,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:15:35,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 666 transitions, 8165 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:35,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:35,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:15:35,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:36,858 INFO L124 PetriNetUnfolderBase]: 3372/5417 cut-off events. [2024-06-04 15:15:36,859 INFO L125 PetriNetUnfolderBase]: For 1740321/1740325 co-relation queries the response was YES. [2024-06-04 15:15:36,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66079 conditions, 5417 events. 3372/5417 cut-off events. For 1740321/1740325 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 32946 event pairs, 625 based on Foata normal form. 6/5422 useless extension candidates. Maximal degree in co-relation 65869. Up to 4810 conditions per place. [2024-06-04 15:15:36,955 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 586 selfloop transitions, 93 changer transitions 0/684 dead transitions. [2024-06-04 15:15:36,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 684 transitions, 9601 flow [2024-06-04 15:15:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:15:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:15:36,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-04 15:15:36,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40232558139534885 [2024-06-04 15:15:36,957 INFO L175 Difference]: Start difference. First operand has 456 places, 666 transitions, 8165 flow. Second operand 10 states and 173 transitions. [2024-06-04 15:15:36,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 684 transitions, 9601 flow [2024-06-04 15:15:42,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 684 transitions, 9197 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:42,675 INFO L231 Difference]: Finished difference. Result has 458 places, 666 transitions, 7953 flow [2024-06-04 15:15:42,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7761, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7953, PETRI_PLACES=458, PETRI_TRANSITIONS=666} [2024-06-04 15:15:42,676 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 414 predicate places. [2024-06-04 15:15:42,676 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 666 transitions, 7953 flow [2024-06-04 15:15:42,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:42,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:42,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:42,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 15:15:42,677 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:15:42,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:42,677 INFO L85 PathProgramCache]: Analyzing trace with hash -677254116, now seen corresponding path program 19 times [2024-06-04 15:15:42,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:42,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222377175] [2024-06-04 15:15:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:42,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:43,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:43,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222377175] [2024-06-04 15:15:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222377175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:43,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:43,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661815642] [2024-06-04 15:15:43,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:43,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:43,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:43,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:43,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:43,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:15:43,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 666 transitions, 7953 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:43,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:43,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:15:43,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:45,340 INFO L124 PetriNetUnfolderBase]: 3422/5501 cut-off events. [2024-06-04 15:15:45,341 INFO L125 PetriNetUnfolderBase]: For 1831659/1831661 co-relation queries the response was YES. [2024-06-04 15:15:45,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68356 conditions, 5501 events. 3422/5501 cut-off events. For 1831659/1831661 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 33578 event pairs, 703 based on Foata normal form. 4/5504 useless extension candidates. Maximal degree in co-relation 68145. Up to 4192 conditions per place. [2024-06-04 15:15:45,442 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 432 selfloop transitions, 260 changer transitions 0/697 dead transitions. [2024-06-04 15:15:45,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 697 transitions, 11121 flow [2024-06-04 15:15:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 15:15:45,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-04 15:15:45,443 INFO L175 Difference]: Start difference. First operand has 458 places, 666 transitions, 7953 flow. Second operand 9 states and 169 transitions. [2024-06-04 15:15:45,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 697 transitions, 11121 flow [2024-06-04 15:15:51,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 697 transitions, 10957 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 15:15:51,174 INFO L231 Difference]: Finished difference. Result has 459 places, 678 transitions, 9145 flow [2024-06-04 15:15:51,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7789, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9145, PETRI_PLACES=459, PETRI_TRANSITIONS=678} [2024-06-04 15:15:51,189 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 415 predicate places. [2024-06-04 15:15:51,189 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 678 transitions, 9145 flow [2024-06-04 15:15:51,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:51,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:51,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:51,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 15:15:51,189 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:15:51,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1574779210, now seen corresponding path program 20 times [2024-06-04 15:15:51,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:51,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833007628] [2024-06-04 15:15:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:15:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:15:52,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:15:52,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833007628] [2024-06-04 15:15:52,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833007628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:15:52,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:15:52,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:15:52,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842211841] [2024-06-04 15:15:52,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:15:52,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:15:52,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:15:52,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:15:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:15:52,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:15:52,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 678 transitions, 9145 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:52,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:15:52,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:15:52,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:15:53,988 INFO L124 PetriNetUnfolderBase]: 3448/5539 cut-off events. [2024-06-04 15:15:53,989 INFO L125 PetriNetUnfolderBase]: For 1897658/1897660 co-relation queries the response was YES. [2024-06-04 15:15:54,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70585 conditions, 5539 events. 3448/5539 cut-off events. For 1897658/1897660 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 33895 event pairs, 660 based on Foata normal form. 4/5542 useless extension candidates. Maximal degree in co-relation 70373. Up to 4217 conditions per place. [2024-06-04 15:15:54,081 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 433 selfloop transitions, 265 changer transitions 0/703 dead transitions. [2024-06-04 15:15:54,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 703 transitions, 11931 flow [2024-06-04 15:15:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:15:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:15:54,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-04 15:15:54,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-04 15:15:54,083 INFO L175 Difference]: Start difference. First operand has 459 places, 678 transitions, 9145 flow. Second operand 9 states and 169 transitions. [2024-06-04 15:15:54,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 703 transitions, 11931 flow [2024-06-04 15:15:59,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 703 transitions, 11111 flow, removed 224 selfloop flow, removed 4 redundant places. [2024-06-04 15:15:59,680 INFO L231 Difference]: Finished difference. Result has 464 places, 684 transitions, 9285 flow [2024-06-04 15:15:59,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8427, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9285, PETRI_PLACES=464, PETRI_TRANSITIONS=684} [2024-06-04 15:15:59,681 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 420 predicate places. [2024-06-04 15:15:59,681 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 684 transitions, 9285 flow [2024-06-04 15:15:59,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:15:59,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:15:59,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:15:59,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 15:15:59,682 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:15:59,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:15:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash 787366114, now seen corresponding path program 21 times [2024-06-04 15:15:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:15:59,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137823511] [2024-06-04 15:15:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:15:59,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:15:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:00,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:00,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137823511] [2024-06-04 15:16:00,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137823511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:00,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:00,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:16:00,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878999365] [2024-06-04 15:16:00,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:00,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:16:00,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:00,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:16:00,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:16:00,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:16:00,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 684 transitions, 9285 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:00,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:00,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:16:00,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:02,411 INFO L124 PetriNetUnfolderBase]: 3458/5559 cut-off events. [2024-06-04 15:16:02,411 INFO L125 PetriNetUnfolderBase]: For 1887697/1887699 co-relation queries the response was YES. [2024-06-04 15:16:02,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69781 conditions, 5559 events. 3458/5559 cut-off events. For 1887697/1887699 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 34024 event pairs, 710 based on Foata normal form. 4/5562 useless extension candidates. Maximal degree in co-relation 69568. Up to 4227 conditions per place. [2024-06-04 15:16:02,511 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 420 selfloop transitions, 280 changer transitions 0/705 dead transitions. [2024-06-04 15:16:02,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 705 transitions, 11543 flow [2024-06-04 15:16:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:02,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 15:16:02,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315245478036176 [2024-06-04 15:16:02,513 INFO L175 Difference]: Start difference. First operand has 464 places, 684 transitions, 9285 flow. Second operand 9 states and 167 transitions. [2024-06-04 15:16:02,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 705 transitions, 11543 flow [2024-06-04 15:16:09,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 705 transitions, 10948 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-04 15:16:09,344 INFO L231 Difference]: Finished difference. Result has 469 places, 687 transitions, 9442 flow [2024-06-04 15:16:09,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8693, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9442, PETRI_PLACES=469, PETRI_TRANSITIONS=687} [2024-06-04 15:16:09,345 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 425 predicate places. [2024-06-04 15:16:09,345 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 687 transitions, 9442 flow [2024-06-04 15:16:09,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:09,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:09,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:16:09,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 15:16:09,346 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:16:09,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash 787377677, now seen corresponding path program 9 times [2024-06-04 15:16:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404713368] [2024-06-04 15:16:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:09,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:10,420 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 15:16:10,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:10,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404713368] [2024-06-04 15:16:10,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404713368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:10,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:10,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:16:10,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043512558] [2024-06-04 15:16:10,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:10,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:16:10,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:10,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:16:10,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:16:10,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:16:10,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 687 transitions, 9442 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:10,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:10,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:16:10,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:11,905 INFO L124 PetriNetUnfolderBase]: 3492/5596 cut-off events. [2024-06-04 15:16:11,905 INFO L125 PetriNetUnfolderBase]: For 1950183/1950189 co-relation queries the response was YES. [2024-06-04 15:16:11,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71012 conditions, 5596 events. 3492/5596 cut-off events. For 1950183/1950189 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 34203 event pairs, 631 based on Foata normal form. 8/5603 useless extension candidates. Maximal degree in co-relation 70798. Up to 4708 conditions per place. [2024-06-04 15:16:12,014 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 560 selfloop transitions, 162 changer transitions 0/727 dead transitions. [2024-06-04 15:16:12,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 727 transitions, 12109 flow [2024-06-04 15:16:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:16:12,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:16:12,015 INFO L175 Difference]: Start difference. First operand has 469 places, 687 transitions, 9442 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:16:12,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 727 transitions, 12109 flow [2024-06-04 15:16:18,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 727 transitions, 11150 flow, removed 95 selfloop flow, removed 9 redundant places. [2024-06-04 15:16:18,405 INFO L231 Difference]: Finished difference. Result has 471 places, 709 transitions, 9531 flow [2024-06-04 15:16:18,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8483, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9531, PETRI_PLACES=471, PETRI_TRANSITIONS=709} [2024-06-04 15:16:18,406 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 427 predicate places. [2024-06-04 15:16:18,406 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 709 transitions, 9531 flow [2024-06-04 15:16:18,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:18,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:18,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:16:18,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 15:16:18,406 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:16:18,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:18,407 INFO L85 PathProgramCache]: Analyzing trace with hash 787377274, now seen corresponding path program 22 times [2024-06-04 15:16:18,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:18,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649727178] [2024-06-04 15:16:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:18,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:19,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:19,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649727178] [2024-06-04 15:16:19,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649727178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:19,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:19,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:16:19,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422435371] [2024-06-04 15:16:19,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:19,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:16:19,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:16:19,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:16:19,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:16:19,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 709 transitions, 9531 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:19,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:19,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:16:19,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:21,221 INFO L124 PetriNetUnfolderBase]: 3502/5620 cut-off events. [2024-06-04 15:16:21,222 INFO L125 PetriNetUnfolderBase]: For 1977552/1977554 co-relation queries the response was YES. [2024-06-04 15:16:21,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71076 conditions, 5620 events. 3502/5620 cut-off events. For 1977552/1977554 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 34409 event pairs, 699 based on Foata normal form. 4/5623 useless extension candidates. Maximal degree in co-relation 70860. Up to 4284 conditions per place. [2024-06-04 15:16:21,333 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 441 selfloop transitions, 284 changer transitions 0/730 dead transitions. [2024-06-04 15:16:21,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 730 transitions, 11819 flow [2024-06-04 15:16:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:16:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:16:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-04 15:16:21,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42093023255813955 [2024-06-04 15:16:21,335 INFO L175 Difference]: Start difference. First operand has 471 places, 709 transitions, 9531 flow. Second operand 10 states and 181 transitions. [2024-06-04 15:16:21,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 730 transitions, 11819 flow [2024-06-04 15:16:27,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 730 transitions, 11548 flow, removed 118 selfloop flow, removed 3 redundant places. [2024-06-04 15:16:27,794 INFO L231 Difference]: Finished difference. Result has 478 places, 712 transitions, 9992 flow [2024-06-04 15:16:27,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9260, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9992, PETRI_PLACES=478, PETRI_TRANSITIONS=712} [2024-06-04 15:16:27,795 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 434 predicate places. [2024-06-04 15:16:27,795 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 712 transitions, 9992 flow [2024-06-04 15:16:27,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:27,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:27,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:16:27,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:16:27,796 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:16:27,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash -408732147, now seen corresponding path program 10 times [2024-06-04 15:16:27,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:27,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035980694] [2024-06-04 15:16:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:27,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:28,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:28,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035980694] [2024-06-04 15:16:28,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035980694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:28,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:28,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:16:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254284424] [2024-06-04 15:16:28,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:28,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:16:28,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:28,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:16:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:16:28,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:16:28,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 712 transitions, 9992 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:28,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:28,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:16:28,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:30,352 INFO L124 PetriNetUnfolderBase]: 3512/5624 cut-off events. [2024-06-04 15:16:30,353 INFO L125 PetriNetUnfolderBase]: For 1983700/1983706 co-relation queries the response was YES. [2024-06-04 15:16:30,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71230 conditions, 5624 events. 3512/5624 cut-off events. For 1983700/1983706 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 34313 event pairs, 631 based on Foata normal form. 8/5631 useless extension candidates. Maximal degree in co-relation 71012. Up to 4732 conditions per place. [2024-06-04 15:16:30,635 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 564 selfloop transitions, 165 changer transitions 0/734 dead transitions. [2024-06-04 15:16:30,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 734 transitions, 12274 flow [2024-06-04 15:16:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:16:30,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:16:30,637 INFO L175 Difference]: Start difference. First operand has 478 places, 712 transitions, 9992 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:16:30,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 734 transitions, 12274 flow [2024-06-04 15:16:37,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 734 transitions, 11580 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-04 15:16:37,813 INFO L231 Difference]: Finished difference. Result has 480 places, 716 transitions, 9774 flow [2024-06-04 15:16:37,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9298, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9774, PETRI_PLACES=480, PETRI_TRANSITIONS=716} [2024-06-04 15:16:37,814 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 436 predicate places. [2024-06-04 15:16:37,814 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 716 transitions, 9774 flow [2024-06-04 15:16:37,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:37,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:37,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:16:37,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:16:37,815 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:16:37,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash 517223076, now seen corresponding path program 23 times [2024-06-04 15:16:37,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:37,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038046538] [2024-06-04 15:16:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:39,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:39,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038046538] [2024-06-04 15:16:39,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038046538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:39,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:39,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:16:39,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881512888] [2024-06-04 15:16:39,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:39,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:16:39,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:39,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:16:39,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:16:39,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:16:39,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 716 transitions, 9774 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:39,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:39,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:16:39,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:40,780 INFO L124 PetriNetUnfolderBase]: 3506/5606 cut-off events. [2024-06-04 15:16:40,781 INFO L125 PetriNetUnfolderBase]: For 1978449/1978449 co-relation queries the response was YES. [2024-06-04 15:16:40,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70396 conditions, 5606 events. 3506/5606 cut-off events. For 1978449/1978449 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34037 event pairs, 711 based on Foata normal form. 2/5607 useless extension candidates. Maximal degree in co-relation 70177. Up to 5060 conditions per place. [2024-06-04 15:16:40,885 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 638 selfloop transitions, 87 changer transitions 0/730 dead transitions. [2024-06-04 15:16:40,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 730 transitions, 11580 flow [2024-06-04 15:16:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:16:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:16:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-04 15:16:40,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108527131782946 [2024-06-04 15:16:40,887 INFO L175 Difference]: Start difference. First operand has 480 places, 716 transitions, 9774 flow. Second operand 9 states and 159 transitions. [2024-06-04 15:16:40,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 730 transitions, 11580 flow [2024-06-04 15:16:48,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 730 transitions, 11146 flow, removed 134 selfloop flow, removed 4 redundant places. [2024-06-04 15:16:48,183 INFO L231 Difference]: Finished difference. Result has 485 places, 716 transitions, 9520 flow [2024-06-04 15:16:48,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9340, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9520, PETRI_PLACES=485, PETRI_TRANSITIONS=716} [2024-06-04 15:16:48,183 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 441 predicate places. [2024-06-04 15:16:48,183 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 716 transitions, 9520 flow [2024-06-04 15:16:48,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:48,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:48,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:16:48,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 15:16:48,184 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:16:48,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:48,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2033900332, now seen corresponding path program 24 times [2024-06-04 15:16:48,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:48,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565021632] [2024-06-04 15:16:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:48,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565021632] [2024-06-04 15:16:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565021632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:49,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:49,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:16:49,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418401868] [2024-06-04 15:16:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:49,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:16:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:49,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:16:49,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:16:49,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:16:49,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 716 transitions, 9520 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:49,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:49,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:16:49,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:16:51,038 INFO L124 PetriNetUnfolderBase]: 3521/5635 cut-off events. [2024-06-04 15:16:51,039 INFO L125 PetriNetUnfolderBase]: For 1998886/1998886 co-relation queries the response was YES. [2024-06-04 15:16:51,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70312 conditions, 5635 events. 3521/5635 cut-off events. For 1998886/1998886 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 34325 event pairs, 712 based on Foata normal form. 2/5636 useless extension candidates. Maximal degree in co-relation 70092. Up to 5074 conditions per place. [2024-06-04 15:16:51,147 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 640 selfloop transitions, 94 changer transitions 0/739 dead transitions. [2024-06-04 15:16:51,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 739 transitions, 11566 flow [2024-06-04 15:16:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:16:51,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:16:51,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-04 15:16:51,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974630021141649 [2024-06-04 15:16:51,150 INFO L175 Difference]: Start difference. First operand has 485 places, 716 transitions, 9520 flow. Second operand 11 states and 188 transitions. [2024-06-04 15:16:51,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 739 transitions, 11566 flow [2024-06-04 15:16:58,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 739 transitions, 11153 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:16:58,338 INFO L231 Difference]: Finished difference. Result has 486 places, 722 transitions, 9509 flow [2024-06-04 15:16:58,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9126, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9509, PETRI_PLACES=486, PETRI_TRANSITIONS=722} [2024-06-04 15:16:58,338 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 442 predicate places. [2024-06-04 15:16:58,338 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 722 transitions, 9509 flow [2024-06-04 15:16:58,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:58,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:16:58,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:16:58,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 15:16:58,339 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:16:58,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:16:58,340 INFO L85 PathProgramCache]: Analyzing trace with hash 800264687, now seen corresponding path program 11 times [2024-06-04 15:16:58,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:16:58,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634600404] [2024-06-04 15:16:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:16:58,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:16:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:16:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:16:59,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:16:59,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634600404] [2024-06-04 15:16:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634600404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:16:59,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:16:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:16:59,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148363733] [2024-06-04 15:16:59,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:16:59,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:16:59,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:16:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:16:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:16:59,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:16:59,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 722 transitions, 9509 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:16:59,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:16:59,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:16:59,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:01,104 INFO L124 PetriNetUnfolderBase]: 3547/5681 cut-off events. [2024-06-04 15:17:01,105 INFO L125 PetriNetUnfolderBase]: For 2050014/2050020 co-relation queries the response was YES. [2024-06-04 15:17:01,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70884 conditions, 5681 events. 3547/5681 cut-off events. For 2050014/2050020 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 34790 event pairs, 675 based on Foata normal form. 8/5688 useless extension candidates. Maximal degree in co-relation 70665. Up to 4770 conditions per place. [2024-06-04 15:17:01,211 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 568 selfloop transitions, 174 changer transitions 0/747 dead transitions. [2024-06-04 15:17:01,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 747 transitions, 11939 flow [2024-06-04 15:17:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:17:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:17:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 15:17:01,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315245478036176 [2024-06-04 15:17:01,213 INFO L175 Difference]: Start difference. First operand has 486 places, 722 transitions, 9509 flow. Second operand 9 states and 167 transitions. [2024-06-04 15:17:01,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 747 transitions, 11939 flow [2024-06-04 15:17:08,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 747 transitions, 11607 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-04 15:17:08,809 INFO L231 Difference]: Finished difference. Result has 487 places, 729 transitions, 9781 flow [2024-06-04 15:17:08,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9177, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9781, PETRI_PLACES=487, PETRI_TRANSITIONS=729} [2024-06-04 15:17:08,810 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 443 predicate places. [2024-06-04 15:17:08,810 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 729 transitions, 9781 flow [2024-06-04 15:17:08,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:08,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:08,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:17:08,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 15:17:08,810 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:17:08,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash 800264284, now seen corresponding path program 25 times [2024-06-04 15:17:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:08,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964575806] [2024-06-04 15:17:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:08,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:17:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964575806] [2024-06-04 15:17:09,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964575806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:09,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:09,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:17:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972651501] [2024-06-04 15:17:09,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:09,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:17:09,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:17:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:17:10,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:17:10,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 729 transitions, 9781 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:10,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:10,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:17:10,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:11,622 INFO L124 PetriNetUnfolderBase]: 3557/5723 cut-off events. [2024-06-04 15:17:11,622 INFO L125 PetriNetUnfolderBase]: For 2075772/2075774 co-relation queries the response was YES. [2024-06-04 15:17:11,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71414 conditions, 5723 events. 3557/5723 cut-off events. For 2075772/2075774 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 35324 event pairs, 694 based on Foata normal form. 4/5726 useless extension candidates. Maximal degree in co-relation 71194. Up to 4353 conditions per place. [2024-06-04 15:17:11,738 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 441 selfloop transitions, 303 changer transitions 0/749 dead transitions. [2024-06-04 15:17:11,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 749 transitions, 11816 flow [2024-06-04 15:17:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:17:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:17:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:17:11,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:17:11,740 INFO L175 Difference]: Start difference. First operand has 487 places, 729 transitions, 9781 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:17:11,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 749 transitions, 11816 flow [2024-06-04 15:17:18,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 749 transitions, 11449 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-04 15:17:18,331 INFO L231 Difference]: Finished difference. Result has 492 places, 732 transitions, 10187 flow [2024-06-04 15:17:18,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9414, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10187, PETRI_PLACES=492, PETRI_TRANSITIONS=732} [2024-06-04 15:17:18,331 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 448 predicate places. [2024-06-04 15:17:18,332 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 732 transitions, 10187 flow [2024-06-04 15:17:18,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:18,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:18,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:17:18,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 15:17:18,332 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:17:18,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash 800710157, now seen corresponding path program 12 times [2024-06-04 15:17:18,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:18,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346957901] [2024-06-04 15:17:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:18,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:17:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:19,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346957901] [2024-06-04 15:17:19,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346957901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:19,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:19,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:17:19,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765302106] [2024-06-04 15:17:19,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:19,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:17:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:19,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:17:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:17:19,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:17:19,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 732 transitions, 10187 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:19,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:19,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:17:19,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:21,220 INFO L124 PetriNetUnfolderBase]: 3551/5697 cut-off events. [2024-06-04 15:17:21,221 INFO L125 PetriNetUnfolderBase]: For 2074026/2074032 co-relation queries the response was YES. [2024-06-04 15:17:21,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71452 conditions, 5697 events. 3551/5697 cut-off events. For 2074026/2074032 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 35046 event pairs, 630 based on Foata normal form. 8/5704 useless extension candidates. Maximal degree in co-relation 71231. Up to 4779 conditions per place. [2024-06-04 15:17:21,320 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 567 selfloop transitions, 177 changer transitions 0/749 dead transitions. [2024-06-04 15:17:21,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 749 transitions, 12063 flow [2024-06-04 15:17:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:17:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:17:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-04 15:17:21,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-04 15:17:21,322 INFO L175 Difference]: Start difference. First operand has 492 places, 732 transitions, 10187 flow. Second operand 9 states and 165 transitions. [2024-06-04 15:17:21,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 749 transitions, 12063 flow [2024-06-04 15:17:28,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 749 transitions, 11326 flow, removed 119 selfloop flow, removed 6 redundant places. [2024-06-04 15:17:28,434 INFO L231 Difference]: Finished difference. Result has 495 places, 732 transitions, 9810 flow [2024-06-04 15:17:28,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9450, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9810, PETRI_PLACES=495, PETRI_TRANSITIONS=732} [2024-06-04 15:17:28,435 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 451 predicate places. [2024-06-04 15:17:28,435 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 732 transitions, 9810 flow [2024-06-04 15:17:28,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:28,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:28,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:17:28,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 15:17:28,436 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:17:28,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash -401113587, now seen corresponding path program 13 times [2024-06-04 15:17:28,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:28,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709295420] [2024-06-04 15:17:28,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:28,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:17:29,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:29,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709295420] [2024-06-04 15:17:29,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709295420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:29,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:29,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:17:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253454671] [2024-06-04 15:17:29,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:17:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:17:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:17:29,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:17:29,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 732 transitions, 9810 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:29,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:29,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:17:29,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:31,230 INFO L124 PetriNetUnfolderBase]: 3577/5723 cut-off events. [2024-06-04 15:17:31,230 INFO L125 PetriNetUnfolderBase]: For 2122243/2122249 co-relation queries the response was YES. [2024-06-04 15:17:31,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71751 conditions, 5723 events. 3577/5723 cut-off events. For 2122243/2122249 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 35135 event pairs, 666 based on Foata normal form. 8/5730 useless extension candidates. Maximal degree in co-relation 71529. Up to 4804 conditions per place. [2024-06-04 15:17:31,340 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 571 selfloop transitions, 181 changer transitions 0/757 dead transitions. [2024-06-04 15:17:31,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 757 transitions, 12306 flow [2024-06-04 15:17:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:17:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:17:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:17:31,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:17:31,341 INFO L175 Difference]: Start difference. First operand has 495 places, 732 transitions, 9810 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:17:31,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 757 transitions, 12306 flow [2024-06-04 15:17:39,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 757 transitions, 11948 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:17:39,087 INFO L231 Difference]: Finished difference. Result has 497 places, 739 transitions, 10104 flow [2024-06-04 15:17:39,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9466, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10104, PETRI_PLACES=497, PETRI_TRANSITIONS=739} [2024-06-04 15:17:39,088 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 453 predicate places. [2024-06-04 15:17:39,088 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 739 transitions, 10104 flow [2024-06-04 15:17:39,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:39,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:39,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:17:39,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 15:17:39,089 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:17:39,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1525763904, now seen corresponding path program 26 times [2024-06-04 15:17:39,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:39,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639304266] [2024-06-04 15:17:39,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:39,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:17:40,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:40,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639304266] [2024-06-04 15:17:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639304266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:40,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:40,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:17:40,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478541735] [2024-06-04 15:17:40,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:40,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:17:40,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:40,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:17:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:17:40,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:17:40,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 739 transitions, 10104 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:40,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:40,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:17:40,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:42,040 INFO L124 PetriNetUnfolderBase]: 3587/5733 cut-off events. [2024-06-04 15:17:42,041 INFO L125 PetriNetUnfolderBase]: For 2148328/2148328 co-relation queries the response was YES. [2024-06-04 15:17:42,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72188 conditions, 5733 events. 3587/5733 cut-off events. For 2148328/2148328 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 34989 event pairs, 727 based on Foata normal form. 2/5734 useless extension candidates. Maximal degree in co-relation 71965. Up to 5191 conditions per place. [2024-06-04 15:17:42,159 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 665 selfloop transitions, 84 changer transitions 0/754 dead transitions. [2024-06-04 15:17:42,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 754 transitions, 11806 flow [2024-06-04 15:17:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:17:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:17:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-04 15:17:42,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40568475452196384 [2024-06-04 15:17:42,161 INFO L175 Difference]: Start difference. First operand has 497 places, 739 transitions, 10104 flow. Second operand 9 states and 157 transitions. [2024-06-04 15:17:42,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 754 transitions, 11806 flow [2024-06-04 15:17:49,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 754 transitions, 11403 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-04 15:17:49,977 INFO L231 Difference]: Finished difference. Result has 501 places, 742 transitions, 10045 flow [2024-06-04 15:17:49,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9701, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10045, PETRI_PLACES=501, PETRI_TRANSITIONS=742} [2024-06-04 15:17:49,978 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 457 predicate places. [2024-06-04 15:17:49,978 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 742 transitions, 10045 flow [2024-06-04 15:17:49,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:49,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:17:49,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:17:49,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 15:17:49,978 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:17:49,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:17:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash -401380497, now seen corresponding path program 14 times [2024-06-04 15:17:49,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:17:49,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611812227] [2024-06-04 15:17:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:17:49,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:17:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:17:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:17:50,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:17:50,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611812227] [2024-06-04 15:17:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611812227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:17:50,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:17:50,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:17:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358417890] [2024-06-04 15:17:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:17:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:17:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:17:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:17:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:17:51,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:17:51,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 742 transitions, 10045 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:17:51,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:17:51,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:17:51,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:17:52,636 INFO L124 PetriNetUnfolderBase]: 3581/5731 cut-off events. [2024-06-04 15:17:52,637 INFO L125 PetriNetUnfolderBase]: For 2144752/2144758 co-relation queries the response was YES. [2024-06-04 15:17:52,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71506 conditions, 5731 events. 3581/5731 cut-off events. For 2144752/2144758 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 35168 event pairs, 670 based on Foata normal form. 8/5738 useless extension candidates. Maximal degree in co-relation 71282. Up to 4813 conditions per place. [2024-06-04 15:17:52,745 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 576 selfloop transitions, 178 changer transitions 0/759 dead transitions. [2024-06-04 15:17:52,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 759 transitions, 11947 flow [2024-06-04 15:17:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:17:52,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:17:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-04 15:17:52,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289405684754522 [2024-06-04 15:17:52,746 INFO L175 Difference]: Start difference. First operand has 501 places, 742 transitions, 10045 flow. Second operand 9 states and 166 transitions. [2024-06-04 15:17:52,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 759 transitions, 11947 flow [2024-06-04 15:18:00,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 759 transitions, 11539 flow, removed 123 selfloop flow, removed 6 redundant places. [2024-06-04 15:18:00,619 INFO L231 Difference]: Finished difference. Result has 504 places, 742 transitions, 9999 flow [2024-06-04 15:18:00,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9637, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9999, PETRI_PLACES=504, PETRI_TRANSITIONS=742} [2024-06-04 15:18:00,620 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 460 predicate places. [2024-06-04 15:18:00,620 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 742 transitions, 9999 flow [2024-06-04 15:18:00,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:00,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:00,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:00,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 15:18:00,621 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:18:00,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:00,621 INFO L85 PathProgramCache]: Analyzing trace with hash -731168398, now seen corresponding path program 27 times [2024-06-04 15:18:00,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:00,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936331053] [2024-06-04 15:18:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:00,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:01,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:01,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936331053] [2024-06-04 15:18:01,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936331053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:01,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:01,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:18:01,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134052317] [2024-06-04 15:18:01,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:01,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:18:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:18:01,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:18:01,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:18:01,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 742 transitions, 9999 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:01,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:01,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:18:01,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:03,373 INFO L124 PetriNetUnfolderBase]: 3575/5717 cut-off events. [2024-06-04 15:18:03,373 INFO L125 PetriNetUnfolderBase]: For 2138497/2138497 co-relation queries the response was YES. [2024-06-04 15:18:03,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71197 conditions, 5717 events. 3575/5717 cut-off events. For 2138497/2138497 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 34901 event pairs, 722 based on Foata normal form. 2/5718 useless extension candidates. Maximal degree in co-relation 70972. Up to 5175 conditions per place. [2024-06-04 15:18:03,484 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 655 selfloop transitions, 94 changer transitions 0/754 dead transitions. [2024-06-04 15:18:03,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 754 transitions, 11537 flow [2024-06-04 15:18:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:18:03,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:18:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-04 15:18:03,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005167958656331 [2024-06-04 15:18:03,485 INFO L175 Difference]: Start difference. First operand has 504 places, 742 transitions, 9999 flow. Second operand 9 states and 155 transitions. [2024-06-04 15:18:03,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 754 transitions, 11537 flow [2024-06-04 15:18:11,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 754 transitions, 11122 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-04 15:18:11,383 INFO L231 Difference]: Finished difference. Result has 508 places, 742 transitions, 9778 flow [2024-06-04 15:18:11,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9584, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9778, PETRI_PLACES=508, PETRI_TRANSITIONS=742} [2024-06-04 15:18:11,384 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 464 predicate places. [2024-06-04 15:18:11,384 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 742 transitions, 9778 flow [2024-06-04 15:18:11,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:11,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:11,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:11,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 15:18:11,385 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:18:11,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash -901866178, now seen corresponding path program 28 times [2024-06-04 15:18:11,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:11,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503786132] [2024-06-04 15:18:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:11,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:12,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:12,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503786132] [2024-06-04 15:18:12,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503786132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:12,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:12,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:18:12,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873993258] [2024-06-04 15:18:12,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:12,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:18:12,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:18:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:18:12,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:18:12,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 742 transitions, 9778 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:12,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:12,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:18:12,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:14,354 INFO L124 PetriNetUnfolderBase]: 3585/5795 cut-off events. [2024-06-04 15:18:14,355 INFO L125 PetriNetUnfolderBase]: For 2164272/2164274 co-relation queries the response was YES. [2024-06-04 15:18:14,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71209 conditions, 5795 events. 3585/5795 cut-off events. For 2164272/2164274 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 36259 event pairs, 670 based on Foata normal form. 4/5798 useless extension candidates. Maximal degree in co-relation 70983. Up to 4388 conditions per place. [2024-06-04 15:18:14,458 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 431 selfloop transitions, 327 changer transitions 0/763 dead transitions. [2024-06-04 15:18:14,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 763 transitions, 12182 flow [2024-06-04 15:18:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:18:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:18:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-04 15:18:14,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-04 15:18:14,459 INFO L175 Difference]: Start difference. First operand has 508 places, 742 transitions, 9778 flow. Second operand 10 states and 180 transitions. [2024-06-04 15:18:14,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 763 transitions, 12182 flow [2024-06-04 15:18:22,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 763 transitions, 11884 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 15:18:22,932 INFO L231 Difference]: Finished difference. Result has 508 places, 745 transitions, 10304 flow [2024-06-04 15:18:22,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9480, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10304, PETRI_PLACES=508, PETRI_TRANSITIONS=745} [2024-06-04 15:18:22,933 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 464 predicate places. [2024-06-04 15:18:22,933 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 745 transitions, 10304 flow [2024-06-04 15:18:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:22,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:22,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 15:18:22,934 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:18:22,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:22,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1532918394, now seen corresponding path program 29 times [2024-06-04 15:18:22,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:22,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557457666] [2024-06-04 15:18:22,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:24,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:24,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557457666] [2024-06-04 15:18:24,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557457666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:24,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:24,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:18:24,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676970758] [2024-06-04 15:18:24,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:24,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:18:24,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:18:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:18:24,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:18:24,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 745 transitions, 10304 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:24,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:24,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:18:24,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:25,803 INFO L124 PetriNetUnfolderBase]: 3579/5751 cut-off events. [2024-06-04 15:18:25,806 INFO L125 PetriNetUnfolderBase]: For 2162613/2162615 co-relation queries the response was YES. [2024-06-04 15:18:25,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71541 conditions, 5751 events. 3579/5751 cut-off events. For 2162613/2162615 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 35452 event pairs, 648 based on Foata normal form. 4/5754 useless extension candidates. Maximal degree in co-relation 71314. Up to 4383 conditions per place. [2024-06-04 15:18:25,925 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 469 selfloop transitions, 288 changer transitions 0/762 dead transitions. [2024-06-04 15:18:25,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 762 transitions, 12218 flow [2024-06-04 15:18:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:18:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:18:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-04 15:18:25,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315245478036176 [2024-06-04 15:18:25,927 INFO L175 Difference]: Start difference. First operand has 508 places, 745 transitions, 10304 flow. Second operand 9 states and 167 transitions. [2024-06-04 15:18:25,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 762 transitions, 12218 flow [2024-06-04 15:18:35,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 762 transitions, 11465 flow, removed 148 selfloop flow, removed 6 redundant places. [2024-06-04 15:18:35,303 INFO L231 Difference]: Finished difference. Result has 511 places, 745 transitions, 10133 flow [2024-06-04 15:18:35,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9551, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10133, PETRI_PLACES=511, PETRI_TRANSITIONS=745} [2024-06-04 15:18:35,303 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 467 predicate places. [2024-06-04 15:18:35,303 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 745 transitions, 10133 flow [2024-06-04 15:18:35,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:35,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:35,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:35,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 15:18:35,304 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:18:35,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1206987057, now seen corresponding path program 15 times [2024-06-04 15:18:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:35,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114513435] [2024-06-04 15:18:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:35,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:36,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:36,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114513435] [2024-06-04 15:18:36,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114513435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:36,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:36,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:18:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898617891] [2024-06-04 15:18:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:18:36,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:18:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:18:36,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:18:36,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 745 transitions, 10133 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:36,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:36,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:18:36,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:38,188 INFO L124 PetriNetUnfolderBase]: 3621/5811 cut-off events. [2024-06-04 15:18:38,189 INFO L125 PetriNetUnfolderBase]: For 2241234/2241240 co-relation queries the response was YES. [2024-06-04 15:18:38,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72701 conditions, 5811 events. 3621/5811 cut-off events. For 2241234/2241240 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 35905 event pairs, 662 based on Foata normal form. 8/5818 useless extension candidates. Maximal degree in co-relation 72473. Up to 4851 conditions per place. [2024-06-04 15:18:38,302 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 565 selfloop transitions, 203 changer transitions 0/773 dead transitions. [2024-06-04 15:18:38,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 773 transitions, 12813 flow [2024-06-04 15:18:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:18:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:18:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-04 15:18:38,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-04 15:18:38,303 INFO L175 Difference]: Start difference. First operand has 511 places, 745 transitions, 10133 flow. Second operand 9 states and 165 transitions. [2024-06-04 15:18:38,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 773 transitions, 12813 flow [2024-06-04 15:18:46,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 773 transitions, 12022 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-04 15:18:46,464 INFO L231 Difference]: Finished difference. Result has 510 places, 755 transitions, 10166 flow [2024-06-04 15:18:46,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9342, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10166, PETRI_PLACES=510, PETRI_TRANSITIONS=755} [2024-06-04 15:18:46,465 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 466 predicate places. [2024-06-04 15:18:46,465 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 755 transitions, 10166 flow [2024-06-04 15:18:46,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:46,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:46,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:46,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 15:18:46,465 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:18:46,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:46,466 INFO L85 PathProgramCache]: Analyzing trace with hash -473502195, now seen corresponding path program 16 times [2024-06-04 15:18:46,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:46,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448489809] [2024-06-04 15:18:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:46,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:18:47,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448489809] [2024-06-04 15:18:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448489809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:47,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:47,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:18:47,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989879766] [2024-06-04 15:18:47,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:47,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:18:47,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:47,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:18:47,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:18:47,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:18:47,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 755 transitions, 10166 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:47,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:47,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:18:47,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:18:49,148 INFO L124 PetriNetUnfolderBase]: 3615/5805 cut-off events. [2024-06-04 15:18:49,148 INFO L125 PetriNetUnfolderBase]: For 2236732/2236738 co-relation queries the response was YES. [2024-06-04 15:18:49,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72012 conditions, 5805 events. 3615/5805 cut-off events. For 2236732/2236738 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 35941 event pairs, 650 based on Foata normal form. 8/5812 useless extension candidates. Maximal degree in co-relation 71783. Up to 4846 conditions per place. [2024-06-04 15:18:49,262 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 553 selfloop transitions, 215 changer transitions 0/773 dead transitions. [2024-06-04 15:18:49,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 773 transitions, 12438 flow [2024-06-04 15:18:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:18:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:18:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 15:18:49,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42377260981912146 [2024-06-04 15:18:49,263 INFO L175 Difference]: Start difference. First operand has 510 places, 755 transitions, 10166 flow. Second operand 9 states and 164 transitions. [2024-06-04 15:18:49,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 773 transitions, 12438 flow [2024-06-04 15:18:57,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 773 transitions, 11914 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-04 15:18:57,794 INFO L231 Difference]: Finished difference. Result has 513 places, 755 transitions, 10078 flow [2024-06-04 15:18:57,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9642, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10078, PETRI_PLACES=513, PETRI_TRANSITIONS=755} [2024-06-04 15:18:57,795 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 469 predicate places. [2024-06-04 15:18:57,795 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 755 transitions, 10078 flow [2024-06-04 15:18:57,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:57,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:18:57,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:18:57,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 15:18:57,796 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:18:57,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:18:57,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1771657459, now seen corresponding path program 17 times [2024-06-04 15:18:57,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:18:57,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015122909] [2024-06-04 15:18:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:18:57,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:18:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:18:58,920 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 15:18:58,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:18:58,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015122909] [2024-06-04 15:18:58,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015122909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:18:58,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:18:58,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:18:58,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716964061] [2024-06-04 15:18:58,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:18:58,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:18:58,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:18:58,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:18:58,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:18:59,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:18:59,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 755 transitions, 10078 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:18:59,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:18:59,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:18:59,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:00,651 INFO L124 PetriNetUnfolderBase]: 3609/5791 cut-off events. [2024-06-04 15:19:00,651 INFO L125 PetriNetUnfolderBase]: For 2229322/2229328 co-relation queries the response was YES. [2024-06-04 15:19:00,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71612 conditions, 5791 events. 3609/5791 cut-off events. For 2229322/2229328 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 35725 event pairs, 659 based on Foata normal form. 8/5798 useless extension candidates. Maximal degree in co-relation 71382. Up to 4841 conditions per place. [2024-06-04 15:19:00,767 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 564 selfloop transitions, 203 changer transitions 0/772 dead transitions. [2024-06-04 15:19:00,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 772 transitions, 12018 flow [2024-06-04 15:19:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:19:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:19:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-04 15:19:00,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40930232558139534 [2024-06-04 15:19:00,769 INFO L175 Difference]: Start difference. First operand has 513 places, 755 transitions, 10078 flow. Second operand 10 states and 176 transitions. [2024-06-04 15:19:00,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 772 transitions, 12018 flow [2024-06-04 15:19:09,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 772 transitions, 11455 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-06-04 15:19:09,883 INFO L231 Difference]: Finished difference. Result has 517 places, 755 transitions, 9927 flow [2024-06-04 15:19:09,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9515, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9927, PETRI_PLACES=517, PETRI_TRANSITIONS=755} [2024-06-04 15:19:09,883 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 473 predicate places. [2024-06-04 15:19:09,883 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 755 transitions, 9927 flow [2024-06-04 15:19:09,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:09,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:09,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:09,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 15:19:09,884 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:19:09,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash -467788275, now seen corresponding path program 18 times [2024-06-04 15:19:09,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:09,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883525255] [2024-06-04 15:19:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:09,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:10,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:10,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883525255] [2024-06-04 15:19:10,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883525255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:10,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:10,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:19:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608680578] [2024-06-04 15:19:10,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:10,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:19:10,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:10,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:19:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:19:11,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:19:11,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 755 transitions, 9927 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:11,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:11,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:19:11,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:12,748 INFO L124 PetriNetUnfolderBase]: 3619/5805 cut-off events. [2024-06-04 15:19:12,748 INFO L125 PetriNetUnfolderBase]: For 2251862/2251868 co-relation queries the response was YES. [2024-06-04 15:19:12,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71681 conditions, 5805 events. 3619/5805 cut-off events. For 2251862/2251868 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 35861 event pairs, 647 based on Foata normal form. 8/5812 useless extension candidates. Maximal degree in co-relation 71450. Up to 4851 conditions per place. [2024-06-04 15:19:12,852 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 552 selfloop transitions, 219 changer transitions 0/776 dead transitions. [2024-06-04 15:19:12,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 776 transitions, 12009 flow [2024-06-04 15:19:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:19:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:19:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-04 15:19:12,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-04 15:19:12,854 INFO L175 Difference]: Start difference. First operand has 517 places, 755 transitions, 9927 flow. Second operand 9 states and 163 transitions. [2024-06-04 15:19:12,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 776 transitions, 12009 flow [2024-06-04 15:19:22,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 776 transitions, 11615 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 15:19:22,467 INFO L231 Difference]: Finished difference. Result has 518 places, 759 transitions, 10109 flow [2024-06-04 15:19:22,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9538, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10109, PETRI_PLACES=518, PETRI_TRANSITIONS=759} [2024-06-04 15:19:22,467 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 474 predicate places. [2024-06-04 15:19:22,468 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 759 transitions, 10109 flow [2024-06-04 15:19:22,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:22,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:22,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:22,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 15:19:22,468 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:19:22,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash -724288785, now seen corresponding path program 19 times [2024-06-04 15:19:22,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:22,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695993396] [2024-06-04 15:19:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:23,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:23,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695993396] [2024-06-04 15:19:23,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695993396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:23,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:23,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:19:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739150009] [2024-06-04 15:19:23,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:23,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:19:23,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:19:23,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:19:23,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:19:23,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 759 transitions, 10109 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:23,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:23,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:19:23,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:25,166 INFO L124 PetriNetUnfolderBase]: 3613/5797 cut-off events. [2024-06-04 15:19:25,166 INFO L125 PetriNetUnfolderBase]: For 2247637/2247643 co-relation queries the response was YES. [2024-06-04 15:19:25,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71486 conditions, 5797 events. 3613/5797 cut-off events. For 2247637/2247643 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 35820 event pairs, 663 based on Foata normal form. 8/5804 useless extension candidates. Maximal degree in co-relation 71254. Up to 4846 conditions per place. [2024-06-04 15:19:25,280 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 564 selfloop transitions, 207 changer transitions 0/776 dead transitions. [2024-06-04 15:19:25,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 776 transitions, 12061 flow [2024-06-04 15:19:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:19:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:19:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-04 15:19:25,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42377260981912146 [2024-06-04 15:19:25,282 INFO L175 Difference]: Start difference. First operand has 518 places, 759 transitions, 10109 flow. Second operand 9 states and 164 transitions. [2024-06-04 15:19:25,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 776 transitions, 12061 flow [2024-06-04 15:19:34,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 776 transitions, 11541 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-06-04 15:19:34,671 INFO L231 Difference]: Finished difference. Result has 522 places, 759 transitions, 10009 flow [2024-06-04 15:19:34,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9589, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10009, PETRI_PLACES=522, PETRI_TRANSITIONS=759} [2024-06-04 15:19:34,671 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 478 predicate places. [2024-06-04 15:19:34,672 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 759 transitions, 10009 flow [2024-06-04 15:19:34,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:34,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:34,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:34,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 15:19:34,672 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:19:34,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:34,673 INFO L85 PathProgramCache]: Analyzing trace with hash -724734658, now seen corresponding path program 30 times [2024-06-04 15:19:34,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:34,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341844875] [2024-06-04 15:19:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:34,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:35,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341844875] [2024-06-04 15:19:35,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341844875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:35,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:35,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:19:35,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795508487] [2024-06-04 15:19:35,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:35,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:19:35,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:35,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:19:35,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:19:35,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:19:35,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 759 transitions, 10009 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:35,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:35,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:19:35,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:37,661 INFO L124 PetriNetUnfolderBase]: 3607/5829 cut-off events. [2024-06-04 15:19:37,662 INFO L125 PetriNetUnfolderBase]: For 2244419/2244421 co-relation queries the response was YES. [2024-06-04 15:19:37,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71010 conditions, 5829 events. 3607/5829 cut-off events. For 2244419/2244421 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 36465 event pairs, 677 based on Foata normal form. 4/5832 useless extension candidates. Maximal degree in co-relation 70777. Up to 4426 conditions per place. [2024-06-04 15:19:37,765 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 438 selfloop transitions, 332 changer transitions 0/775 dead transitions. [2024-06-04 15:19:37,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 775 transitions, 11621 flow [2024-06-04 15:19:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:19:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:19:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-04 15:19:37,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116279069767442 [2024-06-04 15:19:37,767 INFO L175 Difference]: Start difference. First operand has 522 places, 759 transitions, 10009 flow. Second operand 10 states and 177 transitions. [2024-06-04 15:19:37,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 775 transitions, 11621 flow [2024-06-04 15:19:47,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 775 transitions, 11108 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-04 15:19:47,514 INFO L231 Difference]: Finished difference. Result has 526 places, 759 transitions, 10166 flow [2024-06-04 15:19:47,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9496, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10166, PETRI_PLACES=526, PETRI_TRANSITIONS=759} [2024-06-04 15:19:47,514 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 482 predicate places. [2024-06-04 15:19:47,514 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 759 transitions, 10166 flow [2024-06-04 15:19:47,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:47,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:19:47,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:19:47,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 15:19:47,515 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:19:47,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:19:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash -724734255, now seen corresponding path program 20 times [2024-06-04 15:19:47,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:19:47,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047918711] [2024-06-04 15:19:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:19:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:19:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:19:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:19:48,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:19:48,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047918711] [2024-06-04 15:19:48,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047918711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:19:48,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:19:48,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:19:48,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967711148] [2024-06-04 15:19:48,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:19:48,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:19:48,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:19:48,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:19:48,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:19:48,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:19:48,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 759 transitions, 10166 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:19:48,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:19:48,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:19:48,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:19:50,094 INFO L124 PetriNetUnfolderBase]: 3601/5787 cut-off events. [2024-06-04 15:19:50,094 INFO L125 PetriNetUnfolderBase]: For 2233380/2233386 co-relation queries the response was YES. [2024-06-04 15:19:50,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70920 conditions, 5787 events. 3601/5787 cut-off events. For 2233380/2233386 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 35848 event pairs, 632 based on Foata normal form. 8/5794 useless extension candidates. Maximal degree in co-relation 70686. Up to 4833 conditions per place. [2024-06-04 15:19:50,214 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 565 selfloop transitions, 205 changer transitions 0/775 dead transitions. [2024-06-04 15:19:50,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 775 transitions, 11778 flow [2024-06-04 15:19:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:19:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:19:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-04 15:19:50,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-04 15:19:50,215 INFO L175 Difference]: Start difference. First operand has 526 places, 759 transitions, 10166 flow. Second operand 9 states and 163 transitions. [2024-06-04 15:19:50,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 775 transitions, 11778 flow [2024-06-04 15:20:00,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 775 transitions, 10854 flow, removed 48 selfloop flow, removed 12 redundant places. [2024-06-04 15:20:00,815 INFO L231 Difference]: Finished difference. Result has 523 places, 759 transitions, 9658 flow [2024-06-04 15:20:00,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9242, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9658, PETRI_PLACES=523, PETRI_TRANSITIONS=759} [2024-06-04 15:20:00,815 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 479 predicate places. [2024-06-04 15:20:00,815 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 759 transitions, 9658 flow [2024-06-04 15:20:00,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:00,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:00,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:20:00,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 15:20:00,816 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:20:00,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash -901989124, now seen corresponding path program 7 times [2024-06-04 15:20:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:00,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985989916] [2024-06-04 15:20:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:20:01,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:01,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985989916] [2024-06-04 15:20:01,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985989916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:01,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:01,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:20:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998776407] [2024-06-04 15:20:01,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:01,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:20:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:20:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:20:01,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:20:01,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 759 transitions, 9658 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:01,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:01,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:20:01,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:03,748 INFO L124 PetriNetUnfolderBase]: 3609/5773 cut-off events. [2024-06-04 15:20:03,749 INFO L125 PetriNetUnfolderBase]: For 2254330/2254330 co-relation queries the response was YES. [2024-06-04 15:20:03,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70668 conditions, 5773 events. 3609/5773 cut-off events. For 2254330/2254330 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 35362 event pairs, 724 based on Foata normal form. 2/5774 useless extension candidates. Maximal degree in co-relation 70433. Up to 5225 conditions per place. [2024-06-04 15:20:03,854 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 675 selfloop transitions, 93 changer transitions 0/773 dead transitions. [2024-06-04 15:20:03,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 773 transitions, 11326 flow [2024-06-04 15:20:03,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:20:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:20:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-04 15:20:03,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979328165374677 [2024-06-04 15:20:03,855 INFO L175 Difference]: Start difference. First operand has 523 places, 759 transitions, 9658 flow. Second operand 9 states and 154 transitions. [2024-06-04 15:20:03,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 773 transitions, 11326 flow [2024-06-04 15:20:12,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 773 transitions, 10935 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 15:20:12,901 INFO L231 Difference]: Finished difference. Result has 525 places, 761 transitions, 9560 flow [2024-06-04 15:20:12,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9267, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9560, PETRI_PLACES=525, PETRI_TRANSITIONS=761} [2024-06-04 15:20:12,902 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 481 predicate places. [2024-06-04 15:20:12,902 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 761 transitions, 9560 flow [2024-06-04 15:20:12,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:12,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:12,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:20:12,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 15:20:12,902 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:20:12,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash -412545736, now seen corresponding path program 8 times [2024-06-04 15:20:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:12,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768340673] [2024-06-04 15:20:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:14,087 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 15:20:14,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:14,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768340673] [2024-06-04 15:20:14,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768340673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:14,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:14,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:20:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402510535] [2024-06-04 15:20:14,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:14,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:20:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:20:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:20:14,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:20:14,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 761 transitions, 9560 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:14,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:14,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:20:14,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:15,780 INFO L124 PetriNetUnfolderBase]: 3617/5789 cut-off events. [2024-06-04 15:20:15,780 INFO L125 PetriNetUnfolderBase]: For 2278696/2278696 co-relation queries the response was YES. [2024-06-04 15:20:15,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70755 conditions, 5789 events. 3617/5789 cut-off events. For 2278696/2278696 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 35447 event pairs, 729 based on Foata normal form. 2/5790 useless extension candidates. Maximal degree in co-relation 70519. Up to 5237 conditions per place. [2024-06-04 15:20:15,898 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 686 selfloop transitions, 84 changer transitions 0/775 dead transitions. [2024-06-04 15:20:15,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 775 transitions, 11236 flow [2024-06-04 15:20:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:20:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:20:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-04 15:20:15,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005167958656331 [2024-06-04 15:20:15,899 INFO L175 Difference]: Start difference. First operand has 525 places, 761 transitions, 9560 flow. Second operand 9 states and 155 transitions. [2024-06-04 15:20:15,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 775 transitions, 11236 flow [2024-06-04 15:20:25,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 775 transitions, 10959 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-04 15:20:25,189 INFO L231 Difference]: Finished difference. Result has 527 places, 763 transitions, 9562 flow [2024-06-04 15:20:25,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9283, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9562, PETRI_PLACES=527, PETRI_TRANSITIONS=763} [2024-06-04 15:20:25,190 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 483 predicate places. [2024-06-04 15:20:25,190 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 763 transitions, 9562 flow [2024-06-04 15:20:25,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:25,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:25,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:20:25,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 15:20:25,191 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:20:25,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash -401503846, now seen corresponding path program 9 times [2024-06-04 15:20:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:25,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254190478] [2024-06-04 15:20:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:25,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:20:26,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:26,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254190478] [2024-06-04 15:20:26,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254190478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:26,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:26,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:20:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739551061] [2024-06-04 15:20:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:26,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:20:26,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:20:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:20:26,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:20:26,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 763 transitions, 9562 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:26,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:26,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:20:26,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:28,113 INFO L124 PetriNetUnfolderBase]: 3625/5799 cut-off events. [2024-06-04 15:20:28,114 INFO L125 PetriNetUnfolderBase]: For 2302456/2302456 co-relation queries the response was YES. [2024-06-04 15:20:28,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71033 conditions, 5799 events. 3625/5799 cut-off events. For 2302456/2302456 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 35538 event pairs, 731 based on Foata normal form. 2/5800 useless extension candidates. Maximal degree in co-relation 70796. Up to 5249 conditions per place. [2024-06-04 15:20:28,244 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 689 selfloop transitions, 83 changer transitions 0/777 dead transitions. [2024-06-04 15:20:28,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 777 transitions, 11246 flow [2024-06-04 15:20:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:20:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:20:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-04 15:20:28,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2024-06-04 15:20:28,257 INFO L175 Difference]: Start difference. First operand has 527 places, 763 transitions, 9562 flow. Second operand 9 states and 156 transitions. [2024-06-04 15:20:28,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 777 transitions, 11246 flow [2024-06-04 15:20:36,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 777 transitions, 10983 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-04 15:20:36,415 INFO L231 Difference]: Finished difference. Result has 529 places, 765 transitions, 9580 flow [2024-06-04 15:20:36,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9299, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9580, PETRI_PLACES=529, PETRI_TRANSITIONS=765} [2024-06-04 15:20:36,416 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 485 predicate places. [2024-06-04 15:20:36,416 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 765 transitions, 9580 flow [2024-06-04 15:20:36,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:36,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:36,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:20:36,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 15:20:36,416 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:20:36,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash -412555036, now seen corresponding path program 10 times [2024-06-04 15:20:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:36,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919179929] [2024-06-04 15:20:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:36,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:20:37,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919179929] [2024-06-04 15:20:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919179929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:37,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:37,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:20:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312458508] [2024-06-04 15:20:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:37,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:20:37,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:37,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:20:37,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:20:37,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-04 15:20:37,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 765 transitions, 9580 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:37,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:37,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-04 15:20:37,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:39,369 INFO L124 PetriNetUnfolderBase]: 3620/5788 cut-off events. [2024-06-04 15:20:39,370 INFO L125 PetriNetUnfolderBase]: For 2293475/2293475 co-relation queries the response was YES. [2024-06-04 15:20:39,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70621 conditions, 5788 events. 3620/5788 cut-off events. For 2293475/2293475 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 35419 event pairs, 725 based on Foata normal form. 2/5789 useless extension candidates. Maximal degree in co-relation 70383. Up to 5216 conditions per place. [2024-06-04 15:20:39,497 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 684 selfloop transitions, 91 changer transitions 0/780 dead transitions. [2024-06-04 15:20:39,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 780 transitions, 11276 flow [2024-06-04 15:20:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:20:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:20:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-04 15:20:39,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2024-06-04 15:20:39,498 INFO L175 Difference]: Start difference. First operand has 529 places, 765 transitions, 9580 flow. Second operand 9 states and 156 transitions. [2024-06-04 15:20:39,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 780 transitions, 11276 flow [2024-06-04 15:20:50,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 780 transitions, 11011 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-04 15:20:50,022 INFO L231 Difference]: Finished difference. Result has 531 places, 767 transitions, 9616 flow [2024-06-04 15:20:50,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9315, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9616, PETRI_PLACES=531, PETRI_TRANSITIONS=767} [2024-06-04 15:20:50,023 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 487 predicate places. [2024-06-04 15:20:50,023 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 767 transitions, 9616 flow [2024-06-04 15:20:50,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:50,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:20:50,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:20:50,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 15:20:50,023 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:20:50,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:20:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1567150327, now seen corresponding path program 2 times [2024-06-04 15:20:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:20:50,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802019109] [2024-06-04 15:20:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:20:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:20:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:20:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:20:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:20:51,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802019109] [2024-06-04 15:20:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802019109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:20:51,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:20:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:20:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158835796] [2024-06-04 15:20:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:20:51,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:20:51,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:20:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:20:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:20:51,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:20:51,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 767 transitions, 9616 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:20:51,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:20:51,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:20:51,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:20:53,033 INFO L124 PetriNetUnfolderBase]: 3377/5478 cut-off events. [2024-06-04 15:20:53,034 INFO L125 PetriNetUnfolderBase]: For 2310585/2310617 co-relation queries the response was YES. [2024-06-04 15:20:53,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68530 conditions, 5478 events. 3377/5478 cut-off events. For 2310585/2310617 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 34253 event pairs, 661 based on Foata normal form. 7/5417 useless extension candidates. Maximal degree in co-relation 68291. Up to 4629 conditions per place. [2024-06-04 15:20:53,146 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 580 selfloop transitions, 110 changer transitions 0/782 dead transitions. [2024-06-04 15:20:53,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 782 transitions, 11160 flow [2024-06-04 15:20:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:20:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:20:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-04 15:20:53,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41627906976744183 [2024-06-04 15:20:53,148 INFO L175 Difference]: Start difference. First operand has 531 places, 767 transitions, 9616 flow. Second operand 10 states and 179 transitions. [2024-06-04 15:20:53,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 782 transitions, 11160 flow [2024-06-04 15:21:05,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 782 transitions, 10875 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-04 15:21:05,045 INFO L231 Difference]: Finished difference. Result has 534 places, 770 transitions, 9693 flow [2024-06-04 15:21:05,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9331, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9693, PETRI_PLACES=534, PETRI_TRANSITIONS=770} [2024-06-04 15:21:05,046 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 490 predicate places. [2024-06-04 15:21:05,046 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 770 transitions, 9693 flow [2024-06-04 15:21:05,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:05,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:05,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:05,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 15:21:05,046 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:21:05,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash -242954537, now seen corresponding path program 3 times [2024-06-04 15:21:05,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:05,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454941399] [2024-06-04 15:21:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:05,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:06,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:06,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454941399] [2024-06-04 15:21:06,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454941399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:06,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:06,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:21:06,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520600102] [2024-06-04 15:21:06,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:06,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:21:06,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:06,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:21:06,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:21:06,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:21:06,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 770 transitions, 9693 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:06,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:06,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:21:06,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:07,987 INFO L124 PetriNetUnfolderBase]: 3382/5485 cut-off events. [2024-06-04 15:21:07,987 INFO L125 PetriNetUnfolderBase]: For 2335060/2335116 co-relation queries the response was YES. [2024-06-04 15:21:08,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68925 conditions, 5485 events. 3382/5485 cut-off events. For 2335060/2335116 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 34244 event pairs, 661 based on Foata normal form. 10/5427 useless extension candidates. Maximal degree in co-relation 68685. Up to 4639 conditions per place. [2024-06-04 15:21:08,098 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 574 selfloop transitions, 119 changer transitions 0/785 dead transitions. [2024-06-04 15:21:08,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 785 transitions, 11249 flow [2024-06-04 15:21:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:21:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:21:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-04 15:21:08,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413953488372093 [2024-06-04 15:21:08,099 INFO L175 Difference]: Start difference. First operand has 534 places, 770 transitions, 9693 flow. Second operand 10 states and 178 transitions. [2024-06-04 15:21:08,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 785 transitions, 11249 flow [2024-06-04 15:21:18,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 785 transitions, 10909 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-04 15:21:18,467 INFO L231 Difference]: Finished difference. Result has 536 places, 773 transitions, 9739 flow [2024-06-04 15:21:18,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9353, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9739, PETRI_PLACES=536, PETRI_TRANSITIONS=773} [2024-06-04 15:21:18,467 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 492 predicate places. [2024-06-04 15:21:18,468 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 773 transitions, 9739 flow [2024-06-04 15:21:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:18,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:18,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 15:21:18,468 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 15:21:18,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2094936337, now seen corresponding path program 4 times [2024-06-04 15:21:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616978469] [2024-06-04 15:21:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:19,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:19,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616978469] [2024-06-04 15:21:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616978469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:19,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:21:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825776397] [2024-06-04 15:21:19,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:19,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:21:19,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:21:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:21:19,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-04 15:21:19,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 773 transitions, 9739 flow. Second operand has 11 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:19,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:19,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-04 15:21:19,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15