./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix053_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix053_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:21:37,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:21:37,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:21:37,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:21:37,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:21:37,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:21:37,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:21:37,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:21:37,652 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:21:37,655 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:21:37,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:21:37,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:21:37,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:21:37,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:21:37,658 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:21:37,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:21:37,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:21:37,658 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:21:37,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:21:37,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:21:37,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:21:37,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:21:37,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:21:37,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:21:37,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:21:37,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:21:37,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:21:37,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:21:37,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:21:37,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:21:37,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:21:37,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:21:37,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:21:37,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:21:37,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:21:37,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:21:37,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:21:37,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:21:37,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:21:37,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:21:37,664 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:21:37,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:21:37,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:21:37,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:21:37,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:21:37,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:21:37,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:21:37,976 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:21:37,976 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:21:37,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix053_tso.oepc.yml/witness.yml [2024-06-04 15:21:38,135 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:21:38,135 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:21:38,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i [2024-06-04 15:21:39,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:21:39,414 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:21:39,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053_tso.oepc.i [2024-06-04 15:21:39,427 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd9a64a0/b53b264af88c409aa644ac99bd285ce2/FLAG5690c0c36 [2024-06-04 15:21:39,440 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd9a64a0/b53b264af88c409aa644ac99bd285ce2 [2024-06-04 15:21:39,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:21:39,442 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:21:39,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:21:39,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:21:39,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:21:39,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:21:38" (1/2) ... [2024-06-04 15:21:39,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618c5293 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:39, skipping insertion in model container [2024-06-04 15:21:39,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:21:38" (1/2) ... [2024-06-04 15:21:39,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58d4314e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:21:39, skipping insertion in model container [2024-06-04 15:21:39,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:21:39" (2/2) ... [2024-06-04 15:21:39,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618c5293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:39, skipping insertion in model container [2024-06-04 15:21:39,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:21:39" (2/2) ... [2024-06-04 15:21:39,458 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:21:39,562 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:21:39,564 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ((((((((((((((((((((! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) [2024-06-04 15:21:39,564 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((((! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) [2024-06-04 15:21:39,564 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ((((((((((((((((((((! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) [2024-06-04 15:21:39,564 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) [2024-06-04 15:21:39,565 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:21:39,575 INFO L106 edCorrectnessWitness]: ghost_update [L842-L842] multithreaded = 1; [2024-06-04 15:21:39,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:21:39,910 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:21:39,918 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:21:40,049 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:21:40,086 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:21:40,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40 WrapperNode [2024-06-04 15:21:40,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:21:40,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:21:40,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:21:40,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:21:40,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,144 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 156 [2024-06-04 15:21:40,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:21:40,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:21:40,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:21:40,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:21:40,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,158 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,173 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 15:21:40,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:21:40,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:21:40,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:21:40,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:21:40,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (1/1) ... [2024-06-04 15:21:40,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:21:40,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:21:40,271 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 15:21:40,308 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 15:21:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:21:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:21:40,321 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:21:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:21:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:21:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:21:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 15:21:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 15:21:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-04 15:21:40,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-04 15:21:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:21:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:21:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:21:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:21:40,325 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 15:21:40,484 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:21:40,486 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:21:40,787 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:21:40,787 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:21:40,955 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:21:40,955 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:21:40,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:21:40 BoogieIcfgContainer [2024-06-04 15:21:40,956 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:21:40,958 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:21:40,958 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:21:40,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:21:40,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:21:38" (1/4) ... [2024-06-04 15:21:40,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1113f51d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:21:40, skipping insertion in model container [2024-06-04 15:21:40,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:21:39" (2/4) ... [2024-06-04 15:21:40,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1113f51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:21:40, skipping insertion in model container [2024-06-04 15:21:40,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:21:40" (3/4) ... [2024-06-04 15:21:40,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1113f51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:21:40, skipping insertion in model container [2024-06-04 15:21:40,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:21:40" (4/4) ... [2024-06-04 15:21:40,964 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053_tso.oepc.i [2024-06-04 15:21:40,978 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:21:40,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-04 15:21:40,978 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:21:41,027 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:21:41,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-04 15:21:41,088 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-04 15:21:41,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:21:41,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:21:41,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-04 15:21:41,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-04 15:21:41,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:21:41,111 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;@481c3263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:21:41,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-04 15:21:41,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:21:41,116 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:21:41,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:21:41,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:41,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:21:41,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:21:41,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash -830355827, now seen corresponding path program 1 times [2024-06-04 15:21:41,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:41,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754232901] [2024-06-04 15:21:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:41,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:42,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:42,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:42,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754232901] [2024-06-04 15:21:42,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754232901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:42,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:42,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:21:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982018930] [2024-06-04 15:21:42,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:42,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:21:42,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:42,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:21:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:21:42,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-04 15:21:42,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:42,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:42,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-04 15:21:42,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:43,678 INFO L124 PetriNetUnfolderBase]: 8188/11557 cut-off events. [2024-06-04 15:21:43,679 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-06-04 15:21:43,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23112 conditions, 11557 events. 8188/11557 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 63692 event pairs, 6210 based on Foata normal form. 1/11372 useless extension candidates. Maximal degree in co-relation 23096. Up to 11164 conditions per place. [2024-06-04 15:21:43,748 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 44 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-04 15:21:43,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 231 flow [2024-06-04 15:21:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:21:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:21:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-04 15:21:43,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-06-04 15:21:43,759 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 92 transitions. [2024-06-04 15:21:43,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 231 flow [2024-06-04 15:21:43,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 15:21:43,763 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-04 15:21:43,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-04 15:21:43,768 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-04 15:21:43,768 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-04 15:21:43,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:43,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:43,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:43,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:21:43,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:21:43,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:43,769 INFO L85 PathProgramCache]: Analyzing trace with hash 892022444, now seen corresponding path program 1 times [2024-06-04 15:21:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:43,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631803124] [2024-06-04 15:21:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:43,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:44,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:44,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631803124] [2024-06-04 15:21:44,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631803124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:44,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:44,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:21:44,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229573366] [2024-06-04 15:21:44,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:44,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:21:44,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:44,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:21:44,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:21:44,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-04 15:21:44,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:44,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:44,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-04 15:21:44,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:45,876 INFO L124 PetriNetUnfolderBase]: 9573/13148 cut-off events. [2024-06-04 15:21:45,876 INFO L125 PetriNetUnfolderBase]: For 2477/2477 co-relation queries the response was YES. [2024-06-04 15:21:45,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29988 conditions, 13148 events. 9573/13148 cut-off events. For 2477/2477 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 69559 event pairs, 6546 based on Foata normal form. 4/13149 useless extension candidates. Maximal degree in co-relation 29973. Up to 12974 conditions per place. [2024-06-04 15:21:45,948 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 55 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-04 15:21:45,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 325 flow [2024-06-04 15:21:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:21:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:21:45,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-04 15:21:45,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-06-04 15:21:45,950 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 116 transitions. [2024-06-04 15:21:45,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 325 flow [2024-06-04 15:21:45,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:21:45,952 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-04 15:21:45,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-04 15:21:45,953 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-04 15:21:45,953 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-04 15:21:45,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:45,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:45,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:45,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:21:45,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:21:45,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1882893772, now seen corresponding path program 1 times [2024-06-04 15:21:45,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:45,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401238653] [2024-06-04 15:21:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:45,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:46,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401238653] [2024-06-04 15:21:46,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401238653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:46,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:46,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:21:46,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879655141] [2024-06-04 15:21:46,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:46,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:21:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:46,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:21:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:21:46,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-04 15:21:46,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:46,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:46,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-04 15:21:46,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:48,301 INFO L124 PetriNetUnfolderBase]: 9591/13188 cut-off events. [2024-06-04 15:21:48,301 INFO L125 PetriNetUnfolderBase]: For 7232/7232 co-relation queries the response was YES. [2024-06-04 15:21:48,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33499 conditions, 13188 events. 9591/13188 cut-off events. For 7232/7232 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 69888 event pairs, 5218 based on Foata normal form. 7/13190 useless extension candidates. Maximal degree in co-relation 33482. Up to 12895 conditions per place. [2024-06-04 15:21:48,364 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 73 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2024-06-04 15:21:48,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 541 flow [2024-06-04 15:21:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:21:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:21:48,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-06-04 15:21:48,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2024-06-04 15:21:48,369 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 152 transitions. [2024-06-04 15:21:48,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 541 flow [2024-06-04 15:21:48,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 522 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 15:21:48,375 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 310 flow [2024-06-04 15:21:48,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-04 15:21:48,376 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-04 15:21:48,376 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 310 flow [2024-06-04 15:21:48,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:48,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:48,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:48,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:21:48,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:21:48,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:48,377 INFO L85 PathProgramCache]: Analyzing trace with hash 417298981, now seen corresponding path program 1 times [2024-06-04 15:21:48,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:48,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917411579] [2024-06-04 15:21:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:48,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:49,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:49,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917411579] [2024-06-04 15:21:49,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917411579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:49,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:49,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:21:49,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341982446] [2024-06-04 15:21:49,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:49,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:21:49,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:49,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:21:49,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:21:49,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-04 15:21:49,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 310 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 15:21:49,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:49,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-04 15:21:49,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:50,508 INFO L124 PetriNetUnfolderBase]: 9620/13235 cut-off events. [2024-06-04 15:21:50,508 INFO L125 PetriNetUnfolderBase]: For 17241/17247 co-relation queries the response was YES. [2024-06-04 15:21:50,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39129 conditions, 13235 events. 9620/13235 cut-off events. For 17241/17247 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 70294 event pairs, 4299 based on Foata normal form. 18/13248 useless extension candidates. Maximal degree in co-relation 39109. Up to 12860 conditions per place. [2024-06-04 15:21:50,601 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 80 selfloop transitions, 25 changer transitions 0/111 dead transitions. [2024-06-04 15:21:50,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 111 transitions, 686 flow [2024-06-04 15:21:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:21:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:21:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-04 15:21:50,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608974358974359 [2024-06-04 15:21:50,604 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 310 flow. Second operand 6 states and 175 transitions. [2024-06-04 15:21:50,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 111 transitions, 686 flow [2024-06-04 15:21:50,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 111 transitions, 674 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-04 15:21:50,612 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 387 flow [2024-06-04 15:21:50,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-06-04 15:21:50,612 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-04 15:21:50,613 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 387 flow [2024-06-04 15:21:50,613 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 15:21:50,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:50,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:50,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:21:50,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:21:50,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:50,614 INFO L85 PathProgramCache]: Analyzing trace with hash 74669282, now seen corresponding path program 1 times [2024-06-04 15:21:50,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:50,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542560683] [2024-06-04 15:21:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:50,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:51,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:51,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542560683] [2024-06-04 15:21:51,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542560683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:51,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:51,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:21:51,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931697461] [2024-06-04 15:21:51,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:51,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:21:51,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:51,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:21:51,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:21:51,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-04 15:21:51,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 387 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 15:21:51,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:51,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-04 15:21:51,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:52,907 INFO L124 PetriNetUnfolderBase]: 8216/11595 cut-off events. [2024-06-04 15:21:52,908 INFO L125 PetriNetUnfolderBase]: For 21841/21841 co-relation queries the response was YES. [2024-06-04 15:21:52,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37158 conditions, 11595 events. 8216/11595 cut-off events. For 21841/21841 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 63870 event pairs, 4302 based on Foata normal form. 3/11595 useless extension candidates. Maximal degree in co-relation 37135. Up to 11191 conditions per place. [2024-06-04 15:21:52,988 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 67 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-04 15:21:52,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 585 flow [2024-06-04 15:21:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:21:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:21:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-04 15:21:52,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-04 15:21:52,992 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 387 flow. Second operand 5 states and 122 transitions. [2024-06-04 15:21:52,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 585 flow [2024-06-04 15:21:53,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 516 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 15:21:53,003 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 349 flow [2024-06-04 15:21:53,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=349, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-04 15:21:53,009 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-04 15:21:53,009 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 349 flow [2024-06-04 15:21:53,009 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 15:21:53,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:53,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:53,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:21:53,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:21:53,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:53,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1980506154, now seen corresponding path program 1 times [2024-06-04 15:21:53,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:53,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773368917] [2024-06-04 15:21:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:53,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:53,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:53,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773368917] [2024-06-04 15:21:53,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773368917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:53,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:53,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:21:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32019697] [2024-06-04 15:21:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:21:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:21:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:21:53,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-04 15:21:53,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 349 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:53,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:53,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-04 15:21:53,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:55,242 INFO L124 PetriNetUnfolderBase]: 8198/11635 cut-off events. [2024-06-04 15:21:55,242 INFO L125 PetriNetUnfolderBase]: For 25269/25269 co-relation queries the response was YES. [2024-06-04 15:21:55,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37684 conditions, 11635 events. 8198/11635 cut-off events. For 25269/25269 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 64530 event pairs, 4090 based on Foata normal form. 6/11638 useless extension candidates. Maximal degree in co-relation 37659. Up to 11137 conditions per place. [2024-06-04 15:21:55,315 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 75 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-04 15:21:55,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 619 flow [2024-06-04 15:21:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:21:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:21:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-04 15:21:55,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-04 15:21:55,319 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 349 flow. Second operand 6 states and 146 transitions. [2024-06-04 15:21:55,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 619 flow [2024-06-04 15:21:55,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 590 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 15:21:55,329 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 395 flow [2024-06-04 15:21:55,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=395, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-06-04 15:21:55,329 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-04 15:21:55,329 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 395 flow [2024-06-04 15:21:55,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:21:55,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:55,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:55,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:21:55,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:21:55,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:55,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1521219425, now seen corresponding path program 1 times [2024-06-04 15:21:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:55,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453838958] [2024-06-04 15:21:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:55,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:56,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453838958] [2024-06-04 15:21:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453838958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:56,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:56,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:21:56,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560281587] [2024-06-04 15:21:56,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:56,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:21:56,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:56,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:21:56,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:21:56,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:21:56,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 395 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 15:21:56,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:56,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:21:56,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:21:57,718 INFO L124 PetriNetUnfolderBase]: 9606/13256 cut-off events. [2024-06-04 15:21:57,718 INFO L125 PetriNetUnfolderBase]: For 40327/40339 co-relation queries the response was YES. [2024-06-04 15:21:57,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46542 conditions, 13256 events. 9606/13256 cut-off events. For 40327/40339 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 70482 event pairs, 4983 based on Foata normal form. 14/13265 useless extension candidates. Maximal degree in co-relation 46517. Up to 12914 conditions per place. [2024-06-04 15:21:57,796 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 74 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-04 15:21:57,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 105 transitions, 736 flow [2024-06-04 15:21:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:21:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:21:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-04 15:21:57,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-04 15:21:57,798 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 395 flow. Second operand 6 states and 150 transitions. [2024-06-04 15:21:57,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 105 transitions, 736 flow [2024-06-04 15:21:57,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 693 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-04 15:21:57,810 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 448 flow [2024-06-04 15:21:57,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2024-06-04 15:21:57,810 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-06-04 15:21:57,811 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 448 flow [2024-06-04 15:21:57,811 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 15:21:57,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:21:57,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:21:57,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:21:57,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:21:57,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:21:57,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1257131045, now seen corresponding path program 2 times [2024-06-04 15:21:57,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:21:57,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078001555] [2024-06-04 15:21:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:21:57,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:21:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:21:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:21:58,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:21:58,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078001555] [2024-06-04 15:21:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078001555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:21:58,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:21:58,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:21:58,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555844727] [2024-06-04 15:21:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:21:58,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:21:58,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:21:58,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:21:58,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:21:58,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:21:58,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 448 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 15:21:58,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:21:58,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:21:58,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:00,122 INFO L124 PetriNetUnfolderBase]: 9582/13208 cut-off events. [2024-06-04 15:22:00,123 INFO L125 PetriNetUnfolderBase]: For 47027/47027 co-relation queries the response was YES. [2024-06-04 15:22:00,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47484 conditions, 13208 events. 9582/13208 cut-off events. For 47027/47027 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 70039 event pairs, 5003 based on Foata normal form. 3/13199 useless extension candidates. Maximal degree in co-relation 47458. Up to 12884 conditions per place. [2024-06-04 15:22:00,190 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 67 selfloop transitions, 26 changer transitions 0/99 dead transitions. [2024-06-04 15:22:00,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 696 flow [2024-06-04 15:22:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:22:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:22:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-04 15:22:00,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2024-06-04 15:22:00,192 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 448 flow. Second operand 6 states and 145 transitions. [2024-06-04 15:22:00,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 696 flow [2024-06-04 15:22:00,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 99 transitions, 653 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 15:22:00,202 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 468 flow [2024-06-04 15:22:00,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=468, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-06-04 15:22:00,203 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-06-04 15:22:00,203 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 468 flow [2024-06-04 15:22:00,203 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 15:22:00,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:00,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:00,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:22:00,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:00,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1845267945, now seen corresponding path program 1 times [2024-06-04 15:22:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823415879] [2024-06-04 15:22:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:00,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:01,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:01,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823415879] [2024-06-04 15:22:01,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823415879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:01,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:01,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055768701] [2024-06-04 15:22:01,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:01,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:01,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:01,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:01,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:01,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:01,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 468 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 15:22:01,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:01,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:01,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:02,747 INFO L124 PetriNetUnfolderBase]: 9948/13710 cut-off events. [2024-06-04 15:22:02,747 INFO L125 PetriNetUnfolderBase]: For 57919/57928 co-relation queries the response was YES. [2024-06-04 15:22:02,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50876 conditions, 13710 events. 9948/13710 cut-off events. For 57919/57928 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 72708 event pairs, 4406 based on Foata normal form. 15/13718 useless extension candidates. Maximal degree in co-relation 50849. Up to 12950 conditions per place. [2024-06-04 15:22:02,812 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 104 selfloop transitions, 55 changer transitions 0/165 dead transitions. [2024-06-04 15:22:02,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 165 transitions, 1346 flow [2024-06-04 15:22:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-04 15:22:02,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 15:22:02,814 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 468 flow. Second operand 8 states and 208 transitions. [2024-06-04 15:22:02,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 165 transitions, 1346 flow [2024-06-04 15:22:02,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 165 transitions, 1183 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:02,836 INFO L231 Difference]: Finished difference. Result has 80 places, 108 transitions, 789 flow [2024-06-04 15:22:02,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=789, PETRI_PLACES=80, PETRI_TRANSITIONS=108} [2024-06-04 15:22:02,837 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-04 15:22:02,838 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 108 transitions, 789 flow [2024-06-04 15:22:02,838 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 15:22:02,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:02,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:02,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:22:02,838 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:02,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash 86839781, now seen corresponding path program 2 times [2024-06-04 15:22:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:02,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892499661] [2024-06-04 15:22:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:03,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:03,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892499661] [2024-06-04 15:22:03,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892499661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:03,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:03,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:03,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112353778] [2024-06-04 15:22:03,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:03,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:03,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:03,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:03,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:03,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 108 transitions, 789 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 15:22:03,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:03,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:03,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:05,528 INFO L124 PetriNetUnfolderBase]: 10108/13924 cut-off events. [2024-06-04 15:22:05,528 INFO L125 PetriNetUnfolderBase]: For 76363/76375 co-relation queries the response was YES. [2024-06-04 15:22:05,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56690 conditions, 13924 events. 10108/13924 cut-off events. For 76363/76375 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73755 event pairs, 4444 based on Foata normal form. 26/13943 useless extension candidates. Maximal degree in co-relation 56659. Up to 13062 conditions per place. [2024-06-04 15:22:05,629 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 90 selfloop transitions, 65 changer transitions 0/161 dead transitions. [2024-06-04 15:22:05,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 161 transitions, 1397 flow [2024-06-04 15:22:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-04 15:22:05,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489010989010989 [2024-06-04 15:22:05,632 INFO L175 Difference]: Start difference. First operand has 80 places, 108 transitions, 789 flow. Second operand 7 states and 178 transitions. [2024-06-04 15:22:05,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 161 transitions, 1397 flow [2024-06-04 15:22:05,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 161 transitions, 1356 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-04 15:22:05,683 INFO L231 Difference]: Finished difference. Result has 85 places, 117 transitions, 998 flow [2024-06-04 15:22:05,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=998, PETRI_PLACES=85, PETRI_TRANSITIONS=117} [2024-06-04 15:22:05,685 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-04 15:22:05,685 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 117 transitions, 998 flow [2024-06-04 15:22:05,685 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 15:22:05,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:05,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:05,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:22:05,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:05,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash -319036221, now seen corresponding path program 3 times [2024-06-04 15:22:05,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:05,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451670648] [2024-06-04 15:22:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:05,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:06,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:06,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451670648] [2024-06-04 15:22:06,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451670648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:06,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:06,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:06,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877587719] [2024-06-04 15:22:06,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:06,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:06,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:06,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:06,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:06,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:06,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 117 transitions, 998 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 15:22:06,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:06,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:06,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:08,270 INFO L124 PetriNetUnfolderBase]: 10188/14046 cut-off events. [2024-06-04 15:22:08,270 INFO L125 PetriNetUnfolderBase]: For 90109/90113 co-relation queries the response was YES. [2024-06-04 15:22:08,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59796 conditions, 14046 events. 10188/14046 cut-off events. For 90109/90113 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 74313 event pairs, 4442 based on Foata normal form. 12/14033 useless extension candidates. Maximal degree in co-relation 59763. Up to 13104 conditions per place. [2024-06-04 15:22:08,381 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 91 selfloop transitions, 79 changer transitions 0/176 dead transitions. [2024-06-04 15:22:08,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 176 transitions, 1796 flow [2024-06-04 15:22:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-04 15:22:08,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2024-06-04 15:22:08,383 INFO L175 Difference]: Start difference. First operand has 85 places, 117 transitions, 998 flow. Second operand 7 states and 180 transitions. [2024-06-04 15:22:08,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 176 transitions, 1796 flow [2024-06-04 15:22:08,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 176 transitions, 1627 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-04 15:22:08,452 INFO L231 Difference]: Finished difference. Result has 88 places, 131 transitions, 1207 flow [2024-06-04 15:22:08,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1207, PETRI_PLACES=88, PETRI_TRANSITIONS=131} [2024-06-04 15:22:08,453 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-04 15:22:08,453 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 131 transitions, 1207 flow [2024-06-04 15:22:08,453 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 15:22:08,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:08,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:08,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:22:08,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:08,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash 263977811, now seen corresponding path program 4 times [2024-06-04 15:22:08,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:08,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708091697] [2024-06-04 15:22:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:09,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:09,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708091697] [2024-06-04 15:22:09,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708091697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:09,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:09,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:09,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681038306] [2024-06-04 15:22:09,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:09,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:09,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:09,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:09,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:09,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 131 transitions, 1207 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 15:22:09,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:09,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:09,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:11,076 INFO L124 PetriNetUnfolderBase]: 10156/13997 cut-off events. [2024-06-04 15:22:11,077 INFO L125 PetriNetUnfolderBase]: For 90566/90576 co-relation queries the response was YES. [2024-06-04 15:22:11,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59254 conditions, 13997 events. 10156/13997 cut-off events. For 90566/90576 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 74069 event pairs, 4418 based on Foata normal form. 18/13990 useless extension candidates. Maximal degree in co-relation 59220. Up to 13087 conditions per place. [2024-06-04 15:22:11,179 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 86 selfloop transitions, 81 changer transitions 0/173 dead transitions. [2024-06-04 15:22:11,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 173 transitions, 1743 flow [2024-06-04 15:22:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-04 15:22:11,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-04 15:22:11,181 INFO L175 Difference]: Start difference. First operand has 88 places, 131 transitions, 1207 flow. Second operand 7 states and 176 transitions. [2024-06-04 15:22:11,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 173 transitions, 1743 flow [2024-06-04 15:22:11,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 173 transitions, 1612 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-04 15:22:11,277 INFO L231 Difference]: Finished difference. Result has 93 places, 131 transitions, 1252 flow [2024-06-04 15:22:11,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1252, PETRI_PLACES=93, PETRI_TRANSITIONS=131} [2024-06-04 15:22:11,278 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-04 15:22:11,278 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 131 transitions, 1252 flow [2024-06-04 15:22:11,279 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 15:22:11,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:11,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:11,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:22:11,279 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:11,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:11,279 INFO L85 PathProgramCache]: Analyzing trace with hash 264217379, now seen corresponding path program 1 times [2024-06-04 15:22:11,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:11,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246174796] [2024-06-04 15:22:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:11,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246174796] [2024-06-04 15:22:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246174796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:22:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876925614] [2024-06-04 15:22:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:12,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:22:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:22:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:22:12,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-04 15:22:12,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 131 transitions, 1252 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:12,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:12,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-04 15:22:12,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:14,379 INFO L124 PetriNetUnfolderBase]: 8746/12325 cut-off events. [2024-06-04 15:22:14,379 INFO L125 PetriNetUnfolderBase]: For 85144/85146 co-relation queries the response was YES. [2024-06-04 15:22:14,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52921 conditions, 12325 events. 8746/12325 cut-off events. For 85144/85146 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 67578 event pairs, 3813 based on Foata normal form. 6/12328 useless extension candidates. Maximal degree in co-relation 52884. Up to 11846 conditions per place. [2024-06-04 15:22:14,481 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 143 selfloop transitions, 17 changer transitions 0/167 dead transitions. [2024-06-04 15:22:14,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 167 transitions, 1710 flow [2024-06-04 15:22:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-04 15:22:14,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 15:22:14,482 INFO L175 Difference]: Start difference. First operand has 93 places, 131 transitions, 1252 flow. Second operand 7 states and 169 transitions. [2024-06-04 15:22:14,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 167 transitions, 1710 flow [2024-06-04 15:22:14,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 167 transitions, 1503 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:22:14,557 INFO L231 Difference]: Finished difference. Result has 93 places, 134 transitions, 1131 flow [2024-06-04 15:22:14,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1131, PETRI_PLACES=93, PETRI_TRANSITIONS=134} [2024-06-04 15:22:14,557 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-04 15:22:14,557 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 134 transitions, 1131 flow [2024-06-04 15:22:14,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:14,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:14,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:14,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:22:14,558 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:14,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash -862407015, now seen corresponding path program 1 times [2024-06-04 15:22:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:14,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748179193] [2024-06-04 15:22:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:14,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:15,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:15,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748179193] [2024-06-04 15:22:15,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748179193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:15,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:15,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:22:15,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718380358] [2024-06-04 15:22:15,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:15,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:22:15,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:22:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:22:15,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-04 15:22:15,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 1131 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:15,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:15,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-04 15:22:15,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:16,623 INFO L124 PetriNetUnfolderBase]: 8739/12561 cut-off events. [2024-06-04 15:22:16,623 INFO L125 PetriNetUnfolderBase]: For 94858/94860 co-relation queries the response was YES. [2024-06-04 15:22:16,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54448 conditions, 12561 events. 8739/12561 cut-off events. For 94858/94860 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 70314 event pairs, 3988 based on Foata normal form. 2/12560 useless extension candidates. Maximal degree in co-relation 54411. Up to 11903 conditions per place. [2024-06-04 15:22:16,718 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 135 selfloop transitions, 10 changer transitions 0/152 dead transitions. [2024-06-04 15:22:16,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 152 transitions, 1503 flow [2024-06-04 15:22:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:22:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:22:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-04 15:22:16,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2024-06-04 15:22:16,719 INFO L175 Difference]: Start difference. First operand has 93 places, 134 transitions, 1131 flow. Second operand 5 states and 118 transitions. [2024-06-04 15:22:16,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 152 transitions, 1503 flow [2024-06-04 15:22:16,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 152 transitions, 1443 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 15:22:16,797 INFO L231 Difference]: Finished difference. Result has 93 places, 138 transitions, 1146 flow [2024-06-04 15:22:16,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1146, PETRI_PLACES=93, PETRI_TRANSITIONS=138} [2024-06-04 15:22:16,797 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-04 15:22:16,797 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 138 transitions, 1146 flow [2024-06-04 15:22:16,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:16,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:16,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:16,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:22:16,798 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:16,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:16,798 INFO L85 PathProgramCache]: Analyzing trace with hash 841445849, now seen corresponding path program 1 times [2024-06-04 15:22:16,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:16,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199742924] [2024-06-04 15:22:16,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:16,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:17,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:17,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199742924] [2024-06-04 15:22:17,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199742924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:17,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:17,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:17,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747562985] [2024-06-04 15:22:17,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:17,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:17,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:17,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:17,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:17,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 138 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:17,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:17,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:17,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:19,337 INFO L124 PetriNetUnfolderBase]: 10222/14133 cut-off events. [2024-06-04 15:22:19,338 INFO L125 PetriNetUnfolderBase]: For 130598/130621 co-relation queries the response was YES. [2024-06-04 15:22:19,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65284 conditions, 14133 events. 10222/14133 cut-off events. For 130598/130621 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 74894 event pairs, 4407 based on Foata normal form. 30/14156 useless extension candidates. Maximal degree in co-relation 65246. Up to 13133 conditions per place. [2024-06-04 15:22:19,445 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 101 selfloop transitions, 86 changer transitions 0/193 dead transitions. [2024-06-04 15:22:19,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 193 transitions, 1862 flow [2024-06-04 15:22:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-04 15:22:19,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 15:22:19,447 INFO L175 Difference]: Start difference. First operand has 93 places, 138 transitions, 1146 flow. Second operand 7 states and 182 transitions. [2024-06-04 15:22:19,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 193 transitions, 1862 flow [2024-06-04 15:22:19,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 193 transitions, 1817 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-04 15:22:19,527 INFO L231 Difference]: Finished difference. Result has 97 places, 146 transitions, 1400 flow [2024-06-04 15:22:19,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1400, PETRI_PLACES=97, PETRI_TRANSITIONS=146} [2024-06-04 15:22:19,528 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-06-04 15:22:19,528 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 146 transitions, 1400 flow [2024-06-04 15:22:19,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:19,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:19,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:19,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:22:19,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:19,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:19,529 INFO L85 PathProgramCache]: Analyzing trace with hash -2070588919, now seen corresponding path program 2 times [2024-06-04 15:22:19,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:19,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936618668] [2024-06-04 15:22:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:19,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:20,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:20,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936618668] [2024-06-04 15:22:20,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936618668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:20,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:20,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:20,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112797352] [2024-06-04 15:22:20,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:20,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:20,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:20,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:20,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:20,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:20,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 146 transitions, 1400 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:20,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:20,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:20,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:22,183 INFO L124 PetriNetUnfolderBase]: 10298/14239 cut-off events. [2024-06-04 15:22:22,183 INFO L125 PetriNetUnfolderBase]: For 147603/147628 co-relation queries the response was YES. [2024-06-04 15:22:22,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67819 conditions, 14239 events. 10298/14239 cut-off events. For 147603/147628 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 75542 event pairs, 4379 based on Foata normal form. 30/14262 useless extension candidates. Maximal degree in co-relation 67780. Up to 13200 conditions per place. [2024-06-04 15:22:22,279 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 102 selfloop transitions, 90 changer transitions 0/198 dead transitions. [2024-06-04 15:22:22,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 198 transitions, 2136 flow [2024-06-04 15:22:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-04 15:22:22,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489010989010989 [2024-06-04 15:22:22,281 INFO L175 Difference]: Start difference. First operand has 97 places, 146 transitions, 1400 flow. Second operand 7 states and 178 transitions. [2024-06-04 15:22:22,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 198 transitions, 2136 flow [2024-06-04 15:22:22,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 198 transitions, 1832 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:22,393 INFO L231 Difference]: Finished difference. Result has 98 places, 154 transitions, 1421 flow [2024-06-04 15:22:22,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1421, PETRI_PLACES=98, PETRI_TRANSITIONS=154} [2024-06-04 15:22:22,393 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-04 15:22:22,393 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 154 transitions, 1421 flow [2024-06-04 15:22:22,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:22,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:22,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:22,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:22:22,394 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:22,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash 402536247, now seen corresponding path program 3 times [2024-06-04 15:22:22,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:22,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112813352] [2024-06-04 15:22:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:22,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:23,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112813352] [2024-06-04 15:22:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112813352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:23,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889771373] [2024-06-04 15:22:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:23,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:23,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:23,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 154 transitions, 1421 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:23,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:23,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:23,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:24,969 INFO L124 PetriNetUnfolderBase]: 10266/14201 cut-off events. [2024-06-04 15:22:24,969 INFO L125 PetriNetUnfolderBase]: For 158461/158509 co-relation queries the response was YES. [2024-06-04 15:22:25,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68229 conditions, 14201 events. 10266/14201 cut-off events. For 158461/158509 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 75384 event pairs, 4403 based on Foata normal form. 42/14212 useless extension candidates. Maximal degree in co-relation 68190. Up to 13173 conditions per place. [2024-06-04 15:22:25,081 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 99 selfloop transitions, 87 changer transitions 0/192 dead transitions. [2024-06-04 15:22:25,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 192 transitions, 1925 flow [2024-06-04 15:22:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:25,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-04 15:22:25,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46703296703296704 [2024-06-04 15:22:25,097 INFO L175 Difference]: Start difference. First operand has 98 places, 154 transitions, 1421 flow. Second operand 7 states and 170 transitions. [2024-06-04 15:22:25,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 192 transitions, 1925 flow [2024-06-04 15:22:25,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 192 transitions, 1716 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-04 15:22:25,228 INFO L231 Difference]: Finished difference. Result has 101 places, 154 transitions, 1401 flow [2024-06-04 15:22:25,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1401, PETRI_PLACES=101, PETRI_TRANSITIONS=154} [2024-06-04 15:22:25,229 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-04 15:22:25,229 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 154 transitions, 1401 flow [2024-06-04 15:22:25,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:25,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:25,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:25,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:22:25,230 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:25,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1672745784, now seen corresponding path program 1 times [2024-06-04 15:22:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:25,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890849294] [2024-06-04 15:22:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:25,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:26,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:26,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890849294] [2024-06-04 15:22:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890849294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:26,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:26,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:26,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732559574] [2024-06-04 15:22:26,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:26,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:26,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:26,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:26,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:26,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 154 transitions, 1401 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:26,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:26,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:26,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:27,755 INFO L124 PetriNetUnfolderBase]: 10302/14249 cut-off events. [2024-06-04 15:22:27,755 INFO L125 PetriNetUnfolderBase]: For 173746/173766 co-relation queries the response was YES. [2024-06-04 15:22:27,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69314 conditions, 14249 events. 10302/14249 cut-off events. For 173746/173766 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 75799 event pairs, 3806 based on Foata normal form. 22/14266 useless extension candidates. Maximal degree in co-relation 69274. Up to 13587 conditions per place. [2024-06-04 15:22:27,853 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 148 selfloop transitions, 46 changer transitions 0/200 dead transitions. [2024-06-04 15:22:27,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 200 transitions, 2089 flow [2024-06-04 15:22:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:27,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-04 15:22:27,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-06-04 15:22:27,855 INFO L175 Difference]: Start difference. First operand has 101 places, 154 transitions, 1401 flow. Second operand 7 states and 172 transitions. [2024-06-04 15:22:27,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 200 transitions, 2089 flow [2024-06-04 15:22:27,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 200 transitions, 1835 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:22:27,984 INFO L231 Difference]: Finished difference. Result has 101 places, 160 transitions, 1335 flow [2024-06-04 15:22:27,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1335, PETRI_PLACES=101, PETRI_TRANSITIONS=160} [2024-06-04 15:22:27,984 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-04 15:22:27,984 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 160 transitions, 1335 flow [2024-06-04 15:22:27,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:27,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:27,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:27,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:22:27,985 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:27,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:27,985 INFO L85 PathProgramCache]: Analyzing trace with hash 117989062, now seen corresponding path program 2 times [2024-06-04 15:22:27,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:27,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334704168] [2024-06-04 15:22:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:27,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:28,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334704168] [2024-06-04 15:22:28,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334704168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:28,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:28,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:28,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423226135] [2024-06-04 15:22:28,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:28,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:28,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:28,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:28,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 160 transitions, 1335 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:28,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:28,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:28,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:30,653 INFO L124 PetriNetUnfolderBase]: 10287/14223 cut-off events. [2024-06-04 15:22:30,653 INFO L125 PetriNetUnfolderBase]: For 193790/193802 co-relation queries the response was YES. [2024-06-04 15:22:30,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70990 conditions, 14223 events. 10287/14223 cut-off events. For 193790/193802 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 75526 event pairs, 4473 based on Foata normal form. 14/14232 useless extension candidates. Maximal degree in co-relation 70949. Up to 13702 conditions per place. [2024-06-04 15:22:30,768 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 147 selfloop transitions, 45 changer transitions 0/198 dead transitions. [2024-06-04 15:22:30,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 198 transitions, 1849 flow [2024-06-04 15:22:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-04 15:22:30,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 15:22:30,770 INFO L175 Difference]: Start difference. First operand has 101 places, 160 transitions, 1335 flow. Second operand 7 states and 169 transitions. [2024-06-04 15:22:30,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 198 transitions, 1849 flow [2024-06-04 15:22:30,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 198 transitions, 1748 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-04 15:22:30,909 INFO L231 Difference]: Finished difference. Result has 105 places, 160 transitions, 1336 flow [2024-06-04 15:22:30,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1336, PETRI_PLACES=105, PETRI_TRANSITIONS=160} [2024-06-04 15:22:30,910 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-04 15:22:30,910 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 160 transitions, 1336 flow [2024-06-04 15:22:30,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:22:30,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:30,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:30,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:22:30,910 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:30,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:30,911 INFO L85 PathProgramCache]: Analyzing trace with hash 236261440, now seen corresponding path program 1 times [2024-06-04 15:22:30,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:30,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499392228] [2024-06-04 15:22:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:30,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:32,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:32,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499392228] [2024-06-04 15:22:32,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499392228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:32,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:32,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:32,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104659395] [2024-06-04 15:22:32,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:32,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:32,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:32,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:32,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:32,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:32,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 160 transitions, 1336 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 15:22:32,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:32,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:32,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:34,313 INFO L124 PetriNetUnfolderBase]: 10487/14509 cut-off events. [2024-06-04 15:22:34,313 INFO L125 PetriNetUnfolderBase]: For 221378/221393 co-relation queries the response was YES. [2024-06-04 15:22:34,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73606 conditions, 14509 events. 10487/14509 cut-off events. For 221378/221393 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 77445 event pairs, 4088 based on Foata normal form. 44/14546 useless extension candidates. Maximal degree in co-relation 73563. Up to 13216 conditions per place. [2024-06-04 15:22:34,434 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 113 selfloop transitions, 96 changer transitions 0/215 dead transitions. [2024-06-04 15:22:34,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 215 transitions, 1974 flow [2024-06-04 15:22:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-04 15:22:34,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831730769230769 [2024-06-04 15:22:34,436 INFO L175 Difference]: Start difference. First operand has 105 places, 160 transitions, 1336 flow. Second operand 8 states and 201 transitions. [2024-06-04 15:22:34,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 215 transitions, 1974 flow [2024-06-04 15:22:34,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 215 transitions, 1872 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:34,630 INFO L231 Difference]: Finished difference. Result has 107 places, 163 transitions, 1493 flow [2024-06-04 15:22:34,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1493, PETRI_PLACES=107, PETRI_TRANSITIONS=163} [2024-06-04 15:22:34,631 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-06-04 15:22:34,631 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 163 transitions, 1493 flow [2024-06-04 15:22:34,631 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 15:22:34,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:34,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:34,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:22:34,632 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:34,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1324251262, now seen corresponding path program 1 times [2024-06-04 15:22:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:34,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438083636] [2024-06-04 15:22:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:35,407 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 15:22:35,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:35,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438083636] [2024-06-04 15:22:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438083636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:35,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:35,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:22:35,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663965782] [2024-06-04 15:22:35,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:35,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:22:35,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:35,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:22:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:22:35,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:35,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 163 transitions, 1493 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 15:22:35,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:35,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:35,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:37,018 INFO L124 PetriNetUnfolderBase]: 10503/14556 cut-off events. [2024-06-04 15:22:37,018 INFO L125 PetriNetUnfolderBase]: For 242320/242328 co-relation queries the response was YES. [2024-06-04 15:22:37,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76965 conditions, 14556 events. 10503/14556 cut-off events. For 242320/242328 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 77929 event pairs, 4466 based on Foata normal form. 10/14563 useless extension candidates. Maximal degree in co-relation 76921. Up to 14242 conditions per place. [2024-06-04 15:22:37,146 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 170 selfloop transitions, 17 changer transitions 0/193 dead transitions. [2024-06-04 15:22:37,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 193 transitions, 2005 flow [2024-06-04 15:22:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:22:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:22:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-04 15:22:37,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-04 15:22:37,147 INFO L175 Difference]: Start difference. First operand has 107 places, 163 transitions, 1493 flow. Second operand 6 states and 139 transitions. [2024-06-04 15:22:37,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 193 transitions, 2005 flow [2024-06-04 15:22:37,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 193 transitions, 1794 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:37,337 INFO L231 Difference]: Finished difference. Result has 107 places, 167 transitions, 1382 flow [2024-06-04 15:22:37,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1382, PETRI_PLACES=107, PETRI_TRANSITIONS=167} [2024-06-04 15:22:37,337 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-06-04 15:22:37,337 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 167 transitions, 1382 flow [2024-06-04 15:22:37,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 15:22:37,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:37,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:22:37,338 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:37,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:37,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1386305740, now seen corresponding path program 2 times [2024-06-04 15:22:37,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:37,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783244029] [2024-06-04 15:22:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:37,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:38,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783244029] [2024-06-04 15:22:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783244029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:38,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993080387] [2024-06-04 15:22:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:38,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:38,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:38,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 167 transitions, 1382 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 15:22:38,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:38,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:38,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:40,632 INFO L124 PetriNetUnfolderBase]: 10539/14567 cut-off events. [2024-06-04 15:22:40,632 INFO L125 PetriNetUnfolderBase]: For 265188/265196 co-relation queries the response was YES. [2024-06-04 15:22:40,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79220 conditions, 14567 events. 10539/14567 cut-off events. For 265188/265196 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 77448 event pairs, 4102 based on Foata normal form. 12/14542 useless extension candidates. Maximal degree in co-relation 79175. Up to 13537 conditions per place. [2024-06-04 15:22:40,766 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 111 selfloop transitions, 100 changer transitions 0/217 dead transitions. [2024-06-04 15:22:40,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 217 transitions, 2020 flow [2024-06-04 15:22:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:40,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-04 15:22:40,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-04 15:22:40,768 INFO L175 Difference]: Start difference. First operand has 107 places, 167 transitions, 1382 flow. Second operand 8 states and 195 transitions. [2024-06-04 15:22:40,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 217 transitions, 2020 flow [2024-06-04 15:22:40,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 217 transitions, 1952 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-04 15:22:40,990 INFO L231 Difference]: Finished difference. Result has 111 places, 170 transitions, 1587 flow [2024-06-04 15:22:40,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1587, PETRI_PLACES=111, PETRI_TRANSITIONS=170} [2024-06-04 15:22:40,990 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-04 15:22:40,991 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 170 transitions, 1587 flow [2024-06-04 15:22:40,991 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 15:22:40,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:40,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:40,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:22:40,991 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:40,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash 509877250, now seen corresponding path program 3 times [2024-06-04 15:22:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:40,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285004225] [2024-06-04 15:22:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:42,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:42,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285004225] [2024-06-04 15:22:42,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285004225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:42,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:42,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:42,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313618748] [2024-06-04 15:22:42,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:42,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:42,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:42,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:42,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:42,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:42,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 170 transitions, 1587 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 15:22:42,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:42,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:42,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:44,148 INFO L124 PetriNetUnfolderBase]: 10575/14619 cut-off events. [2024-06-04 15:22:44,148 INFO L125 PetriNetUnfolderBase]: For 297355/297363 co-relation queries the response was YES. [2024-06-04 15:22:44,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83007 conditions, 14619 events. 10575/14619 cut-off events. For 297355/297363 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 77606 event pairs, 3799 based on Foata normal form. 12/14594 useless extension candidates. Maximal degree in co-relation 82961. Up to 13192 conditions per place. [2024-06-04 15:22:44,431 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 112 selfloop transitions, 111 changer transitions 0/229 dead transitions. [2024-06-04 15:22:44,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 229 transitions, 2453 flow [2024-06-04 15:22:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:44,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-04 15:22:44,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855769230769231 [2024-06-04 15:22:44,432 INFO L175 Difference]: Start difference. First operand has 111 places, 170 transitions, 1587 flow. Second operand 8 states and 202 transitions. [2024-06-04 15:22:44,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 229 transitions, 2453 flow [2024-06-04 15:22:44,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 229 transitions, 2208 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-04 15:22:44,632 INFO L231 Difference]: Finished difference. Result has 113 places, 176 transitions, 1704 flow [2024-06-04 15:22:44,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1704, PETRI_PLACES=113, PETRI_TRANSITIONS=176} [2024-06-04 15:22:44,633 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-04 15:22:44,633 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 176 transitions, 1704 flow [2024-06-04 15:22:44,633 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 15:22:44,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:44,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:44,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:22:44,633 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:44,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1614206890, now seen corresponding path program 4 times [2024-06-04 15:22:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:44,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181319658] [2024-06-04 15:22:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:44,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:45,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:45,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181319658] [2024-06-04 15:22:45,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181319658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:45,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:45,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:22:45,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267373112] [2024-06-04 15:22:45,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:45,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:22:45,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:45,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:22:45,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:22:45,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:45,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 176 transitions, 1704 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 15:22:45,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:45,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:45,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:48,019 INFO L124 PetriNetUnfolderBase]: 10560/14618 cut-off events. [2024-06-04 15:22:48,020 INFO L125 PetriNetUnfolderBase]: For 327230/327234 co-relation queries the response was YES. [2024-06-04 15:22:48,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85311 conditions, 14618 events. 10560/14618 cut-off events. For 327230/327234 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 77871 event pairs, 4123 based on Foata normal form. 8/14589 useless extension candidates. Maximal degree in co-relation 85264. Up to 13568 conditions per place. [2024-06-04 15:22:48,141 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 119 selfloop transitions, 98 changer transitions 0/223 dead transitions. [2024-06-04 15:22:48,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 223 transitions, 2296 flow [2024-06-04 15:22:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:22:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:22:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-04 15:22:48,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-04 15:22:48,144 INFO L175 Difference]: Start difference. First operand has 113 places, 176 transitions, 1704 flow. Second operand 8 states and 196 transitions. [2024-06-04 15:22:48,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 223 transitions, 2296 flow [2024-06-04 15:22:48,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 223 transitions, 2018 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-04 15:22:48,408 INFO L231 Difference]: Finished difference. Result has 116 places, 176 transitions, 1633 flow [2024-06-04 15:22:48,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1633, PETRI_PLACES=116, PETRI_TRANSITIONS=176} [2024-06-04 15:22:48,408 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-06-04 15:22:48,408 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 176 transitions, 1633 flow [2024-06-04 15:22:48,409 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 15:22:48,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:48,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:48,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:22:48,409 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:48,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:48,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1312823422, now seen corresponding path program 2 times [2024-06-04 15:22:48,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:48,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393168037] [2024-06-04 15:22:48,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:48,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:49,198 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 15:22:49,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:49,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393168037] [2024-06-04 15:22:49,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393168037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:49,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:49,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:22:49,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598083201] [2024-06-04 15:22:49,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:49,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:22:49,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:49,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:22:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:22:49,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:49,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 176 transitions, 1633 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 15:22:49,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:49,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:49,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:50,962 INFO L124 PetriNetUnfolderBase]: 10553/14648 cut-off events. [2024-06-04 15:22:50,963 INFO L125 PetriNetUnfolderBase]: For 342030/342054 co-relation queries the response was YES. [2024-06-04 15:22:51,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85306 conditions, 14648 events. 10553/14648 cut-off events. For 342030/342054 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 78573 event pairs, 4457 based on Foata normal form. 18/14657 useless extension candidates. Maximal degree in co-relation 85258. Up to 14298 conditions per place. [2024-06-04 15:22:51,082 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 171 selfloop transitions, 24 changer transitions 0/201 dead transitions. [2024-06-04 15:22:51,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 201 transitions, 2159 flow [2024-06-04 15:22:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:22:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:22:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-04 15:22:51,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-06-04 15:22:51,083 INFO L175 Difference]: Start difference. First operand has 116 places, 176 transitions, 1633 flow. Second operand 6 states and 135 transitions. [2024-06-04 15:22:51,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 201 transitions, 2159 flow [2024-06-04 15:22:51,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 201 transitions, 1917 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:22:51,382 INFO L231 Difference]: Finished difference. Result has 115 places, 180 transitions, 1518 flow [2024-06-04 15:22:51,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1518, PETRI_PLACES=115, PETRI_TRANSITIONS=180} [2024-06-04 15:22:51,383 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-04 15:22:51,383 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 180 transitions, 1518 flow [2024-06-04 15:22:51,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 15:22:51,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:51,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:51,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:22:51,383 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:51,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1318531390, now seen corresponding path program 1 times [2024-06-04 15:22:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:51,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135419456] [2024-06-04 15:22:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:52,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:52,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135419456] [2024-06-04 15:22:52,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135419456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:52,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:52,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:22:52,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212971351] [2024-06-04 15:22:52,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:52,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:22:52,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:52,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:22:52,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:22:52,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-04 15:22:52,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 180 transitions, 1518 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 15:22:52,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:52,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-04 15:22:52,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:53,805 INFO L124 PetriNetUnfolderBase]: 9174/13152 cut-off events. [2024-06-04 15:22:53,806 INFO L125 PetriNetUnfolderBase]: For 312341/312343 co-relation queries the response was YES. [2024-06-04 15:22:53,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77194 conditions, 13152 events. 9174/13152 cut-off events. For 312341/312343 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 73556 event pairs, 3774 based on Foata normal form. 2/13151 useless extension candidates. Maximal degree in co-relation 77145. Up to 12511 conditions per place. [2024-06-04 15:22:53,918 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 184 selfloop transitions, 14 changer transitions 0/205 dead transitions. [2024-06-04 15:22:53,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 205 transitions, 2038 flow [2024-06-04 15:22:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:22:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:22:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-04 15:22:53,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-04 15:22:53,919 INFO L175 Difference]: Start difference. First operand has 115 places, 180 transitions, 1518 flow. Second operand 6 states and 141 transitions. [2024-06-04 15:22:53,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 205 transitions, 2038 flow [2024-06-04 15:22:54,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 205 transitions, 1941 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-04 15:22:54,192 INFO L231 Difference]: Finished difference. Result has 117 places, 184 transitions, 1524 flow [2024-06-04 15:22:54,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1524, PETRI_PLACES=117, PETRI_TRANSITIONS=184} [2024-06-04 15:22:54,192 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-04 15:22:54,192 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 184 transitions, 1524 flow [2024-06-04 15:22:54,192 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 15:22:54,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:54,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:54,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:22:54,193 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:54,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1312817470, now seen corresponding path program 2 times [2024-06-04 15:22:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:54,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317684045] [2024-06-04 15:22:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:54,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:54,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:54,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317684045] [2024-06-04 15:22:54,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317684045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:54,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:22:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330259069] [2024-06-04 15:22:54,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:54,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:22:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:22:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:22:55,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-04 15:22:55,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 184 transitions, 1524 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 15:22:55,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:55,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-04 15:22:55,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:56,549 INFO L124 PetriNetUnfolderBase]: 9167/13163 cut-off events. [2024-06-04 15:22:56,550 INFO L125 PetriNetUnfolderBase]: For 335507/335515 co-relation queries the response was YES. [2024-06-04 15:22:56,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79737 conditions, 13163 events. 9167/13163 cut-off events. For 335507/335515 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 73912 event pairs, 3775 based on Foata normal form. 6/13164 useless extension candidates. Maximal degree in co-relation 79687. Up to 12484 conditions per place. [2024-06-04 15:22:56,659 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 178 selfloop transitions, 21 changer transitions 0/206 dead transitions. [2024-06-04 15:22:56,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 206 transitions, 2044 flow [2024-06-04 15:22:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:22:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:22:56,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-04 15:22:56,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-04 15:22:56,660 INFO L175 Difference]: Start difference. First operand has 117 places, 184 transitions, 1524 flow. Second operand 6 states and 140 transitions. [2024-06-04 15:22:56,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 206 transitions, 2044 flow [2024-06-04 15:22:56,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 206 transitions, 1971 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-04 15:22:56,948 INFO L231 Difference]: Finished difference. Result has 119 places, 188 transitions, 1576 flow [2024-06-04 15:22:56,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1576, PETRI_PLACES=119, PETRI_TRANSITIONS=188} [2024-06-04 15:22:56,948 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-04 15:22:56,949 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 188 transitions, 1576 flow [2024-06-04 15:22:56,949 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 15:22:56,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:22:56,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:22:56,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:22:56,949 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:22:56,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:22:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1312809534, now seen corresponding path program 1 times [2024-06-04 15:22:56,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:22:56,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230437598] [2024-06-04 15:22:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:22:56,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:22:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:22:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:22:57,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:22:57,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230437598] [2024-06-04 15:22:57,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230437598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:22:57,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:22:57,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:22:57,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108081090] [2024-06-04 15:22:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:22:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:22:57,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:22:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:22:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:22:58,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:22:58,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 188 transitions, 1576 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 15:22:58,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:22:58,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:22:58,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:22:59,760 INFO L124 PetriNetUnfolderBase]: 10882/15358 cut-off events. [2024-06-04 15:22:59,760 INFO L125 PetriNetUnfolderBase]: For 432218/432220 co-relation queries the response was YES. [2024-06-04 15:22:59,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95791 conditions, 15358 events. 10882/15358 cut-off events. For 432218/432220 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 84333 event pairs, 4596 based on Foata normal form. 2/15357 useless extension candidates. Maximal degree in co-relation 95740. Up to 14786 conditions per place. [2024-06-04 15:22:59,894 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 194 selfloop transitions, 18 changer transitions 0/218 dead transitions. [2024-06-04 15:22:59,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 218 transitions, 2159 flow [2024-06-04 15:22:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:22:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:22:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-04 15:22:59,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-06-04 15:22:59,895 INFO L175 Difference]: Start difference. First operand has 119 places, 188 transitions, 1576 flow. Second operand 7 states and 152 transitions. [2024-06-04 15:22:59,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 218 transitions, 2159 flow [2024-06-04 15:23:00,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 218 transitions, 2059 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-04 15:23:00,340 INFO L231 Difference]: Finished difference. Result has 123 places, 196 transitions, 1627 flow [2024-06-04 15:23:00,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1627, PETRI_PLACES=123, PETRI_TRANSITIONS=196} [2024-06-04 15:23:00,340 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-04 15:23:00,340 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 196 transitions, 1627 flow [2024-06-04 15:23:00,341 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 15:23:00,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:00,341 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 15:23:00,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:23:00,341 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:23:00,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:00,341 INFO L85 PathProgramCache]: Analyzing trace with hash -639178624, now seen corresponding path program 1 times [2024-06-04 15:23:00,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:00,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368479578] [2024-06-04 15:23:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:00,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:01,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:01,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368479578] [2024-06-04 15:23:01,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368479578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:01,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:01,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:23:01,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263338777] [2024-06-04 15:23:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:01,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:23:01,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:23:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:23:01,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:01,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 196 transitions, 1627 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:01,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:01,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:01,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:03,518 INFO L124 PetriNetUnfolderBase]: 12036/16704 cut-off events. [2024-06-04 15:23:03,518 INFO L125 PetriNetUnfolderBase]: For 546115/546123 co-relation queries the response was YES. [2024-06-04 15:23:03,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110634 conditions, 16704 events. 12036/16704 cut-off events. For 546115/546123 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 91167 event pairs, 3577 based on Foata normal form. 26/16703 useless extension candidates. Maximal degree in co-relation 110581. Up to 14461 conditions per place. [2024-06-04 15:23:03,682 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 147 selfloop transitions, 101 changer transitions 0/255 dead transitions. [2024-06-04 15:23:03,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 255 transitions, 2561 flow [2024-06-04 15:23:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:23:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:23:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-04 15:23:03,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278846153846156 [2024-06-04 15:23:03,683 INFO L175 Difference]: Start difference. First operand has 123 places, 196 transitions, 1627 flow. Second operand 8 states and 205 transitions. [2024-06-04 15:23:03,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 255 transitions, 2561 flow [2024-06-04 15:23:04,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 255 transitions, 2472 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-04 15:23:04,138 INFO L231 Difference]: Finished difference. Result has 127 places, 200 transitions, 1873 flow [2024-06-04 15:23:04,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1873, PETRI_PLACES=127, PETRI_TRANSITIONS=200} [2024-06-04 15:23:04,139 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 72 predicate places. [2024-06-04 15:23:04,139 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 200 transitions, 1873 flow [2024-06-04 15:23:04,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:04,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:04,140 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 15:23:04,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:23:04,140 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:23:04,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:04,140 INFO L85 PathProgramCache]: Analyzing trace with hash -550612864, now seen corresponding path program 2 times [2024-06-04 15:23:04,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:04,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044895351] [2024-06-04 15:23:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:04,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:05,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:05,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044895351] [2024-06-04 15:23:05,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044895351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:05,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:05,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:23:05,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443153258] [2024-06-04 15:23:05,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:05,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:23:05,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:05,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:23:05,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:23:05,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:05,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 200 transitions, 1873 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:05,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:05,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:05,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:07,904 INFO L124 PetriNetUnfolderBase]: 12164/16906 cut-off events. [2024-06-04 15:23:07,904 INFO L125 PetriNetUnfolderBase]: For 590125/590133 co-relation queries the response was YES. [2024-06-04 15:23:07,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114845 conditions, 16906 events. 12164/16906 cut-off events. For 590125/590133 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 92716 event pairs, 4597 based on Foata normal form. 26/16915 useless extension candidates. Maximal degree in co-relation 114791. Up to 15313 conditions per place. [2024-06-04 15:23:08,304 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 150 selfloop transitions, 99 changer transitions 0/256 dead transitions. [2024-06-04 15:23:08,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 256 transitions, 2609 flow [2024-06-04 15:23:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:23:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:23:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-04 15:23:08,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-04 15:23:08,305 INFO L175 Difference]: Start difference. First operand has 127 places, 200 transitions, 1873 flow. Second operand 8 states and 204 transitions. [2024-06-04 15:23:08,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 256 transitions, 2609 flow [2024-06-04 15:23:08,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 256 transitions, 2470 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-04 15:23:08,705 INFO L231 Difference]: Finished difference. Result has 131 places, 202 transitions, 2009 flow [2024-06-04 15:23:08,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2009, PETRI_PLACES=131, PETRI_TRANSITIONS=202} [2024-06-04 15:23:08,705 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-04 15:23:08,705 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 202 transitions, 2009 flow [2024-06-04 15:23:08,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:08,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:08,706 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 15:23:08,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:23:08,706 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:23:08,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:08,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1897586252, now seen corresponding path program 1 times [2024-06-04 15:23:08,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:08,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494800409] [2024-06-04 15:23:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:08,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:09,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:09,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494800409] [2024-06-04 15:23:09,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494800409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:09,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:09,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:23:09,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179514633] [2024-06-04 15:23:09,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:09,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:23:09,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:09,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:23:09,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:23:09,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:09,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 202 transitions, 2009 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 15:23:09,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:09,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:09,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:12,149 INFO L124 PetriNetUnfolderBase]: 12286/17103 cut-off events. [2024-06-04 15:23:12,149 INFO L125 PetriNetUnfolderBase]: For 622886/622924 co-relation queries the response was YES. [2024-06-04 15:23:12,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117881 conditions, 17103 events. 12286/17103 cut-off events. For 622886/622924 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 94413 event pairs, 4902 based on Foata normal form. 30/17128 useless extension candidates. Maximal degree in co-relation 117825. Up to 16480 conditions per place. [2024-06-04 15:23:12,324 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 190 selfloop transitions, 47 changer transitions 0/244 dead transitions. [2024-06-04 15:23:12,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 244 transitions, 2699 flow [2024-06-04 15:23:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:23:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:23:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-04 15:23:12,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 15:23:12,325 INFO L175 Difference]: Start difference. First operand has 131 places, 202 transitions, 2009 flow. Second operand 7 states and 169 transitions. [2024-06-04 15:23:12,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 244 transitions, 2699 flow [2024-06-04 15:23:12,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 244 transitions, 2456 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 15:23:12,860 INFO L231 Difference]: Finished difference. Result has 132 places, 207 transitions, 1967 flow [2024-06-04 15:23:12,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1967, PETRI_PLACES=132, PETRI_TRANSITIONS=207} [2024-06-04 15:23:12,861 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2024-06-04 15:23:12,861 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 207 transitions, 1967 flow [2024-06-04 15:23:12,861 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 15:23:12,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:12,861 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 15:23:12,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:23:12,861 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:23:12,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1177118352, now seen corresponding path program 3 times [2024-06-04 15:23:12,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:12,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539285383] [2024-06-04 15:23:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539285383] [2024-06-04 15:23:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539285383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:13,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:13,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:23:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382927183] [2024-06-04 15:23:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:13,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:23:13,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:13,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:23:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:23:14,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:14,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 207 transitions, 1967 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:14,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:14,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:14,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:16,923 INFO L124 PetriNetUnfolderBase]: 12545/17528 cut-off events. [2024-06-04 15:23:16,923 INFO L125 PetriNetUnfolderBase]: For 687801/687835 co-relation queries the response was YES. [2024-06-04 15:23:16,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124447 conditions, 17528 events. 12545/17528 cut-off events. For 687801/687835 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 97494 event pairs, 3962 based on Foata normal form. 44/17565 useless extension candidates. Maximal degree in co-relation 124390. Up to 15733 conditions per place. [2024-06-04 15:23:17,061 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 163 selfloop transitions, 101 changer transitions 0/271 dead transitions. [2024-06-04 15:23:17,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 271 transitions, 2991 flow [2024-06-04 15:23:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:23:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:23:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-04 15:23:17,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2024-06-04 15:23:17,062 INFO L175 Difference]: Start difference. First operand has 132 places, 207 transitions, 1967 flow. Second operand 8 states and 210 transitions. [2024-06-04 15:23:17,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 271 transitions, 2991 flow [2024-06-04 15:23:17,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 271 transitions, 2828 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-04 15:23:17,531 INFO L231 Difference]: Finished difference. Result has 135 places, 211 transitions, 2155 flow [2024-06-04 15:23:17,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2155, PETRI_PLACES=135, PETRI_TRANSITIONS=211} [2024-06-04 15:23:17,532 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-04 15:23:17,532 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 211 transitions, 2155 flow [2024-06-04 15:23:17,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:17,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:17,532 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 15:23:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:23:17,533 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:23:17,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1182628602, now seen corresponding path program 4 times [2024-06-04 15:23:17,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:17,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312341447] [2024-06-04 15:23:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:17,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:18,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312341447] [2024-06-04 15:23:18,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312341447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:18,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:18,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:23:18,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164918137] [2024-06-04 15:23:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:18,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:23:18,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:23:18,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:23:18,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:18,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 211 transitions, 2155 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:18,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:18,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:18,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:21,685 INFO L124 PetriNetUnfolderBase]: 12709/17748 cut-off events. [2024-06-04 15:23:21,685 INFO L125 PetriNetUnfolderBase]: For 737121/737151 co-relation queries the response was YES. [2024-06-04 15:23:21,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127969 conditions, 17748 events. 12709/17748 cut-off events. For 737121/737151 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 98900 event pairs, 4640 based on Foata normal form. 44/17785 useless extension candidates. Maximal degree in co-relation 127911. Up to 16377 conditions per place. [2024-06-04 15:23:21,823 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 167 selfloop transitions, 92 changer transitions 0/266 dead transitions. [2024-06-04 15:23:21,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 266 transitions, 2923 flow [2024-06-04 15:23:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:23:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:23:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-04 15:23:21,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-04 15:23:21,825 INFO L175 Difference]: Start difference. First operand has 135 places, 211 transitions, 2155 flow. Second operand 8 states and 200 transitions. [2024-06-04 15:23:21,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 266 transitions, 2923 flow [2024-06-04 15:23:22,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 266 transitions, 2756 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-04 15:23:22,343 INFO L231 Difference]: Finished difference. Result has 139 places, 213 transitions, 2260 flow [2024-06-04 15:23:22,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1992, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2260, PETRI_PLACES=139, PETRI_TRANSITIONS=213} [2024-06-04 15:23:22,344 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2024-06-04 15:23:22,344 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 213 transitions, 2260 flow [2024-06-04 15:23:22,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:22,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:22,344 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 15:23:22,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:23:22,344 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:23:22,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:22,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1056841272, now seen corresponding path program 5 times [2024-06-04 15:23:22,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:22,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569636301] [2024-06-04 15:23:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:22,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:23,345 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 15:23:23,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:23,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569636301] [2024-06-04 15:23:23,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569636301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:23,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:23,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:23:23,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790287123] [2024-06-04 15:23:23,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:23,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:23:23,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:23,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:23:23,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:23:23,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:23,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 213 transitions, 2260 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:23,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:23,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:23,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:26,481 INFO L124 PetriNetUnfolderBase]: 12873/18016 cut-off events. [2024-06-04 15:23:26,481 INFO L125 PetriNetUnfolderBase]: For 776064/776098 co-relation queries the response was YES. [2024-06-04 15:23:26,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130953 conditions, 18016 events. 12873/18016 cut-off events. For 776064/776098 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 100775 event pairs, 4684 based on Foata normal form. 50/18059 useless extension candidates. Maximal degree in co-relation 130893. Up to 16621 conditions per place. [2024-06-04 15:23:26,640 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 168 selfloop transitions, 96 changer transitions 0/271 dead transitions. [2024-06-04 15:23:26,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 271 transitions, 3050 flow [2024-06-04 15:23:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:23:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:23:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-04 15:23:26,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-04 15:23:26,641 INFO L175 Difference]: Start difference. First operand has 139 places, 213 transitions, 2260 flow. Second operand 8 states and 204 transitions. [2024-06-04 15:23:26,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 271 transitions, 3050 flow [2024-06-04 15:23:27,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 271 transitions, 2828 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-04 15:23:27,284 INFO L231 Difference]: Finished difference. Result has 141 places, 215 transitions, 2318 flow [2024-06-04 15:23:27,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2318, PETRI_PLACES=141, PETRI_TRANSITIONS=215} [2024-06-04 15:23:27,284 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-04 15:23:27,284 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 215 transitions, 2318 flow [2024-06-04 15:23:27,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:27,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:27,285 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 15:23:27,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:23:27,285 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:23:27,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1182843804, now seen corresponding path program 1 times [2024-06-04 15:23:27,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:27,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674560490] [2024-06-04 15:23:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:27,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:28,529 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 15:23:28,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:28,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674560490] [2024-06-04 15:23:28,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674560490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:28,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:28,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:23:28,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152001414] [2024-06-04 15:23:28,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:28,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:23:28,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:23:28,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:23:28,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:28,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 215 transitions, 2318 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:28,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:28,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:28,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:23:31,812 INFO L124 PetriNetUnfolderBase]: 12965/18138 cut-off events. [2024-06-04 15:23:31,812 INFO L125 PetriNetUnfolderBase]: For 811331/811361 co-relation queries the response was YES. [2024-06-04 15:23:31,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132702 conditions, 18138 events. 12965/18138 cut-off events. For 811331/811361 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 101826 event pairs, 4658 based on Foata normal form. 32/18153 useless extension candidates. Maximal degree in co-relation 132641. Up to 16089 conditions per place. [2024-06-04 15:23:31,979 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 164 selfloop transitions, 99 changer transitions 0/270 dead transitions. [2024-06-04 15:23:31,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 270 transitions, 3092 flow [2024-06-04 15:23:31,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:23:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:23:31,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-04 15:23:31,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831730769230769 [2024-06-04 15:23:31,981 INFO L175 Difference]: Start difference. First operand has 141 places, 215 transitions, 2318 flow. Second operand 8 states and 201 transitions. [2024-06-04 15:23:31,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 270 transitions, 3092 flow [2024-06-04 15:23:32,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 270 transitions, 2858 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-04 15:23:32,530 INFO L231 Difference]: Finished difference. Result has 143 places, 217 transitions, 2368 flow [2024-06-04 15:23:32,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2368, PETRI_PLACES=143, PETRI_TRANSITIONS=217} [2024-06-04 15:23:32,531 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 88 predicate places. [2024-06-04 15:23:32,531 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 217 transitions, 2368 flow [2024-06-04 15:23:32,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:23:32,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:23:32,531 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 15:23:32,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:23:32,531 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:23:32,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:23:32,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1897884782, now seen corresponding path program 2 times [2024-06-04 15:23:32,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:23:32,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761491477] [2024-06-04 15:23:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:23:32,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:23:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:23:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:23:33,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:23:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761491477] [2024-06-04 15:23:33,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761491477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:23:33,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:23:33,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:23:33,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685016172] [2024-06-04 15:23:33,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:23:33,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:23:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:23:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:23:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:23:33,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-04 15:23:33,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 217 transitions, 2368 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 15:23:33,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:23:33,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-04 15:23:33,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand