./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix030_tso.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/mix030_tso.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/mix030_tso.i ./goblint.2024-05-21_14-57-05.files/protection/mix030_tso.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 15:02:34,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:02:34,671 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:02:34,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:02:34,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:02:34,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:02:34,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:02:34,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:02:34,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:02:34,713 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:02:34,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:02:34,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:02:34,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:02:34,715 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:02:34,715 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:02:34,716 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:02:34,716 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:02:34,716 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:02:34,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:02:34,716 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:02:34,717 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:02:34,717 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:02:34,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:02:34,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:02:34,718 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:02:34,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:02:34,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:02:34,719 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:02:34,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:02:34,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:02:34,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:02:34,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:02:34,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:02:34,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:02:34,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:02:34,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:02:34,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:02:34,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:02:34,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:02:34,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:02:34,722 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:02:34,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:02:34,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:02:34,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:02:34,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:02:34,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:02:34,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:02:34,982 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:02:34,982 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:02:34,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix030_tso.i [2024-06-04 15:02:35,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:02:36,215 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:02:36,216 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_tso.i [2024-06-04 15:02:36,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07f7a2f1/65ca0f40ddd64357b34eef768ed1f2ab/FLAG47e5ea921 [2024-06-04 15:02:36,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07f7a2f1/65ca0f40ddd64357b34eef768ed1f2ab [2024-06-04 15:02:36,239 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:02:36,240 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:02:36,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix030_tso.yml/witness.yml [2024-06-04 15:02:36,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:02:36,392 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:02:36,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:02:36,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:02:36,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:02:36,397 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:02:36" (1/2) ... [2024-06-04 15:02:36,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6edbcbc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:02:36, skipping insertion in model container [2024-06-04 15:02:36,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:02:36" (1/2) ... [2024-06-04 15:02:36,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f855291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:02:36, skipping insertion in model container [2024-06-04 15:02:36,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:02:36" (2/2) ... [2024-06-04 15:02:36,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6edbcbc3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:36, skipping insertion in model container [2024-06-04 15:02:36,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:02:36" (2/2) ... [2024-06-04 15:02:36,401 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:02:36,541 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:02:36,543 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ((((((((((((((((((((! multithreaded || z$read_delayed == (_Bool)0) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) [2024-06-04 15:02:36,543 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] ((((((((((((((((((((! multithreaded || z$read_delayed == (_Bool)0) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) [2024-06-04 15:02:36,543 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] ((((((((((((((((((((! multithreaded || z$read_delayed == (_Bool)0) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) [2024-06-04 15:02:36,543 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((! multithreaded || z$read_delayed == (_Bool)0) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 2) && __unbuffered_p3_EAX <= 127) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) [2024-06-04 15:02:36,544 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:02:36,544 INFO L106 edCorrectnessWitness]: ghost_update [L853-L853] multithreaded = 1; [2024-06-04 15:02:36,582 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:02:36,955 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:02:36,964 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 15:02:37,074 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:02:37,109 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:02:37,110 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37 WrapperNode [2024-06-04 15:02:37,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:02:37,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:02:37,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:02:37,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:02:37,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,158 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 178 [2024-06-04 15:02:37,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:02:37,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:02:37,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:02:37,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:02:37,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,173 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,194 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 15:02:37,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:02:37,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:02:37,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:02:37,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:02:37,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (1/1) ... [2024-06-04 15:02:37,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:02:37,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:02:37,247 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 15:02:37,265 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 15:02:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:02:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:02:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:02:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:02:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:02:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:02:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-04 15:02:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-04 15:02:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-04 15:02:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-04 15:02:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:02:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:02:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:02:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:02:37,282 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:02:37,419 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:02:37,421 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:02:37,748 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:02:37,748 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:02:37,921 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:02:37,922 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:02:37,922 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:02:37 BoogieIcfgContainer [2024-06-04 15:02:37,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:02:37,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:02:37,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:02:37,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:02:37,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:02:36" (1/4) ... [2024-06-04 15:02:37,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5f73db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:02:37, skipping insertion in model container [2024-06-04 15:02:37,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:02:36" (2/4) ... [2024-06-04 15:02:37,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5f73db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:02:37, skipping insertion in model container [2024-06-04 15:02:37,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:02:37" (3/4) ... [2024-06-04 15:02:37,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5f73db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:02:37, skipping insertion in model container [2024-06-04 15:02:37,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:02:37" (4/4) ... [2024-06-04 15:02:37,929 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_tso.i [2024-06-04 15:02:37,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:02:37,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-04 15:02:37,941 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:02:37,983 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:02:38,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-04 15:02:38,044 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-04 15:02:38,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:02:38,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 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. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:02:38,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-04 15:02:38,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-04 15:02:38,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:02:38,066 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;@3c68688f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:02:38,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-04 15:02:38,071 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:02:38,071 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:02:38,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:02:38,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:02:38,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:02:38,072 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 15:02:38,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:02:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash -7406172, now seen corresponding path program 1 times [2024-06-04 15:02:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:02:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186109946] [2024-06-04 15:02:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:02:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:02:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:02:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:02:39,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:02:39,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186109946] [2024-06-04 15:02:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186109946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:02:39,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:02:39,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:02:39,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711732051] [2024-06-04 15:02:39,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:02:39,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:02:39,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:02:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:02:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:02:39,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 15:02:39,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 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 15:02:39,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:02:39,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 15:02:39,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:02:40,683 INFO L124 PetriNetUnfolderBase]: 9547/13263 cut-off events. [2024-06-04 15:02:40,683 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-04 15:02:40,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26597 conditions, 13263 events. 9547/13263 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 72462 event pairs, 7308 based on Foata normal form. 1/12896 useless extension candidates. Maximal degree in co-relation 26581. Up to 12953 conditions per place. [2024-06-04 15:02:40,759 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 45 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-04 15:02:40,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 235 flow [2024-06-04 15:02:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:02:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:02:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-04 15:02:40,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-04 15:02:40,770 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 93 transitions. [2024-06-04 15:02:40,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 235 flow [2024-06-04 15:02:40,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 15:02:40,774 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-04 15:02:40,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-04 15:02:40,778 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-04 15:02:40,778 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-04 15:02:40,778 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 15:02:40,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:02:40,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:02:40,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:02:40,779 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 15:02:40,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:02:40,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1472658499, now seen corresponding path program 1 times [2024-06-04 15:02:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:02:40,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107180455] [2024-06-04 15:02:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:02:40,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:02:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:02:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:02:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:02:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107180455] [2024-06-04 15:02:41,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107180455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:02:41,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:02:41,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:02:41,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430030349] [2024-06-04 15:02:41,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:02:41,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:02:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:02:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:02:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:02:41,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:02:41,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 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 15:02:41,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:02:41,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:02:41,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:02:43,147 INFO L124 PetriNetUnfolderBase]: 10932/14852 cut-off events. [2024-06-04 15:02:43,147 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-04 15:02:43,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33867 conditions, 14852 events. 10932/14852 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 78429 event pairs, 7512 based on Foata normal form. 4/14848 useless extension candidates. Maximal degree in co-relation 33852. Up to 14763 conditions per place. [2024-06-04 15:02:43,225 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 56 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-04 15:02:43,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 329 flow [2024-06-04 15:02:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:02:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:02:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-04 15:02:43,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518867924528302 [2024-06-04 15:02:43,228 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 117 transitions. [2024-06-04 15:02:43,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 329 flow [2024-06-04 15:02:43,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:02:43,236 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-04 15:02:43,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-04 15:02:43,237 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-04 15:02:43,237 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-04 15:02:43,239 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 15:02:43,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:02:43,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:02:43,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:02:43,241 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 15:02:43,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:02:43,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1592225001, now seen corresponding path program 1 times [2024-06-04 15:02:43,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:02:43,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689248032] [2024-06-04 15:02:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:02:43,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:02:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:02:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:02:44,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:02:44,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689248032] [2024-06-04 15:02:44,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689248032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:02:44,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:02:44,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:02:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90138244] [2024-06-04 15:02:44,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:02:44,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:02:44,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:02:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:02:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:02:44,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:02:44,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 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 15:02:44,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:02:44,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:02:44,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:02:45,571 INFO L124 PetriNetUnfolderBase]: 10950/14933 cut-off events. [2024-06-04 15:02:45,572 INFO L125 PetriNetUnfolderBase]: For 8377/8377 co-relation queries the response was YES. [2024-06-04 15:02:45,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37815 conditions, 14933 events. 10950/14933 cut-off events. For 8377/8377 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 79621 event pairs, 5910 based on Foata normal form. 7/14935 useless extension candidates. Maximal degree in co-relation 37798. Up to 14684 conditions per place. [2024-06-04 15:02:45,668 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 74 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-04 15:02:45,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 545 flow [2024-06-04 15:02:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:02:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:02:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-04 15:02:45,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773584905660377 [2024-06-04 15:02:45,670 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 153 transitions. [2024-06-04 15:02:45,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 545 flow [2024-06-04 15:02:45,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 526 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 15:02:45,674 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-04 15:02:45,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-04 15:02:45,674 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-04 15:02:45,675 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-04 15:02:45,675 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 15:02:45,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:02:45,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:02:45,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:02:45,675 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 15:02:45,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:02:45,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1119810410, now seen corresponding path program 1 times [2024-06-04 15:02:45,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:02:45,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620103173] [2024-06-04 15:02:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:02:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:02:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:02:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:02:46,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:02:46,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620103173] [2024-06-04 15:02:46,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620103173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:02:46,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:02:46,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:02:46,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945252137] [2024-06-04 15:02:46,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:02:46,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:02:46,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:02:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:02:46,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:02:46,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:02:46,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 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 15:02:46,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:02:46,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:02:46,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:02:47,807 INFO L124 PetriNetUnfolderBase]: 10979/14976 cut-off events. [2024-06-04 15:02:47,807 INFO L125 PetriNetUnfolderBase]: For 19963/19969 co-relation queries the response was YES. [2024-06-04 15:02:47,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44209 conditions, 14976 events. 10979/14976 cut-off events. For 19963/19969 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 79733 event pairs, 4816 based on Foata normal form. 18/14989 useless extension candidates. Maximal degree in co-relation 44189. Up to 14649 conditions per place. [2024-06-04 15:02:47,904 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 81 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2024-06-04 15:02:47,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 690 flow [2024-06-04 15:02:47,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:02:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:02:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-06-04 15:02:47,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534591194968553 [2024-06-04 15:02:47,906 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 176 transitions. [2024-06-04 15:02:47,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 690 flow [2024-06-04 15:02:47,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 678 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-04 15:02:47,914 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 389 flow [2024-06-04 15:02:47,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-04 15:02:47,915 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-04 15:02:47,915 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 389 flow [2024-06-04 15:02:47,915 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 15:02:47,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:02:47,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:02:47,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:02:47,916 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 15:02:47,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:02:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1999637521, now seen corresponding path program 1 times [2024-06-04 15:02:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:02:47,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824159758] [2024-06-04 15:02:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:02:47,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:02:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:02:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:02:48,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:02:48,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824159758] [2024-06-04 15:02:48,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824159758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:02:48,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:02:48,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:02:48,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145697] [2024-06-04 15:02:48,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:02:48,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:02:48,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:02:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:02:48,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:02:48,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:02:48,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 389 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 15:02:48,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:02:48,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:02:48,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:02:50,021 INFO L124 PetriNetUnfolderBase]: 9575/13374 cut-off events. [2024-06-04 15:02:50,022 INFO L125 PetriNetUnfolderBase]: For 25662/25662 co-relation queries the response was YES. [2024-06-04 15:02:50,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42756 conditions, 13374 events. 9575/13374 cut-off events. For 25662/25662 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 73913 event pairs, 4948 based on Foata normal form. 3/13207 useless extension candidates. Maximal degree in co-relation 42733. Up to 12980 conditions per place. [2024-06-04 15:02:50,092 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 68 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-06-04 15:02:50,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 589 flow [2024-06-04 15:02:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:02:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:02:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-04 15:02:50,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641509433962264 [2024-06-04 15:02:50,093 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 389 flow. Second operand 5 states and 123 transitions. [2024-06-04 15:02:50,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 589 flow [2024-06-04 15:02:50,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 520 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 15:02:50,102 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 351 flow [2024-06-04 15:02:50,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-06-04 15:02:50,103 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-04 15:02:50,103 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 351 flow [2024-06-04 15:02:50,103 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 15:02:50,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:02:50,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:02:50,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:02:50,104 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 15:02:50,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:02:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1858991889, now seen corresponding path program 1 times [2024-06-04 15:02:50,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:02:50,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259850828] [2024-06-04 15:02:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:02:50,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:02:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:02:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:02:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:02:50,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259850828] [2024-06-04 15:02:50,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259850828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:02:50,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:02:50,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:02:50,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856984522] [2024-06-04 15:02:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:02:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:02:50,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:02:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:02:50,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:02:50,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:02:50,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 351 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 15:02:50,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:02:50,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:02:50,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:02:52,561 INFO L124 PetriNetUnfolderBase]: 9587/13403 cut-off events. [2024-06-04 15:02:52,561 INFO L125 PetriNetUnfolderBase]: For 29621/29621 co-relation queries the response was YES. [2024-06-04 15:02:52,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43517 conditions, 13403 events. 9587/13403 cut-off events. For 29621/29621 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 73691 event pairs, 4728 based on Foata normal form. 5/13259 useless extension candidates. Maximal degree in co-relation 43492. Up to 12930 conditions per place. [2024-06-04 15:02:52,646 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 81 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-04 15:02:52,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 110 transitions, 751 flow [2024-06-04 15:02:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:02:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:02:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-04 15:02:52,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48427672955974843 [2024-06-04 15:02:52,650 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 351 flow. Second operand 6 states and 154 transitions. [2024-06-04 15:02:52,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 110 transitions, 751 flow [2024-06-04 15:02:52,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 722 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 15:02:52,664 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 496 flow [2024-06-04 15:02:52,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=496, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2024-06-04 15:02:52,667 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-04 15:02:52,667 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 496 flow [2024-06-04 15:02:52,667 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 15:02:52,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:02:52,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:02:52,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:02:52,668 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 15:02:52,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:02:52,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1794853668, now seen corresponding path program 1 times [2024-06-04 15:02:52,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:02:52,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548848290] [2024-06-04 15:02:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:02:52,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:02:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:02:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:02:53,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:02:53,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548848290] [2024-06-04 15:02:53,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548848290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:02:53,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:02:53,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:02:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441683678] [2024-06-04 15:02:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:02:53,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:02:53,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:02:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:02:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:02:53,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:02:53,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 496 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 15:02:53,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:02:53,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:02:53,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:02:55,322 INFO L124 PetriNetUnfolderBase]: 10995/14966 cut-off events. [2024-06-04 15:02:55,322 INFO L125 PetriNetUnfolderBase]: For 53023/53035 co-relation queries the response was YES. [2024-06-04 15:02:55,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54965 conditions, 14966 events. 10995/14966 cut-off events. For 53023/53035 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 78908 event pairs, 5541 based on Foata normal form. 14/14975 useless extension candidates. Maximal degree in co-relation 54938. Up to 14743 conditions per place. [2024-06-04 15:02:55,410 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 85 selfloop transitions, 25 changer transitions 0/116 dead transitions. [2024-06-04 15:02:55,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 859 flow [2024-06-04 15:02:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:02:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:02:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-04 15:02:55,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748427672955975 [2024-06-04 15:02:55,411 INFO L175 Difference]: Start difference. First operand has 73 places, 82 transitions, 496 flow. Second operand 6 states and 151 transitions. [2024-06-04 15:02:55,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 859 flow [2024-06-04 15:02:55,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 116 transitions, 835 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-04 15:02:55,437 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 568 flow [2024-06-04 15:02:55,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-06-04 15:02:55,438 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-04 15:02:55,438 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 568 flow [2024-06-04 15:02:55,438 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 15:02:55,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:02:55,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:02:55,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:02:55,439 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 15:02:55,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:02:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1801317168, now seen corresponding path program 2 times [2024-06-04 15:02:55,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:02:55,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858889349] [2024-06-04 15:02:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:02:55,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:02:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:02:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:02:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:02:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858889349] [2024-06-04 15:02:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858889349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:02:56,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:02:56,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:02:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788395143] [2024-06-04 15:02:56,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:02:56,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:02:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:02:56,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:02:56,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:02:56,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:02:56,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 568 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 15:02:56,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:02:56,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:02:56,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:02:57,791 INFO L124 PetriNetUnfolderBase]: 10971/14918 cut-off events. [2024-06-04 15:02:57,792 INFO L125 PetriNetUnfolderBase]: For 59044/59048 co-relation queries the response was YES. [2024-06-04 15:02:57,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55438 conditions, 14918 events. 10971/14918 cut-off events. For 59044/59048 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 78596 event pairs, 5561 based on Foata normal form. 4/14911 useless extension candidates. Maximal degree in co-relation 55408. Up to 14713 conditions per place. [2024-06-04 15:02:57,880 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 78 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-04 15:02:57,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 838 flow [2024-06-04 15:02:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:02:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:02:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-04 15:02:57,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2024-06-04 15:02:57,882 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 568 flow. Second operand 6 states and 146 transitions. [2024-06-04 15:02:57,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 838 flow [2024-06-04 15:02:57,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 110 transitions, 795 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 15:02:57,919 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 588 flow [2024-06-04 15:02:57,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2024-06-04 15:02:57,920 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-06-04 15:02:57,920 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 588 flow [2024-06-04 15:02:57,920 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 15:02:57,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:02:57,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:02:57,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:02:57,921 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 15:02:57,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:02:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1373622574, now seen corresponding path program 1 times [2024-06-04 15:02:57,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:02:57,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915344595] [2024-06-04 15:02:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:02:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:02:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:02:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:02:58,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:02:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915344595] [2024-06-04 15:02:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915344595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:02:58,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:02:58,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:02:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813375877] [2024-06-04 15:02:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:02:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:02:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:02:58,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:02:58,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:02:58,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:02:58,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 588 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 15:02:58,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:02:58,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:02:58,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:00,606 INFO L124 PetriNetUnfolderBase]: 11509/15699 cut-off events. [2024-06-04 15:03:00,606 INFO L125 PetriNetUnfolderBase]: For 74540/74543 co-relation queries the response was YES. [2024-06-04 15:03:00,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59971 conditions, 15699 events. 11509/15699 cut-off events. For 74540/74543 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 84225 event pairs, 4900 based on Foata normal form. 12/15700 useless extension candidates. Maximal degree in co-relation 59940. Up to 14734 conditions per place. [2024-06-04 15:03:00,703 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 124 selfloop transitions, 59 changer transitions 0/189 dead transitions. [2024-06-04 15:03:00,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 189 transitions, 1668 flow [2024-06-04 15:03:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:03:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:03:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-04 15:03:00,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070754716981132 [2024-06-04 15:03:00,705 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 588 flow. Second operand 8 states and 215 transitions. [2024-06-04 15:03:00,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 189 transitions, 1668 flow [2024-06-04 15:03:00,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 189 transitions, 1505 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:03:00,749 INFO L231 Difference]: Finished difference. Result has 86 places, 122 transitions, 939 flow [2024-06-04 15:03:00,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=939, PETRI_PLACES=86, PETRI_TRANSITIONS=122} [2024-06-04 15:03:00,750 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-04 15:03:00,750 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 122 transitions, 939 flow [2024-06-04 15:03:00,750 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 15:03:00,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:00,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:00,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:03:00,751 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 15:03:00,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1691358724, now seen corresponding path program 2 times [2024-06-04 15:03:00,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:00,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806565450] [2024-06-04 15:03:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:00,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:01,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806565450] [2024-06-04 15:03:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806565450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:01,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:01,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:03:01,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224745785] [2024-06-04 15:03:01,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:03:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:03:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:03:01,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:01,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 122 transitions, 939 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 15:03:01,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:01,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:01,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:03,799 INFO L124 PetriNetUnfolderBase]: 11857/16208 cut-off events. [2024-06-04 15:03:03,800 INFO L125 PetriNetUnfolderBase]: For 106986/106995 co-relation queries the response was YES. [2024-06-04 15:03:03,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70951 conditions, 16208 events. 11857/16208 cut-off events. For 106986/106995 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 87287 event pairs, 5037 based on Foata normal form. 24/16221 useless extension candidates. Maximal degree in co-relation 70916. Up to 15002 conditions per place. [2024-06-04 15:03:03,897 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 103 selfloop transitions, 81 changer transitions 0/190 dead transitions. [2024-06-04 15:03:03,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 190 transitions, 1811 flow [2024-06-04 15:03:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:03:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:03:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-04 15:03:03,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49865229110512127 [2024-06-04 15:03:03,899 INFO L175 Difference]: Start difference. First operand has 86 places, 122 transitions, 939 flow. Second operand 7 states and 185 transitions. [2024-06-04 15:03:03,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 190 transitions, 1811 flow [2024-06-04 15:03:03,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 190 transitions, 1717 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-04 15:03:03,969 INFO L231 Difference]: Finished difference. Result has 93 places, 143 transitions, 1312 flow [2024-06-04 15:03:03,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1312, PETRI_PLACES=93, PETRI_TRANSITIONS=143} [2024-06-04 15:03:03,970 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-06-04 15:03:03,970 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 143 transitions, 1312 flow [2024-06-04 15:03:03,970 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 15:03:03,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:03,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:03,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:03:03,971 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 15:03:03,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash 6496032, now seen corresponding path program 3 times [2024-06-04 15:03:03,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:03,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099696970] [2024-06-04 15:03:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:03,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:04,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:04,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099696970] [2024-06-04 15:03:04,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099696970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:04,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:04,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:03:04,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994034249] [2024-06-04 15:03:04,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:04,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:03:04,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:04,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:03:04,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:03:04,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:04,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 143 transitions, 1312 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 15:03:04,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:04,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:04,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:07,093 INFO L124 PetriNetUnfolderBase]: 11974/16390 cut-off events. [2024-06-04 15:03:07,094 INFO L125 PetriNetUnfolderBase]: For 140687/140706 co-relation queries the response was YES. [2024-06-04 15:03:07,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78348 conditions, 16390 events. 11974/16390 cut-off events. For 140687/140706 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 88491 event pairs, 5045 based on Foata normal form. 21/16389 useless extension candidates. Maximal degree in co-relation 78309. Up to 15079 conditions per place. [2024-06-04 15:03:07,201 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 100 selfloop transitions, 108 changer transitions 0/214 dead transitions. [2024-06-04 15:03:07,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 214 transitions, 2354 flow [2024-06-04 15:03:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:03:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:03:07,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-04 15:03:07,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49595687331536387 [2024-06-04 15:03:07,202 INFO L175 Difference]: Start difference. First operand has 93 places, 143 transitions, 1312 flow. Second operand 7 states and 184 transitions. [2024-06-04 15:03:07,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 214 transitions, 2354 flow [2024-06-04 15:03:07,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 214 transitions, 2221 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-04 15:03:07,310 INFO L231 Difference]: Finished difference. Result has 99 places, 168 transitions, 1806 flow [2024-06-04 15:03:07,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1806, PETRI_PLACES=99, PETRI_TRANSITIONS=168} [2024-06-04 15:03:07,311 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-04 15:03:07,311 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 168 transitions, 1806 flow [2024-06-04 15:03:07,311 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 15:03:07,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:07,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:07,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:03:07,312 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 15:03:07,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash -215386158, now seen corresponding path program 4 times [2024-06-04 15:03:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:07,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703847914] [2024-06-04 15:03:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:07,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:08,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:08,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703847914] [2024-06-04 15:03:08,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703847914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:08,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:08,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:03:08,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129428647] [2024-06-04 15:03:08,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:08,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:03:08,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:08,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:03:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:03:08,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:08,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 168 transitions, 1806 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 15:03:08,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:08,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:08,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:10,427 INFO L124 PetriNetUnfolderBase]: 11954/16355 cut-off events. [2024-06-04 15:03:10,427 INFO L125 PetriNetUnfolderBase]: For 173412/173425 co-relation queries the response was YES. [2024-06-04 15:03:10,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83114 conditions, 16355 events. 11954/16355 cut-off events. For 173412/173425 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 88202 event pairs, 5069 based on Foata normal form. 16/16349 useless extension candidates. Maximal degree in co-relation 83072. Up to 15072 conditions per place. [2024-06-04 15:03:10,536 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 106 selfloop transitions, 100 changer transitions 0/212 dead transitions. [2024-06-04 15:03:10,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 212 transitions, 2546 flow [2024-06-04 15:03:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:03:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:03:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-04 15:03:10,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-04 15:03:10,538 INFO L175 Difference]: Start difference. First operand has 99 places, 168 transitions, 1806 flow. Second operand 7 states and 182 transitions. [2024-06-04 15:03:10,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 212 transitions, 2546 flow [2024-06-04 15:03:10,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 212 transitions, 2452 flow, removed 46 selfloop flow, removed 1 redundant places. [2024-06-04 15:03:10,681 INFO L231 Difference]: Finished difference. Result has 105 places, 168 transitions, 1932 flow [2024-06-04 15:03:10,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1932, PETRI_PLACES=105, PETRI_TRANSITIONS=168} [2024-06-04 15:03:10,681 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-06-04 15:03:10,681 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 168 transitions, 1932 flow [2024-06-04 15:03:10,682 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 15:03:10,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:10,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:10,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:03:10,682 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 15:03:10,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1932294494, now seen corresponding path program 1 times [2024-06-04 15:03:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930829347] [2024-06-04 15:03:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:11,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:11,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930829347] [2024-06-04 15:03:11,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930829347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:11,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:11,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:03:11,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83920951] [2024-06-04 15:03:11,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:11,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:03:11,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:03:11,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:03:11,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:03:11,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 168 transitions, 1932 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:03:11,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:11,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:03:11,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:13,483 INFO L124 PetriNetUnfolderBase]: 10579/14723 cut-off events. [2024-06-04 15:03:13,484 INFO L125 PetriNetUnfolderBase]: For 151847/151852 co-relation queries the response was YES. [2024-06-04 15:03:13,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74208 conditions, 14723 events. 10579/14723 cut-off events. For 151847/151852 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 81168 event pairs, 4299 based on Foata normal form. 12/14656 useless extension candidates. Maximal degree in co-relation 74163. Up to 14195 conditions per place. [2024-06-04 15:03:13,634 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 175 selfloop transitions, 26 changer transitions 0/208 dead transitions. [2024-06-04 15:03:13,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 208 transitions, 2584 flow [2024-06-04 15:03:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:03:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:03:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-04 15:03:13,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797843665768194 [2024-06-04 15:03:13,637 INFO L175 Difference]: Start difference. First operand has 105 places, 168 transitions, 1932 flow. Second operand 7 states and 178 transitions. [2024-06-04 15:03:13,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 208 transitions, 2584 flow [2024-06-04 15:03:13,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 208 transitions, 2353 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:03:13,939 INFO L231 Difference]: Finished difference. Result has 106 places, 172 transitions, 1818 flow [2024-06-04 15:03:13,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1818, PETRI_PLACES=106, PETRI_TRANSITIONS=172} [2024-06-04 15:03:13,940 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-04 15:03:13,940 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 172 transitions, 1818 flow [2024-06-04 15:03:13,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:03:13,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:13,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:13,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:03:13,940 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 15:03:13,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1437426046, now seen corresponding path program 1 times [2024-06-04 15:03:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:13,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838493432] [2024-06-04 15:03:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:13,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:14,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:14,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838493432] [2024-06-04 15:03:14,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838493432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:14,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:14,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:03:14,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414121969] [2024-06-04 15:03:14,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:14,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:03:14,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:14,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:03:14,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:03:14,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:03:14,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 172 transitions, 1818 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 15:03:14,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:14,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:03:14,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:16,376 INFO L124 PetriNetUnfolderBase]: 10572/14710 cut-off events. [2024-06-04 15:03:16,376 INFO L125 PetriNetUnfolderBase]: For 164746/164748 co-relation queries the response was YES. [2024-06-04 15:03:16,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75916 conditions, 14710 events. 10572/14710 cut-off events. For 164746/164748 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 80937 event pairs, 4456 based on Foata normal form. 2/14631 useless extension candidates. Maximal degree in co-relation 75871. Up to 14310 conditions per place. [2024-06-04 15:03:16,502 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 169 selfloop transitions, 10 changer transitions 0/186 dead transitions. [2024-06-04 15:03:16,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 186 transitions, 2220 flow [2024-06-04 15:03:16,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:03:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:03:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-04 15:03:16,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490566037735849 [2024-06-04 15:03:16,503 INFO L175 Difference]: Start difference. First operand has 106 places, 172 transitions, 1818 flow. Second operand 5 states and 119 transitions. [2024-06-04 15:03:16,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 186 transitions, 2220 flow [2024-06-04 15:03:16,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 186 transitions, 2125 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-04 15:03:16,643 INFO L231 Difference]: Finished difference. Result has 106 places, 172 transitions, 1752 flow [2024-06-04 15:03:16,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1752, PETRI_PLACES=106, PETRI_TRANSITIONS=172} [2024-06-04 15:03:16,644 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-04 15:03:16,644 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 172 transitions, 1752 flow [2024-06-04 15:03:16,644 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 15:03:16,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:16,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:16,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:03:16,645 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 15:03:16,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:16,645 INFO L85 PathProgramCache]: Analyzing trace with hash -975329656, now seen corresponding path program 1 times [2024-06-04 15:03:16,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:16,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284628297] [2024-06-04 15:03:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:16,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:17,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:17,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284628297] [2024-06-04 15:03:17,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284628297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:17,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:17,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:03:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645902606] [2024-06-04 15:03:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:17,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:03:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:03:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:03:17,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:17,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 172 transitions, 1752 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 15:03:17,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:17,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:17,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:19,840 INFO L124 PetriNetUnfolderBase]: 12053/16534 cut-off events. [2024-06-04 15:03:19,841 INFO L125 PetriNetUnfolderBase]: For 208389/208404 co-relation queries the response was YES. [2024-06-04 15:03:19,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86039 conditions, 16534 events. 12053/16534 cut-off events. For 208389/208404 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 89576 event pairs, 5134 based on Foata normal form. 24/16547 useless extension candidates. Maximal degree in co-relation 85993. Up to 15181 conditions per place. [2024-06-04 15:03:19,999 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 118 selfloop transitions, 112 changer transitions 0/236 dead transitions. [2024-06-04 15:03:19,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 236 transitions, 2798 flow [2024-06-04 15:03:20,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:03:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:03:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-04 15:03:20,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040431266846361 [2024-06-04 15:03:20,001 INFO L175 Difference]: Start difference. First operand has 106 places, 172 transitions, 1752 flow. Second operand 7 states and 187 transitions. [2024-06-04 15:03:20,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 236 transitions, 2798 flow [2024-06-04 15:03:20,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 236 transitions, 2765 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 15:03:20,187 INFO L231 Difference]: Finished difference. Result has 110 places, 188 transitions, 2215 flow [2024-06-04 15:03:20,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2215, PETRI_PLACES=110, PETRI_TRANSITIONS=188} [2024-06-04 15:03:20,188 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2024-06-04 15:03:20,188 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 188 transitions, 2215 flow [2024-06-04 15:03:20,188 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 15:03:20,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:20,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:20,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:03:20,188 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 15:03:20,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash 892514228, now seen corresponding path program 2 times [2024-06-04 15:03:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:20,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320208077] [2024-06-04 15:03:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:20,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:20,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320208077] [2024-06-04 15:03:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320208077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:20,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:20,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:03:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955925422] [2024-06-04 15:03:20,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:20,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:03:20,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:03:20,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:03:21,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:21,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 188 transitions, 2215 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 15:03:21,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:21,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:21,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:23,302 INFO L124 PetriNetUnfolderBase]: 12133/16678 cut-off events. [2024-06-04 15:03:23,302 INFO L125 PetriNetUnfolderBase]: For 241621/241650 co-relation queries the response was YES. [2024-06-04 15:03:23,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91086 conditions, 16678 events. 12133/16678 cut-off events. For 241621/241650 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 90964 event pairs, 5122 based on Foata normal form. 36/16703 useless extension candidates. Maximal degree in co-relation 91039. Up to 15259 conditions per place. [2024-06-04 15:03:23,447 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 117 selfloop transitions, 117 changer transitions 0/240 dead transitions. [2024-06-04 15:03:23,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 240 transitions, 3133 flow [2024-06-04 15:03:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:03:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:03:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-04 15:03:23,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-04 15:03:23,449 INFO L175 Difference]: Start difference. First operand has 110 places, 188 transitions, 2215 flow. Second operand 7 states and 181 transitions. [2024-06-04 15:03:23,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 240 transitions, 3133 flow [2024-06-04 15:03:23,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 240 transitions, 2976 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-04 15:03:23,706 INFO L231 Difference]: Finished difference. Result has 114 places, 197 transitions, 2452 flow [2024-06-04 15:03:23,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2452, PETRI_PLACES=114, PETRI_TRANSITIONS=197} [2024-06-04 15:03:23,706 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-04 15:03:23,706 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 197 transitions, 2452 flow [2024-06-04 15:03:23,707 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 15:03:23,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:23,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:23,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:03:23,707 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 15:03:23,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash 201378328, now seen corresponding path program 3 times [2024-06-04 15:03:23,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:23,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123448804] [2024-06-04 15:03:23,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:23,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:24,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:24,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123448804] [2024-06-04 15:03:24,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123448804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:24,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:24,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:03:24,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505642202] [2024-06-04 15:03:24,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:24,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:03:24,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:03:24,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:03:24,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:24,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 197 transitions, 2452 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 15:03:24,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:24,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:24,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:26,818 INFO L124 PetriNetUnfolderBase]: 12148/16716 cut-off events. [2024-06-04 15:03:26,819 INFO L125 PetriNetUnfolderBase]: For 270698/270789 co-relation queries the response was YES. [2024-06-04 15:03:26,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93176 conditions, 16716 events. 12148/16716 cut-off events. For 270698/270789 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 91196 event pairs, 5169 based on Foata normal form. 68/16740 useless extension candidates. Maximal degree in co-relation 93128. Up to 15282 conditions per place. [2024-06-04 15:03:26,945 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 113 selfloop transitions, 124 changer transitions 0/243 dead transitions. [2024-06-04 15:03:26,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 243 transitions, 3270 flow [2024-06-04 15:03:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:03:26,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:03:26,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-04 15:03:26,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-04 15:03:26,946 INFO L175 Difference]: Start difference. First operand has 114 places, 197 transitions, 2452 flow. Second operand 7 states and 175 transitions. [2024-06-04 15:03:26,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 243 transitions, 3270 flow [2024-06-04 15:03:27,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 243 transitions, 3064 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-04 15:03:27,178 INFO L231 Difference]: Finished difference. Result has 117 places, 206 transitions, 2662 flow [2024-06-04 15:03:27,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2662, PETRI_PLACES=117, PETRI_TRANSITIONS=206} [2024-06-04 15:03:27,179 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2024-06-04 15:03:27,179 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 206 transitions, 2662 flow [2024-06-04 15:03:27,179 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 15:03:27,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:27,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:27,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:03:27,180 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:03:27,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1610535754, now seen corresponding path program 1 times [2024-06-04 15:03:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:27,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573290100] [2024-06-04 15:03:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:27,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:27,967 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 15:03:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573290100] [2024-06-04 15:03:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573290100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:27,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:27,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:03:27,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397497834] [2024-06-04 15:03:27,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:03:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:03:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:03:28,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:03:28,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 206 transitions, 2662 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 15:03:28,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:28,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:03:28,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:30,133 INFO L124 PetriNetUnfolderBase]: 10739/15250 cut-off events. [2024-06-04 15:03:30,133 INFO L125 PetriNetUnfolderBase]: For 256982/256984 co-relation queries the response was YES. [2024-06-04 15:03:30,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85592 conditions, 15250 events. 10739/15250 cut-off events. For 256982/256984 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 86231 event pairs, 4440 based on Foata normal form. 4/15235 useless extension candidates. Maximal degree in co-relation 85543. Up to 14517 conditions per place. [2024-06-04 15:03:30,233 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 208 selfloop transitions, 14 changer transitions 0/229 dead transitions. [2024-06-04 15:03:30,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 229 transitions, 3206 flow [2024-06-04 15:03:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:03:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:03:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-04 15:03:30,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44025157232704404 [2024-06-04 15:03:30,234 INFO L175 Difference]: Start difference. First operand has 117 places, 206 transitions, 2662 flow. Second operand 6 states and 140 transitions. [2024-06-04 15:03:30,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 229 transitions, 3206 flow [2024-06-04 15:03:30,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 229 transitions, 2994 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-04 15:03:30,456 INFO L231 Difference]: Finished difference. Result has 119 places, 210 transitions, 2537 flow [2024-06-04 15:03:30,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2537, PETRI_PLACES=119, PETRI_TRANSITIONS=210} [2024-06-04 15:03:30,456 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-04 15:03:30,456 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 210 transitions, 2537 flow [2024-06-04 15:03:30,456 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 15:03:30,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:30,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:30,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:03:30,457 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 15:03:30,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:30,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1779812775, now seen corresponding path program 1 times [2024-06-04 15:03:30,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:30,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356882443] [2024-06-04 15:03:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:30,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:31,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:31,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356882443] [2024-06-04 15:03:31,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356882443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:31,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:31,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:03:31,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140705384] [2024-06-04 15:03:31,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:31,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:03:31,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:31,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:03:31,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:03:31,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:31,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 210 transitions, 2537 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 15:03:31,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:31,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:31,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:33,360 INFO L124 PetriNetUnfolderBase]: 12170/16725 cut-off events. [2024-06-04 15:03:33,360 INFO L125 PetriNetUnfolderBase]: For 319594/319632 co-relation queries the response was YES. [2024-06-04 15:03:33,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97361 conditions, 16725 events. 12170/16725 cut-off events. For 319594/319632 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 90378 event pairs, 3970 based on Foata normal form. 38/16758 useless extension candidates. Maximal degree in co-relation 97310. Up to 16039 conditions per place. [2024-06-04 15:03:33,510 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 209 selfloop transitions, 41 changer transitions 0/256 dead transitions. [2024-06-04 15:03:33,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 256 transitions, 3383 flow [2024-06-04 15:03:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:03:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:03:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-04 15:03:33,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46630727762803237 [2024-06-04 15:03:33,511 INFO L175 Difference]: Start difference. First operand has 119 places, 210 transitions, 2537 flow. Second operand 7 states and 173 transitions. [2024-06-04 15:03:33,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 256 transitions, 3383 flow [2024-06-04 15:03:33,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 256 transitions, 3326 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-04 15:03:33,804 INFO L231 Difference]: Finished difference. Result has 122 places, 216 transitions, 2694 flow [2024-06-04 15:03:33,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2694, PETRI_PLACES=122, PETRI_TRANSITIONS=216} [2024-06-04 15:03:33,804 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-06-04 15:03:33,804 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 216 transitions, 2694 flow [2024-06-04 15:03:33,805 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 15:03:33,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:33,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:33,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:03:33,805 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 15:03:33,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:33,805 INFO L85 PathProgramCache]: Analyzing trace with hash 661357661, now seen corresponding path program 2 times [2024-06-04 15:03:33,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:33,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697533576] [2024-06-04 15:03:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:33,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:34,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:34,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697533576] [2024-06-04 15:03:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697533576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:34,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:03:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181366278] [2024-06-04 15:03:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:34,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:03:34,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:03:34,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:03:34,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:34,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 216 transitions, 2694 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 15:03:34,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:34,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:34,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:36,852 INFO L124 PetriNetUnfolderBase]: 12155/16695 cut-off events. [2024-06-04 15:03:36,853 INFO L125 PetriNetUnfolderBase]: For 353207/353229 co-relation queries the response was YES. [2024-06-04 15:03:36,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100131 conditions, 16695 events. 12155/16695 cut-off events. For 353207/353229 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 89976 event pairs, 4724 based on Foata normal form. 22/16712 useless extension candidates. Maximal degree in co-relation 100079. Up to 16154 conditions per place. [2024-06-04 15:03:37,024 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 208 selfloop transitions, 40 changer transitions 0/254 dead transitions. [2024-06-04 15:03:37,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 254 transitions, 3320 flow [2024-06-04 15:03:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:03:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:03:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-04 15:03:37,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582210242587601 [2024-06-04 15:03:37,025 INFO L175 Difference]: Start difference. First operand has 122 places, 216 transitions, 2694 flow. Second operand 7 states and 170 transitions. [2024-06-04 15:03:37,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 254 transitions, 3320 flow [2024-06-04 15:03:37,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 254 transitions, 3188 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-04 15:03:37,498 INFO L231 Difference]: Finished difference. Result has 126 places, 216 transitions, 2654 flow [2024-06-04 15:03:37,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2654, PETRI_PLACES=126, PETRI_TRANSITIONS=216} [2024-06-04 15:03:37,499 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-06-04 15:03:37,499 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 216 transitions, 2654 flow [2024-06-04 15:03:37,499 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 15:03:37,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:37,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:37,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:03:37,500 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:03:37,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1583961199, now seen corresponding path program 1 times [2024-06-04 15:03:37,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:37,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260516738] [2024-06-04 15:03:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:37,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:38,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:38,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260516738] [2024-06-04 15:03:38,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260516738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:38,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:03:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404794868] [2024-06-04 15:03:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:38,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:03:38,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:38,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:03:38,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:03:38,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:38,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 216 transitions, 2654 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:03:38,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:38,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:38,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:41,017 INFO L124 PetriNetUnfolderBase]: 12480/17169 cut-off events. [2024-06-04 15:03:41,017 INFO L125 PetriNetUnfolderBase]: For 395088/395104 co-relation queries the response was YES. [2024-06-04 15:03:41,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103924 conditions, 17169 events. 12480/17169 cut-off events. For 395088/395104 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 93442 event pairs, 4696 based on Foata normal form. 62/17220 useless extension candidates. Maximal degree in co-relation 103870. Up to 15366 conditions per place. [2024-06-04 15:03:41,205 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 135 selfloop transitions, 133 changer transitions 0/274 dead transitions. [2024-06-04 15:03:41,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 274 transitions, 3678 flow [2024-06-04 15:03:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:03:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:03:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-04 15:03:41,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-04 15:03:41,207 INFO L175 Difference]: Start difference. First operand has 126 places, 216 transitions, 2654 flow. Second operand 8 states and 210 transitions. [2024-06-04 15:03:41,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 274 transitions, 3678 flow [2024-06-04 15:03:41,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 274 transitions, 3586 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:03:41,650 INFO L231 Difference]: Finished difference. Result has 128 places, 220 transitions, 2922 flow [2024-06-04 15:03:41,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2922, PETRI_PLACES=128, PETRI_TRANSITIONS=220} [2024-06-04 15:03:41,650 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-04 15:03:41,650 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 220 transitions, 2922 flow [2024-06-04 15:03:41,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:03:41,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:41,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:41,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:03:41,651 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:03:41,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash -896431823, now seen corresponding path program 1 times [2024-06-04 15:03:41,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:41,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414294731] [2024-06-04 15:03:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:41,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:42,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:42,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414294731] [2024-06-04 15:03:42,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414294731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:42,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:42,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:03:42,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365516599] [2024-06-04 15:03:42,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:42,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:03:42,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:42,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:03:42,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:03:42,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:42,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 220 transitions, 2922 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 15:03:42,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:42,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:42,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:44,963 INFO L124 PetriNetUnfolderBase]: 12503/17202 cut-off events. [2024-06-04 15:03:44,963 INFO L125 PetriNetUnfolderBase]: For 426332/426348 co-relation queries the response was YES. [2024-06-04 15:03:45,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108929 conditions, 17202 events. 12503/17202 cut-off events. For 426332/426348 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 93560 event pairs, 4733 based on Foata normal form. 18/17216 useless extension candidates. Maximal degree in co-relation 108874. Up to 16855 conditions per place. [2024-06-04 15:03:45,138 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 221 selfloop transitions, 29 changer transitions 0/256 dead transitions. [2024-06-04 15:03:45,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 256 transitions, 3741 flow [2024-06-04 15:03:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:03:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:03:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-04 15:03:45,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-04 15:03:45,139 INFO L175 Difference]: Start difference. First operand has 128 places, 220 transitions, 2922 flow. Second operand 6 states and 144 transitions. [2024-06-04 15:03:45,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 256 transitions, 3741 flow [2024-06-04 15:03:45,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 256 transitions, 3423 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-04 15:03:45,635 INFO L231 Difference]: Finished difference. Result has 128 places, 227 transitions, 2809 flow [2024-06-04 15:03:45,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2616, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2809, PETRI_PLACES=128, PETRI_TRANSITIONS=227} [2024-06-04 15:03:45,635 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-04 15:03:45,635 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 227 transitions, 2809 flow [2024-06-04 15:03:45,635 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 15:03:45,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:45,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:45,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:03:45,636 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 15:03:45,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1517666943, now seen corresponding path program 2 times [2024-06-04 15:03:45,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:45,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898154023] [2024-06-04 15:03:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:45,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:46,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:46,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898154023] [2024-06-04 15:03:46,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898154023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:46,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:46,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:03:46,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55182480] [2024-06-04 15:03:46,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:46,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:03:46,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:46,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:03:46,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:03:47,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:47,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 227 transitions, 2809 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:03:47,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:47,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:47,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:49,801 INFO L124 PetriNetUnfolderBase]: 12574/17289 cut-off events. [2024-06-04 15:03:49,801 INFO L125 PetriNetUnfolderBase]: For 446165/446191 co-relation queries the response was YES. [2024-06-04 15:03:49,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108345 conditions, 17289 events. 12574/17289 cut-off events. For 446165/446191 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 93909 event pairs, 4719 based on Foata normal form. 28/17280 useless extension candidates. Maximal degree in co-relation 108289. Up to 15821 conditions per place. [2024-06-04 15:03:49,947 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 125 selfloop transitions, 148 changer transitions 0/279 dead transitions. [2024-06-04 15:03:49,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 279 transitions, 3771 flow [2024-06-04 15:03:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:03:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:03:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-04 15:03:49,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47877358490566035 [2024-06-04 15:03:49,949 INFO L175 Difference]: Start difference. First operand has 128 places, 227 transitions, 2809 flow. Second operand 8 states and 203 transitions. [2024-06-04 15:03:49,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 279 transitions, 3771 flow [2024-06-04 15:03:50,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 279 transitions, 3443 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 15:03:50,638 INFO L231 Difference]: Finished difference. Result has 130 places, 231 transitions, 2875 flow [2024-06-04 15:03:50,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2875, PETRI_PLACES=130, PETRI_TRANSITIONS=231} [2024-06-04 15:03:50,639 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2024-06-04 15:03:50,639 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 231 transitions, 2875 flow [2024-06-04 15:03:50,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:03:50,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:50,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:50,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:03:50,640 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 15:03:50,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1509096063, now seen corresponding path program 3 times [2024-06-04 15:03:50,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:50,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462143367] [2024-06-04 15:03:50,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:50,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:51,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:51,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462143367] [2024-06-04 15:03:51,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462143367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:51,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:51,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:03:51,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64535129] [2024-06-04 15:03:51,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:51,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:03:51,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:51,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:03:51,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:03:51,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:51,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 231 transitions, 2875 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:03:51,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:51,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:51,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:54,632 INFO L124 PetriNetUnfolderBase]: 12684/17443 cut-off events. [2024-06-04 15:03:54,632 INFO L125 PetriNetUnfolderBase]: For 484825/484851 co-relation queries the response was YES. [2024-06-04 15:03:54,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113910 conditions, 17443 events. 12684/17443 cut-off events. For 484825/484851 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 94833 event pairs, 4282 based on Foata normal form. 28/17434 useless extension candidates. Maximal degree in co-relation 113854. Up to 15374 conditions per place. [2024-06-04 15:03:54,788 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 124 selfloop transitions, 163 changer transitions 0/293 dead transitions. [2024-06-04 15:03:54,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 293 transitions, 4113 flow [2024-06-04 15:03:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:03:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:03:54,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-04 15:03:54,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-04 15:03:54,790 INFO L175 Difference]: Start difference. First operand has 130 places, 231 transitions, 2875 flow. Second operand 8 states and 210 transitions. [2024-06-04 15:03:54,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 293 transitions, 4113 flow [2024-06-04 15:03:55,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 293 transitions, 3753 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-04 15:03:55,310 INFO L231 Difference]: Finished difference. Result has 132 places, 239 transitions, 3032 flow [2024-06-04 15:03:55,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3032, PETRI_PLACES=132, PETRI_TRANSITIONS=239} [2024-06-04 15:03:55,310 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-06-04 15:03:55,310 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 239 transitions, 3032 flow [2024-06-04 15:03:55,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:03:55,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:03:55,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:03:55,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:03:55,311 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-04 15:03:55,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:03:55,311 INFO L85 PathProgramCache]: Analyzing trace with hash -827617903, now seen corresponding path program 4 times [2024-06-04 15:03:55,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:03:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121926679] [2024-06-04 15:03:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:03:55,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:03:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:03:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:03:56,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:03:56,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121926679] [2024-06-04 15:03:56,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121926679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:03:56,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:03:56,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:03:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747190155] [2024-06-04 15:03:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:03:56,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:03:56,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:03:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:03:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:03:56,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:03:56,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 239 transitions, 3032 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:03:56,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:03:56,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:03:56,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:03:59,317 INFO L124 PetriNetUnfolderBase]: 12665/17408 cut-off events. [2024-06-04 15:03:59,317 INFO L125 PetriNetUnfolderBase]: For 527507/527525 co-relation queries the response was YES. [2024-06-04 15:03:59,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116809 conditions, 17408 events. 12665/17408 cut-off events. For 527507/527525 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 94594 event pairs, 4747 based on Foata normal form. 20/17391 useless extension candidates. Maximal degree in co-relation 116752. Up to 15946 conditions per place. [2024-06-04 15:03:59,464 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 142 selfloop transitions, 140 changer transitions 0/288 dead transitions. [2024-06-04 15:03:59,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 288 transitions, 4046 flow [2024-06-04 15:03:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:03:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:03:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-04 15:03:59,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-06-04 15:03:59,466 INFO L175 Difference]: Start difference. First operand has 132 places, 239 transitions, 3032 flow. Second operand 8 states and 204 transitions. [2024-06-04 15:03:59,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 288 transitions, 4046 flow [2024-06-04 15:04:00,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 288 transitions, 3597 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-04 15:04:00,193 INFO L231 Difference]: Finished difference. Result has 134 places, 239 transitions, 2875 flow [2024-06-04 15:04:00,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2875, PETRI_PLACES=134, PETRI_TRANSITIONS=239} [2024-06-04 15:04:00,194 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-04 15:04:00,194 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 239 transitions, 2875 flow [2024-06-04 15:04:00,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:04:00,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:00,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:00,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:04:00,194 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 15:04:00,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:00,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1613011747, now seen corresponding path program 2 times [2024-06-04 15:04:00,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:00,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863617781] [2024-06-04 15:04:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:00,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:01,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:01,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863617781] [2024-06-04 15:04:01,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863617781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:01,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:01,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:04:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084796506] [2024-06-04 15:04:01,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:04:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:01,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:04:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:04:01,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:04:01,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 239 transitions, 2875 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 15:04:01,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:01,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:04:01,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:03,749 INFO L124 PetriNetUnfolderBase]: 12654/17423 cut-off events. [2024-06-04 15:04:03,749 INFO L125 PetriNetUnfolderBase]: For 531969/531993 co-relation queries the response was YES. [2024-06-04 15:04:03,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115400 conditions, 17423 events. 12654/17423 cut-off events. For 531969/531993 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 94933 event pairs, 4738 based on Foata normal form. 23/17439 useless extension candidates. Maximal degree in co-relation 115343. Up to 17074 conditions per place. [2024-06-04 15:04:03,914 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 226 selfloop transitions, 29 changer transitions 0/261 dead transitions. [2024-06-04 15:04:03,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 261 transitions, 3467 flow [2024-06-04 15:04:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:04:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:04:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-04 15:04:03,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276729559748428 [2024-06-04 15:04:03,916 INFO L175 Difference]: Start difference. First operand has 134 places, 239 transitions, 2875 flow. Second operand 6 states and 136 transitions. [2024-06-04 15:04:03,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 261 transitions, 3467 flow [2024-06-04 15:04:04,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 261 transitions, 3108 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-04 15:04:04,394 INFO L231 Difference]: Finished difference. Result has 133 places, 239 transitions, 2586 flow [2024-06-04 15:04:04,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2516, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2586, PETRI_PLACES=133, PETRI_TRANSITIONS=239} [2024-06-04 15:04:04,395 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 77 predicate places. [2024-06-04 15:04:04,395 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 239 transitions, 2586 flow [2024-06-04 15:04:04,395 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 15:04:04,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:04,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:04,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:04:04,396 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 15:04:04,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash -179788045, now seen corresponding path program 1 times [2024-06-04 15:04:04,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436939801] [2024-06-04 15:04:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:05,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:05,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436939801] [2024-06-04 15:04:05,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436939801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:05,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:05,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:04:05,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131909674] [2024-06-04 15:04:05,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:05,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:04:05,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:05,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:04:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:04:05,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:04:05,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 239 transitions, 2586 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 15:04:05,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:05,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:04:05,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:08,018 INFO L124 PetriNetUnfolderBase]: 11268/15917 cut-off events. [2024-06-04 15:04:08,019 INFO L125 PetriNetUnfolderBase]: For 477146/477154 co-relation queries the response was YES. [2024-06-04 15:04:08,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103247 conditions, 15917 events. 11268/15917 cut-off events. For 477146/477154 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 89943 event pairs, 4125 based on Foata normal form. 8/15896 useless extension candidates. Maximal degree in co-relation 103189. Up to 15224 conditions per place. [2024-06-04 15:04:08,144 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 234 selfloop transitions, 25 changer transitions 0/266 dead transitions. [2024-06-04 15:04:08,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 266 transitions, 3329 flow [2024-06-04 15:04:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:04:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:04:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-04 15:04:08,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46540880503144655 [2024-06-04 15:04:08,145 INFO L175 Difference]: Start difference. First operand has 133 places, 239 transitions, 2586 flow. Second operand 6 states and 148 transitions. [2024-06-04 15:04:08,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 266 transitions, 3329 flow [2024-06-04 15:04:08,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 266 transitions, 3248 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 15:04:08,543 INFO L231 Difference]: Finished difference. Result has 134 places, 243 transitions, 2619 flow [2024-06-04 15:04:08,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2619, PETRI_PLACES=134, PETRI_TRANSITIONS=243} [2024-06-04 15:04:08,544 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-04 15:04:08,544 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 243 transitions, 2619 flow [2024-06-04 15:04:08,544 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 15:04:08,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:08,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:04:08,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:04:08,544 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 15:04:08,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1613005795, now seen corresponding path program 2 times [2024-06-04 15:04:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:08,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679824671] [2024-06-04 15:04:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:08,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679824671] [2024-06-04 15:04:09,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679824671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:09,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:09,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:04:09,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644439018] [2024-06-04 15:04:09,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:09,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:04:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:04:09,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:04:09,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-04 15:04:09,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 243 transitions, 2619 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 15:04:09,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:09,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-04 15:04:09,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:04:11,855 INFO L124 PetriNetUnfolderBase]: 11222/15842 cut-off events. [2024-06-04 15:04:11,855 INFO L125 PetriNetUnfolderBase]: For 502377/502379 co-relation queries the response was YES. [2024-06-04 15:04:11,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103883 conditions, 15842 events. 11222/15842 cut-off events. For 502377/502379 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 89431 event pairs, 4137 based on Foata normal form. 2/15810 useless extension candidates. Maximal degree in co-relation 103824. Up to 15162 conditions per place. [2024-06-04 15:04:12,098 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 228 selfloop transitions, 26 changer transitions 0/261 dead transitions. [2024-06-04 15:04:12,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 261 transitions, 3183 flow [2024-06-04 15:04:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:04:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:04:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-04 15:04:12,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-04 15:04:12,099 INFO L175 Difference]: Start difference. First operand has 134 places, 243 transitions, 2619 flow. Second operand 6 states and 144 transitions. [2024-06-04 15:04:12,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 261 transitions, 3183 flow [2024-06-04 15:04:12,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 261 transitions, 3128 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-04 15:04:12,631 INFO L231 Difference]: Finished difference. Result has 137 places, 243 transitions, 2625 flow [2024-06-04 15:04:12,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2564, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2625, PETRI_PLACES=137, PETRI_TRANSITIONS=243} [2024-06-04 15:04:12,631 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-04 15:04:12,631 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 243 transitions, 2625 flow [2024-06-04 15:04:12,632 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 15:04:12,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:04:12,632 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 15:04:12,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:04:12,632 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 15:04:12,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:04:12,633 INFO L85 PathProgramCache]: Analyzing trace with hash -356657717, now seen corresponding path program 1 times [2024-06-04 15:04:12,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:04:12,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972903063] [2024-06-04 15:04:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:04:12,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:04:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:04:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:04:13,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:04:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972903063] [2024-06-04 15:04:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972903063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:04:13,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:04:13,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:04:13,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156258718] [2024-06-04 15:04:13,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:04:13,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:04:13,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:04:13,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:04:13,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:04:13,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-04 15:04:13,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 243 transitions, 2625 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 15:04:13,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:04:13,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-04 15:04:13,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand