./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix001.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix001.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix001.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix001.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:48:49,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:48:49,780 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:48:49,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:48:49,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:48:49,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:48:49,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:48:49,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:48:49,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:48:49,833 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:48:49,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:48:49,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:48:49,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:48:49,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:48:49,838 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:48:49,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:48:49,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:48:49,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:48:49,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:48:49,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:48:49,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:48:49,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:48:49,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:48:49,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:48:49,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:48:49,841 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:48:49,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:48:49,841 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:48:49,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:48:49,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:48:49,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:48:49,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:48:49,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:48:49,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:48:49,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:48:49,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:48:49,844 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:48:49,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:48:49,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:48:49,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:48:49,850 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:48:49,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:48:49,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:48:49,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:48:50,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:48:50,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:48:50,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:48:50,045 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:48:50,046 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:48:50,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix001.opt.yml/witness.yml [2024-06-28 02:48:50,197 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:48:50,197 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:48:50,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix001.opt.i [2024-06-28 02:48:51,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:48:51,455 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:48:51,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix001.opt.i [2024-06-28 02:48:51,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4be9386/010da17b257f4e20b5cb1278f26e2a6a/FLAG53a23a0e4 [2024-06-28 02:48:51,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4be9386/010da17b257f4e20b5cb1278f26e2a6a [2024-06-28 02:48:51,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:48:51,482 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:48:51,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:48:51,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:48:51,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:48:51,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:50" (1/2) ... [2024-06-28 02:48:51,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0b7dab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:51, skipping insertion in model container [2024-06-28 02:48:51,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:50" (1/2) ... [2024-06-28 02:48:51,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2be4a564 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:51, skipping insertion in model container [2024-06-28 02:48:51,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:48:51" (2/2) ... [2024-06-28 02:48:51,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0b7dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:51, skipping insertion in model container [2024-06-28 02:48:51,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:48:51" (2/2) ... [2024-06-28 02:48:51,493 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:48:51,566 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:48:51,567 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0) [2024-06-28 02:48:51,567 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0) [2024-06-28 02:48:51,567 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0) [2024-06-28 02:48:51,568 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:48:51,568 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 02:48:51,603 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:48:51,882 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:48:51,889 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:48:51,992 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:48:52,028 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:48:52,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52 WrapperNode [2024-06-28 02:48:52,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:48:52,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:48:52,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:48:52,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:48:52,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,085 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2024-06-28 02:48:52,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:48:52,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:48:52,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:48:52,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:48:52,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,118 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]. [2024-06-28 02:48:52,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,136 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:48:52,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:48:52,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:48:52,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:48:52,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (1/1) ... [2024-06-28 02:48:52,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:48:52,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:48:52,206 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) [2024-06-28 02:48:52,254 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 [2024-06-28 02:48:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:48:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:48:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:48:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:48:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:48:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:48:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:48:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:48:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:48:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:48:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:48:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:48:52,285 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:48:52,378 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:48:52,379 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:48:52,776 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:48:52,776 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:48:52,920 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:48:52,921 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:48:52,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:48:52 BoogieIcfgContainer [2024-06-28 02:48:52,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:48:52,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:48:52,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:48:52,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:48:52,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:50" (1/4) ... [2024-06-28 02:48:52,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3190ae67 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:48:52, skipping insertion in model container [2024-06-28 02:48:52,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:48:51" (2/4) ... [2024-06-28 02:48:52,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3190ae67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:48:52, skipping insertion in model container [2024-06-28 02:48:52,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:52" (3/4) ... [2024-06-28 02:48:52,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3190ae67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:48:52, skipping insertion in model container [2024-06-28 02:48:52,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:48:52" (4/4) ... [2024-06-28 02:48:52,929 INFO L112 eAbstractionObserver]: Analyzing ICFG mix001.opt.i [2024-06-28 02:48:52,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:48:52,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:48:52,942 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:48:52,980 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:48:53,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 02:48:53,037 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-28 02:48:53,038 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:48:53,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:48:53,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 02:48:53,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-28 02:48:53,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:48:53,059 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;@732a2c1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:48:53,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:48:53,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:48:53,063 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:48:53,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:48:53,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:53,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:48:53,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:53,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:53,067 INFO L85 PathProgramCache]: Analyzing trace with hash 402627273, now seen corresponding path program 1 times [2024-06-28 02:48:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:53,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093278508] [2024-06-28 02:48:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:54,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:54,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093278508] [2024-06-28 02:48:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093278508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:54,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:54,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:48:54,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868424870] [2024-06-28 02:48:54,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:54,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:48:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:48:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:48:54,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2024-06-28 02:48:54,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:54,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:54,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2024-06-28 02:48:54,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:54,479 INFO L124 PetriNetUnfolderBase]: 869/1413 cut-off events. [2024-06-28 02:48:54,480 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 02:48:54,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2791 conditions, 1413 events. 869/1413 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7439 event pairs, 566 based on Foata normal form. 1/1349 useless extension candidates. Maximal degree in co-relation 2779. Up to 1315 conditions per place. [2024-06-28 02:48:54,490 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 30 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 02:48:54,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 171 flow [2024-06-28 02:48:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:48:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:48:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-28 02:48:54,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6589147286821705 [2024-06-28 02:48:54,501 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 85 transitions. [2024-06-28 02:48:54,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 171 flow [2024-06-28 02:48:54,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:54,504 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-28 02:48:54,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 02:48:54,508 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-28 02:48:54,508 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-28 02:48:54,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:54,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:54,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:54,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:48:54,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:54,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:54,510 INFO L85 PathProgramCache]: Analyzing trace with hash 378898490, now seen corresponding path program 1 times [2024-06-28 02:48:54,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:54,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877243837] [2024-06-28 02:48:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:55,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:55,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877243837] [2024-06-28 02:48:55,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877243837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:55,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:55,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:48:55,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386474839] [2024-06-28 02:48:55,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:55,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:48:55,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:48:55,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:48:55,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 02:48:55,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:55,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:55,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 02:48:55,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:55,548 INFO L124 PetriNetUnfolderBase]: 1280/1980 cut-off events. [2024-06-28 02:48:55,548 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2024-06-28 02:48:55,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4501 conditions, 1980 events. 1280/1980 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10119 event pairs, 750 based on Foata normal form. 3/1970 useless extension candidates. Maximal degree in co-relation 4489. Up to 1897 conditions per place. [2024-06-28 02:48:55,558 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 39 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 02:48:55,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 242 flow [2024-06-28 02:48:55,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:48:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:48:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-06-28 02:48:55,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-06-28 02:48:55,560 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 105 transitions. [2024-06-28 02:48:55,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 242 flow [2024-06-28 02:48:55,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:48:55,562 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-28 02:48:55,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-28 02:48:55,563 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-28 02:48:55,563 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-28 02:48:55,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:55,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:55,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:55,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:48:55,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:55,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1139047968, now seen corresponding path program 1 times [2024-06-28 02:48:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:55,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499251194] [2024-06-28 02:48:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:55,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:56,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:56,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499251194] [2024-06-28 02:48:56,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499251194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:56,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:56,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:48:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485112401] [2024-06-28 02:48:56,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:56,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:48:56,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:48:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:48:56,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 02:48:56,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:56,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:56,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 02:48:56,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:56,778 INFO L124 PetriNetUnfolderBase]: 1274/2001 cut-off events. [2024-06-28 02:48:56,778 INFO L125 PetriNetUnfolderBase]: For 1129/1129 co-relation queries the response was YES. [2024-06-28 02:48:56,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5030 conditions, 2001 events. 1274/2001 cut-off events. For 1129/1129 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10378 event pairs, 608 based on Foata normal form. 3/2000 useless extension candidates. Maximal degree in co-relation 5016. Up to 1873 conditions per place. [2024-06-28 02:48:56,787 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 46 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-28 02:48:56,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 320 flow [2024-06-28 02:48:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:48:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:48:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-28 02:48:56,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 02:48:56,789 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 5 states and 129 transitions. [2024-06-28 02:48:56,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 320 flow [2024-06-28 02:48:56,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:56,791 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 176 flow [2024-06-28 02:48:56,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 02:48:56,792 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2024-06-28 02:48:56,792 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 176 flow [2024-06-28 02:48:56,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:56,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:56,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:56,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:48:56,793 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:56,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1246507511, now seen corresponding path program 1 times [2024-06-28 02:48:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:56,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140993265] [2024-06-28 02:48:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:57,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:57,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140993265] [2024-06-28 02:48:57,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140993265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:57,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:57,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:48:57,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707509838] [2024-06-28 02:48:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:57,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:48:57,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:48:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:48:57,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:48:57,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 176 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) [2024-06-28 02:48:57,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:57,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:48:57,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:57,886 INFO L124 PetriNetUnfolderBase]: 1546/2453 cut-off events. [2024-06-28 02:48:57,887 INFO L125 PetriNetUnfolderBase]: For 2274/2274 co-relation queries the response was YES. [2024-06-28 02:48:57,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6602 conditions, 2453 events. 1546/2453 cut-off events. For 2274/2274 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12789 event pairs, 853 based on Foata normal form. 2/2408 useless extension candidates. Maximal degree in co-relation 6586. Up to 2282 conditions per place. [2024-06-28 02:48:57,898 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 41 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-28 02:48:57,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 316 flow [2024-06-28 02:48:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:48:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:48:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-28 02:48:57,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930232558139535 [2024-06-28 02:48:57,909 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 176 flow. Second operand 5 states and 106 transitions. [2024-06-28 02:48:57,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 316 flow [2024-06-28 02:48:57,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 292 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:57,911 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 196 flow [2024-06-28 02:48:57,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 02:48:57,912 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-06-28 02:48:57,912 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 196 flow [2024-06-28 02:48:57,912 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) [2024-06-28 02:48:57,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:57,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:57,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:48:57,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:57,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1159347704, now seen corresponding path program 1 times [2024-06-28 02:48:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:57,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883720076] [2024-06-28 02:48:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:57,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:59,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883720076] [2024-06-28 02:48:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883720076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:59,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:59,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307099514] [2024-06-28 02:48:59,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:59,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 02:48:59,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:59,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:59,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 02:48:59,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:59,792 INFO L124 PetriNetUnfolderBase]: 1763/2718 cut-off events. [2024-06-28 02:48:59,793 INFO L125 PetriNetUnfolderBase]: For 4298/4298 co-relation queries the response was YES. [2024-06-28 02:48:59,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7977 conditions, 2718 events. 1763/2718 cut-off events. For 4298/4298 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13851 event pairs, 617 based on Foata normal form. 6/2709 useless extension candidates. Maximal degree in co-relation 7960. Up to 2517 conditions per place. [2024-06-28 02:48:59,807 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 60 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2024-06-28 02:48:59,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 450 flow [2024-06-28 02:48:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:48:59,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5548172757475083 [2024-06-28 02:48:59,808 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 196 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:48:59,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 450 flow [2024-06-28 02:48:59,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 430 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:59,811 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 243 flow [2024-06-28 02:48:59,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-06-28 02:48:59,812 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2024-06-28 02:48:59,812 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 243 flow [2024-06-28 02:48:59,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:59,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:59,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:59,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:48:59,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:48:59,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:59,813 INFO L85 PathProgramCache]: Analyzing trace with hash 19203124, now seen corresponding path program 1 times [2024-06-28 02:48:59,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:59,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582581160] [2024-06-28 02:48:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:59,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:00,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:00,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582581160] [2024-06-28 02:49:00,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582581160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:00,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:00,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11119477] [2024-06-28 02:49:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:00,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:00,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:00,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:00,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:49:00,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 243 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:00,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:00,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:49:00,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:01,117 INFO L124 PetriNetUnfolderBase]: 1517/2438 cut-off events. [2024-06-28 02:49:01,117 INFO L125 PetriNetUnfolderBase]: For 5121/5121 co-relation queries the response was YES. [2024-06-28 02:49:01,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7626 conditions, 2438 events. 1517/2438 cut-off events. For 5121/5121 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12847 event pairs, 653 based on Foata normal form. 4/2432 useless extension candidates. Maximal degree in co-relation 7607. Up to 2235 conditions per place. [2024-06-28 02:49:01,131 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 50 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-06-28 02:49:01,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 425 flow [2024-06-28 02:49:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-28 02:49:01,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4844961240310077 [2024-06-28 02:49:01,133 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 243 flow. Second operand 6 states and 125 transitions. [2024-06-28 02:49:01,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 425 flow [2024-06-28 02:49:01,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 386 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:01,137 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 260 flow [2024-06-28 02:49:01,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 02:49:01,140 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2024-06-28 02:49:01,140 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 260 flow [2024-06-28 02:49:01,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:01,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:01,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:01,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:49:01,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:01,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:01,142 INFO L85 PathProgramCache]: Analyzing trace with hash -408779306, now seen corresponding path program 1 times [2024-06-28 02:49:01,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:01,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509618054] [2024-06-28 02:49:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:01,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:01,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:01,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509618054] [2024-06-28 02:49:01,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509618054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:01,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:01,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265407506] [2024-06-28 02:49:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:01,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:01,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:01,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:01,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:01,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:01,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:01,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:01,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:01,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:02,302 INFO L124 PetriNetUnfolderBase]: 1880/2837 cut-off events. [2024-06-28 02:49:02,303 INFO L125 PetriNetUnfolderBase]: For 8266/8272 co-relation queries the response was YES. [2024-06-28 02:49:02,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9601 conditions, 2837 events. 1880/2837 cut-off events. For 8266/8272 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13942 event pairs, 777 based on Foata normal form. 6/2841 useless extension candidates. Maximal degree in co-relation 9580. Up to 2734 conditions per place. [2024-06-28 02:49:02,324 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 58 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-28 02:49:02,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 526 flow [2024-06-28 02:49:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 02:49:02,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-06-28 02:49:02,326 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 260 flow. Second operand 6 states and 121 transitions. [2024-06-28 02:49:02,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 526 flow [2024-06-28 02:49:02,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 494 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:02,330 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 318 flow [2024-06-28 02:49:02,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-06-28 02:49:02,331 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-06-28 02:49:02,331 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 318 flow [2024-06-28 02:49:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:02,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:02,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:02,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:49:02,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:02,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash 628357624, now seen corresponding path program 2 times [2024-06-28 02:49:02,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876652088] [2024-06-28 02:49:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:03,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876652088] [2024-06-28 02:49:03,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876652088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:03,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:03,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:03,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143010668] [2024-06-28 02:49:03,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:03,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:03,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:03,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:03,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:03,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:03,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 318 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:03,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:03,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:03,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:03,725 INFO L124 PetriNetUnfolderBase]: 1875/2831 cut-off events. [2024-06-28 02:49:03,725 INFO L125 PetriNetUnfolderBase]: For 10712/10725 co-relation queries the response was YES. [2024-06-28 02:49:03,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10177 conditions, 2831 events. 1875/2831 cut-off events. For 10712/10725 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13937 event pairs, 780 based on Foata normal form. 12/2841 useless extension candidates. Maximal degree in co-relation 10155. Up to 2729 conditions per place. [2024-06-28 02:49:03,740 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 53 selfloop transitions, 16 changer transitions 0/74 dead transitions. [2024-06-28 02:49:03,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 494 flow [2024-06-28 02:49:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 02:49:03,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 02:49:03,742 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 318 flow. Second operand 6 states and 116 transitions. [2024-06-28 02:49:03,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 494 flow [2024-06-28 02:49:03,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 458 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 02:49:03,747 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 322 flow [2024-06-28 02:49:03,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 02:49:03,747 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-06-28 02:49:03,748 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 322 flow [2024-06-28 02:49:03,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:03,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:03,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:03,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:49:03,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:03,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1745515442, now seen corresponding path program 1 times [2024-06-28 02:49:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:03,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451458614] [2024-06-28 02:49:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:03,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:04,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:04,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451458614] [2024-06-28 02:49:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451458614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:04,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491625812] [2024-06-28 02:49:04,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:04,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:04,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:04,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:04,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:04,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:04,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:04,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:04,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:05,067 INFO L124 PetriNetUnfolderBase]: 1972/2980 cut-off events. [2024-06-28 02:49:05,067 INFO L125 PetriNetUnfolderBase]: For 13141/13151 co-relation queries the response was YES. [2024-06-28 02:49:05,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11100 conditions, 2980 events. 1972/2980 cut-off events. For 13141/13151 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14660 event pairs, 755 based on Foata normal form. 10/2988 useless extension candidates. Maximal degree in co-relation 11076. Up to 2769 conditions per place. [2024-06-28 02:49:05,081 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 74 selfloop transitions, 41 changer transitions 0/120 dead transitions. [2024-06-28 02:49:05,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 120 transitions, 942 flow [2024-06-28 02:49:05,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 02:49:05,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-06-28 02:49:05,082 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 322 flow. Second operand 8 states and 165 transitions. [2024-06-28 02:49:05,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 120 transitions, 942 flow [2024-06-28 02:49:05,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 120 transitions, 877 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:05,089 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 604 flow [2024-06-28 02:49:05,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2024-06-28 02:49:05,090 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-06-28 02:49:05,090 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 604 flow [2024-06-28 02:49:05,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:05,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:05,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:05,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:49:05,090 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:05,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:05,091 INFO L85 PathProgramCache]: Analyzing trace with hash 212595122, now seen corresponding path program 2 times [2024-06-28 02:49:05,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:05,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444242399] [2024-06-28 02:49:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:05,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:05,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:05,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444242399] [2024-06-28 02:49:05,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444242399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:05,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:05,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:05,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503333895] [2024-06-28 02:49:05,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:05,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:05,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:05,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:05,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:05,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:05,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:05,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:05,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:06,484 INFO L124 PetriNetUnfolderBase]: 1988/3002 cut-off events. [2024-06-28 02:49:06,485 INFO L125 PetriNetUnfolderBase]: For 16689/16703 co-relation queries the response was YES. [2024-06-28 02:49:06,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12115 conditions, 3002 events. 1988/3002 cut-off events. For 16689/16703 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14773 event pairs, 760 based on Foata normal form. 16/3016 useless extension candidates. Maximal degree in co-relation 12087. Up to 2787 conditions per place. [2024-06-28 02:49:06,500 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 66 selfloop transitions, 49 changer transitions 0/120 dead transitions. [2024-06-28 02:49:06,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 120 transitions, 1032 flow [2024-06-28 02:49:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 02:49:06,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717607973421927 [2024-06-28 02:49:06,501 INFO L175 Difference]: Start difference. First operand has 70 places, 86 transitions, 604 flow. Second operand 7 states and 142 transitions. [2024-06-28 02:49:06,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 120 transitions, 1032 flow [2024-06-28 02:49:06,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 120 transitions, 998 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 02:49:06,511 INFO L231 Difference]: Finished difference. Result has 75 places, 92 transitions, 753 flow [2024-06-28 02:49:06,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=753, PETRI_PLACES=75, PETRI_TRANSITIONS=92} [2024-06-28 02:49:06,512 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-06-28 02:49:06,512 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 92 transitions, 753 flow [2024-06-28 02:49:06,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:06,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:06,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:06,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:49:06,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:06,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:06,513 INFO L85 PathProgramCache]: Analyzing trace with hash 212745069, now seen corresponding path program 1 times [2024-06-28 02:49:06,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:06,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76342904] [2024-06-28 02:49:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:06,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:07,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:07,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76342904] [2024-06-28 02:49:07,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76342904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:07,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:07,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:07,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738189884] [2024-06-28 02:49:07,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:07,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:07,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:07,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:07,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 92 transitions, 753 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:07,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:07,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:07,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:07,943 INFO L124 PetriNetUnfolderBase]: 2010/3039 cut-off events. [2024-06-28 02:49:07,943 INFO L125 PetriNetUnfolderBase]: For 19411/19419 co-relation queries the response was YES. [2024-06-28 02:49:07,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12587 conditions, 3039 events. 2010/3039 cut-off events. For 19411/19419 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14922 event pairs, 710 based on Foata normal form. 12/3046 useless extension candidates. Maximal degree in co-relation 12557. Up to 2832 conditions per place. [2024-06-28 02:49:07,961 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 92 selfloop transitions, 30 changer transitions 0/127 dead transitions. [2024-06-28 02:49:07,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 127 transitions, 1185 flow [2024-06-28 02:49:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 02:49:07,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2024-06-28 02:49:07,963 INFO L175 Difference]: Start difference. First operand has 75 places, 92 transitions, 753 flow. Second operand 7 states and 143 transitions. [2024-06-28 02:49:07,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 127 transitions, 1185 flow [2024-06-28 02:49:07,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 127 transitions, 1061 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:07,980 INFO L231 Difference]: Finished difference. Result has 77 places, 98 transitions, 764 flow [2024-06-28 02:49:07,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=764, PETRI_PLACES=77, PETRI_TRANSITIONS=98} [2024-06-28 02:49:07,981 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-06-28 02:49:07,981 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 98 transitions, 764 flow [2024-06-28 02:49:07,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:07,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:07,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:07,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:49:07,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:07,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:07,982 INFO L85 PathProgramCache]: Analyzing trace with hash 297779230, now seen corresponding path program 3 times [2024-06-28 02:49:07,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:07,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485609588] [2024-06-28 02:49:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:07,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:08,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485609588] [2024-06-28 02:49:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485609588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:08,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:08,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365255285] [2024-06-28 02:49:08,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:08,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:08,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:08,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:08,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 764 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:08,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:08,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:08,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:09,438 INFO L124 PetriNetUnfolderBase]: 2033/3073 cut-off events. [2024-06-28 02:49:09,439 INFO L125 PetriNetUnfolderBase]: For 20435/20438 co-relation queries the response was YES. [2024-06-28 02:49:09,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13006 conditions, 3073 events. 2033/3073 cut-off events. For 20435/20438 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15146 event pairs, 740 based on Foata normal form. 7/3078 useless extension candidates. Maximal degree in co-relation 12976. Up to 2845 conditions per place. [2024-06-28 02:49:09,453 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 72 selfloop transitions, 55 changer transitions 0/132 dead transitions. [2024-06-28 02:49:09,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 132 transitions, 1240 flow [2024-06-28 02:49:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:09,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 02:49:09,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:49:09,455 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 764 flow. Second operand 7 states and 140 transitions. [2024-06-28 02:49:09,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 132 transitions, 1240 flow [2024-06-28 02:49:09,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 1201 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 02:49:09,470 INFO L231 Difference]: Finished difference. Result has 81 places, 107 transitions, 952 flow [2024-06-28 02:49:09,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=952, PETRI_PLACES=81, PETRI_TRANSITIONS=107} [2024-06-28 02:49:09,472 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2024-06-28 02:49:09,472 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 107 transitions, 952 flow [2024-06-28 02:49:09,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:09,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:09,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:09,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:49:09,473 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:09,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:09,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1995748686, now seen corresponding path program 4 times [2024-06-28 02:49:09,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:09,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511549460] [2024-06-28 02:49:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:09,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:10,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:10,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511549460] [2024-06-28 02:49:10,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511549460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:10,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:10,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:10,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316198402] [2024-06-28 02:49:10,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:10,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:10,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:10,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:10,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:10,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:10,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 107 transitions, 952 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:10,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:10,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:10,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:10,828 INFO L124 PetriNetUnfolderBase]: 2022/3061 cut-off events. [2024-06-28 02:49:10,829 INFO L125 PetriNetUnfolderBase]: For 23406/23411 co-relation queries the response was YES. [2024-06-28 02:49:10,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13333 conditions, 3061 events. 2022/3061 cut-off events. For 23406/23411 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15031 event pairs, 744 based on Foata normal form. 8/3063 useless extension candidates. Maximal degree in co-relation 13301. Up to 2834 conditions per place. [2024-06-28 02:49:10,845 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 67 selfloop transitions, 55 changer transitions 0/127 dead transitions. [2024-06-28 02:49:10,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 127 transitions, 1264 flow [2024-06-28 02:49:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 02:49:10,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-28 02:49:10,846 INFO L175 Difference]: Start difference. First operand has 81 places, 107 transitions, 952 flow. Second operand 7 states and 135 transitions. [2024-06-28 02:49:10,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 127 transitions, 1264 flow [2024-06-28 02:49:10,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 1107 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:10,864 INFO L231 Difference]: Finished difference. Result has 84 places, 107 transitions, 920 flow [2024-06-28 02:49:10,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=920, PETRI_PLACES=84, PETRI_TRANSITIONS=107} [2024-06-28 02:49:10,865 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2024-06-28 02:49:10,865 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 107 transitions, 920 flow [2024-06-28 02:49:10,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:10,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:10,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:10,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:49:10,865 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:10,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1274110517, now seen corresponding path program 2 times [2024-06-28 02:49:10,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:10,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085296025] [2024-06-28 02:49:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:10,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085296025] [2024-06-28 02:49:11,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085296025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:11,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:11,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:11,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952489334] [2024-06-28 02:49:11,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:11,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:11,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:11,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:11,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:11,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 107 transitions, 920 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:11,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:11,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:11,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:12,286 INFO L124 PetriNetUnfolderBase]: 2044/3092 cut-off events. [2024-06-28 02:49:12,286 INFO L125 PetriNetUnfolderBase]: For 26515/26528 co-relation queries the response was YES. [2024-06-28 02:49:12,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13688 conditions, 3092 events. 2044/3092 cut-off events. For 26515/26528 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15184 event pairs, 701 based on Foata normal form. 14/3103 useless extension candidates. Maximal degree in co-relation 13655. Up to 2869 conditions per place. [2024-06-28 02:49:12,303 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 100 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-28 02:49:12,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 138 transitions, 1360 flow [2024-06-28 02:49:12,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 02:49:12,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:49:12,305 INFO L175 Difference]: Start difference. First operand has 84 places, 107 transitions, 920 flow. Second operand 7 states and 140 transitions. [2024-06-28 02:49:12,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 138 transitions, 1360 flow [2024-06-28 02:49:12,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 138 transitions, 1181 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:12,322 INFO L231 Difference]: Finished difference. Result has 83 places, 110 transitions, 850 flow [2024-06-28 02:49:12,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=850, PETRI_PLACES=83, PETRI_TRANSITIONS=110} [2024-06-28 02:49:12,323 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2024-06-28 02:49:12,323 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 110 transitions, 850 flow [2024-06-28 02:49:12,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:12,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:12,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:12,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:49:12,323 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:12,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash 218316699, now seen corresponding path program 3 times [2024-06-28 02:49:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876511597] [2024-06-28 02:49:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:13,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:13,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876511597] [2024-06-28 02:49:13,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876511597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:13,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:13,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:13,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760000638] [2024-06-28 02:49:13,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:13,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:13,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:13,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:13,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 110 transitions, 850 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:13,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:13,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:13,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:13,743 INFO L124 PetriNetUnfolderBase]: 2034/3077 cut-off events. [2024-06-28 02:49:13,744 INFO L125 PetriNetUnfolderBase]: For 28960/28973 co-relation queries the response was YES. [2024-06-28 02:49:13,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13711 conditions, 3077 events. 2034/3077 cut-off events. For 28960/28973 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15082 event pairs, 701 based on Foata normal form. 14/3088 useless extension candidates. Maximal degree in co-relation 13678. Up to 2861 conditions per place. [2024-06-28 02:49:13,759 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 94 selfloop transitions, 35 changer transitions 0/134 dead transitions. [2024-06-28 02:49:13,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 134 transitions, 1188 flow [2024-06-28 02:49:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 02:49:13,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-28 02:49:13,762 INFO L175 Difference]: Start difference. First operand has 83 places, 110 transitions, 850 flow. Second operand 7 states and 136 transitions. [2024-06-28 02:49:13,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 134 transitions, 1188 flow [2024-06-28 02:49:13,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 1082 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:13,794 INFO L231 Difference]: Finished difference. Result has 85 places, 110 transitions, 822 flow [2024-06-28 02:49:13,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=822, PETRI_PLACES=85, PETRI_TRANSITIONS=110} [2024-06-28 02:49:13,795 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 41 predicate places. [2024-06-28 02:49:13,795 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 110 transitions, 822 flow [2024-06-28 02:49:13,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 02:49:13,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:13,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:13,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:49:13,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:13,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash -685239082, now seen corresponding path program 1 times [2024-06-28 02:49:13,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:13,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432234066] [2024-06-28 02:49:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:13,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:14,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:14,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432234066] [2024-06-28 02:49:14,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432234066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:14,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:14,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:14,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700213212] [2024-06-28 02:49:14,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:14,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:14,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:14,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:14,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:14,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 02:49:14,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 110 transitions, 822 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:14,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:14,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 02:49:14,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:15,023 INFO L124 PetriNetUnfolderBase]: 1432/2444 cut-off events. [2024-06-28 02:49:15,023 INFO L125 PetriNetUnfolderBase]: For 26303/26321 co-relation queries the response was YES. [2024-06-28 02:49:15,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10723 conditions, 2444 events. 1432/2444 cut-off events. For 26303/26321 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13787 event pairs, 585 based on Foata normal form. 19/2462 useless extension candidates. Maximal degree in co-relation 10689. Up to 2059 conditions per place. [2024-06-28 02:49:15,038 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 69 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2024-06-28 02:49:15,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 121 transitions, 1020 flow [2024-06-28 02:49:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:49:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:49:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-06-28 02:49:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069767441860465 [2024-06-28 02:49:15,041 INFO L175 Difference]: Start difference. First operand has 85 places, 110 transitions, 822 flow. Second operand 5 states and 109 transitions. [2024-06-28 02:49:15,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 121 transitions, 1020 flow [2024-06-28 02:49:15,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 937 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:15,059 INFO L231 Difference]: Finished difference. Result has 84 places, 113 transitions, 787 flow [2024-06-28 02:49:15,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=787, PETRI_PLACES=84, PETRI_TRANSITIONS=113} [2024-06-28 02:49:15,059 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2024-06-28 02:49:15,059 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 113 transitions, 787 flow [2024-06-28 02:49:15,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:15,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:15,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:15,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:49:15,060 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:15,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash -247806069, now seen corresponding path program 1 times [2024-06-28 02:49:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:15,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854345239] [2024-06-28 02:49:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:15,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:15,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854345239] [2024-06-28 02:49:15,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854345239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:15,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:15,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:15,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875251211] [2024-06-28 02:49:15,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:15,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:15,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:15,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:16,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:16,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 113 transitions, 787 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:16,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:16,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:16,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:16,704 INFO L124 PetriNetUnfolderBase]: 2042/3089 cut-off events. [2024-06-28 02:49:16,704 INFO L125 PetriNetUnfolderBase]: For 34752/34756 co-relation queries the response was YES. [2024-06-28 02:49:16,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14361 conditions, 3089 events. 2042/3089 cut-off events. For 34752/34756 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15184 event pairs, 707 based on Foata normal form. 6/3094 useless extension candidates. Maximal degree in co-relation 14326. Up to 2929 conditions per place. [2024-06-28 02:49:16,719 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 120 selfloop transitions, 24 changer transitions 0/149 dead transitions. [2024-06-28 02:49:16,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 149 transitions, 1217 flow [2024-06-28 02:49:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 02:49:16,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-28 02:49:16,721 INFO L175 Difference]: Start difference. First operand has 84 places, 113 transitions, 787 flow. Second operand 8 states and 157 transitions. [2024-06-28 02:49:16,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 149 transitions, 1217 flow [2024-06-28 02:49:16,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 149 transitions, 1191 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:49:16,743 INFO L231 Difference]: Finished difference. Result has 89 places, 116 transitions, 855 flow [2024-06-28 02:49:16,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=855, PETRI_PLACES=89, PETRI_TRANSITIONS=116} [2024-06-28 02:49:16,743 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2024-06-28 02:49:16,743 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 116 transitions, 855 flow [2024-06-28 02:49:16,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:16,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:16,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:16,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:49:16,744 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:16,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:16,744 INFO L85 PathProgramCache]: Analyzing trace with hash 636581575, now seen corresponding path program 1 times [2024-06-28 02:49:16,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:16,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206413779] [2024-06-28 02:49:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:16,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206413779] [2024-06-28 02:49:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206413779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:17,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:17,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:17,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918513313] [2024-06-28 02:49:17,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:17,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:17,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:17,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:17,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 116 transitions, 855 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:17,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:17,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:17,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:18,306 INFO L124 PetriNetUnfolderBase]: 2064/3122 cut-off events. [2024-06-28 02:49:18,307 INFO L125 PetriNetUnfolderBase]: For 39985/39989 co-relation queries the response was YES. [2024-06-28 02:49:18,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15185 conditions, 3122 events. 2064/3122 cut-off events. For 39985/39989 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15332 event pairs, 640 based on Foata normal form. 8/3125 useless extension candidates. Maximal degree in co-relation 15149. Up to 2710 conditions per place. [2024-06-28 02:49:18,324 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 88 selfloop transitions, 65 changer transitions 0/158 dead transitions. [2024-06-28 02:49:18,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 158 transitions, 1399 flow [2024-06-28 02:49:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 02:49:18,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48255813953488375 [2024-06-28 02:49:18,326 INFO L175 Difference]: Start difference. First operand has 89 places, 116 transitions, 855 flow. Second operand 8 states and 166 transitions. [2024-06-28 02:49:18,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 158 transitions, 1399 flow [2024-06-28 02:49:18,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 158 transitions, 1329 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:18,351 INFO L231 Difference]: Finished difference. Result has 91 places, 122 transitions, 995 flow [2024-06-28 02:49:18,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=995, PETRI_PLACES=91, PETRI_TRANSITIONS=122} [2024-06-28 02:49:18,352 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-06-28 02:49:18,352 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 122 transitions, 995 flow [2024-06-28 02:49:18,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:18,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:18,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:18,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:49:18,352 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:18,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1999484329, now seen corresponding path program 2 times [2024-06-28 02:49:18,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:18,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049305785] [2024-06-28 02:49:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:18,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:19,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049305785] [2024-06-28 02:49:19,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049305785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:19,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:19,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747670589] [2024-06-28 02:49:19,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:19,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:19,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:19,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:19,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 122 transitions, 995 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:19,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:19,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:19,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:19,919 INFO L124 PetriNetUnfolderBase]: 2075/3145 cut-off events. [2024-06-28 02:49:19,919 INFO L125 PetriNetUnfolderBase]: For 45325/45332 co-relation queries the response was YES. [2024-06-28 02:49:19,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16026 conditions, 3145 events. 2075/3145 cut-off events. For 45325/45332 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15561 event pairs, 691 based on Foata normal form. 8/3151 useless extension candidates. Maximal degree in co-relation 15989. Up to 2827 conditions per place. [2024-06-28 02:49:19,936 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 95 selfloop transitions, 61 changer transitions 0/161 dead transitions. [2024-06-28 02:49:19,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 161 transitions, 1561 flow [2024-06-28 02:49:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 02:49:19,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-28 02:49:19,938 INFO L175 Difference]: Start difference. First operand has 91 places, 122 transitions, 995 flow. Second operand 8 states and 161 transitions. [2024-06-28 02:49:19,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 161 transitions, 1561 flow [2024-06-28 02:49:19,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 161 transitions, 1484 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:19,963 INFO L231 Difference]: Finished difference. Result has 95 places, 128 transitions, 1136 flow [2024-06-28 02:49:19,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1136, PETRI_PLACES=95, PETRI_TRANSITIONS=128} [2024-06-28 02:49:19,964 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-06-28 02:49:19,964 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 128 transitions, 1136 flow [2024-06-28 02:49:19,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:19,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:19,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:19,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:49:19,964 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:19,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1994842513, now seen corresponding path program 2 times [2024-06-28 02:49:19,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:19,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384567384] [2024-06-28 02:49:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:19,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:20,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:20,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384567384] [2024-06-28 02:49:20,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384567384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:20,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:20,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:20,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699077639] [2024-06-28 02:49:20,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:20,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:20,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:20,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:20,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 128 transitions, 1136 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:20,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:20,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:20,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:21,551 INFO L124 PetriNetUnfolderBase]: 2129/3223 cut-off events. [2024-06-28 02:49:21,551 INFO L125 PetriNetUnfolderBase]: For 52372/52372 co-relation queries the response was YES. [2024-06-28 02:49:21,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17135 conditions, 3223 events. 2129/3223 cut-off events. For 52372/52372 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15938 event pairs, 647 based on Foata normal form. 4/3222 useless extension candidates. Maximal degree in co-relation 17096. Up to 2772 conditions per place. [2024-06-28 02:49:21,568 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 99 selfloop transitions, 66 changer transitions 0/170 dead transitions. [2024-06-28 02:49:21,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 170 transitions, 1776 flow [2024-06-28 02:49:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:21,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 02:49:21,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:49:21,570 INFO L175 Difference]: Start difference. First operand has 95 places, 128 transitions, 1136 flow. Second operand 8 states and 168 transitions. [2024-06-28 02:49:21,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 170 transitions, 1776 flow [2024-06-28 02:49:21,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 170 transitions, 1695 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:21,604 INFO L231 Difference]: Finished difference. Result has 99 places, 134 transitions, 1261 flow [2024-06-28 02:49:21,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1261, PETRI_PLACES=99, PETRI_TRANSITIONS=134} [2024-06-28 02:49:21,605 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2024-06-28 02:49:21,605 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 134 transitions, 1261 flow [2024-06-28 02:49:21,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:21,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:21,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:21,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:49:21,605 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:21,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:21,606 INFO L85 PathProgramCache]: Analyzing trace with hash 641223019, now seen corresponding path program 3 times [2024-06-28 02:49:21,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:21,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474814594] [2024-06-28 02:49:21,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:21,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:22,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:22,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474814594] [2024-06-28 02:49:22,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474814594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:22,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:22,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:22,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924015234] [2024-06-28 02:49:22,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:22,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:22,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:22,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:22,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:22,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:22,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 134 transitions, 1261 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:22,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:22,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:22,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:23,211 INFO L124 PetriNetUnfolderBase]: 2140/3244 cut-off events. [2024-06-28 02:49:23,211 INFO L125 PetriNetUnfolderBase]: For 57160/57163 co-relation queries the response was YES. [2024-06-28 02:49:23,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17726 conditions, 3244 events. 2140/3244 cut-off events. For 57160/57163 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16153 event pairs, 705 based on Foata normal form. 4/3246 useless extension candidates. Maximal degree in co-relation 17685. Up to 2917 conditions per place. [2024-06-28 02:49:23,231 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 101 selfloop transitions, 61 changer transitions 0/167 dead transitions. [2024-06-28 02:49:23,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 167 transitions, 1795 flow [2024-06-28 02:49:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 02:49:23,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622093023255814 [2024-06-28 02:49:23,234 INFO L175 Difference]: Start difference. First operand has 99 places, 134 transitions, 1261 flow. Second operand 8 states and 159 transitions. [2024-06-28 02:49:23,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 167 transitions, 1795 flow [2024-06-28 02:49:23,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 167 transitions, 1693 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:23,305 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1331 flow [2024-06-28 02:49:23,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1331, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2024-06-28 02:49:23,309 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2024-06-28 02:49:23,310 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1331 flow [2024-06-28 02:49:23,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:23,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:23,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:23,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:49:23,310 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:23,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:23,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1994836003, now seen corresponding path program 3 times [2024-06-28 02:49:23,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:23,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963013713] [2024-06-28 02:49:23,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:23,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:24,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963013713] [2024-06-28 02:49:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963013713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:24,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:24,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:24,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305920811] [2024-06-28 02:49:24,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:24,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:24,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:24,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:24,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:24,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:24,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 1331 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:24,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:24,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:24,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:24,931 INFO L124 PetriNetUnfolderBase]: 2130/3230 cut-off events. [2024-06-28 02:49:24,931 INFO L125 PetriNetUnfolderBase]: For 61979/61979 co-relation queries the response was YES. [2024-06-28 02:49:24,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17800 conditions, 3230 events. 2130/3230 cut-off events. For 61979/61979 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16027 event pairs, 647 based on Foata normal form. 4/3229 useless extension candidates. Maximal degree in co-relation 17758. Up to 2780 conditions per place. [2024-06-28 02:49:24,946 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 95 selfloop transitions, 69 changer transitions 0/169 dead transitions. [2024-06-28 02:49:24,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 169 transitions, 1831 flow [2024-06-28 02:49:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 02:49:24,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-28 02:49:24,948 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1331 flow. Second operand 8 states and 164 transitions. [2024-06-28 02:49:24,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 169 transitions, 1831 flow [2024-06-28 02:49:24,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 169 transitions, 1697 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:24,986 INFO L231 Difference]: Finished difference. Result has 106 places, 137 transitions, 1343 flow [2024-06-28 02:49:24,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1343, PETRI_PLACES=106, PETRI_TRANSITIONS=137} [2024-06-28 02:49:24,986 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2024-06-28 02:49:24,986 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 137 transitions, 1343 flow [2024-06-28 02:49:24,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:24,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:24,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:24,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:49:24,987 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:24,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:24,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1738658945, now seen corresponding path program 4 times [2024-06-28 02:49:24,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:24,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801113706] [2024-06-28 02:49:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:24,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:25,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:25,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801113706] [2024-06-28 02:49:25,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801113706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:25,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:25,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282950703] [2024-06-28 02:49:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:25,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:25,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:25,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 137 transitions, 1343 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:25,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:25,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:25,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:26,585 INFO L124 PetriNetUnfolderBase]: 2184/3316 cut-off events. [2024-06-28 02:49:26,586 INFO L125 PetriNetUnfolderBase]: For 69430/69435 co-relation queries the response was YES. [2024-06-28 02:49:26,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18581 conditions, 3316 events. 2184/3316 cut-off events. For 69430/69435 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16526 event pairs, 645 based on Foata normal form. 8/3318 useless extension candidates. Maximal degree in co-relation 18538. Up to 2826 conditions per place. [2024-06-28 02:49:26,604 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 99 selfloop transitions, 72 changer transitions 0/176 dead transitions. [2024-06-28 02:49:26,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 176 transitions, 2029 flow [2024-06-28 02:49:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 02:49:26,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-28 02:49:26,606 INFO L175 Difference]: Start difference. First operand has 106 places, 137 transitions, 1343 flow. Second operand 8 states and 164 transitions. [2024-06-28 02:49:26,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 176 transitions, 2029 flow [2024-06-28 02:49:26,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 176 transitions, 1864 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:26,649 INFO L231 Difference]: Finished difference. Result has 107 places, 143 transitions, 1412 flow [2024-06-28 02:49:26,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1412, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2024-06-28 02:49:26,649 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2024-06-28 02:49:26,649 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 1412 flow [2024-06-28 02:49:26,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:26,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:26,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:26,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:49:26,650 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:26,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash 842715303, now seen corresponding path program 5 times [2024-06-28 02:49:26,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:26,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623340927] [2024-06-28 02:49:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:26,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:27,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:27,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623340927] [2024-06-28 02:49:27,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623340927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:27,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:27,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:27,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657940252] [2024-06-28 02:49:27,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:27,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:27,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:27,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:27,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:27,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:27,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 1412 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:27,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:27,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:27,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:28,350 INFO L124 PetriNetUnfolderBase]: 2174/3302 cut-off events. [2024-06-28 02:49:28,350 INFO L125 PetriNetUnfolderBase]: For 73956/73961 co-relation queries the response was YES. [2024-06-28 02:49:28,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18668 conditions, 3302 events. 2174/3302 cut-off events. For 73956/73961 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16473 event pairs, 641 based on Foata normal form. 8/3304 useless extension candidates. Maximal degree in co-relation 18624. Up to 2818 conditions per place. [2024-06-28 02:49:28,370 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 97 selfloop transitions, 73 changer transitions 0/175 dead transitions. [2024-06-28 02:49:28,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 175 transitions, 1938 flow [2024-06-28 02:49:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 02:49:28,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-28 02:49:28,373 INFO L175 Difference]: Start difference. First operand has 107 places, 143 transitions, 1412 flow. Second operand 8 states and 161 transitions. [2024-06-28 02:49:28,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 175 transitions, 1938 flow [2024-06-28 02:49:28,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 175 transitions, 1754 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:28,427 INFO L231 Difference]: Finished difference. Result has 110 places, 143 transitions, 1384 flow [2024-06-28 02:49:28,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1384, PETRI_PLACES=110, PETRI_TRANSITIONS=143} [2024-06-28 02:49:28,427 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2024-06-28 02:49:28,428 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 143 transitions, 1384 flow [2024-06-28 02:49:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:28,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:28,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:28,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:49:28,428 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:28,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 116446645, now seen corresponding path program 4 times [2024-06-28 02:49:28,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:28,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146785468] [2024-06-28 02:49:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:28,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:29,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146785468] [2024-06-28 02:49:29,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146785468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:29,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:29,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:29,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307784785] [2024-06-28 02:49:29,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:29,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:29,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:29,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:29,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:29,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:29,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 143 transitions, 1384 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:29,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:29,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:29,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:29,900 INFO L124 PetriNetUnfolderBase]: 2169/3291 cut-off events. [2024-06-28 02:49:29,900 INFO L125 PetriNetUnfolderBase]: For 78042/78042 co-relation queries the response was YES. [2024-06-28 02:49:29,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18799 conditions, 3291 events. 2169/3291 cut-off events. For 78042/78042 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16411 event pairs, 719 based on Foata normal form. 2/3285 useless extension candidates. Maximal degree in co-relation 18754. Up to 2962 conditions per place. [2024-06-28 02:49:29,921 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 101 selfloop transitions, 61 changer transitions 0/167 dead transitions. [2024-06-28 02:49:29,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 167 transitions, 1788 flow [2024-06-28 02:49:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 02:49:29,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 02:49:29,923 INFO L175 Difference]: Start difference. First operand has 110 places, 143 transitions, 1384 flow. Second operand 8 states and 154 transitions. [2024-06-28 02:49:29,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 167 transitions, 1788 flow [2024-06-28 02:49:29,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 167 transitions, 1594 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:29,981 INFO L231 Difference]: Finished difference. Result has 111 places, 143 transitions, 1322 flow [2024-06-28 02:49:29,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1322, PETRI_PLACES=111, PETRI_TRANSITIONS=143} [2024-06-28 02:49:29,981 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 67 predicate places. [2024-06-28 02:49:29,981 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 143 transitions, 1322 flow [2024-06-28 02:49:29,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:29,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:29,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:29,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:49:29,982 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:29,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash 124727551, now seen corresponding path program 6 times [2024-06-28 02:49:29,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:29,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457410525] [2024-06-28 02:49:29,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:29,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:30,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:30,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457410525] [2024-06-28 02:49:30,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457410525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:30,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:30,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954756730] [2024-06-28 02:49:30,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:30,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:30,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:30,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:30,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 143 transitions, 1322 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:30,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:30,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:30,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:31,417 INFO L124 PetriNetUnfolderBase]: 2159/3279 cut-off events. [2024-06-28 02:49:31,418 INFO L125 PetriNetUnfolderBase]: For 82970/82975 co-relation queries the response was YES. [2024-06-28 02:49:31,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18730 conditions, 3279 events. 2159/3279 cut-off events. For 82970/82975 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16298 event pairs, 648 based on Foata normal form. 8/3281 useless extension candidates. Maximal degree in co-relation 18684. Up to 2803 conditions per place. [2024-06-28 02:49:31,440 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 85 selfloop transitions, 80 changer transitions 0/170 dead transitions. [2024-06-28 02:49:31,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 170 transitions, 1734 flow [2024-06-28 02:49:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 02:49:31,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-28 02:49:31,441 INFO L175 Difference]: Start difference. First operand has 111 places, 143 transitions, 1322 flow. Second operand 8 states and 157 transitions. [2024-06-28 02:49:31,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 170 transitions, 1734 flow [2024-06-28 02:49:31,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 170 transitions, 1534 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:31,497 INFO L231 Difference]: Finished difference. Result has 111 places, 143 transitions, 1290 flow [2024-06-28 02:49:31,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1290, PETRI_PLACES=111, PETRI_TRANSITIONS=143} [2024-06-28 02:49:31,498 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 67 predicate places. [2024-06-28 02:49:31,498 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 143 transitions, 1290 flow [2024-06-28 02:49:31,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:31,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:31,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:31,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:49:31,499 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:31,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash 125035381, now seen corresponding path program 1 times [2024-06-28 02:49:31,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:31,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790422259] [2024-06-28 02:49:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:31,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:32,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:32,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790422259] [2024-06-28 02:49:32,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790422259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:32,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:32,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:49:32,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459737784] [2024-06-28 02:49:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:32,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:49:32,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:49:32,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:49:32,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:49:32,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 143 transitions, 1290 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:32,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:32,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:49:32,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:33,402 INFO L124 PetriNetUnfolderBase]: 1767/2844 cut-off events. [2024-06-28 02:49:33,402 INFO L125 PetriNetUnfolderBase]: For 76001/76026 co-relation queries the response was YES. [2024-06-28 02:49:33,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16182 conditions, 2844 events. 1767/2844 cut-off events. For 76001/76026 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15163 event pairs, 548 based on Foata normal form. 29/2844 useless extension candidates. Maximal degree in co-relation 16135. Up to 2543 conditions per place. [2024-06-28 02:49:33,418 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 140 selfloop transitions, 16 changer transitions 0/172 dead transitions. [2024-06-28 02:49:33,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 172 transitions, 1729 flow [2024-06-28 02:49:33,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 02:49:33,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-06-28 02:49:33,420 INFO L175 Difference]: Start difference. First operand has 111 places, 143 transitions, 1290 flow. Second operand 8 states and 162 transitions. [2024-06-28 02:49:33,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 172 transitions, 1729 flow [2024-06-28 02:49:33,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 172 transitions, 1525 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:33,479 INFO L231 Difference]: Finished difference. Result has 112 places, 148 transitions, 1190 flow [2024-06-28 02:49:33,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1190, PETRI_PLACES=112, PETRI_TRANSITIONS=148} [2024-06-28 02:49:33,479 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2024-06-28 02:49:33,479 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 148 transitions, 1190 flow [2024-06-28 02:49:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:33,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:33,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:33,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:49:33,480 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:33,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash 232426522, now seen corresponding path program 1 times [2024-06-28 02:49:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:33,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465442444] [2024-06-28 02:49:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465442444] [2024-06-28 02:49:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465442444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:34,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:34,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970720183] [2024-06-28 02:49:34,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:34,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 02:49:34,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 148 transitions, 1190 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:34,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:34,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 02:49:34,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:34,987 INFO L124 PetriNetUnfolderBase]: 1496/2571 cut-off events. [2024-06-28 02:49:34,987 INFO L125 PetriNetUnfolderBase]: For 78241/78259 co-relation queries the response was YES. [2024-06-28 02:49:34,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14807 conditions, 2571 events. 1496/2571 cut-off events. For 78241/78259 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 14681 event pairs, 532 based on Foata normal form. 20/2586 useless extension candidates. Maximal degree in co-relation 14758. Up to 2112 conditions per place. [2024-06-28 02:49:35,007 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 96 selfloop transitions, 11 changer transitions 0/161 dead transitions. [2024-06-28 02:49:35,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 161 transitions, 1458 flow [2024-06-28 02:49:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 02:49:35,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2024-06-28 02:49:35,018 INFO L175 Difference]: Start difference. First operand has 112 places, 148 transitions, 1190 flow. Second operand 6 states and 128 transitions. [2024-06-28 02:49:35,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 161 transitions, 1458 flow [2024-06-28 02:49:35,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 161 transitions, 1399 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:35,078 INFO L231 Difference]: Finished difference. Result has 113 places, 151 transitions, 1191 flow [2024-06-28 02:49:35,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1191, PETRI_PLACES=113, PETRI_TRANSITIONS=151} [2024-06-28 02:49:35,083 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 69 predicate places. [2024-06-28 02:49:35,083 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 151 transitions, 1191 flow [2024-06-28 02:49:35,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:35,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:35,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:35,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:49:35,084 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:35,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 907948120, now seen corresponding path program 1 times [2024-06-28 02:49:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:35,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217292374] [2024-06-28 02:49:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:35,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:36,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:36,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217292374] [2024-06-28 02:49:36,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217292374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:36,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:36,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508874200] [2024-06-28 02:49:36,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:36,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:36,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:36,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 151 transitions, 1191 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:36,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:36,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:36,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:36,847 INFO L124 PetriNetUnfolderBase]: 2164/3290 cut-off events. [2024-06-28 02:49:36,847 INFO L125 PetriNetUnfolderBase]: For 99109/99113 co-relation queries the response was YES. [2024-06-28 02:49:36,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19648 conditions, 3290 events. 2164/3290 cut-off events. For 99109/99113 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16358 event pairs, 651 based on Foata normal form. 8/3297 useless extension candidates. Maximal degree in co-relation 19598. Up to 3090 conditions per place. [2024-06-28 02:49:36,870 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 160 selfloop transitions, 27 changer transitions 0/192 dead transitions. [2024-06-28 02:49:36,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 192 transitions, 1735 flow [2024-06-28 02:49:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 02:49:36,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-28 02:49:36,872 INFO L175 Difference]: Start difference. First operand has 113 places, 151 transitions, 1191 flow. Second operand 9 states and 175 transitions. [2024-06-28 02:49:36,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 192 transitions, 1735 flow [2024-06-28 02:49:36,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 192 transitions, 1697 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:36,934 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 1265 flow [2024-06-28 02:49:36,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1265, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2024-06-28 02:49:36,936 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 74 predicate places. [2024-06-28 02:49:36,936 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 1265 flow [2024-06-28 02:49:36,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:36,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:36,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:36,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:49:36,937 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:36,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:36,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1874003080, now seen corresponding path program 2 times [2024-06-28 02:49:36,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:36,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205290013] [2024-06-28 02:49:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:36,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:37,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:37,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205290013] [2024-06-28 02:49:37,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205290013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:37,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:37,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:37,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273015262] [2024-06-28 02:49:37,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:37,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:37,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:37,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:37,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:37,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:37,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 1265 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:37,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:37,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:37,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:38,780 INFO L124 PetriNetUnfolderBase]: 2218/3389 cut-off events. [2024-06-28 02:49:38,781 INFO L125 PetriNetUnfolderBase]: For 108818/108825 co-relation queries the response was YES. [2024-06-28 02:49:38,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20865 conditions, 3389 events. 2218/3389 cut-off events. For 108818/108825 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17119 event pairs, 596 based on Foata normal form. 8/3393 useless extension candidates. Maximal degree in co-relation 20814. Up to 2658 conditions per place. [2024-06-28 02:49:38,804 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 116 selfloop transitions, 86 changer transitions 0/207 dead transitions. [2024-06-28 02:49:38,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 207 transitions, 2179 flow [2024-06-28 02:49:38,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:38,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-28 02:49:38,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935400516795866 [2024-06-28 02:49:38,806 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 1265 flow. Second operand 9 states and 191 transitions. [2024-06-28 02:49:38,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 207 transitions, 2179 flow [2024-06-28 02:49:38,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 207 transitions, 2091 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:38,882 INFO L231 Difference]: Finished difference. Result has 120 places, 163 transitions, 1513 flow [2024-06-28 02:49:38,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1513, PETRI_PLACES=120, PETRI_TRANSITIONS=163} [2024-06-28 02:49:38,883 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2024-06-28 02:49:38,883 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 163 transitions, 1513 flow [2024-06-28 02:49:38,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:38,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:38,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:38,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:49:38,883 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:38,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1740806174, now seen corresponding path program 3 times [2024-06-28 02:49:38,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:38,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741391051] [2024-06-28 02:49:38,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:38,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:39,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:39,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741391051] [2024-06-28 02:49:39,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741391051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:39,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:39,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:39,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437300809] [2024-06-28 02:49:39,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:39,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:39,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:39,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:39,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:39,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 163 transitions, 1513 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:39,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:39,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:39,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:40,687 INFO L124 PetriNetUnfolderBase]: 2208/3375 cut-off events. [2024-06-28 02:49:40,687 INFO L125 PetriNetUnfolderBase]: For 116416/116423 co-relation queries the response was YES. [2024-06-28 02:49:40,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21400 conditions, 3375 events. 2208/3375 cut-off events. For 116416/116423 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17031 event pairs, 596 based on Foata normal form. 8/3379 useless extension candidates. Maximal degree in co-relation 21348. Up to 2650 conditions per place. [2024-06-28 02:49:40,710 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 112 selfloop transitions, 87 changer transitions 0/204 dead transitions. [2024-06-28 02:49:40,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 204 transitions, 2159 flow [2024-06-28 02:49:40,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 02:49:40,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48320413436692505 [2024-06-28 02:49:40,712 INFO L175 Difference]: Start difference. First operand has 120 places, 163 transitions, 1513 flow. Second operand 9 states and 187 transitions. [2024-06-28 02:49:40,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 204 transitions, 2159 flow [2024-06-28 02:49:40,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 204 transitions, 2015 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:40,781 INFO L231 Difference]: Finished difference. Result has 125 places, 163 transitions, 1551 flow [2024-06-28 02:49:40,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1551, PETRI_PLACES=125, PETRI_TRANSITIONS=163} [2024-06-28 02:49:40,782 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 81 predicate places. [2024-06-28 02:49:40,782 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 163 transitions, 1551 flow [2024-06-28 02:49:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:40,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:40,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:49:40,783 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:40,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1596915644, now seen corresponding path program 4 times [2024-06-28 02:49:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157687051] [2024-06-28 02:49:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:41,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:41,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157687051] [2024-06-28 02:49:41,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157687051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:41,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:41,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:41,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722865457] [2024-06-28 02:49:41,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:41,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:41,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:41,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:41,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:41,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 163 transitions, 1551 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:41,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:41,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:41,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:42,610 INFO L124 PetriNetUnfolderBase]: 2294/3524 cut-off events. [2024-06-28 02:49:42,610 INFO L125 PetriNetUnfolderBase]: For 128227/128230 co-relation queries the response was YES. [2024-06-28 02:49:42,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22870 conditions, 3524 events. 2294/3524 cut-off events. For 128227/128230 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17979 event pairs, 610 based on Foata normal form. 4/3524 useless extension candidates. Maximal degree in co-relation 22816. Up to 2723 conditions per place. [2024-06-28 02:49:42,630 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 120 selfloop transitions, 90 changer transitions 0/215 dead transitions. [2024-06-28 02:49:42,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 215 transitions, 2623 flow [2024-06-28 02:49:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:42,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-28 02:49:42,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2024-06-28 02:49:42,632 INFO L175 Difference]: Start difference. First operand has 125 places, 163 transitions, 1551 flow. Second operand 9 states and 192 transitions. [2024-06-28 02:49:42,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 215 transitions, 2623 flow [2024-06-28 02:49:42,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 215 transitions, 2421 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:42,706 INFO L231 Difference]: Finished difference. Result has 126 places, 172 transitions, 1705 flow [2024-06-28 02:49:42,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1705, PETRI_PLACES=126, PETRI_TRANSITIONS=172} [2024-06-28 02:49:42,707 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 82 predicate places. [2024-06-28 02:49:42,707 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 172 transitions, 1705 flow [2024-06-28 02:49:42,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:42,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:42,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:42,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:49:42,707 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:42,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:42,708 INFO L85 PathProgramCache]: Analyzing trace with hash 913454650, now seen corresponding path program 5 times [2024-06-28 02:49:42,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:42,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118778829] [2024-06-28 02:49:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:42,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:43,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:43,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118778829] [2024-06-28 02:49:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118778829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:43,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:43,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:43,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115941638] [2024-06-28 02:49:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:43,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:43,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:43,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:43,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 172 transitions, 1705 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:43,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:43,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:43,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:44,630 INFO L124 PetriNetUnfolderBase]: 2284/3510 cut-off events. [2024-06-28 02:49:44,630 INFO L125 PetriNetUnfolderBase]: For 133980/133983 co-relation queries the response was YES. [2024-06-28 02:49:44,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22866 conditions, 3510 events. 2284/3510 cut-off events. For 133980/133983 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17905 event pairs, 608 based on Foata normal form. 4/3510 useless extension candidates. Maximal degree in co-relation 22811. Up to 2715 conditions per place. [2024-06-28 02:49:44,654 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 117 selfloop transitions, 91 changer transitions 0/213 dead transitions. [2024-06-28 02:49:44,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 213 transitions, 2493 flow [2024-06-28 02:49:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 02:49:44,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:49:44,655 INFO L175 Difference]: Start difference. First operand has 126 places, 172 transitions, 1705 flow. Second operand 9 states and 189 transitions. [2024-06-28 02:49:44,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 213 transitions, 2493 flow [2024-06-28 02:49:44,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 213 transitions, 2307 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:44,769 INFO L231 Difference]: Finished difference. Result has 131 places, 172 transitions, 1709 flow [2024-06-28 02:49:44,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1709, PETRI_PLACES=131, PETRI_TRANSITIONS=172} [2024-06-28 02:49:44,770 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 87 predicate places. [2024-06-28 02:49:44,770 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 172 transitions, 1709 flow [2024-06-28 02:49:44,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:44,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:44,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:44,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:49:44,771 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:44,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:44,771 INFO L85 PathProgramCache]: Analyzing trace with hash 913662040, now seen corresponding path program 6 times [2024-06-28 02:49:44,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:44,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552232638] [2024-06-28 02:49:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:44,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:45,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:45,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552232638] [2024-06-28 02:49:45,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552232638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:45,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:45,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:45,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531128925] [2024-06-28 02:49:45,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:45,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:45,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:45,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:45,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:45,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:45,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 172 transitions, 1709 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:45,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:45,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:45,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:46,672 INFO L124 PetriNetUnfolderBase]: 2274/3496 cut-off events. [2024-06-28 02:49:46,672 INFO L125 PetriNetUnfolderBase]: For 139611/139614 co-relation queries the response was YES. [2024-06-28 02:49:46,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22806 conditions, 3496 events. 2274/3496 cut-off events. For 139611/139614 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17865 event pairs, 613 based on Foata normal form. 4/3496 useless extension candidates. Maximal degree in co-relation 22750. Up to 2707 conditions per place. [2024-06-28 02:49:46,702 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 109 selfloop transitions, 95 changer transitions 0/209 dead transitions. [2024-06-28 02:49:46,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 209 transitions, 2359 flow [2024-06-28 02:49:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:46,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 02:49:46,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 02:49:46,703 INFO L175 Difference]: Start difference. First operand has 131 places, 172 transitions, 1709 flow. Second operand 9 states and 185 transitions. [2024-06-28 02:49:46,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 209 transitions, 2359 flow [2024-06-28 02:49:46,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 209 transitions, 2147 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:46,815 INFO L231 Difference]: Finished difference. Result has 133 places, 172 transitions, 1695 flow [2024-06-28 02:49:46,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1695, PETRI_PLACES=133, PETRI_TRANSITIONS=172} [2024-06-28 02:49:46,816 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 89 predicate places. [2024-06-28 02:49:46,816 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 172 transitions, 1695 flow [2024-06-28 02:49:46,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:46,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:46,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:46,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:49:46,816 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:46,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:46,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1385172137, now seen corresponding path program 1 times [2024-06-28 02:49:46,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:46,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664073646] [2024-06-28 02:49:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:46,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:47,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:47,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664073646] [2024-06-28 02:49:47,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664073646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:47,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:47,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729101283] [2024-06-28 02:49:47,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:47,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:47,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:47,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:49:47,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 172 transitions, 1695 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:47,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:47,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:49:47,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:48,208 INFO L124 PetriNetUnfolderBase]: 1963/3164 cut-off events. [2024-06-28 02:49:48,208 INFO L125 PetriNetUnfolderBase]: For 144148/144152 co-relation queries the response was YES. [2024-06-28 02:49:48,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21323 conditions, 3164 events. 1963/3164 cut-off events. For 144148/144152 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 17241 event pairs, 609 based on Foata normal form. 5/3154 useless extension candidates. Maximal degree in co-relation 21266. Up to 2782 conditions per place. [2024-06-28 02:49:48,232 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 135 selfloop transitions, 13 changer transitions 0/191 dead transitions. [2024-06-28 02:49:48,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 191 transitions, 2071 flow [2024-06-28 02:49:48,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:48,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-28 02:49:48,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-28 02:49:48,233 INFO L175 Difference]: Start difference. First operand has 133 places, 172 transitions, 1695 flow. Second operand 6 states and 123 transitions. [2024-06-28 02:49:48,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 191 transitions, 2071 flow [2024-06-28 02:49:48,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 191 transitions, 1850 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:49:48,328 INFO L231 Difference]: Finished difference. Result has 130 places, 175 transitions, 1539 flow [2024-06-28 02:49:48,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1539, PETRI_PLACES=130, PETRI_TRANSITIONS=175} [2024-06-28 02:49:48,329 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 86 predicate places. [2024-06-28 02:49:48,329 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 175 transitions, 1539 flow [2024-06-28 02:49:48,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:48,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:48,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:48,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:49:48,329 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:48,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash 354573908, now seen corresponding path program 7 times [2024-06-28 02:49:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138304985] [2024-06-28 02:49:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:48,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:49,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138304985] [2024-06-28 02:49:49,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138304985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:49,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:49,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:49,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896119284] [2024-06-28 02:49:49,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:49,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:49,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:49,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:49,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:49,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:49,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 175 transitions, 1539 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:49,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:49,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:49,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:50,063 INFO L124 PetriNetUnfolderBase]: 2333/3600 cut-off events. [2024-06-28 02:49:50,064 INFO L125 PetriNetUnfolderBase]: For 156901/156901 co-relation queries the response was YES. [2024-06-28 02:49:50,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23789 conditions, 3600 events. 2333/3600 cut-off events. For 156901/156901 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 18583 event pairs, 622 based on Foata normal form. 4/3596 useless extension candidates. Maximal degree in co-relation 23731. Up to 2760 conditions per place. [2024-06-28 02:49:50,090 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 118 selfloop transitions, 96 changer transitions 0/219 dead transitions. [2024-06-28 02:49:50,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 219 transitions, 2455 flow [2024-06-28 02:49:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-28 02:49:50,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-28 02:49:50,092 INFO L175 Difference]: Start difference. First operand has 130 places, 175 transitions, 1539 flow. Second operand 9 states and 186 transitions. [2024-06-28 02:49:50,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 219 transitions, 2455 flow [2024-06-28 02:49:50,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 219 transitions, 2414 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:50,215 INFO L231 Difference]: Finished difference. Result has 135 places, 181 transitions, 1804 flow [2024-06-28 02:49:50,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1804, PETRI_PLACES=135, PETRI_TRANSITIONS=181} [2024-06-28 02:49:50,215 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2024-06-28 02:49:50,216 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 181 transitions, 1804 flow [2024-06-28 02:49:50,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:50,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:50,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:50,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:49:50,216 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:50,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:50,217 INFO L85 PathProgramCache]: Analyzing trace with hash 354372098, now seen corresponding path program 8 times [2024-06-28 02:49:50,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:50,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7233539] [2024-06-28 02:49:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:50,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:51,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:51,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7233539] [2024-06-28 02:49:51,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7233539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:51,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:51,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:51,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087665709] [2024-06-28 02:49:51,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:51,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:51,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:51,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:51,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:51,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:51,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 181 transitions, 1804 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:51,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:51,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:51,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:52,072 INFO L124 PetriNetUnfolderBase]: 2355/3637 cut-off events. [2024-06-28 02:49:52,072 INFO L125 PetriNetUnfolderBase]: For 167416/167416 co-relation queries the response was YES. [2024-06-28 02:49:52,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24666 conditions, 3637 events. 2355/3637 cut-off events. For 167416/167416 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18822 event pairs, 615 based on Foata normal form. 4/3633 useless extension candidates. Maximal degree in co-relation 24607. Up to 2779 conditions per place. [2024-06-28 02:49:52,100 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 118 selfloop transitions, 100 changer transitions 0/223 dead transitions. [2024-06-28 02:49:52,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 223 transitions, 2695 flow [2024-06-28 02:49:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 02:49:52,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 02:49:52,102 INFO L175 Difference]: Start difference. First operand has 135 places, 181 transitions, 1804 flow. Second operand 9 states and 185 transitions. [2024-06-28 02:49:52,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 223 transitions, 2695 flow [2024-06-28 02:49:52,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 223 transitions, 2447 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:52,232 INFO L231 Difference]: Finished difference. Result has 138 places, 184 transitions, 1823 flow [2024-06-28 02:49:52,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1823, PETRI_PLACES=138, PETRI_TRANSITIONS=184} [2024-06-28 02:49:52,233 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 94 predicate places. [2024-06-28 02:49:52,234 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 184 transitions, 1823 flow [2024-06-28 02:49:52,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:52,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:52,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:52,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:49:52,235 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:52,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash 354366518, now seen corresponding path program 9 times [2024-06-28 02:49:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:52,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032193675] [2024-06-28 02:49:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:52,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:53,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:53,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032193675] [2024-06-28 02:49:53,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032193675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:53,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:53,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:53,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233724359] [2024-06-28 02:49:53,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:53,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:53,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:53,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:53,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:53,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:53,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 184 transitions, 1823 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:53,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:53,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:53,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:54,106 INFO L124 PetriNetUnfolderBase]: 2345/3623 cut-off events. [2024-06-28 02:49:54,106 INFO L125 PetriNetUnfolderBase]: For 172635/172635 co-relation queries the response was YES. [2024-06-28 02:49:54,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24605 conditions, 3623 events. 2345/3623 cut-off events. For 172635/172635 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18743 event pairs, 613 based on Foata normal form. 4/3619 useless extension candidates. Maximal degree in co-relation 24545. Up to 2771 conditions per place. [2024-06-28 02:49:54,133 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 114 selfloop transitions, 102 changer transitions 0/221 dead transitions. [2024-06-28 02:49:54,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 221 transitions, 2517 flow [2024-06-28 02:49:54,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:54,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 02:49:54,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702842377260982 [2024-06-28 02:49:54,135 INFO L175 Difference]: Start difference. First operand has 138 places, 184 transitions, 1823 flow. Second operand 9 states and 182 transitions. [2024-06-28 02:49:54,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 221 transitions, 2517 flow [2024-06-28 02:49:54,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 221 transitions, 2219 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:54,239 INFO L231 Difference]: Finished difference. Result has 140 places, 184 transitions, 1737 flow [2024-06-28 02:49:54,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1737, PETRI_PLACES=140, PETRI_TRANSITIONS=184} [2024-06-28 02:49:54,239 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 96 predicate places. [2024-06-28 02:49:54,239 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 184 transitions, 1737 flow [2024-06-28 02:49:54,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:54,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:54,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:54,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:49:54,240 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:54,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash 611074418, now seen corresponding path program 10 times [2024-06-28 02:49:54,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:54,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783213337] [2024-06-28 02:49:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:55,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783213337] [2024-06-28 02:49:55,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783213337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:55,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:55,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:55,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56999514] [2024-06-28 02:49:55,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:55,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:55,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:55,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:55,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:55,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:49:55,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 184 transitions, 1737 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:55,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:55,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:49:55,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:56,005 INFO L124 PetriNetUnfolderBase]: 2335/3609 cut-off events. [2024-06-28 02:49:56,005 INFO L125 PetriNetUnfolderBase]: For 177508/177508 co-relation queries the response was YES. [2024-06-28 02:49:56,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24466 conditions, 3609 events. 2335/3609 cut-off events. For 177508/177508 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18645 event pairs, 630 based on Foata normal form. 4/3605 useless extension candidates. Maximal degree in co-relation 24405. Up to 2763 conditions per place. [2024-06-28 02:49:56,034 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 101 selfloop transitions, 110 changer transitions 0/216 dead transitions. [2024-06-28 02:49:56,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 216 transitions, 2263 flow [2024-06-28 02:49:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 02:49:56,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-28 02:49:56,036 INFO L175 Difference]: Start difference. First operand has 140 places, 184 transitions, 1737 flow. Second operand 9 states and 178 transitions. [2024-06-28 02:49:56,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 216 transitions, 2263 flow [2024-06-28 02:49:56,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 216 transitions, 2033 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:56,151 INFO L231 Difference]: Finished difference. Result has 142 places, 184 transitions, 1735 flow [2024-06-28 02:49:56,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1735, PETRI_PLACES=142, PETRI_TRANSITIONS=184} [2024-06-28 02:49:56,152 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 98 predicate places. [2024-06-28 02:49:56,152 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 184 transitions, 1735 flow [2024-06-28 02:49:56,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:49:56,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:56,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:56,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:49:56,152 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:56,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash -27150797, now seen corresponding path program 2 times [2024-06-28 02:49:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:56,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742883384] [2024-06-28 02:49:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:56,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:56,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742883384] [2024-06-28 02:49:56,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742883384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:56,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:56,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:56,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934574986] [2024-06-28 02:49:56,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:56,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:56,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:56,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:49:56,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 184 transitions, 1735 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:56,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:56,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:49:56,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:57,509 INFO L124 PetriNetUnfolderBase]: 1991/3234 cut-off events. [2024-06-28 02:49:57,510 INFO L125 PetriNetUnfolderBase]: For 181883/181896 co-relation queries the response was YES. [2024-06-28 02:49:57,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22808 conditions, 3234 events. 1991/3234 cut-off events. For 181883/181896 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17802 event pairs, 612 based on Foata normal form. 11/3221 useless extension candidates. Maximal degree in co-relation 22746. Up to 2824 conditions per place. [2024-06-28 02:49:57,536 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 137 selfloop transitions, 18 changer transitions 0/198 dead transitions. [2024-06-28 02:49:57,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 198 transitions, 2115 flow [2024-06-28 02:49:57,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:57,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:57,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 02:49:57,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-28 02:49:57,538 INFO L175 Difference]: Start difference. First operand has 142 places, 184 transitions, 1735 flow. Second operand 6 states and 119 transitions. [2024-06-28 02:49:57,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 198 transitions, 2115 flow [2024-06-28 02:49:57,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 198 transitions, 1831 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:49:57,665 INFO L231 Difference]: Finished difference. Result has 138 places, 187 transitions, 1531 flow [2024-06-28 02:49:57,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1531, PETRI_PLACES=138, PETRI_TRANSITIONS=187} [2024-06-28 02:49:57,666 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 94 predicate places. [2024-06-28 02:49:57,666 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 187 transitions, 1531 flow [2024-06-28 02:49:57,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:57,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:57,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:57,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:49:57,666 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:57,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash -189258275, now seen corresponding path program 1 times [2024-06-28 02:49:57,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:57,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529232320] [2024-06-28 02:49:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:57,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:58,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:58,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529232320] [2024-06-28 02:49:58,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529232320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:58,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:58,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:58,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956707669] [2024-06-28 02:49:58,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:58,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:58,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:58,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:58,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:58,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:49:58,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 187 transitions, 1531 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:58,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:58,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:49:58,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:59,002 INFO L124 PetriNetUnfolderBase]: 1972/3209 cut-off events. [2024-06-28 02:49:59,002 INFO L125 PetriNetUnfolderBase]: For 163391/163416 co-relation queries the response was YES. [2024-06-28 02:49:59,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21282 conditions, 3209 events. 1972/3209 cut-off events. For 163391/163416 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 17672 event pairs, 563 based on Foata normal form. 26/3213 useless extension candidates. Maximal degree in co-relation 21219. Up to 2851 conditions per place. [2024-06-28 02:49:59,027 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 173 selfloop transitions, 11 changer transitions 0/202 dead transitions. [2024-06-28 02:49:59,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 202 transitions, 1969 flow [2024-06-28 02:49:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-28 02:49:59,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:49:59,028 INFO L175 Difference]: Start difference. First operand has 138 places, 187 transitions, 1531 flow. Second operand 6 states and 120 transitions. [2024-06-28 02:49:59,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 202 transitions, 1969 flow [2024-06-28 02:49:59,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 202 transitions, 1911 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:59,142 INFO L231 Difference]: Finished difference. Result has 140 places, 190 transitions, 1541 flow [2024-06-28 02:49:59,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1541, PETRI_PLACES=140, PETRI_TRANSITIONS=190} [2024-06-28 02:49:59,143 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 96 predicate places. [2024-06-28 02:49:59,143 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 190 transitions, 1541 flow [2024-06-28 02:49:59,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:59,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:59,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:59,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:49:59,144 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:59,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash -189078785, now seen corresponding path program 2 times [2024-06-28 02:49:59,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:59,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310384870] [2024-06-28 02:49:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:59,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:59,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310384870] [2024-06-28 02:49:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310384870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:59,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257424435] [2024-06-28 02:49:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:59,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:59,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:59,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:49:59,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 190 transitions, 1541 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:59,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:59,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:49:59,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:00,427 INFO L124 PetriNetUnfolderBase]: 1963/3190 cut-off events. [2024-06-28 02:50:00,427 INFO L125 PetriNetUnfolderBase]: For 170139/170176 co-relation queries the response was YES. [2024-06-28 02:50:00,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21604 conditions, 3190 events. 1963/3190 cut-off events. For 170139/170176 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17562 event pairs, 881 based on Foata normal form. 37/3209 useless extension candidates. Maximal degree in co-relation 21540. Up to 2841 conditions per place. [2024-06-28 02:50:00,455 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 167 selfloop transitions, 18 changer transitions 0/203 dead transitions. [2024-06-28 02:50:00,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 203 transitions, 1987 flow [2024-06-28 02:50:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:50:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:50:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 02:50:00,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2024-06-28 02:50:00,457 INFO L175 Difference]: Start difference. First operand has 140 places, 190 transitions, 1541 flow. Second operand 7 states and 132 transitions. [2024-06-28 02:50:00,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 203 transitions, 1987 flow [2024-06-28 02:50:00,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 203 transitions, 1939 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:00,587 INFO L231 Difference]: Finished difference. Result has 144 places, 195 transitions, 1600 flow [2024-06-28 02:50:00,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1600, PETRI_PLACES=144, PETRI_TRANSITIONS=195} [2024-06-28 02:50:00,588 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 100 predicate places. [2024-06-28 02:50:00,588 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 195 transitions, 1600 flow [2024-06-28 02:50:00,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:00,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:00,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:00,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:50:00,588 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:00,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:00,589 INFO L85 PathProgramCache]: Analyzing trace with hash -235530566, now seen corresponding path program 1 times [2024-06-28 02:50:00,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:00,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186924484] [2024-06-28 02:50:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:00,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:01,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:01,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186924484] [2024-06-28 02:50:01,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186924484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:01,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:01,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:01,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121118278] [2024-06-28 02:50:01,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:01,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:01,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:01,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:01,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 195 transitions, 1600 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:01,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:01,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:01,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:02,171 INFO L124 PetriNetUnfolderBase]: 2436/3774 cut-off events. [2024-06-28 02:50:02,171 INFO L125 PetriNetUnfolderBase]: For 213825/213831 co-relation queries the response was YES. [2024-06-28 02:50:02,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26651 conditions, 3774 events. 2436/3774 cut-off events. For 213825/213831 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 19840 event pairs, 902 based on Foata normal form. 10/3783 useless extension candidates. Maximal degree in co-relation 26585. Up to 3430 conditions per place. [2024-06-28 02:50:02,202 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 215 selfloop transitions, 43 changer transitions 0/263 dead transitions. [2024-06-28 02:50:02,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 263 transitions, 2624 flow [2024-06-28 02:50:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:02,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 02:50:02,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503171247357294 [2024-06-28 02:50:02,203 INFO L175 Difference]: Start difference. First operand has 144 places, 195 transitions, 1600 flow. Second operand 11 states and 213 transitions. [2024-06-28 02:50:02,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 263 transitions, 2624 flow [2024-06-28 02:50:02,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 263 transitions, 2565 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 02:50:02,365 INFO L231 Difference]: Finished difference. Result has 156 places, 218 transitions, 1914 flow [2024-06-28 02:50:02,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1914, PETRI_PLACES=156, PETRI_TRANSITIONS=218} [2024-06-28 02:50:02,365 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 112 predicate places. [2024-06-28 02:50:02,366 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 218 transitions, 1914 flow [2024-06-28 02:50:02,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:02,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:02,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:02,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:50:02,366 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:02,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:02,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1415308230, now seen corresponding path program 2 times [2024-06-28 02:50:02,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:02,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152756876] [2024-06-28 02:50:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:02,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:03,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:03,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152756876] [2024-06-28 02:50:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152756876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:03,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:03,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:03,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901571340] [2024-06-28 02:50:03,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:03,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:03,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:03,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:03,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 218 transitions, 1914 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:03,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:03,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:03,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:04,089 INFO L124 PetriNetUnfolderBase]: 2559/3976 cut-off events. [2024-06-28 02:50:04,090 INFO L125 PetriNetUnfolderBase]: For 237873/237879 co-relation queries the response was YES. [2024-06-28 02:50:04,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28937 conditions, 3976 events. 2559/3976 cut-off events. For 237873/237879 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21221 event pairs, 866 based on Foata normal form. 10/3985 useless extension candidates. Maximal degree in co-relation 28865. Up to 3559 conditions per place. [2024-06-28 02:50:04,125 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 223 selfloop transitions, 63 changer transitions 0/291 dead transitions. [2024-06-28 02:50:04,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 291 transitions, 3145 flow [2024-06-28 02:50:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:50:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:50:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-06-28 02:50:04,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44573643410852715 [2024-06-28 02:50:04,129 INFO L175 Difference]: Start difference. First operand has 156 places, 218 transitions, 1914 flow. Second operand 12 states and 230 transitions. [2024-06-28 02:50:04,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 291 transitions, 3145 flow [2024-06-28 02:50:04,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 291 transitions, 3005 flow, removed 63 selfloop flow, removed 3 redundant places. [2024-06-28 02:50:04,330 INFO L231 Difference]: Finished difference. Result has 168 places, 242 transitions, 2311 flow [2024-06-28 02:50:04,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2311, PETRI_PLACES=168, PETRI_TRANSITIONS=242} [2024-06-28 02:50:04,331 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 124 predicate places. [2024-06-28 02:50:04,331 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 242 transitions, 2311 flow [2024-06-28 02:50:04,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:04,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:04,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:04,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:50:04,332 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:04,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash -656795330, now seen corresponding path program 3 times [2024-06-28 02:50:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140043899] [2024-06-28 02:50:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:05,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:05,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140043899] [2024-06-28 02:50:05,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140043899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:05,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:05,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:05,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224577633] [2024-06-28 02:50:05,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:05,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:05,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:05,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:05,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 242 transitions, 2311 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:05,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:05,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:05,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:06,090 INFO L124 PetriNetUnfolderBase]: 2592/4032 cut-off events. [2024-06-28 02:50:06,091 INFO L125 PetriNetUnfolderBase]: For 246575/246579 co-relation queries the response was YES. [2024-06-28 02:50:06,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29969 conditions, 4032 events. 2592/4032 cut-off events. For 246575/246579 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21678 event pairs, 910 based on Foata normal form. 10/4041 useless extension candidates. Maximal degree in co-relation 29892. Up to 3681 conditions per place. [2024-06-28 02:50:06,130 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 229 selfloop transitions, 61 changer transitions 0/295 dead transitions. [2024-06-28 02:50:06,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 295 transitions, 3227 flow [2024-06-28 02:50:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:50:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:50:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-28 02:50:06,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-28 02:50:06,132 INFO L175 Difference]: Start difference. First operand has 168 places, 242 transitions, 2311 flow. Second operand 12 states and 224 transitions. [2024-06-28 02:50:06,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 295 transitions, 3227 flow [2024-06-28 02:50:06,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 295 transitions, 3071 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:06,382 INFO L231 Difference]: Finished difference. Result has 174 places, 252 transitions, 2463 flow [2024-06-28 02:50:06,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2463, PETRI_PLACES=174, PETRI_TRANSITIONS=252} [2024-06-28 02:50:06,383 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 130 predicate places. [2024-06-28 02:50:06,383 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 252 transitions, 2463 flow [2024-06-28 02:50:06,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:06,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:06,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:06,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:50:06,383 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:06,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:06,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1281126198, now seen corresponding path program 4 times [2024-06-28 02:50:06,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:06,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527884832] [2024-06-28 02:50:06,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:06,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:07,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:07,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527884832] [2024-06-28 02:50:07,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527884832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:07,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:07,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:07,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100921895] [2024-06-28 02:50:07,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:07,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:07,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:07,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:07,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 252 transitions, 2463 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:07,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:07,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:07,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:08,041 INFO L124 PetriNetUnfolderBase]: 2761/4297 cut-off events. [2024-06-28 02:50:08,042 INFO L125 PetriNetUnfolderBase]: For 269352/269356 co-relation queries the response was YES. [2024-06-28 02:50:08,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32173 conditions, 4297 events. 2761/4297 cut-off events. For 269352/269356 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 23459 event pairs, 720 based on Foata normal form. 8/4304 useless extension candidates. Maximal degree in co-relation 32094. Up to 3597 conditions per place. [2024-06-28 02:50:08,083 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 220 selfloop transitions, 99 changer transitions 0/324 dead transitions. [2024-06-28 02:50:08,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 324 transitions, 3909 flow [2024-06-28 02:50:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 02:50:08,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2024-06-28 02:50:08,093 INFO L175 Difference]: Start difference. First operand has 174 places, 252 transitions, 2463 flow. Second operand 11 states and 214 transitions. [2024-06-28 02:50:08,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 324 transitions, 3909 flow [2024-06-28 02:50:08,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 324 transitions, 3713 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:08,414 INFO L231 Difference]: Finished difference. Result has 178 places, 277 transitions, 2916 flow [2024-06-28 02:50:08,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2916, PETRI_PLACES=178, PETRI_TRANSITIONS=277} [2024-06-28 02:50:08,414 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 134 predicate places. [2024-06-28 02:50:08,414 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 277 transitions, 2916 flow [2024-06-28 02:50:08,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:08,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:08,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:08,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:50:08,415 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:08,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:08,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1403439896, now seen corresponding path program 5 times [2024-06-28 02:50:08,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:08,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596952949] [2024-06-28 02:50:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:08,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:09,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596952949] [2024-06-28 02:50:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596952949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:09,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155332651] [2024-06-28 02:50:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:09,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:09,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:09,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:09,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:09,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:09,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 277 transitions, 2916 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:09,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:09,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:09,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:10,104 INFO L124 PetriNetUnfolderBase]: 2743/4279 cut-off events. [2024-06-28 02:50:10,104 INFO L125 PetriNetUnfolderBase]: For 279996/280000 co-relation queries the response was YES. [2024-06-28 02:50:10,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32503 conditions, 4279 events. 2743/4279 cut-off events. For 279996/280000 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23405 event pairs, 953 based on Foata normal form. 12/4290 useless extension candidates. Maximal degree in co-relation 32421. Up to 3921 conditions per place. [2024-06-28 02:50:10,142 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 253 selfloop transitions, 55 changer transitions 0/313 dead transitions. [2024-06-28 02:50:10,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 313 transitions, 3679 flow [2024-06-28 02:50:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 02:50:10,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-28 02:50:10,152 INFO L175 Difference]: Start difference. First operand has 178 places, 277 transitions, 2916 flow. Second operand 10 states and 192 transitions. [2024-06-28 02:50:10,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 313 transitions, 3679 flow [2024-06-28 02:50:10,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 313 transitions, 3428 flow, removed 91 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:10,402 INFO L231 Difference]: Finished difference. Result has 181 places, 277 transitions, 2798 flow [2024-06-28 02:50:10,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2798, PETRI_PLACES=181, PETRI_TRANSITIONS=277} [2024-06-28 02:50:10,402 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 137 predicate places. [2024-06-28 02:50:10,403 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 277 transitions, 2798 flow [2024-06-28 02:50:10,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:10,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:10,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:10,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:50:10,403 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:10,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash -193490042, now seen corresponding path program 6 times [2024-06-28 02:50:10,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:10,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394638017] [2024-06-28 02:50:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:10,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:11,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394638017] [2024-06-28 02:50:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394638017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:11,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955762903] [2024-06-28 02:50:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:11,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:11,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:11,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:11,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:11,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 277 transitions, 2798 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:11,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:11,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:11,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:12,319 INFO L124 PetriNetUnfolderBase]: 2820/4394 cut-off events. [2024-06-28 02:50:12,319 INFO L125 PetriNetUnfolderBase]: For 278425/278430 co-relation queries the response was YES. [2024-06-28 02:50:12,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32747 conditions, 4394 events. 2820/4394 cut-off events. For 278425/278430 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24148 event pairs, 873 based on Foata normal form. 8/4400 useless extension candidates. Maximal degree in co-relation 32664. Up to 3856 conditions per place. [2024-06-28 02:50:12,351 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 218 selfloop transitions, 118 changer transitions 0/341 dead transitions. [2024-06-28 02:50:12,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 341 transitions, 3889 flow [2024-06-28 02:50:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 02:50:12,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 02:50:12,353 INFO L175 Difference]: Start difference. First operand has 181 places, 277 transitions, 2798 flow. Second operand 10 states and 196 transitions. [2024-06-28 02:50:12,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 341 transitions, 3889 flow [2024-06-28 02:50:12,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 341 transitions, 3784 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:12,647 INFO L231 Difference]: Finished difference. Result has 185 places, 304 transitions, 3263 flow [2024-06-28 02:50:12,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3263, PETRI_PLACES=185, PETRI_TRANSITIONS=304} [2024-06-28 02:50:12,647 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 141 predicate places. [2024-06-28 02:50:12,647 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 304 transitions, 3263 flow [2024-06-28 02:50:12,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:12,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:12,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:12,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:50:12,648 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:12,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:12,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1118386383, now seen corresponding path program 1 times [2024-06-28 02:50:12,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:12,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199798993] [2024-06-28 02:50:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:12,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:13,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:13,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199798993] [2024-06-28 02:50:13,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199798993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:13,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:13,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:13,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168113185] [2024-06-28 02:50:13,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:13,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:13,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:13,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:13,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:13,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:50:13,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 304 transitions, 3263 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:13,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:13,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:50:13,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:14,220 INFO L124 PetriNetUnfolderBase]: 2450/3989 cut-off events. [2024-06-28 02:50:14,220 INFO L125 PetriNetUnfolderBase]: For 297575/297605 co-relation queries the response was YES. [2024-06-28 02:50:14,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30823 conditions, 3989 events. 2450/3989 cut-off events. For 297575/297605 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 23484 event pairs, 910 based on Foata normal form. 14/3964 useless extension candidates. Maximal degree in co-relation 30737. Up to 3388 conditions per place. [2024-06-28 02:50:14,257 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 213 selfloop transitions, 39 changer transitions 0/331 dead transitions. [2024-06-28 02:50:14,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 331 transitions, 3917 flow [2024-06-28 02:50:14,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 02:50:14,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-06-28 02:50:14,259 INFO L175 Difference]: Start difference. First operand has 185 places, 304 transitions, 3263 flow. Second operand 8 states and 165 transitions. [2024-06-28 02:50:14,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 331 transitions, 3917 flow [2024-06-28 02:50:14,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 331 transitions, 3735 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:14,574 INFO L231 Difference]: Finished difference. Result has 189 places, 307 transitions, 3217 flow [2024-06-28 02:50:14,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3217, PETRI_PLACES=189, PETRI_TRANSITIONS=307} [2024-06-28 02:50:14,575 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 145 predicate places. [2024-06-28 02:50:14,575 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 307 transitions, 3217 flow [2024-06-28 02:50:14,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:14,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:14,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:14,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:50:14,576 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:14,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1632851684, now seen corresponding path program 7 times [2024-06-28 02:50:14,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:14,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830089496] [2024-06-28 02:50:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:14,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:15,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:15,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830089496] [2024-06-28 02:50:15,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830089496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:15,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:15,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:15,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375453993] [2024-06-28 02:50:15,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:15,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:15,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:15,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:15,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:15,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:15,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 307 transitions, 3217 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:15,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:15,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:15,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:16,556 INFO L124 PetriNetUnfolderBase]: 3079/4806 cut-off events. [2024-06-28 02:50:16,556 INFO L125 PetriNetUnfolderBase]: For 315913/315915 co-relation queries the response was YES. [2024-06-28 02:50:16,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36891 conditions, 4806 events. 3079/4806 cut-off events. For 315913/315915 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 26953 event pairs, 717 based on Foata normal form. 8/4813 useless extension candidates. Maximal degree in co-relation 36804. Up to 4275 conditions per place. [2024-06-28 02:50:16,603 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 307 selfloop transitions, 88 changer transitions 0/400 dead transitions. [2024-06-28 02:50:16,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 400 transitions, 5089 flow [2024-06-28 02:50:16,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 02:50:16,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503171247357294 [2024-06-28 02:50:16,604 INFO L175 Difference]: Start difference. First operand has 189 places, 307 transitions, 3217 flow. Second operand 11 states and 213 transitions. [2024-06-28 02:50:16,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 400 transitions, 5089 flow [2024-06-28 02:50:17,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 400 transitions, 4963 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:17,046 INFO L231 Difference]: Finished difference. Result has 197 places, 359 transitions, 4172 flow [2024-06-28 02:50:17,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4172, PETRI_PLACES=197, PETRI_TRANSITIONS=359} [2024-06-28 02:50:17,047 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 153 predicate places. [2024-06-28 02:50:17,047 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 359 transitions, 4172 flow [2024-06-28 02:50:17,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:17,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:17,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:17,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:50:17,048 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:17,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1745936518, now seen corresponding path program 8 times [2024-06-28 02:50:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:17,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496116151] [2024-06-28 02:50:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:17,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496116151] [2024-06-28 02:50:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496116151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:17,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:17,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:17,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175217633] [2024-06-28 02:50:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:17,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:17,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:17,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:17,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:18,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:18,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 359 transitions, 4172 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:18,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:18,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:18,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:19,000 INFO L124 PetriNetUnfolderBase]: 3061/4784 cut-off events. [2024-06-28 02:50:19,000 INFO L125 PetriNetUnfolderBase]: For 323895/323897 co-relation queries the response was YES. [2024-06-28 02:50:19,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37152 conditions, 4784 events. 3061/4784 cut-off events. For 323895/323897 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 26844 event pairs, 746 based on Foata normal form. 10/4793 useless extension candidates. Maximal degree in co-relation 37061. Up to 4379 conditions per place. [2024-06-28 02:50:19,048 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 317 selfloop transitions, 70 changer transitions 0/392 dead transitions. [2024-06-28 02:50:19,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 392 transitions, 5070 flow [2024-06-28 02:50:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 02:50:19,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-28 02:50:19,049 INFO L175 Difference]: Start difference. First operand has 197 places, 359 transitions, 4172 flow. Second operand 10 states and 192 transitions. [2024-06-28 02:50:19,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 392 transitions, 5070 flow [2024-06-28 02:50:19,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 392 transitions, 4918 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 02:50:19,523 INFO L231 Difference]: Finished difference. Result has 204 places, 359 transitions, 4178 flow [2024-06-28 02:50:19,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4020, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4178, PETRI_PLACES=204, PETRI_TRANSITIONS=359} [2024-06-28 02:50:19,524 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 160 predicate places. [2024-06-28 02:50:19,524 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 359 transitions, 4178 flow [2024-06-28 02:50:19,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:19,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:19,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:19,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:50:19,525 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:19,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1750999814, now seen corresponding path program 9 times [2024-06-28 02:50:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310161466] [2024-06-28 02:50:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310161466] [2024-06-28 02:50:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310161466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:20,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:20,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:20,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500408863] [2024-06-28 02:50:20,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:20,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:20,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:20,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:20,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:20,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:20,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 359 transitions, 4178 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:20,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:20,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:20,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:21,598 INFO L124 PetriNetUnfolderBase]: 3139/4920 cut-off events. [2024-06-28 02:50:21,598 INFO L125 PetriNetUnfolderBase]: For 331582/331587 co-relation queries the response was YES. [2024-06-28 02:50:21,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37989 conditions, 4920 events. 3139/4920 cut-off events. For 331582/331587 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 27963 event pairs, 758 based on Foata normal form. 8/4926 useless extension candidates. Maximal degree in co-relation 37897. Up to 4282 conditions per place. [2024-06-28 02:50:21,652 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 256 selfloop transitions, 155 changer transitions 0/416 dead transitions. [2024-06-28 02:50:21,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 416 transitions, 5374 flow [2024-06-28 02:50:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:21,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 02:50:21,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-28 02:50:21,668 INFO L175 Difference]: Start difference. First operand has 204 places, 359 transitions, 4178 flow. Second operand 10 states and 197 transitions. [2024-06-28 02:50:21,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 416 transitions, 5374 flow [2024-06-28 02:50:22,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 416 transitions, 5242 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:22,118 INFO L231 Difference]: Finished difference. Result has 207 places, 383 transitions, 4646 flow [2024-06-28 02:50:22,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4046, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4646, PETRI_PLACES=207, PETRI_TRANSITIONS=383} [2024-06-28 02:50:22,119 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 163 predicate places. [2024-06-28 02:50:22,119 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 383 transitions, 4646 flow [2024-06-28 02:50:22,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:22,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:22,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:22,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:50:22,120 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:22,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:22,120 INFO L85 PathProgramCache]: Analyzing trace with hash 61526662, now seen corresponding path program 10 times [2024-06-28 02:50:22,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:22,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653677799] [2024-06-28 02:50:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:22,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:23,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:23,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653677799] [2024-06-28 02:50:23,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653677799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:23,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:23,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:23,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816159896] [2024-06-28 02:50:23,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:23,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:23,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:23,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:23,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:23,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:23,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 383 transitions, 4646 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:23,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:23,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:23,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:24,218 INFO L124 PetriNetUnfolderBase]: 3177/4980 cut-off events. [2024-06-28 02:50:24,218 INFO L125 PetriNetUnfolderBase]: For 346787/346790 co-relation queries the response was YES. [2024-06-28 02:50:24,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39272 conditions, 4980 events. 3177/4980 cut-off events. For 346787/346790 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 28378 event pairs, 747 based on Foata normal form. 6/4984 useless extension candidates. Maximal degree in co-relation 39178. Up to 4337 conditions per place. [2024-06-28 02:50:24,265 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 260 selfloop transitions, 162 changer transitions 0/427 dead transitions. [2024-06-28 02:50:24,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 427 transitions, 5818 flow [2024-06-28 02:50:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 02:50:24,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-28 02:50:24,266 INFO L175 Difference]: Start difference. First operand has 207 places, 383 transitions, 4646 flow. Second operand 10 states and 195 transitions. [2024-06-28 02:50:24,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 427 transitions, 5818 flow [2024-06-28 02:50:24,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 427 transitions, 5562 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:24,644 INFO L231 Difference]: Finished difference. Result has 214 places, 394 transitions, 4961 flow [2024-06-28 02:50:24,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4961, PETRI_PLACES=214, PETRI_TRANSITIONS=394} [2024-06-28 02:50:24,645 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 170 predicate places. [2024-06-28 02:50:24,645 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 394 transitions, 4961 flow [2024-06-28 02:50:24,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:24,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:24,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:24,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:50:24,646 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:24,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:24,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1946661678, now seen corresponding path program 1 times [2024-06-28 02:50:24,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:24,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906475028] [2024-06-28 02:50:24,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:24,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:25,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:25,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906475028] [2024-06-28 02:50:25,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906475028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:25,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:25,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:25,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251810389] [2024-06-28 02:50:25,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:25,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:25,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:25,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:25,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:25,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 394 transitions, 4961 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:25,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:25,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:25,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:27,071 INFO L124 PetriNetUnfolderBase]: 3258/5121 cut-off events. [2024-06-28 02:50:27,071 INFO L125 PetriNetUnfolderBase]: For 367587/367592 co-relation queries the response was YES. [2024-06-28 02:50:27,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40372 conditions, 5121 events. 3258/5121 cut-off events. For 367587/367592 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 29436 event pairs, 1045 based on Foata normal form. 6/5123 useless extension candidates. Maximal degree in co-relation 40276. Up to 4651 conditions per place. [2024-06-28 02:50:27,122 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 384 selfloop transitions, 58 changer transitions 0/447 dead transitions. [2024-06-28 02:50:27,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 447 transitions, 6179 flow [2024-06-28 02:50:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 02:50:27,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-28 02:50:27,124 INFO L175 Difference]: Start difference. First operand has 214 places, 394 transitions, 4961 flow. Second operand 10 states and 195 transitions. [2024-06-28 02:50:27,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 447 transitions, 6179 flow [2024-06-28 02:50:27,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 447 transitions, 5941 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:27,598 INFO L231 Difference]: Finished difference. Result has 222 places, 412 transitions, 5050 flow [2024-06-28 02:50:27,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5050, PETRI_PLACES=222, PETRI_TRANSITIONS=412} [2024-06-28 02:50:27,599 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 178 predicate places. [2024-06-28 02:50:27,599 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 412 transitions, 5050 flow [2024-06-28 02:50:27,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:27,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:27,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:27,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:50:27,600 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:27,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2074490463, now seen corresponding path program 2 times [2024-06-28 02:50:27,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:27,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061059157] [2024-06-28 02:50:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:27,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:28,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:28,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061059157] [2024-06-28 02:50:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061059157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:28,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:28,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514245308] [2024-06-28 02:50:28,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:28,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:28,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:28,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:28,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:28,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:50:28,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 412 transitions, 5050 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:28,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:28,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:50:28,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:29,297 INFO L124 PetriNetUnfolderBase]: 2797/4609 cut-off events. [2024-06-28 02:50:29,297 INFO L125 PetriNetUnfolderBase]: For 367719/367736 co-relation queries the response was YES. [2024-06-28 02:50:29,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37276 conditions, 4609 events. 2797/4609 cut-off events. For 367719/367736 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 28169 event pairs, 705 based on Foata normal form. 7/4587 useless extension candidates. Maximal degree in co-relation 37177. Up to 3820 conditions per place. [2024-06-28 02:50:29,351 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 281 selfloop transitions, 52 changer transitions 0/439 dead transitions. [2024-06-28 02:50:29,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 439 transitions, 5862 flow [2024-06-28 02:50:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:29,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 02:50:29,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-06-28 02:50:29,352 INFO L175 Difference]: Start difference. First operand has 222 places, 412 transitions, 5050 flow. Second operand 8 states and 165 transitions. [2024-06-28 02:50:29,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 439 transitions, 5862 flow [2024-06-28 02:50:29,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 439 transitions, 5582 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:29,940 INFO L231 Difference]: Finished difference. Result has 224 places, 418 transitions, 4959 flow [2024-06-28 02:50:29,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4770, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4959, PETRI_PLACES=224, PETRI_TRANSITIONS=418} [2024-06-28 02:50:29,941 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 180 predicate places. [2024-06-28 02:50:29,941 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 418 transitions, 4959 flow [2024-06-28 02:50:29,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:29,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:29,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:29,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:50:29,942 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:29,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2030710217, now seen corresponding path program 1 times [2024-06-28 02:50:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:29,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124378468] [2024-06-28 02:50:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:30,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:30,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124378468] [2024-06-28 02:50:30,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124378468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:30,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:30,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:30,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486807752] [2024-06-28 02:50:30,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:30,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:30,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:30,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:30,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:30,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:50:30,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 418 transitions, 4959 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:30,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:30,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:50:30,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:31,722 INFO L124 PetriNetUnfolderBase]: 2822/4631 cut-off events. [2024-06-28 02:50:31,723 INFO L125 PetriNetUnfolderBase]: For 390536/390575 co-relation queries the response was YES. [2024-06-28 02:50:31,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37467 conditions, 4631 events. 2822/4631 cut-off events. For 390536/390575 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 28343 event pairs, 994 based on Foata normal form. 10/4600 useless extension candidates. Maximal degree in co-relation 37369. Up to 3936 conditions per place. [2024-06-28 02:50:31,772 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 316 selfloop transitions, 20 changer transitions 0/442 dead transitions. [2024-06-28 02:50:31,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 442 transitions, 5757 flow [2024-06-28 02:50:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:31,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 02:50:31,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622093023255814 [2024-06-28 02:50:31,774 INFO L175 Difference]: Start difference. First operand has 224 places, 418 transitions, 4959 flow. Second operand 8 states and 159 transitions. [2024-06-28 02:50:31,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 442 transitions, 5757 flow [2024-06-28 02:50:32,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 442 transitions, 5628 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:32,264 INFO L231 Difference]: Finished difference. Result has 227 places, 424 transitions, 4942 flow [2024-06-28 02:50:32,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4830, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4942, PETRI_PLACES=227, PETRI_TRANSITIONS=424} [2024-06-28 02:50:32,265 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 183 predicate places. [2024-06-28 02:50:32,265 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 424 transitions, 4942 flow [2024-06-28 02:50:32,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:32,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:32,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:32,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:50:32,266 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:32,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:32,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2030709783, now seen corresponding path program 3 times [2024-06-28 02:50:32,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:32,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074344534] [2024-06-28 02:50:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:32,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:33,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:33,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074344534] [2024-06-28 02:50:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074344534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:33,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:33,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:33,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049262984] [2024-06-28 02:50:33,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:33,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:33,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:33,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:33,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:33,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:50:33,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 424 transitions, 4942 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:33,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:33,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:50:33,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:34,064 INFO L124 PetriNetUnfolderBase]: 2829/4640 cut-off events. [2024-06-28 02:50:34,064 INFO L125 PetriNetUnfolderBase]: For 390418/390425 co-relation queries the response was YES. [2024-06-28 02:50:34,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38119 conditions, 4640 events. 2829/4640 cut-off events. For 390418/390425 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28188 event pairs, 684 based on Foata normal form. 3/4613 useless extension candidates. Maximal degree in co-relation 38019. Up to 3833 conditions per place. [2024-06-28 02:50:34,123 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 279 selfloop transitions, 60 changer transitions 0/445 dead transitions. [2024-06-28 02:50:34,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 445 transitions, 5752 flow [2024-06-28 02:50:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 02:50:34,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-06-28 02:50:34,124 INFO L175 Difference]: Start difference. First operand has 227 places, 424 transitions, 4942 flow. Second operand 8 states and 162 transitions. [2024-06-28 02:50:34,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 445 transitions, 5752 flow [2024-06-28 02:50:34,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 445 transitions, 5692 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:34,603 INFO L231 Difference]: Finished difference. Result has 231 places, 427 transitions, 5070 flow [2024-06-28 02:50:34,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5070, PETRI_PLACES=231, PETRI_TRANSITIONS=427} [2024-06-28 02:50:34,604 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 187 predicate places. [2024-06-28 02:50:34,604 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 427 transitions, 5070 flow [2024-06-28 02:50:34,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:34,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:34,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:34,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:50:34,605 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:34,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1772158572, now seen corresponding path program 11 times [2024-06-28 02:50:34,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:34,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50723521] [2024-06-28 02:50:34,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:34,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:35,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:35,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50723521] [2024-06-28 02:50:35,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50723521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:35,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:35,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:35,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397494255] [2024-06-28 02:50:35,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:35,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:35,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:35,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:35,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 427 transitions, 5070 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:35,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:35,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:35,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:36,789 INFO L124 PetriNetUnfolderBase]: 3326/5211 cut-off events. [2024-06-28 02:50:36,790 INFO L125 PetriNetUnfolderBase]: For 422805/422809 co-relation queries the response was YES. [2024-06-28 02:50:36,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42680 conditions, 5211 events. 3326/5211 cut-off events. For 422805/422809 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 29898 event pairs, 718 based on Foata normal form. 10/5220 useless extension candidates. Maximal degree in co-relation 42579. Up to 4234 conditions per place. [2024-06-28 02:50:36,845 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 312 selfloop transitions, 155 changer transitions 0/472 dead transitions. [2024-06-28 02:50:36,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 472 transitions, 6510 flow [2024-06-28 02:50:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 02:50:36,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-28 02:50:36,847 INFO L175 Difference]: Start difference. First operand has 231 places, 427 transitions, 5070 flow. Second operand 10 states and 194 transitions. [2024-06-28 02:50:36,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 472 transitions, 6510 flow [2024-06-28 02:50:37,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 472 transitions, 6344 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:37,484 INFO L231 Difference]: Finished difference. Result has 235 places, 431 transitions, 5355 flow [2024-06-28 02:50:37,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4904, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5355, PETRI_PLACES=235, PETRI_TRANSITIONS=431} [2024-06-28 02:50:37,484 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 191 predicate places. [2024-06-28 02:50:37,485 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 431 transitions, 5355 flow [2024-06-28 02:50:37,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:37,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:37,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:37,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:50:37,485 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:37,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1769301612, now seen corresponding path program 12 times [2024-06-28 02:50:37,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:37,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523402277] [2024-06-28 02:50:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:38,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:38,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523402277] [2024-06-28 02:50:38,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523402277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:38,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:38,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824827340] [2024-06-28 02:50:38,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:38,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:38,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:38,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:38,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 431 transitions, 5355 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:38,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:38,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:38,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:39,612 INFO L124 PetriNetUnfolderBase]: 3308/5197 cut-off events. [2024-06-28 02:50:39,612 INFO L125 PetriNetUnfolderBase]: For 430069/430073 co-relation queries the response was YES. [2024-06-28 02:50:39,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42914 conditions, 5197 events. 3308/5197 cut-off events. For 430069/430073 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29943 event pairs, 967 based on Foata normal form. 12/5208 useless extension candidates. Maximal degree in co-relation 42812. Up to 4604 conditions per place. [2024-06-28 02:50:39,667 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 356 selfloop transitions, 103 changer transitions 0/464 dead transitions. [2024-06-28 02:50:39,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 464 transitions, 6433 flow [2024-06-28 02:50:39,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:39,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 02:50:39,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 02:50:39,668 INFO L175 Difference]: Start difference. First operand has 235 places, 431 transitions, 5355 flow. Second operand 9 states and 174 transitions. [2024-06-28 02:50:39,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 464 transitions, 6433 flow [2024-06-28 02:50:40,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 464 transitions, 6065 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:40,297 INFO L231 Difference]: Finished difference. Result has 235 places, 431 transitions, 5235 flow [2024-06-28 02:50:40,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4987, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5235, PETRI_PLACES=235, PETRI_TRANSITIONS=431} [2024-06-28 02:50:40,297 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 191 predicate places. [2024-06-28 02:50:40,298 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 431 transitions, 5235 flow [2024-06-28 02:50:40,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:40,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:40,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:40,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:50:40,298 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:40,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash 800736522, now seen corresponding path program 13 times [2024-06-28 02:50:40,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:40,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492354094] [2024-06-28 02:50:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:40,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:41,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492354094] [2024-06-28 02:50:41,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492354094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:41,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:41,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:41,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339506251] [2024-06-28 02:50:41,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:41,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:41,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:41,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:41,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:41,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:41,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 431 transitions, 5235 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:41,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:41,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:41,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:42,251 INFO L124 PetriNetUnfolderBase]: 3325/5215 cut-off events. [2024-06-28 02:50:42,252 INFO L125 PetriNetUnfolderBase]: For 379239/379244 co-relation queries the response was YES. [2024-06-28 02:50:42,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42037 conditions, 5215 events. 3325/5215 cut-off events. For 379239/379244 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 30023 event pairs, 884 based on Foata normal form. 8/5221 useless extension candidates. Maximal degree in co-relation 41936. Up to 4508 conditions per place. [2024-06-28 02:50:42,306 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 294 selfloop transitions, 169 changer transitions 0/468 dead transitions. [2024-06-28 02:50:42,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 468 transitions, 6452 flow [2024-06-28 02:50:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 02:50:42,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-28 02:50:42,307 INFO L175 Difference]: Start difference. First operand has 235 places, 431 transitions, 5235 flow. Second operand 9 states and 176 transitions. [2024-06-28 02:50:42,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 468 transitions, 6452 flow [2024-06-28 02:50:42,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 468 transitions, 6171 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 02:50:42,782 INFO L231 Difference]: Finished difference. Result has 234 places, 433 transitions, 5380 flow [2024-06-28 02:50:42,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4954, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5380, PETRI_PLACES=234, PETRI_TRANSITIONS=433} [2024-06-28 02:50:42,784 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2024-06-28 02:50:42,784 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 433 transitions, 5380 flow [2024-06-28 02:50:42,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:42,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:42,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:50:42,784 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:42,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1516134099, now seen corresponding path program 4 times [2024-06-28 02:50:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016190966] [2024-06-28 02:50:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:43,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:43,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016190966] [2024-06-28 02:50:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016190966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:43,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:43,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062711745] [2024-06-28 02:50:43,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:43,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:43,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:50:43,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 433 transitions, 5380 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:43,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:43,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:50:43,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:44,453 INFO L124 PetriNetUnfolderBase]: 2846/4691 cut-off events. [2024-06-28 02:50:44,454 INFO L125 PetriNetUnfolderBase]: For 358487/358529 co-relation queries the response was YES. [2024-06-28 02:50:44,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37851 conditions, 4691 events. 2846/4691 cut-off events. For 358487/358529 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29066 event pairs, 946 based on Foata normal form. 12/4663 useless extension candidates. Maximal degree in co-relation 37751. Up to 3912 conditions per place. [2024-06-28 02:50:44,506 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 293 selfloop transitions, 53 changer transitions 0/455 dead transitions. [2024-06-28 02:50:44,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 455 transitions, 6226 flow [2024-06-28 02:50:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:50:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:50:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-28 02:50:44,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48172757475083056 [2024-06-28 02:50:44,507 INFO L175 Difference]: Start difference. First operand has 234 places, 433 transitions, 5380 flow. Second operand 7 states and 145 transitions. [2024-06-28 02:50:44,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 455 transitions, 6226 flow [2024-06-28 02:50:44,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 455 transitions, 5832 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:44,934 INFO L231 Difference]: Finished difference. Result has 234 places, 436 transitions, 5185 flow [2024-06-28 02:50:44,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4986, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5185, PETRI_PLACES=234, PETRI_TRANSITIONS=436} [2024-06-28 02:50:44,934 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2024-06-28 02:50:44,934 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 436 transitions, 5185 flow [2024-06-28 02:50:44,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:44,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:44,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:44,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:50:44,935 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:44,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:44,935 INFO L85 PathProgramCache]: Analyzing trace with hash 966375656, now seen corresponding path program 14 times [2024-06-28 02:50:44,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:44,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604200952] [2024-06-28 02:50:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:44,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:45,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604200952] [2024-06-28 02:50:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604200952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:45,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:45,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447832745] [2024-06-28 02:50:45,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:45,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:45,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:45,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:45,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:45,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:45,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 436 transitions, 5185 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:45,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:45,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:45,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:47,144 INFO L124 PetriNetUnfolderBase]: 3352/5260 cut-off events. [2024-06-28 02:50:47,145 INFO L125 PetriNetUnfolderBase]: For 339829/339832 co-relation queries the response was YES. [2024-06-28 02:50:47,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41386 conditions, 5260 events. 3352/5260 cut-off events. For 339829/339832 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 30286 event pairs, 718 based on Foata normal form. 6/5264 useless extension candidates. Maximal degree in co-relation 41285. Up to 4574 conditions per place. [2024-06-28 02:50:47,202 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 305 selfloop transitions, 162 changer transitions 0/472 dead transitions. [2024-06-28 02:50:47,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 472 transitions, 6413 flow [2024-06-28 02:50:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:47,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 02:50:47,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 02:50:47,204 INFO L175 Difference]: Start difference. First operand has 234 places, 436 transitions, 5185 flow. Second operand 9 states and 174 transitions. [2024-06-28 02:50:47,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 472 transitions, 6413 flow [2024-06-28 02:50:47,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 472 transitions, 6270 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:47,699 INFO L231 Difference]: Finished difference. Result has 238 places, 438 transitions, 5445 flow [2024-06-28 02:50:47,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5042, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5445, PETRI_PLACES=238, PETRI_TRANSITIONS=438} [2024-06-28 02:50:47,699 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 194 predicate places. [2024-06-28 02:50:47,699 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 438 transitions, 5445 flow [2024-06-28 02:50:47,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:47,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:47,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:47,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:50:47,700 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:47,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1741000056, now seen corresponding path program 2 times [2024-06-28 02:50:47,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:47,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504796111] [2024-06-28 02:50:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:47,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:48,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:48,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504796111] [2024-06-28 02:50:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504796111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:48,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461151974] [2024-06-28 02:50:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:48,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:48,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:48,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:48,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:48,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:48,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 438 transitions, 5445 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:48,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:48,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:48,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:50,003 INFO L124 PetriNetUnfolderBase]: 3369/5299 cut-off events. [2024-06-28 02:50:50,003 INFO L125 PetriNetUnfolderBase]: For 336065/336070 co-relation queries the response was YES. [2024-06-28 02:50:50,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41282 conditions, 5299 events. 3369/5299 cut-off events. For 336065/336070 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 30854 event pairs, 1051 based on Foata normal form. 6/5301 useless extension candidates. Maximal degree in co-relation 41180. Up to 4799 conditions per place. [2024-06-28 02:50:50,063 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 409 selfloop transitions, 64 changer transitions 0/478 dead transitions. [2024-06-28 02:50:50,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 478 transitions, 6681 flow [2024-06-28 02:50:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 02:50:50,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 02:50:50,064 INFO L175 Difference]: Start difference. First operand has 238 places, 438 transitions, 5445 flow. Second operand 9 states and 174 transitions. [2024-06-28 02:50:50,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 478 transitions, 6681 flow [2024-06-28 02:50:50,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 478 transitions, 6302 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:50,460 INFO L231 Difference]: Finished difference. Result has 241 places, 445 transitions, 5320 flow [2024-06-28 02:50:50,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5068, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5320, PETRI_PLACES=241, PETRI_TRANSITIONS=445} [2024-06-28 02:50:50,462 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 197 predicate places. [2024-06-28 02:50:50,462 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 445 transitions, 5320 flow [2024-06-28 02:50:50,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:50,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:50,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:50,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:50:50,462 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:50,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2031198739, now seen corresponding path program 2 times [2024-06-28 02:50:50,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:50,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195229081] [2024-06-28 02:50:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:50,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:51,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:51,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195229081] [2024-06-28 02:50:51,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195229081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:51,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:51,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:51,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104337742] [2024-06-28 02:50:51,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:51,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:51,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:51,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:51,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:50:51,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 445 transitions, 5320 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:51,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:51,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:50:51,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:52,417 INFO L124 PetriNetUnfolderBase]: 2884/4740 cut-off events. [2024-06-28 02:50:52,417 INFO L125 PetriNetUnfolderBase]: For 330601/330640 co-relation queries the response was YES. [2024-06-28 02:50:52,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37374 conditions, 4740 events. 2884/4740 cut-off events. For 330601/330640 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29312 event pairs, 993 based on Foata normal form. 10/4702 useless extension candidates. Maximal degree in co-relation 37270. Up to 4027 conditions per place. [2024-06-28 02:50:52,558 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 328 selfloop transitions, 24 changer transitions 0/462 dead transitions. [2024-06-28 02:50:52,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 462 transitions, 6134 flow [2024-06-28 02:50:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:50:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:50:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 02:50:52,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-28 02:50:52,560 INFO L175 Difference]: Start difference. First operand has 241 places, 445 transitions, 5320 flow. Second operand 7 states and 139 transitions. [2024-06-28 02:50:52,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 462 transitions, 6134 flow [2024-06-28 02:50:52,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 462 transitions, 5955 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:52,902 INFO L231 Difference]: Finished difference. Result has 242 places, 448 transitions, 5251 flow [2024-06-28 02:50:52,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5143, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5251, PETRI_PLACES=242, PETRI_TRANSITIONS=448} [2024-06-28 02:50:52,902 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 198 predicate places. [2024-06-28 02:50:52,903 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 448 transitions, 5251 flow [2024-06-28 02:50:52,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:52,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:52,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:52,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:50:52,903 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:52,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:52,904 INFO L85 PathProgramCache]: Analyzing trace with hash -390159447, now seen corresponding path program 5 times [2024-06-28 02:50:52,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:52,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389371097] [2024-06-28 02:50:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:52,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:53,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:53,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389371097] [2024-06-28 02:50:53,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389371097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:53,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:53,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:53,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313144641] [2024-06-28 02:50:53,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:53,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:53,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:53,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:53,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:50:53,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 448 transitions, 5251 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:53,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:53,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:50:53,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:54,713 INFO L124 PetriNetUnfolderBase]: 2884/4742 cut-off events. [2024-06-28 02:50:54,713 INFO L125 PetriNetUnfolderBase]: For 315918/315936 co-relation queries the response was YES. [2024-06-28 02:50:54,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37128 conditions, 4742 events. 2884/4742 cut-off events. For 315918/315936 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 29050 event pairs, 683 based on Foata normal form. 3/4707 useless extension candidates. Maximal degree in co-relation 37023. Up to 3910 conditions per place. [2024-06-28 02:50:54,759 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 292 selfloop transitions, 63 changer transitions 0/465 dead transitions. [2024-06-28 02:50:54,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 465 transitions, 6083 flow [2024-06-28 02:50:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:50:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:50:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 02:50:54,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684385382059801 [2024-06-28 02:50:54,760 INFO L175 Difference]: Start difference. First operand has 242 places, 448 transitions, 5251 flow. Second operand 7 states and 141 transitions. [2024-06-28 02:50:54,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 465 transitions, 6083 flow [2024-06-28 02:50:55,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 465 transitions, 6001 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:55,142 INFO L231 Difference]: Finished difference. Result has 244 places, 451 transitions, 5369 flow [2024-06-28 02:50:55,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5171, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5369, PETRI_PLACES=244, PETRI_TRANSITIONS=451} [2024-06-28 02:50:55,143 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 200 predicate places. [2024-06-28 02:50:55,143 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 451 transitions, 5369 flow [2024-06-28 02:50:55,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:55,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:55,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:55,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:50:55,144 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:55,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash 264921554, now seen corresponding path program 15 times [2024-06-28 02:50:55,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:55,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197062735] [2024-06-28 02:50:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:55,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:56,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:56,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197062735] [2024-06-28 02:50:56,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197062735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:56,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:56,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:56,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528951641] [2024-06-28 02:50:56,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:56,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:56,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:56,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:56,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 451 transitions, 5369 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:56,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:56,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:56,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:57,409 INFO L124 PetriNetUnfolderBase]: 3376/5298 cut-off events. [2024-06-28 02:50:57,409 INFO L125 PetriNetUnfolderBase]: For 322979/322981 co-relation queries the response was YES. [2024-06-28 02:50:57,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40758 conditions, 5298 events. 3376/5298 cut-off events. For 322979/322981 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 30502 event pairs, 731 based on Foata normal form. 4/5288 useless extension candidates. Maximal degree in co-relation 40652. Up to 4631 conditions per place. [2024-06-28 02:50:57,461 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 318 selfloop transitions, 157 changer transitions 0/480 dead transitions. [2024-06-28 02:50:57,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 480 transitions, 6530 flow [2024-06-28 02:50:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:57,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:57,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 02:50:57,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:50:57,462 INFO L175 Difference]: Start difference. First operand has 244 places, 451 transitions, 5369 flow. Second operand 9 states and 171 transitions. [2024-06-28 02:50:57,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 480 transitions, 6530 flow [2024-06-28 02:50:57,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 480 transitions, 6360 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:57,942 INFO L231 Difference]: Finished difference. Result has 248 places, 453 transitions, 5588 flow [2024-06-28 02:50:57,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5199, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5588, PETRI_PLACES=248, PETRI_TRANSITIONS=453} [2024-06-28 02:50:57,943 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 204 predicate places. [2024-06-28 02:50:57,943 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 453 transitions, 5588 flow [2024-06-28 02:50:57,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:57,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:57,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:57,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:50:57,943 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:57,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:57,944 INFO L85 PathProgramCache]: Analyzing trace with hash -110514220, now seen corresponding path program 3 times [2024-06-28 02:50:57,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:57,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885531582] [2024-06-28 02:50:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:57,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:59,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:59,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885531582] [2024-06-28 02:50:59,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885531582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:59,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:59,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:59,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451699804] [2024-06-28 02:50:59,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:59,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:59,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:59,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:50:59,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 453 transitions, 5588 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:50:59,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:59,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:50:59,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:00,315 INFO L124 PetriNetUnfolderBase]: 3411/5377 cut-off events. [2024-06-28 02:51:00,315 INFO L125 PetriNetUnfolderBase]: For 330637/330643 co-relation queries the response was YES. [2024-06-28 02:51:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41249 conditions, 5377 events. 3411/5377 cut-off events. For 330637/330643 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 31499 event pairs, 1044 based on Foata normal form. 8/5382 useless extension candidates. Maximal degree in co-relation 41142. Up to 4873 conditions per place. [2024-06-28 02:51:00,379 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 415 selfloop transitions, 78 changer transitions 0/498 dead transitions. [2024-06-28 02:51:00,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 498 transitions, 6907 flow [2024-06-28 02:51:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 02:51:00,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-28 02:51:00,381 INFO L175 Difference]: Start difference. First operand has 248 places, 453 transitions, 5588 flow. Second operand 9 states and 169 transitions. [2024-06-28 02:51:00,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 498 transitions, 6907 flow [2024-06-28 02:51:00,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 498 transitions, 6540 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:00,806 INFO L231 Difference]: Finished difference. Result has 251 places, 470 transitions, 5599 flow [2024-06-28 02:51:00,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5221, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5599, PETRI_PLACES=251, PETRI_TRANSITIONS=470} [2024-06-28 02:51:00,806 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 207 predicate places. [2024-06-28 02:51:00,806 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 470 transitions, 5599 flow [2024-06-28 02:51:00,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:51:00,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:00,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:00,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:51:00,807 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:00,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:00,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1892862964, now seen corresponding path program 4 times [2024-06-28 02:51:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:00,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354899643] [2024-06-28 02:51:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:00,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:01,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:01,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354899643] [2024-06-28 02:51:01,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354899643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:01,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:01,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:01,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637577624] [2024-06-28 02:51:01,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:01,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:01,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:01,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:02,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:02,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 470 transitions, 5599 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:51:02,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:02,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:02,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:03,263 INFO L124 PetriNetUnfolderBase]: 3428/5406 cut-off events. [2024-06-28 02:51:03,264 INFO L125 PetriNetUnfolderBase]: For 342745/342751 co-relation queries the response was YES. [2024-06-28 02:51:03,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41794 conditions, 5406 events. 3428/5406 cut-off events. For 342745/342751 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 31729 event pairs, 1057 based on Foata normal form. 8/5411 useless extension candidates. Maximal degree in co-relation 41685. Up to 4900 conditions per place. [2024-06-28 02:51:03,324 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 423 selfloop transitions, 73 changer transitions 0/501 dead transitions. [2024-06-28 02:51:03,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 501 transitions, 6801 flow [2024-06-28 02:51:03,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 02:51:03,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 02:51:03,325 INFO L175 Difference]: Start difference. First operand has 251 places, 470 transitions, 5599 flow. Second operand 9 states and 171 transitions. [2024-06-28 02:51:03,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 501 transitions, 6801 flow [2024-06-28 02:51:03,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 501 transitions, 6651 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 02:51:03,764 INFO L231 Difference]: Finished difference. Result has 257 places, 473 transitions, 5687 flow [2024-06-28 02:51:03,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5449, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5687, PETRI_PLACES=257, PETRI_TRANSITIONS=473} [2024-06-28 02:51:03,764 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 213 predicate places. [2024-06-28 02:51:03,765 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 473 transitions, 5687 flow [2024-06-28 02:51:03,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:51:03,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:03,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:03,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:51:03,765 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:03,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1763685550, now seen corresponding path program 5 times [2024-06-28 02:51:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:03,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360268868] [2024-06-28 02:51:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:03,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:04,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:04,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360268868] [2024-06-28 02:51:04,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360268868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:04,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:04,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:04,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043119769] [2024-06-28 02:51:04,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:04,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:04,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:04,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:04,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:04,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 473 transitions, 5687 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:51:04,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:04,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:04,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:06,277 INFO L124 PetriNetUnfolderBase]: 3445/5437 cut-off events. [2024-06-28 02:51:06,277 INFO L125 PetriNetUnfolderBase]: For 355864/355870 co-relation queries the response was YES. [2024-06-28 02:51:06,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41976 conditions, 5437 events. 3445/5437 cut-off events. For 355864/355870 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 31938 event pairs, 1065 based on Foata normal form. 8/5442 useless extension candidates. Maximal degree in co-relation 41865. Up to 4927 conditions per place. [2024-06-28 02:51:06,329 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 421 selfloop transitions, 76 changer transitions 0/502 dead transitions. [2024-06-28 02:51:06,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 502 transitions, 6881 flow [2024-06-28 02:51:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 02:51:06,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392764857881137 [2024-06-28 02:51:06,331 INFO L175 Difference]: Start difference. First operand has 257 places, 473 transitions, 5687 flow. Second operand 9 states and 170 transitions. [2024-06-28 02:51:06,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 502 transitions, 6881 flow [2024-06-28 02:51:06,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 502 transitions, 6679 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:06,809 INFO L231 Difference]: Finished difference. Result has 260 places, 475 transitions, 5715 flow [2024-06-28 02:51:06,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5485, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5715, PETRI_PLACES=260, PETRI_TRANSITIONS=475} [2024-06-28 02:51:06,810 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 216 predicate places. [2024-06-28 02:51:06,810 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 475 transitions, 5715 flow [2024-06-28 02:51:06,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:51:06,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:06,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:06,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:51:06,811 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:06,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2059260940, now seen corresponding path program 6 times [2024-06-28 02:51:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:06,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487446964] [2024-06-28 02:51:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:06,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:07,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:07,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487446964] [2024-06-28 02:51:07,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487446964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:07,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:07,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:07,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043465890] [2024-06-28 02:51:07,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:07,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:07,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:08,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:08,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 475 transitions, 5715 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:51:08,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:08,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:08,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:09,463 INFO L124 PetriNetUnfolderBase]: 3437/5424 cut-off events. [2024-06-28 02:51:09,463 INFO L125 PetriNetUnfolderBase]: For 364230/364236 co-relation queries the response was YES. [2024-06-28 02:51:09,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41934 conditions, 5424 events. 3437/5424 cut-off events. For 364230/364236 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 31888 event pairs, 1011 based on Foata normal form. 8/5429 useless extension candidates. Maximal degree in co-relation 41822. Up to 4793 conditions per place. [2024-06-28 02:51:09,534 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 411 selfloop transitions, 90 changer transitions 0/506 dead transitions. [2024-06-28 02:51:09,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 506 transitions, 6948 flow [2024-06-28 02:51:09,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 02:51:09,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392764857881137 [2024-06-28 02:51:09,535 INFO L175 Difference]: Start difference. First operand has 260 places, 475 transitions, 5715 flow. Second operand 9 states and 170 transitions. [2024-06-28 02:51:09,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 506 transitions, 6948 flow [2024-06-28 02:51:09,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 506 transitions, 6683 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:09,988 INFO L231 Difference]: Finished difference. Result has 259 places, 477 transitions, 5711 flow [2024-06-28 02:51:09,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5450, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5711, PETRI_PLACES=259, PETRI_TRANSITIONS=477} [2024-06-28 02:51:09,988 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 215 predicate places. [2024-06-28 02:51:09,988 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 477 transitions, 5711 flow [2024-06-28 02:51:09,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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) [2024-06-28 02:51:09,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:09,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:09,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:51:09,989 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:09,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:09,989 INFO L85 PathProgramCache]: Analyzing trace with hash 23623097, now seen corresponding path program 3 times [2024-06-28 02:51:09,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:09,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662410002] [2024-06-28 02:51:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:09,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:11,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662410002] [2024-06-28 02:51:11,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662410002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:11,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:11,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:11,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284288536] [2024-06-28 02:51:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:11,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:11,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:11,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:11,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:51:11,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 477 transitions, 5711 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:11,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:11,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:51:11,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:12,010 INFO L124 PetriNetUnfolderBase]: 2947/4847 cut-off events. [2024-06-28 02:51:12,010 INFO L125 PetriNetUnfolderBase]: For 373148/373191 co-relation queries the response was YES. [2024-06-28 02:51:12,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38340 conditions, 4847 events. 2947/4847 cut-off events. For 373148/373191 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30107 event pairs, 997 based on Foata normal form. 12/4802 useless extension candidates. Maximal degree in co-relation 38230. Up to 4112 conditions per place. [2024-06-28 02:51:12,068 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 349 selfloop transitions, 35 changer transitions 0/495 dead transitions. [2024-06-28 02:51:12,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 495 transitions, 6737 flow [2024-06-28 02:51:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 02:51:12,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2024-06-28 02:51:12,069 INFO L175 Difference]: Start difference. First operand has 259 places, 477 transitions, 5711 flow. Second operand 7 states and 137 transitions. [2024-06-28 02:51:12,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 495 transitions, 6737 flow [2024-06-28 02:51:12,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 495 transitions, 6494 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:12,447 INFO L231 Difference]: Finished difference. Result has 260 places, 485 transitions, 5681 flow [2024-06-28 02:51:12,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5468, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5681, PETRI_PLACES=260, PETRI_TRANSITIONS=485} [2024-06-28 02:51:12,457 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 216 predicate places. [2024-06-28 02:51:12,457 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 485 transitions, 5681 flow [2024-06-28 02:51:12,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:12,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:12,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:51:12,458 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:12,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:12,458 INFO L85 PathProgramCache]: Analyzing trace with hash 23147433, now seen corresponding path program 6 times [2024-06-28 02:51:12,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:12,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433490229] [2024-06-28 02:51:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:12,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:13,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:13,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433490229] [2024-06-28 02:51:13,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433490229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:13,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:13,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:51:13,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874250417] [2024-06-28 02:51:13,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:13,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:51:13,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:13,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:51:13,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:51:13,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:51:13,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 485 transitions, 5681 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:13,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:13,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:51:13,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:14,356 INFO L124 PetriNetUnfolderBase]: 2939/4833 cut-off events. [2024-06-28 02:51:14,356 INFO L125 PetriNetUnfolderBase]: For 369613/369622 co-relation queries the response was YES. [2024-06-28 02:51:14,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38423 conditions, 4833 events. 2939/4833 cut-off events. For 369613/369622 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 29757 event pairs, 692 based on Foata normal form. 6/4791 useless extension candidates. Maximal degree in co-relation 38311. Up to 3991 conditions per place. [2024-06-28 02:51:14,412 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 318 selfloop transitions, 68 changer transitions 0/497 dead transitions. [2024-06-28 02:51:14,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 497 transitions, 6547 flow [2024-06-28 02:51:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:14,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 02:51:14,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2024-06-28 02:51:14,413 INFO L175 Difference]: Start difference. First operand has 260 places, 485 transitions, 5681 flow. Second operand 7 states and 137 transitions. [2024-06-28 02:51:14,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 497 transitions, 6547 flow [2024-06-28 02:51:14,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 497 transitions, 6472 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 02:51:14,944 INFO L231 Difference]: Finished difference. Result has 264 places, 488 transitions, 5812 flow [2024-06-28 02:51:14,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5606, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5812, PETRI_PLACES=264, PETRI_TRANSITIONS=488} [2024-06-28 02:51:14,945 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 220 predicate places. [2024-06-28 02:51:14,945 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 488 transitions, 5812 flow [2024-06-28 02:51:14,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:14,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:14,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:14,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:51:14,945 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:14,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1503753505, now seen corresponding path program 4 times [2024-06-28 02:51:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:14,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466519647] [2024-06-28 02:51:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:14,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:15,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:15,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466519647] [2024-06-28 02:51:15,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466519647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:15,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772212645] [2024-06-28 02:51:15,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:15,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:16,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:51:16,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 488 transitions, 5812 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:16,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:16,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:51:16,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:17,010 INFO L124 PetriNetUnfolderBase]: 2941/4844 cut-off events. [2024-06-28 02:51:17,010 INFO L125 PetriNetUnfolderBase]: For 394400/394433 co-relation queries the response was YES. [2024-06-28 02:51:17,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38946 conditions, 4844 events. 2941/4844 cut-off events. For 394400/394433 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 30147 event pairs, 997 based on Foata normal form. 12/4807 useless extension candidates. Maximal degree in co-relation 38832. Up to 4117 conditions per place. [2024-06-28 02:51:17,069 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 362 selfloop transitions, 25 changer transitions 0/498 dead transitions. [2024-06-28 02:51:17,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 498 transitions, 6629 flow [2024-06-28 02:51:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:17,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:17,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 02:51:17,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-28 02:51:17,071 INFO L175 Difference]: Start difference. First operand has 264 places, 488 transitions, 5812 flow. Second operand 7 states and 135 transitions. [2024-06-28 02:51:17,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 498 transitions, 6629 flow [2024-06-28 02:51:17,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 498 transitions, 6411 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 02:51:17,532 INFO L231 Difference]: Finished difference. Result has 266 places, 489 transitions, 5659 flow [2024-06-28 02:51:17,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5594, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5659, PETRI_PLACES=266, PETRI_TRANSITIONS=489} [2024-06-28 02:51:17,533 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 222 predicate places. [2024-06-28 02:51:17,533 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 489 transitions, 5659 flow [2024-06-28 02:51:17,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:17,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:17,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:17,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:51:17,534 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:17,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash -183440256, now seen corresponding path program 1 times [2024-06-28 02:51:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552746472] [2024-06-28 02:51:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:18,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552746472] [2024-06-28 02:51:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552746472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:18,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:18,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:18,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433671577] [2024-06-28 02:51:18,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:18,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:18,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:18,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:18,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:18,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:51:18,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 489 transitions, 5659 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:18,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:18,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:51:18,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:19,335 INFO L124 PetriNetUnfolderBase]: 3179/5140 cut-off events. [2024-06-28 02:51:19,335 INFO L125 PetriNetUnfolderBase]: For 406247/406266 co-relation queries the response was YES. [2024-06-28 02:51:19,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40677 conditions, 5140 events. 3179/5140 cut-off events. For 406247/406266 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 31246 event pairs, 1132 based on Foata normal form. 20/5145 useless extension candidates. Maximal degree in co-relation 40562. Up to 4549 conditions per place. [2024-06-28 02:51:19,387 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 445 selfloop transitions, 15 changer transitions 0/508 dead transitions. [2024-06-28 02:51:19,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 508 transitions, 6711 flow [2024-06-28 02:51:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 02:51:19,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:51:19,388 INFO L175 Difference]: Start difference. First operand has 266 places, 489 transitions, 5659 flow. Second operand 7 states and 140 transitions. [2024-06-28 02:51:19,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 508 transitions, 6711 flow [2024-06-28 02:51:19,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 508 transitions, 6657 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:51:19,928 INFO L231 Difference]: Finished difference. Result has 268 places, 492 transitions, 5695 flow [2024-06-28 02:51:19,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5605, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5695, PETRI_PLACES=268, PETRI_TRANSITIONS=492} [2024-06-28 02:51:19,928 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 224 predicate places. [2024-06-28 02:51:19,928 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 492 transitions, 5695 flow [2024-06-28 02:51:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:19,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:19,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:19,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:51:19,929 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:19,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash -848809509, now seen corresponding path program 1 times [2024-06-28 02:51:19,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:19,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531517444] [2024-06-28 02:51:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:20,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:20,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:20,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531517444] [2024-06-28 02:51:20,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531517444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:20,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:20,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:20,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768372326] [2024-06-28 02:51:20,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:20,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:20,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:20,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:51:20,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 492 transitions, 5695 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:20,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:20,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:51:20,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:21,848 INFO L124 PetriNetUnfolderBase]: 3194/5161 cut-off events. [2024-06-28 02:51:21,849 INFO L125 PetriNetUnfolderBase]: For 420403/420422 co-relation queries the response was YES. [2024-06-28 02:51:21,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41342 conditions, 5161 events. 3194/5161 cut-off events. For 420403/420422 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 31376 event pairs, 1132 based on Foata normal form. 21/5168 useless extension candidates. Maximal degree in co-relation 41226. Up to 4574 conditions per place. [2024-06-28 02:51:21,901 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 445 selfloop transitions, 15 changer transitions 0/508 dead transitions. [2024-06-28 02:51:21,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 508 transitions, 6723 flow [2024-06-28 02:51:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 02:51:21,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2024-06-28 02:51:21,902 INFO L175 Difference]: Start difference. First operand has 268 places, 492 transitions, 5695 flow. Second operand 7 states and 137 transitions. [2024-06-28 02:51:21,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 508 transitions, 6723 flow [2024-06-28 02:51:22,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 508 transitions, 6655 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:51:22,446 INFO L231 Difference]: Finished difference. Result has 270 places, 495 transitions, 5717 flow [2024-06-28 02:51:22,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5627, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5717, PETRI_PLACES=270, PETRI_TRANSITIONS=495} [2024-06-28 02:51:22,447 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 226 predicate places. [2024-06-28 02:51:22,447 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 495 transitions, 5717 flow [2024-06-28 02:51:22,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:22,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:22,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:51:22,448 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:22,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -183290526, now seen corresponding path program 2 times [2024-06-28 02:51:22,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:22,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324743058] [2024-06-28 02:51:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:23,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:23,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324743058] [2024-06-28 02:51:23,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324743058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:23,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:23,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:51:23,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609243509] [2024-06-28 02:51:23,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:23,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:51:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:51:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:51:23,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:51:23,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 495 transitions, 5717 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:23,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:23,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:51:23,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:24,395 INFO L124 PetriNetUnfolderBase]: 3204/5177 cut-off events. [2024-06-28 02:51:24,395 INFO L125 PetriNetUnfolderBase]: For 431073/431092 co-relation queries the response was YES. [2024-06-28 02:51:24,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41899 conditions, 5177 events. 3204/5177 cut-off events. For 431073/431092 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31483 event pairs, 1132 based on Foata normal form. 20/5183 useless extension candidates. Maximal degree in co-relation 41782. Up to 4573 conditions per place. [2024-06-28 02:51:24,461 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 444 selfloop transitions, 20 changer transitions 0/512 dead transitions. [2024-06-28 02:51:24,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 512 transitions, 6767 flow [2024-06-28 02:51:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:24,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 02:51:24,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 02:51:24,462 INFO L175 Difference]: Start difference. First operand has 270 places, 495 transitions, 5717 flow. Second operand 7 states and 140 transitions. [2024-06-28 02:51:24,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 512 transitions, 6767 flow [2024-06-28 02:51:25,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 512 transitions, 6699 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:51:25,035 INFO L231 Difference]: Finished difference. Result has 272 places, 498 transitions, 5757 flow [2024-06-28 02:51:25,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5649, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5757, PETRI_PLACES=272, PETRI_TRANSITIONS=498} [2024-06-28 02:51:25,036 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 228 predicate places. [2024-06-28 02:51:25,036 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 498 transitions, 5757 flow [2024-06-28 02:51:25,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:25,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:25,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:25,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:51:25,037 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:25,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:25,037 INFO L85 PathProgramCache]: Analyzing trace with hash 23630041, now seen corresponding path program 2 times [2024-06-28 02:51:25,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:25,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665693372] [2024-06-28 02:51:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:25,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:26,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665693372] [2024-06-28 02:51:26,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665693372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:26,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:26,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:26,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430994143] [2024-06-28 02:51:26,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:26,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:26,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:26,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:26,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:26,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:51:26,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 498 transitions, 5757 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:26,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:26,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:51:26,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:27,162 INFO L124 PetriNetUnfolderBase]: 3214/5194 cut-off events. [2024-06-28 02:51:27,163 INFO L125 PetriNetUnfolderBase]: For 446060/446082 co-relation queries the response was YES. [2024-06-28 02:51:27,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42485 conditions, 5194 events. 3214/5194 cut-off events. For 446060/446082 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 31615 event pairs, 1135 based on Foata normal form. 23/5202 useless extension candidates. Maximal degree in co-relation 42367. Up to 4569 conditions per place. [2024-06-28 02:51:27,225 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 438 selfloop transitions, 30 changer transitions 0/516 dead transitions. [2024-06-28 02:51:27,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 516 transitions, 6967 flow [2024-06-28 02:51:27,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:27,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 02:51:27,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-28 02:51:27,226 INFO L175 Difference]: Start difference. First operand has 272 places, 498 transitions, 5757 flow. Second operand 7 states and 139 transitions. [2024-06-28 02:51:27,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 516 transitions, 6967 flow [2024-06-28 02:51:27,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 516 transitions, 6881 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 02:51:27,746 INFO L231 Difference]: Finished difference. Result has 274 places, 504 transitions, 5856 flow [2024-06-28 02:51:27,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5671, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5856, PETRI_PLACES=274, PETRI_TRANSITIONS=504} [2024-06-28 02:51:27,746 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 230 predicate places. [2024-06-28 02:51:27,747 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 504 transitions, 5856 flow [2024-06-28 02:51:27,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:27,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:27,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:27,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:51:27,747 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:27,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:27,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1566473672, now seen corresponding path program 3 times [2024-06-28 02:51:27,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:27,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642623192] [2024-06-28 02:51:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:27,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:28,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:28,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642623192] [2024-06-28 02:51:28,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642623192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:28,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:28,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:28,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941219775] [2024-06-28 02:51:28,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:28,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:28,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:28,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:28,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:28,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:51:28,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 504 transitions, 5856 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:28,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:28,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:51:28,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:29,579 INFO L124 PetriNetUnfolderBase]: 3216/5200 cut-off events. [2024-06-28 02:51:29,579 INFO L125 PetriNetUnfolderBase]: For 457029/457051 co-relation queries the response was YES. [2024-06-28 02:51:29,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42913 conditions, 5200 events. 3216/5200 cut-off events. For 457029/457051 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 31690 event pairs, 1141 based on Foata normal form. 22/5206 useless extension candidates. Maximal degree in co-relation 42794. Up to 4578 conditions per place. [2024-06-28 02:51:29,639 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 443 selfloop transitions, 27 changer transitions 0/518 dead transitions. [2024-06-28 02:51:29,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 518 transitions, 6904 flow [2024-06-28 02:51:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 02:51:29,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-28 02:51:29,641 INFO L175 Difference]: Start difference. First operand has 274 places, 504 transitions, 5856 flow. Second operand 7 states and 139 transitions. [2024-06-28 02:51:29,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 518 transitions, 6904 flow [2024-06-28 02:51:30,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 518 transitions, 6827 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 02:51:30,135 INFO L231 Difference]: Finished difference. Result has 278 places, 507 transitions, 5909 flow [2024-06-28 02:51:30,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5779, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5909, PETRI_PLACES=278, PETRI_TRANSITIONS=507} [2024-06-28 02:51:30,136 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 234 predicate places. [2024-06-28 02:51:30,136 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 507 transitions, 5909 flow [2024-06-28 02:51:30,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:30,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:30,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:30,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:51:30,137 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:30,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:30,137 INFO L85 PathProgramCache]: Analyzing trace with hash 23363131, now seen corresponding path program 3 times [2024-06-28 02:51:30,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:30,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790002846] [2024-06-28 02:51:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:30,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790002846] [2024-06-28 02:51:31,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790002846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:31,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:31,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:31,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473233095] [2024-06-28 02:51:31,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:31,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:31,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:31,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:31,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:31,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:51:31,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 507 transitions, 5909 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:31,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:31,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:51:31,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:32,075 INFO L124 PetriNetUnfolderBase]: 3207/5187 cut-off events. [2024-06-28 02:51:32,076 INFO L125 PetriNetUnfolderBase]: For 465280/465302 co-relation queries the response was YES. [2024-06-28 02:51:32,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43039 conditions, 5187 events. 3207/5187 cut-off events. For 465280/465302 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 31730 event pairs, 1135 based on Foata normal form. 23/5195 useless extension candidates. Maximal degree in co-relation 42918. Up to 4588 conditions per place. [2024-06-28 02:51:32,142 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 449 selfloop transitions, 20 changer transitions 0/517 dead transitions. [2024-06-28 02:51:32,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 517 transitions, 6885 flow [2024-06-28 02:51:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:32,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 02:51:32,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-28 02:51:32,143 INFO L175 Difference]: Start difference. First operand has 278 places, 507 transitions, 5909 flow. Second operand 7 states and 136 transitions. [2024-06-28 02:51:32,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 517 transitions, 6885 flow [2024-06-28 02:51:32,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 517 transitions, 6745 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 02:51:32,691 INFO L231 Difference]: Finished difference. Result has 280 places, 507 transitions, 5815 flow [2024-06-28 02:51:32,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5769, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5815, PETRI_PLACES=280, PETRI_TRANSITIONS=507} [2024-06-28 02:51:32,692 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 236 predicate places. [2024-06-28 02:51:32,692 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 507 transitions, 5815 flow [2024-06-28 02:51:32,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:32,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:32,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:32,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:51:32,692 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:32,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1477270329, now seen corresponding path program 1 times [2024-06-28 02:51:32,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:32,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975430794] [2024-06-28 02:51:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:32,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975430794] [2024-06-28 02:51:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975430794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:33,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:33,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284093199] [2024-06-28 02:51:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:33,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:33,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:33,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:33,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:33,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 507 transitions, 5815 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:33,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:33,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:33,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:34,914 INFO L124 PetriNetUnfolderBase]: 3667/5812 cut-off events. [2024-06-28 02:51:34,914 INFO L125 PetriNetUnfolderBase]: For 535541/535545 co-relation queries the response was YES. [2024-06-28 02:51:34,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48639 conditions, 5812 events. 3667/5812 cut-off events. For 535541/535545 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34883 event pairs, 947 based on Foata normal form. 20/5831 useless extension candidates. Maximal degree in co-relation 48517. Up to 4745 conditions per place. [2024-06-28 02:51:34,989 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 465 selfloop transitions, 106 changer transitions 0/576 dead transitions. [2024-06-28 02:51:34,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 576 transitions, 7624 flow [2024-06-28 02:51:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:51:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:51:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 257 transitions. [2024-06-28 02:51:34,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4597495527728086 [2024-06-28 02:51:34,991 INFO L175 Difference]: Start difference. First operand has 280 places, 507 transitions, 5815 flow. Second operand 13 states and 257 transitions. [2024-06-28 02:51:34,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 576 transitions, 7624 flow [2024-06-28 02:51:35,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 576 transitions, 7564 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:35,571 INFO L231 Difference]: Finished difference. Result has 288 places, 513 transitions, 6131 flow [2024-06-28 02:51:35,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5755, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6131, PETRI_PLACES=288, PETRI_TRANSITIONS=513} [2024-06-28 02:51:35,571 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2024-06-28 02:51:35,571 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 513 transitions, 6131 flow [2024-06-28 02:51:35,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:35,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:35,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:35,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:51:35,572 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:35,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash -131498315, now seen corresponding path program 2 times [2024-06-28 02:51:35,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:35,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893078478] [2024-06-28 02:51:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:36,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:36,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893078478] [2024-06-28 02:51:36,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893078478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:36,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:36,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:36,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5218124] [2024-06-28 02:51:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:36,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:36,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:36,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:36,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:36,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:36,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 513 transitions, 6131 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:36,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:36,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:36,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:38,059 INFO L124 PetriNetUnfolderBase]: 3811/6067 cut-off events. [2024-06-28 02:51:38,059 INFO L125 PetriNetUnfolderBase]: For 587378/587382 co-relation queries the response was YES. [2024-06-28 02:51:38,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52109 conditions, 6067 events. 3811/6067 cut-off events. For 587378/587382 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36892 event pairs, 1084 based on Foata normal form. 20/6086 useless extension candidates. Maximal degree in co-relation 51985. Up to 5168 conditions per place. [2024-06-28 02:51:38,127 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 481 selfloop transitions, 92 changer transitions 0/578 dead transitions. [2024-06-28 02:51:38,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 578 transitions, 7946 flow [2024-06-28 02:51:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:51:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:51:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 255 transitions. [2024-06-28 02:51:38,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561717352415027 [2024-06-28 02:51:38,129 INFO L175 Difference]: Start difference. First operand has 288 places, 513 transitions, 6131 flow. Second operand 13 states and 255 transitions. [2024-06-28 02:51:38,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 578 transitions, 7946 flow [2024-06-28 02:51:38,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 578 transitions, 7810 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:38,785 INFO L231 Difference]: Finished difference. Result has 294 places, 518 transitions, 6315 flow [2024-06-28 02:51:38,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6003, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6315, PETRI_PLACES=294, PETRI_TRANSITIONS=518} [2024-06-28 02:51:38,786 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 250 predicate places. [2024-06-28 02:51:38,786 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 518 transitions, 6315 flow [2024-06-28 02:51:38,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:38,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:38,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:38,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:51:38,787 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:38,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:38,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1114186637, now seen corresponding path program 3 times [2024-06-28 02:51:38,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:38,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578683914] [2024-06-28 02:51:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:38,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:39,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:39,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578683914] [2024-06-28 02:51:39,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578683914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:39,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:39,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:39,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871197115] [2024-06-28 02:51:39,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:39,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:39,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:39,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:39,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:39,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:39,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 518 transitions, 6315 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:39,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:39,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:39,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:41,284 INFO L124 PetriNetUnfolderBase]: 3775/6019 cut-off events. [2024-06-28 02:51:41,284 INFO L125 PetriNetUnfolderBase]: For 573415/573419 co-relation queries the response was YES. [2024-06-28 02:51:41,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50717 conditions, 6019 events. 3775/6019 cut-off events. For 573415/573419 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 36707 event pairs, 1119 based on Foata normal form. 24/6042 useless extension candidates. Maximal degree in co-relation 50591. Up to 5313 conditions per place. [2024-06-28 02:51:41,349 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 480 selfloop transitions, 86 changer transitions 0/571 dead transitions. [2024-06-28 02:51:41,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 571 transitions, 7735 flow [2024-06-28 02:51:41,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:51:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:51:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 249 transitions. [2024-06-28 02:51:41,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44543828264758495 [2024-06-28 02:51:41,350 INFO L175 Difference]: Start difference. First operand has 294 places, 518 transitions, 6315 flow. Second operand 13 states and 249 transitions. [2024-06-28 02:51:41,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 571 transitions, 7735 flow [2024-06-28 02:51:42,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 571 transitions, 7569 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:42,057 INFO L231 Difference]: Finished difference. Result has 299 places, 518 transitions, 6328 flow [2024-06-28 02:51:42,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6149, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6328, PETRI_PLACES=299, PETRI_TRANSITIONS=518} [2024-06-28 02:51:42,057 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 255 predicate places. [2024-06-28 02:51:42,057 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 518 transitions, 6328 flow [2024-06-28 02:51:42,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:42,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:42,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:42,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:51:42,058 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:42,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:42,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1376070297, now seen corresponding path program 4 times [2024-06-28 02:51:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:42,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324015482] [2024-06-28 02:51:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:42,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:42,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:42,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324015482] [2024-06-28 02:51:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324015482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:42,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:42,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:42,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822080296] [2024-06-28 02:51:42,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:42,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:42,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:42,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:42,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:42,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:42,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 518 transitions, 6328 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:42,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:42,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:42,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:44,443 INFO L124 PetriNetUnfolderBase]: 4179/6684 cut-off events. [2024-06-28 02:51:44,443 INFO L125 PetriNetUnfolderBase]: For 650049/650053 co-relation queries the response was YES. [2024-06-28 02:51:44,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57309 conditions, 6684 events. 4179/6684 cut-off events. For 650049/650053 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 41593 event pairs, 896 based on Foata normal form. 20/6703 useless extension candidates. Maximal degree in co-relation 57181. Up to 4433 conditions per place. [2024-06-28 02:51:44,667 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 448 selfloop transitions, 136 changer transitions 0/589 dead transitions. [2024-06-28 02:51:44,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 589 transitions, 8474 flow [2024-06-28 02:51:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:51:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:51:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 243 transitions. [2024-06-28 02:51:44,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-06-28 02:51:44,669 INFO L175 Difference]: Start difference. First operand has 299 places, 518 transitions, 6328 flow. Second operand 12 states and 243 transitions. [2024-06-28 02:51:44,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 589 transitions, 8474 flow [2024-06-28 02:51:45,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 589 transitions, 8279 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:51:45,436 INFO L231 Difference]: Finished difference. Result has 300 places, 526 transitions, 6722 flow [2024-06-28 02:51:45,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6137, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6722, PETRI_PLACES=300, PETRI_TRANSITIONS=526} [2024-06-28 02:51:45,436 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 256 predicate places. [2024-06-28 02:51:45,436 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 526 transitions, 6722 flow [2024-06-28 02:51:45,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:45,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:45,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:45,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:51:45,437 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:45,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash 468399723, now seen corresponding path program 5 times [2024-06-28 02:51:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:45,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068114094] [2024-06-28 02:51:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:46,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:46,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068114094] [2024-06-28 02:51:46,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068114094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:46,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:46,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:46,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273419446] [2024-06-28 02:51:46,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:46,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:46,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:46,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:46,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:46,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 526 transitions, 6722 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:46,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:46,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:46,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:48,323 INFO L124 PetriNetUnfolderBase]: 4743/7658 cut-off events. [2024-06-28 02:51:48,324 INFO L125 PetriNetUnfolderBase]: For 808621/808625 co-relation queries the response was YES. [2024-06-28 02:51:48,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68527 conditions, 7658 events. 4743/7658 cut-off events. For 808621/808625 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 49708 event pairs, 1516 based on Foata normal form. 28/7685 useless extension candidates. Maximal degree in co-relation 68397. Up to 6143 conditions per place. [2024-06-28 02:51:48,420 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 498 selfloop transitions, 98 changer transitions 0/601 dead transitions. [2024-06-28 02:51:48,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 601 transitions, 8948 flow [2024-06-28 02:51:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:51:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:51:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-06-28 02:51:48,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-28 02:51:48,422 INFO L175 Difference]: Start difference. First operand has 300 places, 526 transitions, 6722 flow. Second operand 12 states and 238 transitions. [2024-06-28 02:51:48,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 601 transitions, 8948 flow [2024-06-28 02:51:49,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 601 transitions, 8685 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:49,378 INFO L231 Difference]: Finished difference. Result has 307 places, 544 transitions, 7276 flow [2024-06-28 02:51:49,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6556, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7276, PETRI_PLACES=307, PETRI_TRANSITIONS=544} [2024-06-28 02:51:49,379 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2024-06-28 02:51:49,379 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 544 transitions, 7276 flow [2024-06-28 02:51:49,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:49,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:49,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:49,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:51:49,380 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:49,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:49,381 INFO L85 PathProgramCache]: Analyzing trace with hash 872978843, now seen corresponding path program 6 times [2024-06-28 02:51:49,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:49,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482911090] [2024-06-28 02:51:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482911090] [2024-06-28 02:51:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482911090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:50,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:50,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:50,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63409549] [2024-06-28 02:51:50,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:50,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:50,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:50,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:50,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:50,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:50,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 544 transitions, 7276 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:50,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:50,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:50,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:52,362 INFO L124 PetriNetUnfolderBase]: 4859/7887 cut-off events. [2024-06-28 02:51:52,363 INFO L125 PetriNetUnfolderBase]: For 850119/850123 co-relation queries the response was YES. [2024-06-28 02:51:52,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69639 conditions, 7887 events. 4859/7887 cut-off events. For 850119/850123 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 51806 event pairs, 1799 based on Foata normal form. 44/7930 useless extension candidates. Maximal degree in co-relation 69505. Up to 6938 conditions per place. [2024-06-28 02:51:52,455 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 511 selfloop transitions, 74 changer transitions 0/590 dead transitions. [2024-06-28 02:51:52,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 590 transitions, 8817 flow [2024-06-28 02:51:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 02:51:52,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503171247357294 [2024-06-28 02:51:52,457 INFO L175 Difference]: Start difference. First operand has 307 places, 544 transitions, 7276 flow. Second operand 11 states and 213 transitions. [2024-06-28 02:51:52,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 590 transitions, 8817 flow [2024-06-28 02:51:53,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 590 transitions, 8691 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:53,724 INFO L231 Difference]: Finished difference. Result has 312 places, 547 transitions, 7481 flow [2024-06-28 02:51:53,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7150, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7481, PETRI_PLACES=312, PETRI_TRANSITIONS=547} [2024-06-28 02:51:53,725 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 268 predicate places. [2024-06-28 02:51:53,725 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 547 transitions, 7481 flow [2024-06-28 02:51:53,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:53,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:53,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:53,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:51:53,725 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:53,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash -785574223, now seen corresponding path program 7 times [2024-06-28 02:51:53,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:53,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198912970] [2024-06-28 02:51:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:53,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:54,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:54,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198912970] [2024-06-28 02:51:54,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198912970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:54,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:54,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:54,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855433788] [2024-06-28 02:51:54,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:54,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:54,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:54,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:54,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 547 transitions, 7481 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:54,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:54,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:54,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:56,616 INFO L124 PetriNetUnfolderBase]: 4795/7778 cut-off events. [2024-06-28 02:51:56,617 INFO L125 PetriNetUnfolderBase]: For 783507/783511 co-relation queries the response was YES. [2024-06-28 02:51:56,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66799 conditions, 7778 events. 4795/7778 cut-off events. For 783507/783511 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 50901 event pairs, 1640 based on Foata normal form. 36/7813 useless extension candidates. Maximal degree in co-relation 66663. Up to 6533 conditions per place. [2024-06-28 02:51:56,713 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 507 selfloop transitions, 84 changer transitions 0/596 dead transitions. [2024-06-28 02:51:56,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 596 transitions, 8913 flow [2024-06-28 02:51:56,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-28 02:51:56,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587737843551797 [2024-06-28 02:51:56,715 INFO L175 Difference]: Start difference. First operand has 312 places, 547 transitions, 7481 flow. Second operand 11 states and 217 transitions. [2024-06-28 02:51:56,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 596 transitions, 8913 flow [2024-06-28 02:51:57,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 596 transitions, 8612 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:57,873 INFO L231 Difference]: Finished difference. Result has 314 places, 547 transitions, 7361 flow [2024-06-28 02:51:57,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7180, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7361, PETRI_PLACES=314, PETRI_TRANSITIONS=547} [2024-06-28 02:51:57,874 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 270 predicate places. [2024-06-28 02:51:57,874 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 547 transitions, 7361 flow [2024-06-28 02:51:57,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:57,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:57,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:57,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:51:57,875 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:57,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1697712089, now seen corresponding path program 8 times [2024-06-28 02:51:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:57,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032068258] [2024-06-28 02:51:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:58,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032068258] [2024-06-28 02:51:58,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032068258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:58,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:58,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:58,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057178732] [2024-06-28 02:51:58,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:58,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:58,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:58,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:58,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:58,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:51:58,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 547 transitions, 7361 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:58,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:58,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:51:58,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:01,053 INFO L124 PetriNetUnfolderBase]: 5146/8334 cut-off events. [2024-06-28 02:52:01,053 INFO L125 PetriNetUnfolderBase]: For 754851/754856 co-relation queries the response was YES. [2024-06-28 02:52:01,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68483 conditions, 8334 events. 5146/8334 cut-off events. For 754851/754856 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 55362 event pairs, 1454 based on Foata normal form. 22/8352 useless extension candidates. Maximal degree in co-relation 68346. Up to 6505 conditions per place. [2024-06-28 02:52:01,145 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 365 selfloop transitions, 283 changer transitions 0/653 dead transitions. [2024-06-28 02:52:01,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 653 transitions, 9330 flow [2024-06-28 02:52:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2024-06-28 02:52:01,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799154334038055 [2024-06-28 02:52:01,147 INFO L175 Difference]: Start difference. First operand has 314 places, 547 transitions, 7361 flow. Second operand 11 states and 227 transitions. [2024-06-28 02:52:01,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 653 transitions, 9330 flow [2024-06-28 02:52:02,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 653 transitions, 9101 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:02,178 INFO L231 Difference]: Finished difference. Result has 317 places, 598 transitions, 8185 flow [2024-06-28 02:52:02,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7132, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8185, PETRI_PLACES=317, PETRI_TRANSITIONS=598} [2024-06-28 02:52:02,178 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 273 predicate places. [2024-06-28 02:52:02,178 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 598 transitions, 8185 flow [2024-06-28 02:52:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:02,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:02,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:02,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:52:02,179 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:02,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:02,179 INFO L85 PathProgramCache]: Analyzing trace with hash 151893667, now seen corresponding path program 9 times [2024-06-28 02:52:02,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:02,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388482201] [2024-06-28 02:52:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:03,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:03,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388482201] [2024-06-28 02:52:03,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388482201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:03,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:03,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:03,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794009035] [2024-06-28 02:52:03,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:03,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:03,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:03,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:03,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:03,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 598 transitions, 8185 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:03,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:03,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:03,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:05,319 INFO L124 PetriNetUnfolderBase]: 5221/8458 cut-off events. [2024-06-28 02:52:05,320 INFO L125 PetriNetUnfolderBase]: For 779824/779829 co-relation queries the response was YES. [2024-06-28 02:52:05,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70825 conditions, 8458 events. 5221/8458 cut-off events. For 779824/779829 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 56295 event pairs, 1475 based on Foata normal form. 22/8476 useless extension candidates. Maximal degree in co-relation 70685. Up to 6630 conditions per place. [2024-06-28 02:52:05,433 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 373 selfloop transitions, 277 changer transitions 0/655 dead transitions. [2024-06-28 02:52:05,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 655 transitions, 9897 flow [2024-06-28 02:52:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-28 02:52:05,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48414376321353064 [2024-06-28 02:52:05,435 INFO L175 Difference]: Start difference. First operand has 317 places, 598 transitions, 8185 flow. Second operand 11 states and 229 transitions. [2024-06-28 02:52:05,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 655 transitions, 9897 flow [2024-06-28 02:52:06,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 655 transitions, 9518 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 02:52:06,711 INFO L231 Difference]: Finished difference. Result has 323 places, 599 transitions, 8423 flow [2024-06-28 02:52:06,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7806, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8423, PETRI_PLACES=323, PETRI_TRANSITIONS=599} [2024-06-28 02:52:06,711 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 279 predicate places. [2024-06-28 02:52:06,712 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 599 transitions, 8423 flow [2024-06-28 02:52:06,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:06,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:06,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:06,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:52:06,712 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:06,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash 151889947, now seen corresponding path program 10 times [2024-06-28 02:52:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:06,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294103012] [2024-06-28 02:52:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:06,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:07,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:07,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294103012] [2024-06-28 02:52:07,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294103012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:07,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:07,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:07,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447205582] [2024-06-28 02:52:07,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:07,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:07,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:07,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:07,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:07,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:07,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 599 transitions, 8423 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:07,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:07,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:07,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:09,835 INFO L124 PetriNetUnfolderBase]: 5279/8569 cut-off events. [2024-06-28 02:52:09,835 INFO L125 PetriNetUnfolderBase]: For 794713/794718 co-relation queries the response was YES. [2024-06-28 02:52:09,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71728 conditions, 8569 events. 5279/8569 cut-off events. For 794713/794718 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 57323 event pairs, 1473 based on Foata normal form. 18/8583 useless extension candidates. Maximal degree in co-relation 71587. Up to 6482 conditions per place. [2024-06-28 02:52:09,953 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 373 selfloop transitions, 281 changer transitions 0/659 dead transitions. [2024-06-28 02:52:09,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 659 transitions, 10167 flow [2024-06-28 02:52:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-06-28 02:52:09,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 02:52:09,955 INFO L175 Difference]: Start difference. First operand has 323 places, 599 transitions, 8423 flow. Second operand 11 states and 231 transitions. [2024-06-28 02:52:09,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 659 transitions, 10167 flow [2024-06-28 02:52:11,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 659 transitions, 9623 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:11,553 INFO L231 Difference]: Finished difference. Result has 327 places, 600 transitions, 8506 flow [2024-06-28 02:52:11,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7879, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8506, PETRI_PLACES=327, PETRI_TRANSITIONS=600} [2024-06-28 02:52:11,553 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 283 predicate places. [2024-06-28 02:52:11,553 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 600 transitions, 8506 flow [2024-06-28 02:52:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:11,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:11,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:11,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:52:11,554 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:11,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:11,554 INFO L85 PathProgramCache]: Analyzing trace with hash 157615678, now seen corresponding path program 1 times [2024-06-28 02:52:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922312425] [2024-06-28 02:52:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:11,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:12,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:12,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922312425] [2024-06-28 02:52:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922312425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:12,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:12,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:12,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797240078] [2024-06-28 02:52:12,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:12,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:12,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:12,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:12,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:12,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 600 transitions, 8506 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:12,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:12,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:12,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:14,728 INFO L124 PetriNetUnfolderBase]: 5296/8603 cut-off events. [2024-06-28 02:52:14,728 INFO L125 PetriNetUnfolderBase]: For 790108/790115 co-relation queries the response was YES. [2024-06-28 02:52:14,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72005 conditions, 8603 events. 5296/8603 cut-off events. For 790108/790115 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 57661 event pairs, 1775 based on Foata normal form. 8/8607 useless extension candidates. Maximal degree in co-relation 71863. Up to 7523 conditions per place. [2024-06-28 02:52:14,844 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 494 selfloop transitions, 157 changer transitions 0/656 dead transitions. [2024-06-28 02:52:14,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 656 transitions, 10243 flow [2024-06-28 02:52:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 02:52:14,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608879492600423 [2024-06-28 02:52:14,845 INFO L175 Difference]: Start difference. First operand has 327 places, 600 transitions, 8506 flow. Second operand 11 states and 218 transitions. [2024-06-28 02:52:14,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 656 transitions, 10243 flow [2024-06-28 02:52:16,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 656 transitions, 9632 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:16,325 INFO L231 Difference]: Finished difference. Result has 331 places, 615 transitions, 8495 flow [2024-06-28 02:52:16,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7903, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8495, PETRI_PLACES=331, PETRI_TRANSITIONS=615} [2024-06-28 02:52:16,326 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 287 predicate places. [2024-06-28 02:52:16,326 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 615 transitions, 8495 flow [2024-06-28 02:52:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:16,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:16,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:16,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:52:16,326 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:16,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -5624401, now seen corresponding path program 1 times [2024-06-28 02:52:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:16,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446139478] [2024-06-28 02:52:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:16,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:17,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:17,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446139478] [2024-06-28 02:52:17,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446139478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:17,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:17,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:52:17,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351481731] [2024-06-28 02:52:17,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:17,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:52:17,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:17,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:52:17,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:52:17,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:52:17,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 615 transitions, 8495 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:17,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:17,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:52:17,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:19,103 INFO L124 PetriNetUnfolderBase]: 4769/7955 cut-off events. [2024-06-28 02:52:19,103 INFO L125 PetriNetUnfolderBase]: For 886252/886500 co-relation queries the response was YES. [2024-06-28 02:52:19,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69468 conditions, 7955 events. 4769/7955 cut-off events. For 886252/886500 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 55906 event pairs, 1790 based on Foata normal form. 75/7835 useless extension candidates. Maximal degree in co-relation 69323. Up to 6875 conditions per place. [2024-06-28 02:52:19,207 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 461 selfloop transitions, 56 changer transitions 0/642 dead transitions. [2024-06-28 02:52:19,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 642 transitions, 9699 flow [2024-06-28 02:52:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:52:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:52:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 02:52:19,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2024-06-28 02:52:19,209 INFO L175 Difference]: Start difference. First operand has 331 places, 615 transitions, 8495 flow. Second operand 9 states and 181 transitions. [2024-06-28 02:52:19,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 642 transitions, 9699 flow [2024-06-28 02:52:20,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 642 transitions, 9244 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:20,676 INFO L231 Difference]: Finished difference. Result has 330 places, 618 transitions, 8217 flow [2024-06-28 02:52:20,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8040, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8217, PETRI_PLACES=330, PETRI_TRANSITIONS=618} [2024-06-28 02:52:20,677 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 286 predicate places. [2024-06-28 02:52:20,677 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 618 transitions, 8217 flow [2024-06-28 02:52:20,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:20,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:20,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:20,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:52:20,678 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:20,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:20,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1506504355, now seen corresponding path program 1 times [2024-06-28 02:52:20,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:20,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973139851] [2024-06-28 02:52:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:21,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:21,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973139851] [2024-06-28 02:52:21,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973139851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:21,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:21,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:21,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217699250] [2024-06-28 02:52:21,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:21,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:21,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:21,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:21,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:21,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 618 transitions, 8217 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:21,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:21,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:21,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:24,167 INFO L124 PetriNetUnfolderBase]: 6009/9812 cut-off events. [2024-06-28 02:52:24,168 INFO L125 PetriNetUnfolderBase]: For 998841/998843 co-relation queries the response was YES. [2024-06-28 02:52:24,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83885 conditions, 9812 events. 6009/9812 cut-off events. For 998841/998843 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 67585 event pairs, 1548 based on Foata normal form. 26/9837 useless extension candidates. Maximal degree in co-relation 83742. Up to 7986 conditions per place. [2024-06-28 02:52:24,293 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 589 selfloop transitions, 103 changer transitions 0/697 dead transitions. [2024-06-28 02:52:24,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 697 transitions, 10709 flow [2024-06-28 02:52:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:52:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:52:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-06-28 02:52:24,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-28 02:52:24,294 INFO L175 Difference]: Start difference. First operand has 330 places, 618 transitions, 8217 flow. Second operand 12 states and 238 transitions. [2024-06-28 02:52:24,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 697 transitions, 10709 flow [2024-06-28 02:52:25,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 697 transitions, 10574 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:25,998 INFO L231 Difference]: Finished difference. Result has 338 places, 642 transitions, 8978 flow [2024-06-28 02:52:25,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8082, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8978, PETRI_PLACES=338, PETRI_TRANSITIONS=642} [2024-06-28 02:52:25,999 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 294 predicate places. [2024-06-28 02:52:25,999 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 642 transitions, 8978 flow [2024-06-28 02:52:25,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:26,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:26,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:26,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:52:26,000 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:26,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:26,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1148503411, now seen corresponding path program 11 times [2024-06-28 02:52:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:26,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241149320] [2024-06-28 02:52:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:26,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:26,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:26,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241149320] [2024-06-28 02:52:26,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241149320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:26,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:26,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:26,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759789711] [2024-06-28 02:52:26,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:26,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:26,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:26,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:27,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:27,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 642 transitions, 8978 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:27,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:27,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:27,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:29,569 INFO L124 PetriNetUnfolderBase]: 6143/10048 cut-off events. [2024-06-28 02:52:29,570 INFO L125 PetriNetUnfolderBase]: For 1068924/1068926 co-relation queries the response was YES. [2024-06-28 02:52:29,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87312 conditions, 10048 events. 6143/10048 cut-off events. For 1068924/1068926 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 69501 event pairs, 1669 based on Foata normal form. 34/10081 useless extension candidates. Maximal degree in co-relation 87166. Up to 8452 conditions per place. [2024-06-28 02:52:29,705 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 601 selfloop transitions, 88 changer transitions 0/694 dead transitions. [2024-06-28 02:52:29,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 694 transitions, 11040 flow [2024-06-28 02:52:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 02:52:29,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 02:52:29,706 INFO L175 Difference]: Start difference. First operand has 338 places, 642 transitions, 8978 flow. Second operand 11 states and 219 transitions. [2024-06-28 02:52:29,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 694 transitions, 11040 flow [2024-06-28 02:52:31,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 694 transitions, 10929 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 02:52:31,429 INFO L231 Difference]: Finished difference. Result has 344 places, 645 transitions, 9226 flow [2024-06-28 02:52:31,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8867, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9226, PETRI_PLACES=344, PETRI_TRANSITIONS=645} [2024-06-28 02:52:31,429 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 300 predicate places. [2024-06-28 02:52:31,430 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 645 transitions, 9226 flow [2024-06-28 02:52:31,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:31,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:31,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:31,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:52:31,430 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:31,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:31,430 INFO L85 PathProgramCache]: Analyzing trace with hash -832490051, now seen corresponding path program 12 times [2024-06-28 02:52:31,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:31,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791107954] [2024-06-28 02:52:31,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:31,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:32,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:32,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791107954] [2024-06-28 02:52:32,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791107954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:32,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:32,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695590661] [2024-06-28 02:52:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:32,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:32,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:32,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:32,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:32,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 645 transitions, 9226 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:32,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:32,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:32,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:34,782 INFO L124 PetriNetUnfolderBase]: 6061/9937 cut-off events. [2024-06-28 02:52:34,782 INFO L125 PetriNetUnfolderBase]: For 1004714/1004716 co-relation queries the response was YES. [2024-06-28 02:52:34,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83468 conditions, 9937 events. 6061/9937 cut-off events. For 1004714/1004716 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 68932 event pairs, 1753 based on Foata normal form. 42/9978 useless extension candidates. Maximal degree in co-relation 83320. Up to 8777 conditions per place. [2024-06-28 02:52:34,920 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 604 selfloop transitions, 77 changer transitions 0/686 dead transitions. [2024-06-28 02:52:34,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 686 transitions, 10789 flow [2024-06-28 02:52:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 02:52:34,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503171247357294 [2024-06-28 02:52:34,922 INFO L175 Difference]: Start difference. First operand has 344 places, 645 transitions, 9226 flow. Second operand 11 states and 213 transitions. [2024-06-28 02:52:34,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 686 transitions, 10789 flow [2024-06-28 02:52:36,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 686 transitions, 10421 flow, removed 90 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:36,672 INFO L231 Difference]: Finished difference. Result has 345 places, 645 transitions, 9029 flow [2024-06-28 02:52:36,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9029, PETRI_PLACES=345, PETRI_TRANSITIONS=645} [2024-06-28 02:52:36,673 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 301 predicate places. [2024-06-28 02:52:36,673 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 645 transitions, 9029 flow [2024-06-28 02:52:36,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:36,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:36,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:36,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:52:36,673 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:36,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1553431077, now seen corresponding path program 13 times [2024-06-28 02:52:36,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:36,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427590278] [2024-06-28 02:52:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:36,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:37,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:37,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427590278] [2024-06-28 02:52:37,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427590278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:37,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:37,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541235382] [2024-06-28 02:52:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:37,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:37,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:37,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 645 transitions, 9029 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:37,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:37,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:37,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:40,409 INFO L124 PetriNetUnfolderBase]: 6613/10863 cut-off events. [2024-06-28 02:52:40,410 INFO L125 PetriNetUnfolderBase]: For 949964/949969 co-relation queries the response was YES. [2024-06-28 02:52:40,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86740 conditions, 10863 events. 6613/10863 cut-off events. For 949964/949969 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 76838 event pairs, 1647 based on Foata normal form. 22/10881 useless extension candidates. Maximal degree in co-relation 86591. Up to 8401 conditions per place. [2024-06-28 02:52:40,560 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 424 selfloop transitions, 354 changer transitions 0/783 dead transitions. [2024-06-28 02:52:40,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 783 transitions, 11664 flow [2024-06-28 02:52:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-28 02:52:40,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48625792811839325 [2024-06-28 02:52:40,562 INFO L175 Difference]: Start difference. First operand has 345 places, 645 transitions, 9029 flow. Second operand 11 states and 230 transitions. [2024-06-28 02:52:40,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 783 transitions, 11664 flow [2024-06-28 02:52:42,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 783 transitions, 11463 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:52:42,532 INFO L231 Difference]: Finished difference. Result has 347 places, 723 transitions, 10373 flow [2024-06-28 02:52:42,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8828, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10373, PETRI_PLACES=347, PETRI_TRANSITIONS=723} [2024-06-28 02:52:42,533 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 303 predicate places. [2024-06-28 02:52:42,533 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 723 transitions, 10373 flow [2024-06-28 02:52:42,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:42,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:42,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:42,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:52:42,534 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:42,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:42,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1553578947, now seen corresponding path program 14 times [2024-06-28 02:52:42,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:42,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670765858] [2024-06-28 02:52:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:42,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:43,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:43,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670765858] [2024-06-28 02:52:43,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670765858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:43,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:43,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:43,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795334160] [2024-06-28 02:52:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:43,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:43,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:43,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:43,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:43,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:43,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 723 transitions, 10373 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:43,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:43,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:43,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:46,328 INFO L124 PetriNetUnfolderBase]: 6869/11284 cut-off events. [2024-06-28 02:52:46,328 INFO L125 PetriNetUnfolderBase]: For 1032431/1032436 co-relation queries the response was YES. [2024-06-28 02:52:46,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93360 conditions, 11284 events. 6869/11284 cut-off events. For 1032431/1032436 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 80408 event pairs, 1655 based on Foata normal form. 18/11298 useless extension candidates. Maximal degree in co-relation 93208. Up to 8403 conditions per place. [2024-06-28 02:52:46,483 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 428 selfloop transitions, 359 changer transitions 0/792 dead transitions. [2024-06-28 02:52:46,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 792 transitions, 12817 flow [2024-06-28 02:52:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:46,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 234 transitions. [2024-06-28 02:52:46,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49471458773784355 [2024-06-28 02:52:46,485 INFO L175 Difference]: Start difference. First operand has 347 places, 723 transitions, 10373 flow. Second operand 11 states and 234 transitions. [2024-06-28 02:52:46,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 792 transitions, 12817 flow [2024-06-28 02:52:48,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 792 transitions, 12417 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 02:52:48,518 INFO L231 Difference]: Finished difference. Result has 355 places, 727 transitions, 10886 flow [2024-06-28 02:52:48,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9973, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=356, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10886, PETRI_PLACES=355, PETRI_TRANSITIONS=727} [2024-06-28 02:52:48,519 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 311 predicate places. [2024-06-28 02:52:48,519 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 727 transitions, 10886 flow [2024-06-28 02:52:48,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:48,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:48,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:48,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:52:48,520 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:48,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1548068697, now seen corresponding path program 15 times [2024-06-28 02:52:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:48,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303658156] [2024-06-28 02:52:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:49,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303658156] [2024-06-28 02:52:49,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303658156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:49,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:49,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:49,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162111575] [2024-06-28 02:52:49,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:49,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:49,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:49,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:49,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:49,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:49,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 727 transitions, 10886 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:49,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:49,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:49,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:52,462 INFO L124 PetriNetUnfolderBase]: 6833/11234 cut-off events. [2024-06-28 02:52:52,462 INFO L125 PetriNetUnfolderBase]: For 1016604/1016609 co-relation queries the response was YES. [2024-06-28 02:52:52,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91720 conditions, 11234 events. 6833/11234 cut-off events. For 1016604/1016609 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 80148 event pairs, 1692 based on Foata normal form. 22/11252 useless extension candidates. Maximal degree in co-relation 91567. Up to 8765 conditions per place. [2024-06-28 02:52:52,641 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 423 selfloop transitions, 358 changer transitions 0/786 dead transitions. [2024-06-28 02:52:52,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 786 transitions, 12851 flow [2024-06-28 02:52:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-28 02:52:52,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820295983086681 [2024-06-28 02:52:52,642 INFO L175 Difference]: Start difference. First operand has 355 places, 727 transitions, 10886 flow. Second operand 11 states and 228 transitions. [2024-06-28 02:52:52,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 786 transitions, 12851 flow [2024-06-28 02:52:54,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 786 transitions, 12373 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:54,784 INFO L231 Difference]: Finished difference. Result has 359 places, 727 transitions, 11136 flow [2024-06-28 02:52:54,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10408, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11136, PETRI_PLACES=359, PETRI_TRANSITIONS=727} [2024-06-28 02:52:54,785 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 315 predicate places. [2024-06-28 02:52:54,785 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 727 transitions, 11136 flow [2024-06-28 02:52:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:54,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:54,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:54,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:52:54,792 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:54,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:54,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1547853216, now seen corresponding path program 2 times [2024-06-28 02:52:54,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:54,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443392025] [2024-06-28 02:52:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:55,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:55,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443392025] [2024-06-28 02:52:55,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443392025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:55,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:55,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:55,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072528010] [2024-06-28 02:52:55,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:55,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:55,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:55,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:55,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:52:55,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 727 transitions, 11136 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:55,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:55,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:52:55,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:58,614 INFO L124 PetriNetUnfolderBase]: 6861/11318 cut-off events. [2024-06-28 02:52:58,615 INFO L125 PetriNetUnfolderBase]: For 985145/985152 co-relation queries the response was YES. [2024-06-28 02:52:58,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92888 conditions, 11318 events. 6861/11318 cut-off events. For 985145/985152 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 81236 event pairs, 2188 based on Foata normal form. 8/11322 useless extension candidates. Maximal degree in co-relation 92733. Up to 9889 conditions per place. [2024-06-28 02:52:58,792 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 593 selfloop transitions, 189 changer transitions 0/787 dead transitions. [2024-06-28 02:52:58,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 787 transitions, 13140 flow [2024-06-28 02:52:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 02:52:58,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608879492600423 [2024-06-28 02:52:58,793 INFO L175 Difference]: Start difference. First operand has 359 places, 727 transitions, 11136 flow. Second operand 11 states and 218 transitions. [2024-06-28 02:52:58,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 787 transitions, 13140 flow [2024-06-28 02:53:01,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 787 transitions, 12429 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:01,341 INFO L231 Difference]: Finished difference. Result has 362 places, 744 transitions, 11044 flow [2024-06-28 02:53:01,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10429, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11044, PETRI_PLACES=362, PETRI_TRANSITIONS=744} [2024-06-28 02:53:01,342 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 318 predicate places. [2024-06-28 02:53:01,342 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 744 transitions, 11044 flow [2024-06-28 02:53:01,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:01,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:01,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:01,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:53:01,342 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:01,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:01,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2106777849, now seen corresponding path program 16 times [2024-06-28 02:53:01,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:01,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714474848] [2024-06-28 02:53:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:01,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:02,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714474848] [2024-06-28 02:53:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714474848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:02,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:02,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:02,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353330409] [2024-06-28 02:53:02,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:02,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:02,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:02,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:02,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:02,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:02,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 744 transitions, 11044 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:02,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:02,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:02,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:05,184 INFO L124 PetriNetUnfolderBase]: 7006/11519 cut-off events. [2024-06-28 02:53:05,184 INFO L125 PetriNetUnfolderBase]: For 1056951/1056954 co-relation queries the response was YES. [2024-06-28 02:53:05,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95068 conditions, 11519 events. 7006/11519 cut-off events. For 1056951/1056954 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 82486 event pairs, 1640 based on Foata normal form. 20/11535 useless extension candidates. Maximal degree in co-relation 94911. Up to 9055 conditions per place. [2024-06-28 02:53:05,354 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 429 selfloop transitions, 375 changer transitions 0/809 dead transitions. [2024-06-28 02:53:05,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 809 transitions, 13204 flow [2024-06-28 02:53:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2024-06-28 02:53:05,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47780126849894294 [2024-06-28 02:53:05,355 INFO L175 Difference]: Start difference. First operand has 362 places, 744 transitions, 11044 flow. Second operand 11 states and 226 transitions. [2024-06-28 02:53:05,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 809 transitions, 13204 flow [2024-06-28 02:53:08,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 809 transitions, 12810 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 02:53:08,017 INFO L231 Difference]: Finished difference. Result has 367 places, 759 transitions, 11636 flow [2024-06-28 02:53:08,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10656, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11636, PETRI_PLACES=367, PETRI_TRANSITIONS=759} [2024-06-28 02:53:08,017 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 323 predicate places. [2024-06-28 02:53:08,017 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 759 transitions, 11636 flow [2024-06-28 02:53:08,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:08,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:08,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:08,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:53:08,018 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:08,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash 331263313, now seen corresponding path program 17 times [2024-06-28 02:53:08,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:08,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734518332] [2024-06-28 02:53:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:08,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:08,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:08,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734518332] [2024-06-28 02:53:08,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734518332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:08,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:08,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:08,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069215558] [2024-06-28 02:53:08,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:08,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:08,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:08,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:08,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:09,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:09,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 759 transitions, 11636 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:09,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:09,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:09,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:12,351 INFO L124 PetriNetUnfolderBase]: 7081/11642 cut-off events. [2024-06-28 02:53:12,351 INFO L125 PetriNetUnfolderBase]: For 1095626/1095629 co-relation queries the response was YES. [2024-06-28 02:53:12,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97183 conditions, 11642 events. 7081/11642 cut-off events. For 1095626/1095629 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 83701 event pairs, 1653 based on Foata normal form. 20/11658 useless extension candidates. Maximal degree in co-relation 97025. Up to 9180 conditions per place. [2024-06-28 02:53:12,518 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 451 selfloop transitions, 359 changer transitions 0/815 dead transitions. [2024-06-28 02:53:12,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 815 transitions, 13744 flow [2024-06-28 02:53:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:12,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-06-28 02:53:12,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48414376321353064 [2024-06-28 02:53:12,519 INFO L175 Difference]: Start difference. First operand has 367 places, 759 transitions, 11636 flow. Second operand 11 states and 229 transitions. [2024-06-28 02:53:12,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 815 transitions, 13744 flow [2024-06-28 02:53:14,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 815 transitions, 13212 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:53:14,881 INFO L231 Difference]: Finished difference. Result has 374 places, 761 transitions, 11929 flow [2024-06-28 02:53:14,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11104, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11929, PETRI_PLACES=374, PETRI_TRANSITIONS=761} [2024-06-28 02:53:14,884 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 330 predicate places. [2024-06-28 02:53:14,884 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 761 transitions, 11929 flow [2024-06-28 02:53:14,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:14,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:14,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:14,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:53:14,885 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:14,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1029594859, now seen corresponding path program 18 times [2024-06-28 02:53:14,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:14,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138658860] [2024-06-28 02:53:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:14,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:15,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:15,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138658860] [2024-06-28 02:53:15,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138658860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:15,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:15,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:15,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948622879] [2024-06-28 02:53:15,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:15,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:15,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:15,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:15,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:15,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 761 transitions, 11929 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:15,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:15,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:15,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:18,904 INFO L124 PetriNetUnfolderBase]: 7156/11777 cut-off events. [2024-06-28 02:53:18,905 INFO L125 PetriNetUnfolderBase]: For 1128135/1128138 co-relation queries the response was YES. [2024-06-28 02:53:19,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98473 conditions, 11777 events. 7156/11777 cut-off events. For 1128135/1128138 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 85032 event pairs, 1669 based on Foata normal form. 20/11793 useless extension candidates. Maximal degree in co-relation 98313. Up to 9305 conditions per place. [2024-06-28 02:53:19,103 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 448 selfloop transitions, 361 changer transitions 0/814 dead transitions. [2024-06-28 02:53:19,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 814 transitions, 13990 flow [2024-06-28 02:53:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-28 02:53:19,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820295983086681 [2024-06-28 02:53:19,104 INFO L175 Difference]: Start difference. First operand has 374 places, 761 transitions, 11929 flow. Second operand 11 states and 228 transitions. [2024-06-28 02:53:19,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 814 transitions, 13990 flow [2024-06-28 02:53:21,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 814 transitions, 13149 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 02:53:21,554 INFO L231 Difference]: Finished difference. Result has 377 places, 762 transitions, 11891 flow [2024-06-28 02:53:21,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11088, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11891, PETRI_PLACES=377, PETRI_TRANSITIONS=762} [2024-06-28 02:53:21,555 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 333 predicate places. [2024-06-28 02:53:21,555 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 762 transitions, 11891 flow [2024-06-28 02:53:21,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:21,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:21,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:21,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:53:21,556 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:21,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1029598579, now seen corresponding path program 19 times [2024-06-28 02:53:21,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:21,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146037965] [2024-06-28 02:53:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:21,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:22,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:22,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146037965] [2024-06-28 02:53:22,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146037965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:22,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:22,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:22,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448596202] [2024-06-28 02:53:22,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:22,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:22,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:22,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:22,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:22,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 762 transitions, 11891 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:22,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:22,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:22,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:25,732 INFO L124 PetriNetUnfolderBase]: 7214/11875 cut-off events. [2024-06-28 02:53:25,732 INFO L125 PetriNetUnfolderBase]: For 1139364/1139367 co-relation queries the response was YES. [2024-06-28 02:53:25,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99240 conditions, 11875 events. 7214/11875 cut-off events. For 1139364/1139367 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 85938 event pairs, 1655 based on Foata normal form. 16/11887 useless extension candidates. Maximal degree in co-relation 99079. Up to 9032 conditions per place. [2024-06-28 02:53:25,927 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 449 selfloop transitions, 364 changer transitions 0/818 dead transitions. [2024-06-28 02:53:25,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 818 transitions, 13983 flow [2024-06-28 02:53:25,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-28 02:53:25,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48625792811839325 [2024-06-28 02:53:25,929 INFO L175 Difference]: Start difference. First operand has 377 places, 762 transitions, 11891 flow. Second operand 11 states and 230 transitions. [2024-06-28 02:53:25,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 818 transitions, 13983 flow [2024-06-28 02:53:28,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 818 transitions, 13241 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:53:28,552 INFO L231 Difference]: Finished difference. Result has 381 places, 763 transitions, 11957 flow [2024-06-28 02:53:28,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11149, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11957, PETRI_PLACES=381, PETRI_TRANSITIONS=763} [2024-06-28 02:53:28,552 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 337 predicate places. [2024-06-28 02:53:28,552 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 763 transitions, 11957 flow [2024-06-28 02:53:28,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:28,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:28,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:28,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:53:28,553 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:28,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash -277038578, now seen corresponding path program 1 times [2024-06-28 02:53:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:28,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927556659] [2024-06-28 02:53:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:28,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:29,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:29,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927556659] [2024-06-28 02:53:29,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927556659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:29,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:29,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:29,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823448378] [2024-06-28 02:53:29,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:29,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:29,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:29,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 763 transitions, 11957 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:29,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:29,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:29,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:32,607 INFO L124 PetriNetUnfolderBase]: 7219/11925 cut-off events. [2024-06-28 02:53:32,608 INFO L125 PetriNetUnfolderBase]: For 1111455/1111460 co-relation queries the response was YES. [2024-06-28 02:53:32,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99278 conditions, 11925 events. 7219/11925 cut-off events. For 1111455/1111460 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 87021 event pairs, 2776 based on Foata normal form. 5/11928 useless extension candidates. Maximal degree in co-relation 99116. Up to 11078 conditions per place. [2024-06-28 02:53:33,047 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 748 selfloop transitions, 34 changer transitions 0/787 dead transitions. [2024-06-28 02:53:33,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 787 transitions, 13709 flow [2024-06-28 02:53:33,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:33,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 02:53:33,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-28 02:53:33,048 INFO L175 Difference]: Start difference. First operand has 381 places, 763 transitions, 11957 flow. Second operand 8 states and 151 transitions. [2024-06-28 02:53:33,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 787 transitions, 13709 flow [2024-06-28 02:53:35,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 787 transitions, 12923 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:35,512 INFO L231 Difference]: Finished difference. Result has 380 places, 766 transitions, 11329 flow [2024-06-28 02:53:35,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11171, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11329, PETRI_PLACES=380, PETRI_TRANSITIONS=766} [2024-06-28 02:53:35,513 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 336 predicate places. [2024-06-28 02:53:35,513 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 766 transitions, 11329 flow [2024-06-28 02:53:35,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:35,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:35,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:35,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:53:35,513 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:35,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:35,514 INFO L85 PathProgramCache]: Analyzing trace with hash -708007358, now seen corresponding path program 3 times [2024-06-28 02:53:35,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:35,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43789865] [2024-06-28 02:53:35,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:35,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:36,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:36,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43789865] [2024-06-28 02:53:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43789865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:36,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:36,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342144016] [2024-06-28 02:53:36,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:36,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:36,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:36,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:36,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:36,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 766 transitions, 11329 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:36,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:36,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:36,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:40,239 INFO L124 PetriNetUnfolderBase]: 7236/11979 cut-off events. [2024-06-28 02:53:40,239 INFO L125 PetriNetUnfolderBase]: For 1125963/1125970 co-relation queries the response was YES. [2024-06-28 02:53:40,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98205 conditions, 11979 events. 7236/11979 cut-off events. For 1125963/1125970 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 87506 event pairs, 2216 based on Foata normal form. 8/11983 useless extension candidates. Maximal degree in co-relation 98042. Up to 10492 conditions per place. [2024-06-28 02:53:40,550 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 625 selfloop transitions, 187 changer transitions 0/817 dead transitions. [2024-06-28 02:53:40,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 817 transitions, 13373 flow [2024-06-28 02:53:40,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 02:53:40,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 02:53:40,551 INFO L175 Difference]: Start difference. First operand has 380 places, 766 transitions, 11329 flow. Second operand 11 states and 219 transitions. [2024-06-28 02:53:40,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 817 transitions, 13373 flow [2024-06-28 02:53:43,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 817 transitions, 13263 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 02:53:43,322 INFO L231 Difference]: Finished difference. Result has 388 places, 773 transitions, 11763 flow [2024-06-28 02:53:43,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11219, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11763, PETRI_PLACES=388, PETRI_TRANSITIONS=773} [2024-06-28 02:53:43,323 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 344 predicate places. [2024-06-28 02:53:43,323 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 773 transitions, 11763 flow [2024-06-28 02:53:43,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:43,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:43,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:43,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:53:43,324 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:43,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:43,326 INFO L85 PathProgramCache]: Analyzing trace with hash -506918108, now seen corresponding path program 4 times [2024-06-28 02:53:43,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:43,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988335411] [2024-06-28 02:53:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:44,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:44,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988335411] [2024-06-28 02:53:44,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988335411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:44,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:44,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:44,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996248438] [2024-06-28 02:53:44,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:44,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:44,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:44,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:44,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:44,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 773 transitions, 11763 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:44,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:44,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:44,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:48,046 INFO L124 PetriNetUnfolderBase]: 7271/12014 cut-off events. [2024-06-28 02:53:48,046 INFO L125 PetriNetUnfolderBase]: For 1159562/1159569 co-relation queries the response was YES. [2024-06-28 02:53:48,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100467 conditions, 12014 events. 7271/12014 cut-off events. For 1159562/1159569 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 87596 event pairs, 2190 based on Foata normal form. 8/12018 useless extension candidates. Maximal degree in co-relation 100302. Up to 10539 conditions per place. [2024-06-28 02:53:48,241 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 619 selfloop transitions, 205 changer transitions 0/829 dead transitions. [2024-06-28 02:53:48,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 829 transitions, 13947 flow [2024-06-28 02:53:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-28 02:53:48,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587737843551797 [2024-06-28 02:53:48,242 INFO L175 Difference]: Start difference. First operand has 388 places, 773 transitions, 11763 flow. Second operand 11 states and 217 transitions. [2024-06-28 02:53:48,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 829 transitions, 13947 flow [2024-06-28 02:53:50,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 829 transitions, 13456 flow, removed 46 selfloop flow, removed 11 redundant places. [2024-06-28 02:53:50,986 INFO L231 Difference]: Finished difference. Result has 389 places, 786 transitions, 11988 flow [2024-06-28 02:53:50,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11312, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11988, PETRI_PLACES=389, PETRI_TRANSITIONS=786} [2024-06-28 02:53:50,986 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 345 predicate places. [2024-06-28 02:53:50,986 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 786 transitions, 11988 flow [2024-06-28 02:53:50,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:50,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:50,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:50,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:53:50,987 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:50,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:50,987 INFO L85 PathProgramCache]: Analyzing trace with hash 525418204, now seen corresponding path program 5 times [2024-06-28 02:53:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:50,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580514326] [2024-06-28 02:53:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:52,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:52,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580514326] [2024-06-28 02:53:52,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580514326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:52,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:52,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424029053] [2024-06-28 02:53:52,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:52,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:52,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:52,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:53:52,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 786 transitions, 11988 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:52,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:52,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:53:52,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:55,913 INFO L124 PetriNetUnfolderBase]: 7288/12066 cut-off events. [2024-06-28 02:53:55,913 INFO L125 PetriNetUnfolderBase]: For 1188802/1188809 co-relation queries the response was YES. [2024-06-28 02:53:56,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101793 conditions, 12066 events. 7288/12066 cut-off events. For 1188802/1188809 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 88341 event pairs, 2224 based on Foata normal form. 8/12070 useless extension candidates. Maximal degree in co-relation 101629. Up to 10566 conditions per place. [2024-06-28 02:53:56,249 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 624 selfloop transitions, 201 changer transitions 0/830 dead transitions. [2024-06-28 02:53:56,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 830 transitions, 13988 flow [2024-06-28 02:53:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:56,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 02:53:56,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608879492600423 [2024-06-28 02:53:56,251 INFO L175 Difference]: Start difference. First operand has 389 places, 786 transitions, 11988 flow. Second operand 11 states and 218 transitions. [2024-06-28 02:53:56,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 830 transitions, 13988 flow [2024-06-28 02:53:59,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 830 transitions, 13550 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-28 02:53:59,270 INFO L231 Difference]: Finished difference. Result has 394 places, 788 transitions, 12068 flow [2024-06-28 02:53:59,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11562, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12068, PETRI_PLACES=394, PETRI_TRANSITIONS=788} [2024-06-28 02:53:59,270 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 350 predicate places. [2024-06-28 02:53:59,271 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 788 transitions, 12068 flow [2024-06-28 02:53:59,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:59,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:59,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:59,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:53:59,271 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:59,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash 532836814, now seen corresponding path program 6 times [2024-06-28 02:53:59,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:59,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566447498] [2024-06-28 02:53:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:00,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:00,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566447498] [2024-06-28 02:54:00,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566447498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:00,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:00,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:54:00,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386842464] [2024-06-28 02:54:00,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:00,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:54:00,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:00,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:54:00,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:54:00,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:54:00,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 788 transitions, 12068 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:00,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:00,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:54:00,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:03,667 INFO L124 PetriNetUnfolderBase]: 7305/12082 cut-off events. [2024-06-28 02:54:03,667 INFO L125 PetriNetUnfolderBase]: For 1208660/1208667 co-relation queries the response was YES. [2024-06-28 02:54:03,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100075 conditions, 12082 events. 7305/12082 cut-off events. For 1208660/1208667 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 88363 event pairs, 2191 based on Foata normal form. 8/12086 useless extension candidates. Maximal degree in co-relation 99910. Up to 10461 conditions per place. [2024-06-28 02:54:03,839 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 611 selfloop transitions, 218 changer transitions 0/834 dead transitions. [2024-06-28 02:54:03,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 834 transitions, 14094 flow [2024-06-28 02:54:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 02:54:03,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608879492600423 [2024-06-28 02:54:03,840 INFO L175 Difference]: Start difference. First operand has 394 places, 788 transitions, 12068 flow. Second operand 11 states and 218 transitions. [2024-06-28 02:54:03,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 834 transitions, 14094 flow [2024-06-28 02:54:06,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 834 transitions, 13562 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:06,731 INFO L231 Difference]: Finished difference. Result has 395 places, 790 transitions, 12079 flow [2024-06-28 02:54:06,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11536, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12079, PETRI_PLACES=395, PETRI_TRANSITIONS=790} [2024-06-28 02:54:06,732 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 351 predicate places. [2024-06-28 02:54:06,732 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 790 transitions, 12079 flow [2024-06-28 02:54:06,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:06,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:06,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:06,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:54:06,732 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:06,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash -114924156, now seen corresponding path program 2 times [2024-06-28 02:54:06,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:06,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834215122] [2024-06-28 02:54:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:06,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:07,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:07,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834215122] [2024-06-28 02:54:07,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834215122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:07,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:07,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:54:07,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495851004] [2024-06-28 02:54:07,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:07,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:54:07,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:54:07,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:54:07,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 02:54:07,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 790 transitions, 12079 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:07,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:07,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 02:54:07,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:10,934 INFO L124 PetriNetUnfolderBase]: 7318/12073 cut-off events. [2024-06-28 02:54:10,935 INFO L125 PetriNetUnfolderBase]: For 1224464/1224469 co-relation queries the response was YES. [2024-06-28 02:54:11,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100650 conditions, 12073 events. 7318/12073 cut-off events. For 1224464/1224469 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 88033 event pairs, 2743 based on Foata normal form. 5/12076 useless extension candidates. Maximal degree in co-relation 100485. Up to 11218 conditions per place. [2024-06-28 02:54:11,122 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 768 selfloop transitions, 42 changer transitions 0/815 dead transitions. [2024-06-28 02:54:11,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 815 transitions, 14135 flow [2024-06-28 02:54:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:54:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:54:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 02:54:11,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-28 02:54:11,123 INFO L175 Difference]: Start difference. First operand has 395 places, 790 transitions, 12079 flow. Second operand 8 states and 150 transitions. [2024-06-28 02:54:11,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 815 transitions, 14135 flow [2024-06-28 02:54:14,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 815 transitions, 13610 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:14,168 INFO L231 Difference]: Finished difference. Result has 394 places, 796 transitions, 11818 flow [2024-06-28 02:54:14,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11554, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11818, PETRI_PLACES=394, PETRI_TRANSITIONS=796} [2024-06-28 02:54:14,168 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 350 predicate places. [2024-06-28 02:54:14,169 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 796 transitions, 11818 flow [2024-06-28 02:54:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:14,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:14,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:14,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:54:14,169 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:14,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1483604133, now seen corresponding path program 2 times [2024-06-28 02:54:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:14,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888393655] [2024-06-28 02:54:14,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:14,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:15,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:15,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888393655] [2024-06-28 02:54:15,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888393655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:15,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:15,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:54:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297910946] [2024-06-28 02:54:15,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:15,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:54:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:54:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:54:15,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 02:54:15,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 796 transitions, 11818 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:15,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:15,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 02:54:15,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand