./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.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/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:55:31,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:55:31,229 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:55:31,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:55:31,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:55:31,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:55:31,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:55:31,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:55:31,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:55:31,259 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:55:31,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:55:31,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:55:31,261 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:55:31,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:55:31,262 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:55:31,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:55:31,262 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:55:31,262 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:55:31,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:55:31,263 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:55:31,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:55:31,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:55:31,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:55:31,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:55:31,264 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:55:31,264 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:55:31,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:55:31,264 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:55:31,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:55:31,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:55:31,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:55:31,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:55:31,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:55:31,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:55:31,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:55:31,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:55:31,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:55:31,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:55:31,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:55:31,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:55:31,267 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:55:31,267 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:55:31,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:55:31,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:55:31,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:55:31,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:55:31,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:55:31,552 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:55:31,552 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:55:31,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 01:55:31,741 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:55:31,742 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:55:31,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i [2024-06-28 01:55:32,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:55:32,874 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:55:32,874 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i [2024-06-28 01:55:32,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3115953b/67cfa66bda464f92b75a252fddeb4f81/FLAGa1036ac05 [2024-06-28 01:55:32,895 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3115953b/67cfa66bda464f92b75a252fddeb4f81 [2024-06-28 01:55:32,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:55:32,896 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:55:32,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:55:32,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:55:32,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:55:32,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:55:31" (1/2) ... [2024-06-28 01:55:32,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378275dc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:55:32, skipping insertion in model container [2024-06-28 01:55:32,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:55:31" (1/2) ... [2024-06-28 01:55:32,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e01f295 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:55:32, skipping insertion in model container [2024-06-28 01:55:32,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:55:32" (2/2) ... [2024-06-28 01:55:32,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@378275dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:32, skipping insertion in model container [2024-06-28 01:55:32,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:55:32" (2/2) ... [2024-06-28 01:55:32,906 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:55:33,006 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:55:33,007 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$w_buff0_used == (_Bool)0)) && (! multithreaded || z$w_buff1_used == (_Bool)0)) && (! multithreaded || z$w_buff0 == 0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && z$w_buff0 == 0) && z$w_buff0_used == (_Bool)0) && z$w_buff1 == 0) && z$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0) [2024-06-28 01:55:33,007 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] (((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$w_buff0_used == (_Bool)0)) && (! multithreaded || z$w_buff1_used == (_Bool)0)) && (! multithreaded || z$w_buff0 == 0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && z$w_buff0 == 0) && z$w_buff0_used == (_Bool)0) && z$w_buff1 == 0) && z$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0) [2024-06-28 01:55:33,007 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$w_buff0_used == (_Bool)0)) && (! multithreaded || z$w_buff1_used == (_Bool)0)) && (! multithreaded || z$w_buff0 == 0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && z$w_buff0 == 0) && z$w_buff0_used == (_Bool)0) && z$w_buff1 == 0) && z$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0) [2024-06-28 01:55:33,007 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:55:33,008 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-28 01:55:33,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:55:33,164 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i[1026,1039] [2024-06-28 01:55:33,293 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:55:33,301 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:55:33,329 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i[1026,1039] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:55:33,438 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:55:33,469 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:55:33,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33 WrapperNode [2024-06-28 01:55:33,470 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:55:33,471 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:55:33,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:55:33,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:55:33,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,541 INFO L138 Inliner]: procedures = 175, calls = 79, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 207 [2024-06-28 01:55:33,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:55:33,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:55:33,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:55:33,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:55:33,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,568 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,665 INFO L175 MemorySlicer]: Split 39 memory accesses to 2 slices as follows [2, 37]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 01:55:33,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:55:33,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:55:33,704 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:55:33,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:55:33,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (1/1) ... [2024-06-28 01:55:33,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:55:33,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:55:33,733 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 01:55:33,760 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 01:55:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:55:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:55:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:55:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:55:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:55:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:55:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:55:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:55:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:55:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:55:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:55:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:55:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:55:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:55:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:55:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:55:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:55:33,770 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 01:55:33,902 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:55:33,903 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:55:34,330 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:55:34,331 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:55:34,619 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:55:34,619 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:55:34,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:55:34 BoogieIcfgContainer [2024-06-28 01:55:34,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:55:34,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:55:34,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:55:34,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:55:34,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:55:31" (1/4) ... [2024-06-28 01:55:34,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2b27e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:55:34, skipping insertion in model container [2024-06-28 01:55:34,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:55:32" (2/4) ... [2024-06-28 01:55:34,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2b27e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:55:34, skipping insertion in model container [2024-06-28 01:55:34,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:33" (3/4) ... [2024-06-28 01:55:34,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2b27e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:55:34, skipping insertion in model container [2024-06-28 01:55:34,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:55:34" (4/4) ... [2024-06-28 01:55:34,627 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i [2024-06-28 01:55:34,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:55:34,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:55:34,643 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:55:34,698 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:55:34,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:55:34,786 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:55:34,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:55:34,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:55:34,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:55:34,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-28 01:55:34,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:55:34,815 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;@fcfb5b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:55:34,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:55:34,822 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:55:34,822 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:55:34,822 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:55:34,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:34,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:55:34,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:34,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash 629752520, now seen corresponding path program 1 times [2024-06-28 01:55:34,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:34,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042856648] [2024-06-28 01:55:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:34,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:36,601 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 01:55:36,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042856648] [2024-06-28 01:55:36,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042856648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:36,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:36,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:55:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002256075] [2024-06-28 01:55:36,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:36,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:55:36,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:36,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:55:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:55:36,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:55:36,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 01:55:36,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:36,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:55:36,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:37,268 INFO L124 PetriNetUnfolderBase]: 2185/3482 cut-off events. [2024-06-28 01:55:37,269 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-06-28 01:55:37,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6747 conditions, 3482 events. 2185/3482 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19822 event pairs, 1368 based on Foata normal form. 0/3348 useless extension candidates. Maximal degree in co-relation 6735. Up to 3194 conditions per place. [2024-06-28 01:55:37,287 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 43 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:55:37,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 227 flow [2024-06-28 01:55:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:55:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:55:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-28 01:55:37,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-06-28 01:55:37,297 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 93 transitions. [2024-06-28 01:55:37,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 227 flow [2024-06-28 01:55:37,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:37,301 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-28 01:55:37,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 01:55:37,305 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-28 01:55:37,305 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-28 01:55:37,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 01:55:37,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:37,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:37,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:55:37,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:37,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash -398190777, now seen corresponding path program 1 times [2024-06-28 01:55:37,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:37,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003253467] [2024-06-28 01:55:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:39,293 INFO 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 01:55:39,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:39,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003253467] [2024-06-28 01:55:39,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003253467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:39,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:39,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:55:39,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823332160] [2024-06-28 01:55:39,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:39,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:55:39,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:39,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:55:39,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:55:39,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:55:39,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 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 01:55:39,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:39,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:55:39,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:40,005 INFO L124 PetriNetUnfolderBase]: 2179/3321 cut-off events. [2024-06-28 01:55:40,005 INFO L125 PetriNetUnfolderBase]: For 586/594 co-relation queries the response was YES. [2024-06-28 01:55:40,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7453 conditions, 3321 events. 2179/3321 cut-off events. For 586/594 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17904 event pairs, 984 based on Foata normal form. 7/3323 useless extension candidates. Maximal degree in co-relation 7441. Up to 3152 conditions per place. [2024-06-28 01:55:40,022 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-06-28 01:55:40,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 355 flow [2024-06-28 01:55:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:55:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:55:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-28 01:55:40,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-06-28 01:55:40,025 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 126 transitions. [2024-06-28 01:55:40,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 355 flow [2024-06-28 01:55:40,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:55:40,035 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 188 flow [2024-06-28 01:55:40,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-28 01:55:40,038 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-28 01:55:40,038 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 188 flow [2024-06-28 01:55:40,038 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 01:55:40,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:40,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:40,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:55:40,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:40,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:40,044 INFO L85 PathProgramCache]: Analyzing trace with hash 540988682, now seen corresponding path program 1 times [2024-06-28 01:55:40,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:40,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361799708] [2024-06-28 01:55:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:40,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:42,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:42,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361799708] [2024-06-28 01:55:42,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361799708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:42,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:42,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:55:42,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880507407] [2024-06-28 01:55:42,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:42,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:55:42,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:42,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:55:42,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:55:42,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:55:42,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 01:55:42,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:42,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:55:42,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:43,043 INFO L124 PetriNetUnfolderBase]: 2768/4163 cut-off events. [2024-06-28 01:55:43,043 INFO L125 PetriNetUnfolderBase]: For 2224/2234 co-relation queries the response was YES. [2024-06-28 01:55:43,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10467 conditions, 4163 events. 2768/4163 cut-off events. For 2224/2234 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22333 event pairs, 944 based on Foata normal form. 9/4168 useless extension candidates. Maximal degree in co-relation 10452. Up to 3953 conditions per place. [2024-06-28 01:55:43,102 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 86 selfloop transitions, 12 changer transitions 0/107 dead transitions. [2024-06-28 01:55:43,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 107 transitions, 548 flow [2024-06-28 01:55:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:55:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:55:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-06-28 01:55:43,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6553191489361702 [2024-06-28 01:55:43,104 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 188 flow. Second operand 5 states and 154 transitions. [2024-06-28 01:55:43,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 107 transitions, 548 flow [2024-06-28 01:55:43,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 107 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:55:43,108 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 307 flow [2024-06-28 01:55:43,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-28 01:55:43,109 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-06-28 01:55:43,109 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 307 flow [2024-06-28 01:55:43,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 01:55:43,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:43,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:43,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:55:43,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:43,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:43,110 INFO L85 PathProgramCache]: Analyzing trace with hash 199109801, now seen corresponding path program 1 times [2024-06-28 01:55:43,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:43,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410106355] [2024-06-28 01:55:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:43,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:45,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:45,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410106355] [2024-06-28 01:55:45,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410106355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:45,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:45,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:55:45,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352498106] [2024-06-28 01:55:45,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:45,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:55:45,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:45,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:55:45,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:55:45,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:55:45,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:45,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:45,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:55:45,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:46,609 INFO L124 PetriNetUnfolderBase]: 2759/4148 cut-off events. [2024-06-28 01:55:46,609 INFO L125 PetriNetUnfolderBase]: For 3466/3496 co-relation queries the response was YES. [2024-06-28 01:55:46,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11436 conditions, 4148 events. 2759/4148 cut-off events. For 3466/3496 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22308 event pairs, 627 based on Foata normal form. 21/4165 useless extension candidates. Maximal degree in co-relation 11416. Up to 3876 conditions per place. [2024-06-28 01:55:46,634 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 97 selfloop transitions, 14 changer transitions 0/120 dead transitions. [2024-06-28 01:55:46,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 120 transitions, 669 flow [2024-06-28 01:55:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:55:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:55:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-28 01:55:46,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-28 01:55:46,636 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 307 flow. Second operand 6 states and 180 transitions. [2024-06-28 01:55:46,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 120 transitions, 669 flow [2024-06-28 01:55:46,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 120 transitions, 667 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 01:55:46,647 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 348 flow [2024-06-28 01:55:46,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-28 01:55:46,649 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-06-28 01:55:46,649 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 348 flow [2024-06-28 01:55:46,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:46,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:46,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:46,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:55:46,650 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:46,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:46,650 INFO L85 PathProgramCache]: Analyzing trace with hash -973172079, now seen corresponding path program 1 times [2024-06-28 01:55:46,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:46,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112870039] [2024-06-28 01:55:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:46,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:48,472 INFO 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 01:55:48,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:48,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112870039] [2024-06-28 01:55:48,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112870039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:48,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:48,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:55:48,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686433977] [2024-06-28 01:55:48,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:48,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:55:48,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:48,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:55:48,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:55:48,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:55:48,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:48,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:48,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:55:48,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:49,557 INFO L124 PetriNetUnfolderBase]: 3294/5136 cut-off events. [2024-06-28 01:55:49,557 INFO L125 PetriNetUnfolderBase]: For 5850/5850 co-relation queries the response was YES. [2024-06-28 01:55:49,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14429 conditions, 5136 events. 3294/5136 cut-off events. For 5850/5850 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 29264 event pairs, 1296 based on Foata normal form. 2/5134 useless extension candidates. Maximal degree in co-relation 14405. Up to 4715 conditions per place. [2024-06-28 01:55:49,582 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 77 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-06-28 01:55:49,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 632 flow [2024-06-28 01:55:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:55:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:55:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:55:49,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-28 01:55:49,584 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 348 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:55:49,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 632 flow [2024-06-28 01:55:49,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 597 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:55:49,590 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 419 flow [2024-06-28 01:55:49,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-06-28 01:55:49,591 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2024-06-28 01:55:49,591 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 419 flow [2024-06-28 01:55:49,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:49,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:49,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:49,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:55:49,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:49,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:49,593 INFO L85 PathProgramCache]: Analyzing trace with hash 907061142, now seen corresponding path program 1 times [2024-06-28 01:55:49,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:49,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789689643] [2024-06-28 01:55:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:49,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:52,364 INFO 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 01:55:52,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:52,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789689643] [2024-06-28 01:55:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789689643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:52,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142694729] [2024-06-28 01:55:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:52,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:52,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:52,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:55:52,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 419 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:52,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:52,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:55:52,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:54,040 INFO L124 PetriNetUnfolderBase]: 3201/4834 cut-off events. [2024-06-28 01:55:54,040 INFO L125 PetriNetUnfolderBase]: For 8554/8672 co-relation queries the response was YES. [2024-06-28 01:55:54,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15258 conditions, 4834 events. 3201/4834 cut-off events. For 8554/8672 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 26806 event pairs, 864 based on Foata normal form. 32/4843 useless extension candidates. Maximal degree in co-relation 15231. Up to 4391 conditions per place. [2024-06-28 01:55:54,063 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 96 selfloop transitions, 29 changer transitions 0/135 dead transitions. [2024-06-28 01:55:54,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 135 transitions, 869 flow [2024-06-28 01:55:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:54,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:55:54,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805471124620061 [2024-06-28 01:55:54,065 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 419 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:55:54,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 135 transitions, 869 flow [2024-06-28 01:55:54,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 135 transitions, 861 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:55:54,075 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 523 flow [2024-06-28 01:55:54,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=523, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-28 01:55:54,078 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-06-28 01:55:54,078 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 523 flow [2024-06-28 01:55:54,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:54,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:54,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:54,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:55:54,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:54,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:54,079 INFO L85 PathProgramCache]: Analyzing trace with hash 907181298, now seen corresponding path program 1 times [2024-06-28 01:55:54,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:54,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975726407] [2024-06-28 01:55:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:54,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:56,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:56,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975726407] [2024-06-28 01:55:56,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975726407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:56,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:56,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:56,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90356399] [2024-06-28 01:55:56,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:56,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:56,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:56,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:55:56,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 523 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:56,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:56,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:55:56,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:58,437 INFO L124 PetriNetUnfolderBase]: 3410/5091 cut-off events. [2024-06-28 01:55:58,437 INFO L125 PetriNetUnfolderBase]: For 10599/10599 co-relation queries the response was YES. [2024-06-28 01:55:58,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16848 conditions, 5091 events. 3410/5091 cut-off events. For 10599/10599 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27661 event pairs, 962 based on Foata normal form. 2/5087 useless extension candidates. Maximal degree in co-relation 16818. Up to 4728 conditions per place. [2024-06-28 01:55:58,465 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 119 selfloop transitions, 25 changer transitions 0/151 dead transitions. [2024-06-28 01:55:58,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 151 transitions, 1101 flow [2024-06-28 01:55:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:58,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:55:58,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:55:58,467 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 523 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:55:58,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 151 transitions, 1101 flow [2024-06-28 01:55:58,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 151 transitions, 1027 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:55:58,481 INFO L231 Difference]: Finished difference. Result has 81 places, 95 transitions, 672 flow [2024-06-28 01:55:58,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=672, PETRI_PLACES=81, PETRI_TRANSITIONS=95} [2024-06-28 01:55:58,481 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 30 predicate places. [2024-06-28 01:55:58,482 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 95 transitions, 672 flow [2024-06-28 01:55:58,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:58,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:58,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:58,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:55:58,482 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:58,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1136377308, now seen corresponding path program 2 times [2024-06-28 01:55:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:58,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221828700] [2024-06-28 01:55:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:01,510 INFO 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 01:56:01,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:01,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221828700] [2024-06-28 01:56:01,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221828700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:01,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:01,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:56:01,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881886152] [2024-06-28 01:56:01,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:01,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:56:01,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:01,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:56:01,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:56:01,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:56:01,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 95 transitions, 672 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:01,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:01,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:56:01,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:02,957 INFO L124 PetriNetUnfolderBase]: 3170/4839 cut-off events. [2024-06-28 01:56:02,957 INFO L125 PetriNetUnfolderBase]: For 12976/13149 co-relation queries the response was YES. [2024-06-28 01:56:02,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17002 conditions, 4839 events. 3170/4839 cut-off events. For 12976/13149 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27408 event pairs, 797 based on Foata normal form. 18/4758 useless extension candidates. Maximal degree in co-relation 16968. Up to 4362 conditions per place. [2024-06-28 01:56:02,987 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 104 selfloop transitions, 34 changer transitions 0/152 dead transitions. [2024-06-28 01:56:02,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 152 transitions, 1123 flow [2024-06-28 01:56:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:02,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:56:02,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2024-06-28 01:56:02,989 INFO L175 Difference]: Start difference. First operand has 81 places, 95 transitions, 672 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:56:02,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 152 transitions, 1123 flow [2024-06-28 01:56:03,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 152 transitions, 1109 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:56:03,003 INFO L231 Difference]: Finished difference. Result has 87 places, 101 transitions, 790 flow [2024-06-28 01:56:03,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=790, PETRI_PLACES=87, PETRI_TRANSITIONS=101} [2024-06-28 01:56:03,004 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-06-28 01:56:03,004 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 101 transitions, 790 flow [2024-06-28 01:56:03,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:03,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:03,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:03,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:56:03,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:03,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:03,005 INFO L85 PathProgramCache]: Analyzing trace with hash -247104210, now seen corresponding path program 2 times [2024-06-28 01:56:03,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:03,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155093149] [2024-06-28 01:56:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:03,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:05,666 INFO 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 01:56:05,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:05,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155093149] [2024-06-28 01:56:05,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155093149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:05,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:05,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:56:05,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114326872] [2024-06-28 01:56:05,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:05,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:56:05,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:56:05,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:56:05,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:05,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 101 transitions, 790 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:05,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:05,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:05,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:06,928 INFO L124 PetriNetUnfolderBase]: 3518/5264 cut-off events. [2024-06-28 01:56:06,928 INFO L125 PetriNetUnfolderBase]: For 14911/14935 co-relation queries the response was YES. [2024-06-28 01:56:06,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18702 conditions, 5264 events. 3518/5264 cut-off events. For 14911/14935 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 28768 event pairs, 984 based on Foata normal form. 19/5275 useless extension candidates. Maximal degree in co-relation 18665. Up to 4865 conditions per place. [2024-06-28 01:56:06,957 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 113 selfloop transitions, 28 changer transitions 0/148 dead transitions. [2024-06-28 01:56:06,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 148 transitions, 1258 flow [2024-06-28 01:56:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:56:06,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-28 01:56:06,959 INFO L175 Difference]: Start difference. First operand has 87 places, 101 transitions, 790 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:56:06,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 148 transitions, 1258 flow [2024-06-28 01:56:06,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 148 transitions, 1181 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:06,974 INFO L231 Difference]: Finished difference. Result has 90 places, 108 transitions, 845 flow [2024-06-28 01:56:06,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=845, PETRI_PLACES=90, PETRI_TRANSITIONS=108} [2024-06-28 01:56:06,975 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 39 predicate places. [2024-06-28 01:56:06,975 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 108 transitions, 845 flow [2024-06-28 01:56:06,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:06,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:06,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:06,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:56:06,979 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:06,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:06,980 INFO L85 PathProgramCache]: Analyzing trace with hash -247341546, now seen corresponding path program 3 times [2024-06-28 01:56:06,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:06,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502031619] [2024-06-28 01:56:06,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:06,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:09,549 INFO 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 01:56:09,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502031619] [2024-06-28 01:56:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502031619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:09,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:09,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:56:09,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781405553] [2024-06-28 01:56:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:09,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:56:09,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:09,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:56:09,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:56:09,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:56:09,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 108 transitions, 845 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:09,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:09,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:56:09,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:11,236 INFO L124 PetriNetUnfolderBase]: 3216/4905 cut-off events. [2024-06-28 01:56:11,236 INFO L125 PetriNetUnfolderBase]: For 15943/16127 co-relation queries the response was YES. [2024-06-28 01:56:11,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17833 conditions, 4905 events. 3216/4905 cut-off events. For 15943/16127 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27757 event pairs, 789 based on Foata normal form. 27/4835 useless extension candidates. Maximal degree in co-relation 17794. Up to 4375 conditions per place. [2024-06-28 01:56:11,259 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 116 selfloop transitions, 38 changer transitions 0/171 dead transitions. [2024-06-28 01:56:11,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 171 transitions, 1350 flow [2024-06-28 01:56:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 01:56:11,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-28 01:56:11,261 INFO L175 Difference]: Start difference. First operand has 90 places, 108 transitions, 845 flow. Second operand 9 states and 220 transitions. [2024-06-28 01:56:11,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 171 transitions, 1350 flow [2024-06-28 01:56:11,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 171 transitions, 1320 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:56:11,277 INFO L231 Difference]: Finished difference. Result has 98 places, 110 transitions, 922 flow [2024-06-28 01:56:11,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=98, PETRI_TRANSITIONS=110} [2024-06-28 01:56:11,278 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2024-06-28 01:56:11,278 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions, 922 flow [2024-06-28 01:56:11,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:11,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:11,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:11,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:56:11,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:11,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:11,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1084312818, now seen corresponding path program 3 times [2024-06-28 01:56:11,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:11,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663545999] [2024-06-28 01:56:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:11,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:13,771 INFO 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 01:56:13,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:13,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663545999] [2024-06-28 01:56:13,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663545999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:13,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:13,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:56:13,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176586034] [2024-06-28 01:56:13,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:13,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:56:13,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:13,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:56:13,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:56:13,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:13,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions, 922 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:13,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:13,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:13,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:15,094 INFO L124 PetriNetUnfolderBase]: 3505/5237 cut-off events. [2024-06-28 01:56:15,094 INFO L125 PetriNetUnfolderBase]: For 17267/17267 co-relation queries the response was YES. [2024-06-28 01:56:15,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19131 conditions, 5237 events. 3505/5237 cut-off events. For 17267/17267 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 28464 event pairs, 961 based on Foata normal form. 2/5233 useless extension candidates. Maximal degree in co-relation 19089. Up to 4849 conditions per place. [2024-06-28 01:56:15,123 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 112 selfloop transitions, 31 changer transitions 0/150 dead transitions. [2024-06-28 01:56:15,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 150 transitions, 1314 flow [2024-06-28 01:56:15,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 01:56:15,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549645390070922 [2024-06-28 01:56:15,125 INFO L175 Difference]: Start difference. First operand has 98 places, 110 transitions, 922 flow. Second operand 6 states and 155 transitions. [2024-06-28 01:56:15,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 150 transitions, 1314 flow [2024-06-28 01:56:15,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 150 transitions, 1198 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:56:15,151 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 881 flow [2024-06-28 01:56:15,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=881, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-06-28 01:56:15,151 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 46 predicate places. [2024-06-28 01:56:15,152 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 881 flow [2024-06-28 01:56:15,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:15,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:15,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:15,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:56:15,152 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:15,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:15,153 INFO L85 PathProgramCache]: Analyzing trace with hash -247095282, now seen corresponding path program 1 times [2024-06-28 01:56:15,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:15,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334024602] [2024-06-28 01:56:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:15,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:17,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:17,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334024602] [2024-06-28 01:56:17,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334024602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:17,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:17,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:56:17,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756005206] [2024-06-28 01:56:17,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:17,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:56:17,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:17,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:56:17,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:56:17,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:17,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 881 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:17,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:17,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:17,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:18,371 INFO L124 PetriNetUnfolderBase]: 3497/5460 cut-off events. [2024-06-28 01:56:18,371 INFO L125 PetriNetUnfolderBase]: For 18499/18502 co-relation queries the response was YES. [2024-06-28 01:56:18,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19155 conditions, 5460 events. 3497/5460 cut-off events. For 18499/18502 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 31296 event pairs, 1137 based on Foata normal form. 6/5462 useless extension candidates. Maximal degree in co-relation 19113. Up to 4955 conditions per place. [2024-06-28 01:56:18,401 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 125 selfloop transitions, 14 changer transitions 0/146 dead transitions. [2024-06-28 01:56:18,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 146 transitions, 1260 flow [2024-06-28 01:56:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:56:18,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-28 01:56:18,402 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 881 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:56:18,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 146 transitions, 1260 flow [2024-06-28 01:56:18,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 146 transitions, 1215 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:18,424 INFO L231 Difference]: Finished difference. Result has 99 places, 113 transitions, 898 flow [2024-06-28 01:56:18,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=898, PETRI_PLACES=99, PETRI_TRANSITIONS=113} [2024-06-28 01:56:18,424 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-28 01:56:18,424 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 113 transitions, 898 flow [2024-06-28 01:56:18,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:18,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:18,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:18,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:56:18,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:18,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:18,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1945873943, now seen corresponding path program 1 times [2024-06-28 01:56:18,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:18,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795912374] [2024-06-28 01:56:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:18,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:21,591 INFO 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 01:56:21,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:21,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795912374] [2024-06-28 01:56:21,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795912374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:21,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:21,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:21,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287262674] [2024-06-28 01:56:21,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:21,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:21,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:21,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:21,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 113 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:21,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:21,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:21,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:23,490 INFO L124 PetriNetUnfolderBase]: 3528/5278 cut-off events. [2024-06-28 01:56:23,490 INFO L125 PetriNetUnfolderBase]: For 19641/19641 co-relation queries the response was YES. [2024-06-28 01:56:23,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19531 conditions, 5278 events. 3528/5278 cut-off events. For 19641/19641 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 28743 event pairs, 879 based on Foata normal form. 2/5274 useless extension candidates. Maximal degree in co-relation 19489. Up to 4684 conditions per place. [2024-06-28 01:56:23,515 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 147 selfloop transitions, 42 changer transitions 0/196 dead transitions. [2024-06-28 01:56:23,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 196 transitions, 1598 flow [2024-06-28 01:56:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:56:23,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-06-28 01:56:23,516 INFO L175 Difference]: Start difference. First operand has 99 places, 113 transitions, 898 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:56:23,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 196 transitions, 1598 flow [2024-06-28 01:56:23,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 196 transitions, 1560 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:23,534 INFO L231 Difference]: Finished difference. Result has 105 places, 126 transitions, 1067 flow [2024-06-28 01:56:23,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1067, PETRI_PLACES=105, PETRI_TRANSITIONS=126} [2024-06-28 01:56:23,535 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2024-06-28 01:56:23,535 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 126 transitions, 1067 flow [2024-06-28 01:56:23,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:23,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:23,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:23,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:56:23,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:23,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1942149293, now seen corresponding path program 2 times [2024-06-28 01:56:23,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:23,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751748254] [2024-06-28 01:56:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:23,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:26,786 INFO 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 01:56:26,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:26,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751748254] [2024-06-28 01:56:26,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751748254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:26,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:26,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:26,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794675449] [2024-06-28 01:56:26,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:26,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:26,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:26,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:26,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 126 transitions, 1067 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:26,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:26,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:26,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:28,648 INFO L124 PetriNetUnfolderBase]: 3595/5393 cut-off events. [2024-06-28 01:56:28,648 INFO L125 PetriNetUnfolderBase]: For 23536/23536 co-relation queries the response was YES. [2024-06-28 01:56:28,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21254 conditions, 5393 events. 3595/5393 cut-off events. For 23536/23536 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29546 event pairs, 875 based on Foata normal form. 2/5389 useless extension candidates. Maximal degree in co-relation 21209. Up to 4902 conditions per place. [2024-06-28 01:56:28,685 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 173 selfloop transitions, 40 changer transitions 0/220 dead transitions. [2024-06-28 01:56:28,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 220 transitions, 1844 flow [2024-06-28 01:56:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:56:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:56:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 01:56:28,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468085106382978 [2024-06-28 01:56:28,688 INFO L175 Difference]: Start difference. First operand has 105 places, 126 transitions, 1067 flow. Second operand 10 states and 257 transitions. [2024-06-28 01:56:28,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 220 transitions, 1844 flow [2024-06-28 01:56:28,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 220 transitions, 1784 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:56:28,720 INFO L231 Difference]: Finished difference. Result has 113 places, 134 transitions, 1177 flow [2024-06-28 01:56:28,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1177, PETRI_PLACES=113, PETRI_TRANSITIONS=134} [2024-06-28 01:56:28,721 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 62 predicate places. [2024-06-28 01:56:28,721 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 134 transitions, 1177 flow [2024-06-28 01:56:28,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:28,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:28,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:28,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:56:28,722 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:28,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1942154873, now seen corresponding path program 3 times [2024-06-28 01:56:28,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:28,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874377926] [2024-06-28 01:56:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:28,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:31,557 INFO 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 01:56:31,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:31,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874377926] [2024-06-28 01:56:31,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874377926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:31,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:31,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:31,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801236469] [2024-06-28 01:56:31,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:31,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:31,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:31,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:31,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:31,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 134 transitions, 1177 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:31,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:31,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:31,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:33,080 INFO L124 PetriNetUnfolderBase]: 3590/5386 cut-off events. [2024-06-28 01:56:33,081 INFO L125 PetriNetUnfolderBase]: For 25234/25234 co-relation queries the response was YES. [2024-06-28 01:56:33,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21644 conditions, 5386 events. 3590/5386 cut-off events. For 25234/25234 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29523 event pairs, 875 based on Foata normal form. 2/5382 useless extension candidates. Maximal degree in co-relation 21596. Up to 4897 conditions per place. [2024-06-28 01:56:33,113 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 150 selfloop transitions, 39 changer transitions 0/196 dead transitions. [2024-06-28 01:56:33,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 196 transitions, 1724 flow [2024-06-28 01:56:33,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:56:33,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550531914893617 [2024-06-28 01:56:33,115 INFO L175 Difference]: Start difference. First operand has 113 places, 134 transitions, 1177 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:56:33,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 196 transitions, 1724 flow [2024-06-28 01:56:33,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 196 transitions, 1676 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:33,145 INFO L231 Difference]: Finished difference. Result has 116 places, 134 transitions, 1215 flow [2024-06-28 01:56:33,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1215, PETRI_PLACES=116, PETRI_TRANSITIONS=134} [2024-06-28 01:56:33,146 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 65 predicate places. [2024-06-28 01:56:33,146 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 134 transitions, 1215 flow [2024-06-28 01:56:33,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:33,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:33,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:33,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:56:33,147 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:33,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash -319803741, now seen corresponding path program 4 times [2024-06-28 01:56:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:33,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509209319] [2024-06-28 01:56:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:36,123 INFO 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 01:56:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509209319] [2024-06-28 01:56:36,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509209319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:36,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:36,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:36,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796424229] [2024-06-28 01:56:36,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:36,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:36,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:36,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:36,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 134 transitions, 1215 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:36,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:36,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:36,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:37,995 INFO L124 PetriNetUnfolderBase]: 3621/5443 cut-off events. [2024-06-28 01:56:37,995 INFO L125 PetriNetUnfolderBase]: For 27571/27571 co-relation queries the response was YES. [2024-06-28 01:56:38,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22298 conditions, 5443 events. 3621/5443 cut-off events. For 27571/27571 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29931 event pairs, 879 based on Foata normal form. 2/5439 useless extension candidates. Maximal degree in co-relation 22248. Up to 4826 conditions per place. [2024-06-28 01:56:38,032 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 140 selfloop transitions, 48 changer transitions 0/195 dead transitions. [2024-06-28 01:56:38,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 195 transitions, 1838 flow [2024-06-28 01:56:38,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 01:56:38,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 01:56:38,033 INFO L175 Difference]: Start difference. First operand has 116 places, 134 transitions, 1215 flow. Second operand 7 states and 188 transitions. [2024-06-28 01:56:38,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 195 transitions, 1838 flow [2024-06-28 01:56:38,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 195 transitions, 1760 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:56:38,069 INFO L231 Difference]: Finished difference. Result has 117 places, 138 transitions, 1303 flow [2024-06-28 01:56:38,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1303, PETRI_PLACES=117, PETRI_TRANSITIONS=138} [2024-06-28 01:56:38,070 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 66 predicate places. [2024-06-28 01:56:38,070 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 138 transitions, 1303 flow [2024-06-28 01:56:38,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:38,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:38,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:38,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:56:38,071 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:38,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:38,071 INFO L85 PathProgramCache]: Analyzing trace with hash 929705623, now seen corresponding path program 5 times [2024-06-28 01:56:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:38,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414282328] [2024-06-28 01:56:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:38,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:40,974 INFO 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 01:56:40,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:40,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414282328] [2024-06-28 01:56:40,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414282328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:40,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:40,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:40,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746690298] [2024-06-28 01:56:40,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:40,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:40,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:40,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:41,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:41,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 138 transitions, 1303 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:41,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:41,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:41,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:42,935 INFO L124 PetriNetUnfolderBase]: 3652/5507 cut-off events. [2024-06-28 01:56:42,935 INFO L125 PetriNetUnfolderBase]: For 31789/31820 co-relation queries the response was YES. [2024-06-28 01:56:42,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23125 conditions, 5507 events. 3652/5507 cut-off events. For 31789/31820 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30528 event pairs, 897 based on Foata normal form. 24/5523 useless extension candidates. Maximal degree in co-relation 23073. Up to 4858 conditions per place. [2024-06-28 01:56:42,968 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 159 selfloop transitions, 52 changer transitions 0/218 dead transitions. [2024-06-28 01:56:42,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 218 transitions, 2045 flow [2024-06-28 01:56:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:56:42,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-28 01:56:42,970 INFO L175 Difference]: Start difference. First operand has 117 places, 138 transitions, 1303 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:56:42,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 218 transitions, 2045 flow [2024-06-28 01:56:43,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 218 transitions, 1929 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:56:43,009 INFO L231 Difference]: Finished difference. Result has 120 places, 142 transitions, 1353 flow [2024-06-28 01:56:43,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1353, PETRI_PLACES=120, PETRI_TRANSITIONS=142} [2024-06-28 01:56:43,009 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 69 predicate places. [2024-06-28 01:56:43,009 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 142 transitions, 1353 flow [2024-06-28 01:56:43,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:43,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:43,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:43,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:56:43,010 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:43,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1116293383, now seen corresponding path program 6 times [2024-06-28 01:56:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:43,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944274977] [2024-06-28 01:56:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:45,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:45,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944274977] [2024-06-28 01:56:45,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944274977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:45,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:45,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:45,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403254983] [2024-06-28 01:56:45,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:45,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:45,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:45,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:45,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:45,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:45,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 142 transitions, 1353 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:45,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:45,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:45,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:47,876 INFO L124 PetriNetUnfolderBase]: 3647/5491 cut-off events. [2024-06-28 01:56:47,877 INFO L125 PetriNetUnfolderBase]: For 30074/30074 co-relation queries the response was YES. [2024-06-28 01:56:47,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23048 conditions, 5491 events. 3647/5491 cut-off events. For 30074/30074 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30267 event pairs, 875 based on Foata normal form. 2/5487 useless extension candidates. Maximal degree in co-relation 22996. Up to 4853 conditions per place. [2024-06-28 01:56:47,911 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 158 selfloop transitions, 54 changer transitions 0/219 dead transitions. [2024-06-28 01:56:47,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 219 transitions, 1988 flow [2024-06-28 01:56:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:56:47,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.557919621749409 [2024-06-28 01:56:47,913 INFO L175 Difference]: Start difference. First operand has 120 places, 142 transitions, 1353 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:56:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 219 transitions, 1988 flow [2024-06-28 01:56:47,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 219 transitions, 1902 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:47,956 INFO L231 Difference]: Finished difference. Result has 124 places, 142 transitions, 1387 flow [2024-06-28 01:56:48,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1387, PETRI_PLACES=124, PETRI_TRANSITIONS=142} [2024-06-28 01:56:48,016 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 73 predicate places. [2024-06-28 01:56:48,016 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 142 transitions, 1387 flow [2024-06-28 01:56:48,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:48,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:48,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:48,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:56:48,017 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:48,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:48,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1018802009, now seen corresponding path program 1 times [2024-06-28 01:56:48,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:48,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093363013] [2024-06-28 01:56:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:48,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:51,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093363013] [2024-06-28 01:56:51,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093363013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:51,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:51,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:51,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656526026] [2024-06-28 01:56:51,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:51,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:51,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:51,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:51,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:51,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:56:51,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 142 transitions, 1387 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:51,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:51,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:56:51,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:53,018 INFO L124 PetriNetUnfolderBase]: 3526/5397 cut-off events. [2024-06-28 01:56:53,019 INFO L125 PetriNetUnfolderBase]: For 35939/36007 co-relation queries the response was YES. [2024-06-28 01:56:53,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23089 conditions, 5397 events. 3526/5397 cut-off events. For 35939/36007 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30795 event pairs, 436 based on Foata normal form. 22/5284 useless extension candidates. Maximal degree in co-relation 23036. Up to 4396 conditions per place. [2024-06-28 01:56:53,056 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 132 selfloop transitions, 56 changer transitions 0/215 dead transitions. [2024-06-28 01:56:53,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 215 transitions, 2042 flow [2024-06-28 01:56:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 01:56:53,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-06-28 01:56:53,057 INFO L175 Difference]: Start difference. First operand has 124 places, 142 transitions, 1387 flow. Second operand 8 states and 218 transitions. [2024-06-28 01:56:53,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 215 transitions, 2042 flow [2024-06-28 01:56:53,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 215 transitions, 1890 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 01:56:53,106 INFO L231 Difference]: Finished difference. Result has 122 places, 146 transitions, 1394 flow [2024-06-28 01:56:53,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1394, PETRI_PLACES=122, PETRI_TRANSITIONS=146} [2024-06-28 01:56:53,107 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 71 predicate places. [2024-06-28 01:56:53,107 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 146 transitions, 1394 flow [2024-06-28 01:56:53,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:53,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:53,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:53,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:56:53,107 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:53,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash 754547211, now seen corresponding path program 2 times [2024-06-28 01:56:53,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:53,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068857899] [2024-06-28 01:56:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:53,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:56,365 INFO 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 01:56:56,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:56,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068857899] [2024-06-28 01:56:56,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068857899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:56,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:56,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:56,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845185322] [2024-06-28 01:56:56,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:56,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:56,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:56:56,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 146 transitions, 1394 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:56,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:56,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:56:56,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:58,093 INFO L124 PetriNetUnfolderBase]: 3579/5488 cut-off events. [2024-06-28 01:56:58,093 INFO L125 PetriNetUnfolderBase]: For 38016/38109 co-relation queries the response was YES. [2024-06-28 01:56:58,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23790 conditions, 5488 events. 3579/5488 cut-off events. For 38016/38109 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 31589 event pairs, 681 based on Foata normal form. 14/5357 useless extension candidates. Maximal degree in co-relation 23737. Up to 4663 conditions per place. [2024-06-28 01:56:58,131 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 133 selfloop transitions, 54 changer transitions 0/214 dead transitions. [2024-06-28 01:56:58,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 214 transitions, 1965 flow [2024-06-28 01:56:58,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 01:56:58,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-06-28 01:56:58,133 INFO L175 Difference]: Start difference. First operand has 122 places, 146 transitions, 1394 flow. Second operand 8 states and 215 transitions. [2024-06-28 01:56:58,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 214 transitions, 1965 flow [2024-06-28 01:56:58,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 214 transitions, 1883 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:58,184 INFO L231 Difference]: Finished difference. Result has 126 places, 148 transitions, 1452 flow [2024-06-28 01:56:58,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1452, PETRI_PLACES=126, PETRI_TRANSITIONS=148} [2024-06-28 01:56:58,185 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 75 predicate places. [2024-06-28 01:56:58,185 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 148 transitions, 1452 flow [2024-06-28 01:56:58,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:58,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:58,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:58,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:56:58,185 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:58,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:58,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1136950139, now seen corresponding path program 3 times [2024-06-28 01:56:58,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:58,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090865899] [2024-06-28 01:56:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:58,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:02,395 INFO 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 01:57:02,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:02,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090865899] [2024-06-28 01:57:02,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090865899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:02,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:02,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117404529] [2024-06-28 01:57:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:02,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:02,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:02,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:02,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:57:02,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 148 transitions, 1452 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:02,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:02,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:57:02,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:04,190 INFO L124 PetriNetUnfolderBase]: 3629/5570 cut-off events. [2024-06-28 01:57:04,190 INFO L125 PetriNetUnfolderBase]: For 40799/40888 co-relation queries the response was YES. [2024-06-28 01:57:04,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24545 conditions, 5570 events. 3629/5570 cut-off events. For 40799/40888 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32108 event pairs, 678 based on Foata normal form. 14/5433 useless extension candidates. Maximal degree in co-relation 24490. Up to 4848 conditions per place. [2024-06-28 01:57:04,225 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 144 selfloop transitions, 41 changer transitions 0/212 dead transitions. [2024-06-28 01:57:04,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 212 transitions, 2007 flow [2024-06-28 01:57:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:57:04,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-06-28 01:57:04,227 INFO L175 Difference]: Start difference. First operand has 126 places, 148 transitions, 1452 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:57:04,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 212 transitions, 2007 flow [2024-06-28 01:57:04,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 212 transitions, 1899 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:57:04,274 INFO L231 Difference]: Finished difference. Result has 128 places, 150 transitions, 1458 flow [2024-06-28 01:57:04,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1458, PETRI_PLACES=128, PETRI_TRANSITIONS=150} [2024-06-28 01:57:04,274 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 77 predicate places. [2024-06-28 01:57:04,274 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 150 transitions, 1458 flow [2024-06-28 01:57:04,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:04,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:04,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:04,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:57:04,275 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:04,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:04,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1137134837, now seen corresponding path program 1 times [2024-06-28 01:57:04,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:04,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136931855] [2024-06-28 01:57:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:04,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136931855] [2024-06-28 01:57:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136931855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:07,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:07,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:07,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121063701] [2024-06-28 01:57:07,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:07,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:07,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:07,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:57:07,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 150 transitions, 1458 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:07,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:07,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:57:07,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:08,834 INFO L124 PetriNetUnfolderBase]: 3961/5947 cut-off events. [2024-06-28 01:57:08,834 INFO L125 PetriNetUnfolderBase]: For 39793/39793 co-relation queries the response was YES. [2024-06-28 01:57:08,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25854 conditions, 5947 events. 3961/5947 cut-off events. For 39793/39793 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 33036 event pairs, 809 based on Foata normal form. 4/5945 useless extension candidates. Maximal degree in co-relation 25798. Up to 5457 conditions per place. [2024-06-28 01:57:08,873 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 175 selfloop transitions, 33 changer transitions 0/215 dead transitions. [2024-06-28 01:57:08,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 215 transitions, 2059 flow [2024-06-28 01:57:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:08,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:57:08,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 01:57:08,874 INFO L175 Difference]: Start difference. First operand has 128 places, 150 transitions, 1458 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:57:08,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 215 transitions, 2059 flow [2024-06-28 01:57:08,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 215 transitions, 1973 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:57:08,929 INFO L231 Difference]: Finished difference. Result has 130 places, 152 transitions, 1463 flow [2024-06-28 01:57:08,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1463, PETRI_PLACES=130, PETRI_TRANSITIONS=152} [2024-06-28 01:57:08,929 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 79 predicate places. [2024-06-28 01:57:08,929 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 152 transitions, 1463 flow [2024-06-28 01:57:08,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:08,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:08,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:08,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:57:08,930 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:08,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1471974091, now seen corresponding path program 4 times [2024-06-28 01:57:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466237852] [2024-06-28 01:57:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:11,811 INFO 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 01:57:11,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:11,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466237852] [2024-06-28 01:57:11,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466237852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:11,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:11,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:11,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590510795] [2024-06-28 01:57:11,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:11,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:11,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:11,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:57:11,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 152 transitions, 1463 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:11,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:11,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:57:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:13,569 INFO L124 PetriNetUnfolderBase]: 3667/5630 cut-off events. [2024-06-28 01:57:13,570 INFO L125 PetriNetUnfolderBase]: For 45173/45270 co-relation queries the response was YES. [2024-06-28 01:57:13,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25083 conditions, 5630 events. 3667/5630 cut-off events. For 45173/45270 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 32520 event pairs, 434 based on Foata normal form. 39/5517 useless extension candidates. Maximal degree in co-relation 25026. Up to 4691 conditions per place. [2024-06-28 01:57:13,602 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 126 selfloop transitions, 53 changer transitions 0/207 dead transitions. [2024-06-28 01:57:13,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 207 transitions, 1968 flow [2024-06-28 01:57:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 01:57:13,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775075987841946 [2024-06-28 01:57:13,604 INFO L175 Difference]: Start difference. First operand has 130 places, 152 transitions, 1463 flow. Second operand 7 states and 190 transitions. [2024-06-28 01:57:13,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 207 transitions, 1968 flow [2024-06-28 01:57:13,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 207 transitions, 1895 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:57:13,655 INFO L231 Difference]: Finished difference. Result has 131 places, 152 transitions, 1512 flow [2024-06-28 01:57:13,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1512, PETRI_PLACES=131, PETRI_TRANSITIONS=152} [2024-06-28 01:57:13,656 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-28 01:57:13,656 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 152 transitions, 1512 flow [2024-06-28 01:57:13,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:13,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:13,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:13,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:57:13,656 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:13,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1471789393, now seen corresponding path program 2 times [2024-06-28 01:57:13,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:13,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398935913] [2024-06-28 01:57:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:13,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:16,663 INFO 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 01:57:16,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:16,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398935913] [2024-06-28 01:57:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398935913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:16,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415640986] [2024-06-28 01:57:16,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:16,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:16,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:16,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:57:16,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 152 transitions, 1512 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:16,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:16,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:57:16,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:18,216 INFO L124 PetriNetUnfolderBase]: 3998/6004 cut-off events. [2024-06-28 01:57:18,216 INFO L125 PetriNetUnfolderBase]: For 46018/46018 co-relation queries the response was YES. [2024-06-28 01:57:18,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26891 conditions, 6004 events. 3998/6004 cut-off events. For 46018/46018 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 33404 event pairs, 804 based on Foata normal form. 4/6002 useless extension candidates. Maximal degree in co-relation 26833. Up to 5466 conditions per place. [2024-06-28 01:57:18,257 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 164 selfloop transitions, 35 changer transitions 0/206 dead transitions. [2024-06-28 01:57:18,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 206 transitions, 2069 flow [2024-06-28 01:57:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 01:57:18,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547112462006079 [2024-06-28 01:57:18,259 INFO L175 Difference]: Start difference. First operand has 131 places, 152 transitions, 1512 flow. Second operand 7 states and 180 transitions. [2024-06-28 01:57:18,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 206 transitions, 2069 flow [2024-06-28 01:57:18,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 206 transitions, 1951 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:57:18,327 INFO L231 Difference]: Finished difference. Result has 132 places, 154 transitions, 1496 flow [2024-06-28 01:57:18,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1496, PETRI_PLACES=132, PETRI_TRANSITIONS=154} [2024-06-28 01:57:18,328 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 81 predicate places. [2024-06-28 01:57:18,328 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 154 transitions, 1496 flow [2024-06-28 01:57:18,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:18,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:18,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:18,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:57:18,329 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:18,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1243888243, now seen corresponding path program 3 times [2024-06-28 01:57:18,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:18,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072264089] [2024-06-28 01:57:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:18,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:21,570 INFO 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 01:57:21,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:21,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072264089] [2024-06-28 01:57:21,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072264089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:21,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:21,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:21,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679645768] [2024-06-28 01:57:21,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:21,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:21,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:21,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:21,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:57:21,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 154 transitions, 1496 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:21,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:21,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:57:21,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:23,206 INFO L124 PetriNetUnfolderBase]: 4048/6091 cut-off events. [2024-06-28 01:57:23,206 INFO L125 PetriNetUnfolderBase]: For 48058/48089 co-relation queries the response was YES. [2024-06-28 01:57:23,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27468 conditions, 6091 events. 4048/6091 cut-off events. For 48058/48089 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 34010 event pairs, 846 based on Foata normal form. 26/6109 useless extension candidates. Maximal degree in co-relation 27409. Up to 5586 conditions per place. [2024-06-28 01:57:23,252 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 167 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2024-06-28 01:57:23,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 205 transitions, 2050 flow [2024-06-28 01:57:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:57:23,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:57:23,254 INFO L175 Difference]: Start difference. First operand has 132 places, 154 transitions, 1496 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:57:23,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 205 transitions, 2050 flow [2024-06-28 01:57:23,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 205 transitions, 1966 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:23,318 INFO L231 Difference]: Finished difference. Result has 134 places, 156 transitions, 1507 flow [2024-06-28 01:57:23,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1507, PETRI_PLACES=134, PETRI_TRANSITIONS=156} [2024-06-28 01:57:23,318 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 83 predicate places. [2024-06-28 01:57:23,318 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 156 transitions, 1507 flow [2024-06-28 01:57:23,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:23,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:23,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:23,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:57:23,319 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:23,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1235317363, now seen corresponding path program 4 times [2024-06-28 01:57:23,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:23,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659357254] [2024-06-28 01:57:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:23,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:25,771 INFO 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 01:57:25,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:25,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659357254] [2024-06-28 01:57:25,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659357254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:25,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:25,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498808887] [2024-06-28 01:57:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:25,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:25,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:25,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:25,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:25,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:57:25,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 156 transitions, 1507 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:25,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:25,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:57:25,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:27,560 INFO L124 PetriNetUnfolderBase]: 4040/6084 cut-off events. [2024-06-28 01:57:27,560 INFO L125 PetriNetUnfolderBase]: For 45702/45714 co-relation queries the response was YES. [2024-06-28 01:57:27,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27232 conditions, 6084 events. 4040/6084 cut-off events. For 45702/45714 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 33948 event pairs, 717 based on Foata normal form. 12/6091 useless extension candidates. Maximal degree in co-relation 27172. Up to 5378 conditions per place. [2024-06-28 01:57:27,595 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 174 selfloop transitions, 45 changer transitions 0/226 dead transitions. [2024-06-28 01:57:27,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 226 transitions, 2222 flow [2024-06-28 01:57:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:57:27,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 01:57:27,597 INFO L175 Difference]: Start difference. First operand has 134 places, 156 transitions, 1507 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:57:27,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 226 transitions, 2222 flow [2024-06-28 01:57:27,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 226 transitions, 2145 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:27,657 INFO L231 Difference]: Finished difference. Result has 140 places, 164 transitions, 1649 flow [2024-06-28 01:57:27,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1649, PETRI_PLACES=140, PETRI_TRANSITIONS=164} [2024-06-28 01:57:27,658 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 89 predicate places. [2024-06-28 01:57:27,658 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 164 transitions, 1649 flow [2024-06-28 01:57:27,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:27,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:27,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:27,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:57:27,659 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:27,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:27,659 INFO L85 PathProgramCache]: Analyzing trace with hash -659990855, now seen corresponding path program 1 times [2024-06-28 01:57:27,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:27,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337148868] [2024-06-28 01:57:27,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:27,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:29,331 INFO 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 01:57:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337148868] [2024-06-28 01:57:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337148868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:29,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729327765] [2024-06-28 01:57:29,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:29,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:29,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:57:29,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 164 transitions, 1649 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 01:57:29,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:29,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:57:29,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:30,603 INFO L124 PetriNetUnfolderBase]: 3774/5999 cut-off events. [2024-06-28 01:57:30,604 INFO L125 PetriNetUnfolderBase]: For 50445/50497 co-relation queries the response was YES. [2024-06-28 01:57:30,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27058 conditions, 5999 events. 3774/5999 cut-off events. For 50445/50497 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 35573 event pairs, 1048 based on Foata normal form. 47/6012 useless extension candidates. Maximal degree in co-relation 26995. Up to 5349 conditions per place. [2024-06-28 01:57:30,647 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 156 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2024-06-28 01:57:30,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 187 transitions, 2073 flow [2024-06-28 01:57:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:57:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:57:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:57:30,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-28 01:57:30,649 INFO L175 Difference]: Start difference. First operand has 140 places, 164 transitions, 1649 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:57:30,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 187 transitions, 2073 flow [2024-06-28 01:57:30,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 187 transitions, 2010 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:30,727 INFO L231 Difference]: Finished difference. Result has 141 places, 168 transitions, 1667 flow [2024-06-28 01:57:30,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1667, PETRI_PLACES=141, PETRI_TRANSITIONS=168} [2024-06-28 01:57:30,727 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 90 predicate places. [2024-06-28 01:57:30,727 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 168 transitions, 1667 flow [2024-06-28 01:57:30,727 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 01:57:30,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:30,728 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 01:57:30,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:57:30,728 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:30,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1762748758, now seen corresponding path program 1 times [2024-06-28 01:57:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:30,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568713612] [2024-06-28 01:57:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:34,408 INFO 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 01:57:34,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:34,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568713612] [2024-06-28 01:57:34,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568713612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:34,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:34,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:57:34,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65572445] [2024-06-28 01:57:34,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:34,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:57:34,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:34,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:57:34,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:57:34,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:57:34,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 168 transitions, 1667 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:34,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:34,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:57:34,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:36,343 INFO L124 PetriNetUnfolderBase]: 4300/6530 cut-off events. [2024-06-28 01:57:36,344 INFO L125 PetriNetUnfolderBase]: For 59952/59952 co-relation queries the response was YES. [2024-06-28 01:57:36,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30904 conditions, 6530 events. 4300/6530 cut-off events. For 59952/59952 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 37399 event pairs, 461 based on Foata normal form. 12/6536 useless extension candidates. Maximal degree in co-relation 30840. Up to 4902 conditions per place. [2024-06-28 01:57:36,391 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 193 selfloop transitions, 62 changer transitions 0/262 dead transitions. [2024-06-28 01:57:36,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 262 transitions, 2600 flow [2024-06-28 01:57:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:36,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:36,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 01:57:36,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-06-28 01:57:36,393 INFO L175 Difference]: Start difference. First operand has 141 places, 168 transitions, 1667 flow. Second operand 9 states and 243 transitions. [2024-06-28 01:57:36,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 262 transitions, 2600 flow [2024-06-28 01:57:36,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 262 transitions, 2550 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:36,466 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1831 flow [2024-06-28 01:57:36,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1831, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-06-28 01:57:36,467 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 98 predicate places. [2024-06-28 01:57:36,467 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1831 flow [2024-06-28 01:57:36,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:36,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:36,468 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 01:57:36,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:57:36,468 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:36,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:36,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1606658694, now seen corresponding path program 2 times [2024-06-28 01:57:36,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:36,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753704182] [2024-06-28 01:57:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:36,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753704182] [2024-06-28 01:57:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753704182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:39,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:39,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:57:39,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524214361] [2024-06-28 01:57:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:57:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:57:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:57:39,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:57:39,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1831 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:39,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:39,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:57:39,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:42,153 INFO L124 PetriNetUnfolderBase]: 4630/7044 cut-off events. [2024-06-28 01:57:42,154 INFO L125 PetriNetUnfolderBase]: For 72711/72711 co-relation queries the response was YES. [2024-06-28 01:57:42,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34512 conditions, 7044 events. 4630/7044 cut-off events. For 72711/72711 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 40959 event pairs, 882 based on Foata normal form. 12/7050 useless extension candidates. Maximal degree in co-relation 34445. Up to 5820 conditions per place. [2024-06-28 01:57:42,211 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 193 selfloop transitions, 61 changer transitions 0/261 dead transitions. [2024-06-28 01:57:42,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 261 transitions, 2723 flow [2024-06-28 01:57:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 01:57:42,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-06-28 01:57:42,212 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1831 flow. Second operand 9 states and 243 transitions. [2024-06-28 01:57:42,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 261 transitions, 2723 flow [2024-06-28 01:57:42,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 261 transitions, 2630 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:42,334 INFO L231 Difference]: Finished difference. Result has 155 places, 176 transitions, 1916 flow [2024-06-28 01:57:42,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1916, PETRI_PLACES=155, PETRI_TRANSITIONS=176} [2024-06-28 01:57:42,335 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 104 predicate places. [2024-06-28 01:57:42,335 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 176 transitions, 1916 flow [2024-06-28 01:57:42,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:42,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:42,336 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 01:57:42,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:57:42,336 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:42,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:42,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1761462992, now seen corresponding path program 3 times [2024-06-28 01:57:42,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:42,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600399626] [2024-06-28 01:57:42,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:42,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:46,026 INFO 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 01:57:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600399626] [2024-06-28 01:57:46,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600399626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:46,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:46,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:57:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901370732] [2024-06-28 01:57:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:46,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:57:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:57:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:57:46,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:57:46,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 176 transitions, 1916 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:46,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:46,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:57:46,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:48,277 INFO L124 PetriNetUnfolderBase]: 4602/7000 cut-off events. [2024-06-28 01:57:48,278 INFO L125 PetriNetUnfolderBase]: For 72353/72353 co-relation queries the response was YES. [2024-06-28 01:57:48,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34494 conditions, 7000 events. 4602/7000 cut-off events. For 72353/72353 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40687 event pairs, 910 based on Foata normal form. 16/7010 useless extension candidates. Maximal degree in co-relation 34424. Up to 6032 conditions per place. [2024-06-28 01:57:48,335 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 190 selfloop transitions, 60 changer transitions 0/257 dead transitions. [2024-06-28 01:57:48,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 257 transitions, 2671 flow [2024-06-28 01:57:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:57:48,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2024-06-28 01:57:48,336 INFO L175 Difference]: Start difference. First operand has 155 places, 176 transitions, 1916 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:57:48,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 257 transitions, 2671 flow [2024-06-28 01:57:48,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 257 transitions, 2586 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:48,481 INFO L231 Difference]: Finished difference. Result has 159 places, 177 transitions, 1978 flow [2024-06-28 01:57:48,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1978, PETRI_PLACES=159, PETRI_TRANSITIONS=177} [2024-06-28 01:57:48,482 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2024-06-28 01:57:48,482 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 177 transitions, 1978 flow [2024-06-28 01:57:48,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:48,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:48,482 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 01:57:48,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:57:48,483 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:48,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:48,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1899991142, now seen corresponding path program 4 times [2024-06-28 01:57:48,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:48,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209437252] [2024-06-28 01:57:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:48,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:52,131 INFO 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 01:57:52,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:52,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209437252] [2024-06-28 01:57:52,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209437252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:52,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:52,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:57:52,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184380335] [2024-06-28 01:57:52,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:52,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:57:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:57:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:57:52,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:57:52,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 177 transitions, 1978 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:52,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:52,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:57:52,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:54,210 INFO L124 PetriNetUnfolderBase]: 4778/7294 cut-off events. [2024-06-28 01:57:54,211 INFO L125 PetriNetUnfolderBase]: For 76435/76435 co-relation queries the response was YES. [2024-06-28 01:57:54,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36201 conditions, 7294 events. 4778/7294 cut-off events. For 76435/76435 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 42938 event pairs, 950 based on Foata normal form. 16/7304 useless extension candidates. Maximal degree in co-relation 36129. Up to 6473 conditions per place. [2024-06-28 01:57:54,268 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 204 selfloop transitions, 43 changer transitions 0/254 dead transitions. [2024-06-28 01:57:54,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 254 transitions, 2714 flow [2024-06-28 01:57:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:57:54,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:57:54,269 INFO L175 Difference]: Start difference. First operand has 159 places, 177 transitions, 1978 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:57:54,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 254 transitions, 2714 flow [2024-06-28 01:57:54,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 254 transitions, 2597 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:57:54,399 INFO L231 Difference]: Finished difference. Result has 161 places, 178 transitions, 1973 flow [2024-06-28 01:57:54,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1973, PETRI_PLACES=161, PETRI_TRANSITIONS=178} [2024-06-28 01:57:54,400 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 110 predicate places. [2024-06-28 01:57:54,400 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 178 transitions, 1973 flow [2024-06-28 01:57:54,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:54,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:54,400 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 01:57:54,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:57:54,401 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:54,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:54,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1522052912, now seen corresponding path program 5 times [2024-06-28 01:57:54,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:54,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860044007] [2024-06-28 01:57:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:54,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:58,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:58,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860044007] [2024-06-28 01:57:58,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860044007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:58,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:58,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:57:58,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887170608] [2024-06-28 01:57:58,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:58,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:57:58,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:58,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:57:58,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:57:58,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:57:58,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 178 transitions, 1973 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:58,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:58,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:57:58,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:00,410 INFO L124 PetriNetUnfolderBase]: 5108/7808 cut-off events. [2024-06-28 01:58:00,410 INFO L125 PetriNetUnfolderBase]: For 88573/88573 co-relation queries the response was YES. [2024-06-28 01:58:00,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39197 conditions, 7808 events. 5108/7808 cut-off events. For 88573/88573 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 46782 event pairs, 970 based on Foata normal form. 12/7814 useless extension candidates. Maximal degree in co-relation 39124. Up to 6499 conditions per place. [2024-06-28 01:58:00,475 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 210 selfloop transitions, 45 changer transitions 0/262 dead transitions. [2024-06-28 01:58:00,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 262 transitions, 2873 flow [2024-06-28 01:58:00,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:58:00,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2024-06-28 01:58:00,476 INFO L175 Difference]: Start difference. First operand has 161 places, 178 transitions, 1973 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:58:00,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 262 transitions, 2873 flow [2024-06-28 01:58:00,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 262 transitions, 2784 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:58:00,635 INFO L231 Difference]: Finished difference. Result has 164 places, 181 transitions, 2039 flow [2024-06-28 01:58:00,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2039, PETRI_PLACES=164, PETRI_TRANSITIONS=181} [2024-06-28 01:58:00,636 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 113 predicate places. [2024-06-28 01:58:00,636 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 181 transitions, 2039 flow [2024-06-28 01:58:00,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:00,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:00,636 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 01:58:00,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:58:00,636 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:00,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1905353522, now seen corresponding path program 6 times [2024-06-28 01:58:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:00,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997897991] [2024-06-28 01:58:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:00,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:03,925 INFO 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 01:58:03,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:03,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997897991] [2024-06-28 01:58:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997897991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:03,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:03,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098123177] [2024-06-28 01:58:03,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:03,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:03,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:03,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:03,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:04,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:04,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 181 transitions, 2039 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:04,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:04,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:04,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:06,495 INFO L124 PetriNetUnfolderBase]: 5080/7764 cut-off events. [2024-06-28 01:58:06,495 INFO L125 PetriNetUnfolderBase]: For 89984/89984 co-relation queries the response was YES. [2024-06-28 01:58:06,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39054 conditions, 7764 events. 5080/7764 cut-off events. For 89984/89984 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 46484 event pairs, 998 based on Foata normal form. 16/7774 useless extension candidates. Maximal degree in co-relation 38979. Up to 6943 conditions per place. [2024-06-28 01:58:06,547 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 229 selfloop transitions, 44 changer transitions 0/280 dead transitions. [2024-06-28 01:58:06,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 280 transitions, 2896 flow [2024-06-28 01:58:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:58:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:58:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-06-28 01:58:06,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-28 01:58:06,548 INFO L175 Difference]: Start difference. First operand has 164 places, 181 transitions, 2039 flow. Second operand 11 states and 282 transitions. [2024-06-28 01:58:06,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 280 transitions, 2896 flow [2024-06-28 01:58:06,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 280 transitions, 2825 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:06,697 INFO L231 Difference]: Finished difference. Result has 170 places, 182 transitions, 2087 flow [2024-06-28 01:58:06,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2087, PETRI_PLACES=170, PETRI_TRANSITIONS=182} [2024-06-28 01:58:06,697 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 119 predicate places. [2024-06-28 01:58:06,697 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 182 transitions, 2087 flow [2024-06-28 01:58:06,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:06,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:06,697 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 01:58:06,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:58:06,698 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:06,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:06,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1905568724, now seen corresponding path program 1 times [2024-06-28 01:58:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:06,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960325443] [2024-06-28 01:58:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:06,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:10,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:10,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960325443] [2024-06-28 01:58:10,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960325443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:10,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:10,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:10,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268115372] [2024-06-28 01:58:10,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:10,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:10,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:10,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:10,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:10,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:10,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 182 transitions, 2087 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:10,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:10,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:10,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:12,812 INFO L124 PetriNetUnfolderBase]: 5206/7986 cut-off events. [2024-06-28 01:58:12,812 INFO L125 PetriNetUnfolderBase]: For 91752/91752 co-relation queries the response was YES. [2024-06-28 01:58:12,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40051 conditions, 7986 events. 5206/7986 cut-off events. For 91752/91752 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 48180 event pairs, 990 based on Foata normal form. 12/7992 useless extension candidates. Maximal degree in co-relation 39974. Up to 6689 conditions per place. [2024-06-28 01:58:12,896 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 229 selfloop transitions, 48 changer transitions 0/284 dead transitions. [2024-06-28 01:58:12,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 284 transitions, 2958 flow [2024-06-28 01:58:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:58:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:58:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-28 01:58:12,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493230174081238 [2024-06-28 01:58:12,898 INFO L175 Difference]: Start difference. First operand has 170 places, 182 transitions, 2087 flow. Second operand 11 states and 284 transitions. [2024-06-28 01:58:12,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 284 transitions, 2958 flow [2024-06-28 01:58:13,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 284 transitions, 2871 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:58:13,083 INFO L231 Difference]: Finished difference. Result has 172 places, 183 transitions, 2120 flow [2024-06-28 01:58:13,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2120, PETRI_PLACES=172, PETRI_TRANSITIONS=183} [2024-06-28 01:58:13,083 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 121 predicate places. [2024-06-28 01:58:13,084 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 183 transitions, 2120 flow [2024-06-28 01:58:13,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:13,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:13,084 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 01:58:13,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:58:13,084 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:13,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:13,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1618955412, now seen corresponding path program 7 times [2024-06-28 01:58:13,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:13,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462924044] [2024-06-28 01:58:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:13,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:16,467 INFO 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 01:58:16,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:16,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462924044] [2024-06-28 01:58:16,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462924044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:16,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:16,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647493025] [2024-06-28 01:58:16,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:16,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:16,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:16,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 183 transitions, 2120 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:16,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:16,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:16,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:19,246 INFO L124 PetriNetUnfolderBase]: 5382/8260 cut-off events. [2024-06-28 01:58:19,246 INFO L125 PetriNetUnfolderBase]: For 100990/100990 co-relation queries the response was YES. [2024-06-28 01:58:19,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41783 conditions, 8260 events. 5382/8260 cut-off events. For 100990/100990 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 50294 event pairs, 1058 based on Foata normal form. 16/8270 useless extension candidates. Maximal degree in co-relation 41705. Up to 7058 conditions per place. [2024-06-28 01:58:19,315 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 209 selfloop transitions, 59 changer transitions 0/275 dead transitions. [2024-06-28 01:58:19,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 275 transitions, 2946 flow [2024-06-28 01:58:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:19,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-28 01:58:19,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595744680851064 [2024-06-28 01:58:19,317 INFO L175 Difference]: Start difference. First operand has 172 places, 183 transitions, 2120 flow. Second operand 10 states and 263 transitions. [2024-06-28 01:58:19,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 275 transitions, 2946 flow [2024-06-28 01:58:19,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 275 transitions, 2842 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:58:19,532 INFO L231 Difference]: Finished difference. Result has 173 places, 184 transitions, 2167 flow [2024-06-28 01:58:19,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2167, PETRI_PLACES=173, PETRI_TRANSITIONS=184} [2024-06-28 01:58:19,533 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 122 predicate places. [2024-06-28 01:58:19,533 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 184 transitions, 2167 flow [2024-06-28 01:58:19,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:19,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:19,533 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 01:58:19,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:58:19,533 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:19,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:19,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1613593032, now seen corresponding path program 8 times [2024-06-28 01:58:19,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:19,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154974046] [2024-06-28 01:58:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:19,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:22,996 INFO 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 01:58:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154974046] [2024-06-28 01:58:22,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154974046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:22,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:22,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104006768] [2024-06-28 01:58:22,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:22,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:22,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:22,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:22,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:23,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:23,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 184 transitions, 2167 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:23,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:23,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:23,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:25,535 INFO L124 PetriNetUnfolderBase]: 5558/8556 cut-off events. [2024-06-28 01:58:25,536 INFO L125 PetriNetUnfolderBase]: For 109410/109410 co-relation queries the response was YES. [2024-06-28 01:58:25,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43479 conditions, 8556 events. 5558/8556 cut-off events. For 109410/109410 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 52679 event pairs, 1098 based on Foata normal form. 16/8566 useless extension candidates. Maximal degree in co-relation 43400. Up to 7330 conditions per place. [2024-06-28 01:58:25,598 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 190 selfloop transitions, 57 changer transitions 0/254 dead transitions. [2024-06-28 01:58:25,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 254 transitions, 2889 flow [2024-06-28 01:58:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:58:25,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-06-28 01:58:25,600 INFO L175 Difference]: Start difference. First operand has 173 places, 184 transitions, 2167 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:58:25,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 254 transitions, 2889 flow [2024-06-28 01:58:25,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 254 transitions, 2769 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:58:25,797 INFO L231 Difference]: Finished difference. Result has 173 places, 185 transitions, 2196 flow [2024-06-28 01:58:25,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2047, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2196, PETRI_PLACES=173, PETRI_TRANSITIONS=185} [2024-06-28 01:58:25,797 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 122 predicate places. [2024-06-28 01:58:25,798 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 185 transitions, 2196 flow [2024-06-28 01:58:25,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:25,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:25,798 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 01:58:25,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:58:25,798 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:25,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:25,798 INFO L85 PathProgramCache]: Analyzing trace with hash -989342852, now seen corresponding path program 9 times [2024-06-28 01:58:25,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:25,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248751431] [2024-06-28 01:58:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:25,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:29,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:29,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248751431] [2024-06-28 01:58:29,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248751431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:29,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:29,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760959590] [2024-06-28 01:58:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:29,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:29,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:29,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:29,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:29,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:29,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 185 transitions, 2196 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:29,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:29,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:29,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:32,063 INFO L124 PetriNetUnfolderBase]: 5684/8754 cut-off events. [2024-06-28 01:58:32,064 INFO L125 PetriNetUnfolderBase]: For 115104/115104 co-relation queries the response was YES. [2024-06-28 01:58:32,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44699 conditions, 8754 events. 5684/8754 cut-off events. For 115104/115104 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 53986 event pairs, 763 based on Foata normal form. 12/8760 useless extension candidates. Maximal degree in co-relation 44619. Up to 6294 conditions per place. [2024-06-28 01:58:32,142 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 190 selfloop transitions, 64 changer transitions 0/261 dead transitions. [2024-06-28 01:58:32,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 261 transitions, 3081 flow [2024-06-28 01:58:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:32,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 01:58:32,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-06-28 01:58:32,144 INFO L175 Difference]: Start difference. First operand has 173 places, 185 transitions, 2196 flow. Second operand 8 states and 218 transitions. [2024-06-28 01:58:32,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 261 transitions, 3081 flow [2024-06-28 01:58:32,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 261 transitions, 2965 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:32,360 INFO L231 Difference]: Finished difference. Result has 176 places, 187 transitions, 2274 flow [2024-06-28 01:58:32,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2274, PETRI_PLACES=176, PETRI_TRANSITIONS=187} [2024-06-28 01:58:32,360 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 125 predicate places. [2024-06-28 01:58:32,360 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 187 transitions, 2274 flow [2024-06-28 01:58:32,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:32,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:32,361 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 01:58:32,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:58:32,361 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:32,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash 93956470, now seen corresponding path program 10 times [2024-06-28 01:58:32,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:32,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656465252] [2024-06-28 01:58:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:35,414 INFO 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 01:58:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656465252] [2024-06-28 01:58:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656465252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:35,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:35,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712444890] [2024-06-28 01:58:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:35,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:35,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:35,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:35,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 187 transitions, 2274 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:35,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:35,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:35,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:38,148 INFO L124 PetriNetUnfolderBase]: 5656/8723 cut-off events. [2024-06-28 01:58:38,148 INFO L125 PetriNetUnfolderBase]: For 117486/117517 co-relation queries the response was YES. [2024-06-28 01:58:38,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44869 conditions, 8723 events. 5656/8723 cut-off events. For 117486/117517 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 54092 event pairs, 1126 based on Foata normal form. 38/8753 useless extension candidates. Maximal degree in co-relation 44787. Up to 7716 conditions per place. [2024-06-28 01:58:38,222 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 213 selfloop transitions, 56 changer transitions 0/276 dead transitions. [2024-06-28 01:58:38,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 276 transitions, 3104 flow [2024-06-28 01:58:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 01:58:38,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468085106382978 [2024-06-28 01:58:38,224 INFO L175 Difference]: Start difference. First operand has 176 places, 187 transitions, 2274 flow. Second operand 10 states and 257 transitions. [2024-06-28 01:58:38,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 276 transitions, 3104 flow [2024-06-28 01:58:38,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 276 transitions, 2899 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:58:38,477 INFO L231 Difference]: Finished difference. Result has 178 places, 188 transitions, 2218 flow [2024-06-28 01:58:38,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2218, PETRI_PLACES=178, PETRI_TRANSITIONS=188} [2024-06-28 01:58:38,478 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 127 predicate places. [2024-06-28 01:58:38,478 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 188 transitions, 2218 flow [2024-06-28 01:58:38,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:38,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:38,478 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 01:58:38,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:58:38,479 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:38,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1619170614, now seen corresponding path program 2 times [2024-06-28 01:58:38,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:38,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450484491] [2024-06-28 01:58:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:38,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:41,870 INFO 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 01:58:41,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:41,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450484491] [2024-06-28 01:58:41,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450484491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:41,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:41,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:41,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074381725] [2024-06-28 01:58:41,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:41,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:41,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:41,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:41,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:41,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 188 transitions, 2218 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:41,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:41,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:41,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:44,590 INFO L124 PetriNetUnfolderBase]: 5782/8932 cut-off events. [2024-06-28 01:58:44,590 INFO L125 PetriNetUnfolderBase]: For 108376/108376 co-relation queries the response was YES. [2024-06-28 01:58:44,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44323 conditions, 8932 events. 5782/8932 cut-off events. For 108376/108376 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 55528 event pairs, 1058 based on Foata normal form. 12/8938 useless extension candidates. Maximal degree in co-relation 44242. Up to 6778 conditions per place. [2024-06-28 01:58:44,652 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 209 selfloop transitions, 67 changer transitions 0/283 dead transitions. [2024-06-28 01:58:44,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 283 transitions, 3069 flow [2024-06-28 01:58:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-28 01:58:44,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-28 01:58:44,654 INFO L175 Difference]: Start difference. First operand has 178 places, 188 transitions, 2218 flow. Second operand 10 states and 265 transitions. [2024-06-28 01:58:44,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 283 transitions, 3069 flow [2024-06-28 01:58:44,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 283 transitions, 2952 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:58:44,881 INFO L231 Difference]: Finished difference. Result has 180 places, 189 transitions, 2263 flow [2024-06-28 01:58:44,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2263, PETRI_PLACES=180, PETRI_TRANSITIONS=189} [2024-06-28 01:58:44,882 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 129 predicate places. [2024-06-28 01:58:44,882 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 189 transitions, 2263 flow [2024-06-28 01:58:44,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:44,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:44,882 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 01:58:44,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:58:44,882 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:44,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 94171672, now seen corresponding path program 3 times [2024-06-28 01:58:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:44,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885087705] [2024-06-28 01:58:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:47,848 INFO 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 01:58:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:47,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885087705] [2024-06-28 01:58:47,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885087705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:47,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:47,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103823727] [2024-06-28 01:58:47,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:47,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:47,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:47,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:47,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 189 transitions, 2263 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:47,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:47,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:47,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:50,389 INFO L124 PetriNetUnfolderBase]: 5908/9171 cut-off events. [2024-06-28 01:58:50,389 INFO L125 PetriNetUnfolderBase]: For 116780/116811 co-relation queries the response was YES. [2024-06-28 01:58:50,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45726 conditions, 9171 events. 5908/9171 cut-off events. For 116780/116811 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 57743 event pairs, 1172 based on Foata normal form. 34/9197 useless extension candidates. Maximal degree in co-relation 45644. Up to 7892 conditions per place. [2024-06-28 01:58:50,471 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 226 selfloop transitions, 59 changer transitions 0/292 dead transitions. [2024-06-28 01:58:50,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 292 transitions, 3161 flow [2024-06-28 01:58:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:58:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:58:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-28 01:58:50,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493230174081238 [2024-06-28 01:58:50,472 INFO L175 Difference]: Start difference. First operand has 180 places, 189 transitions, 2263 flow. Second operand 11 states and 284 transitions. [2024-06-28 01:58:50,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 292 transitions, 3161 flow [2024-06-28 01:58:50,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 292 transitions, 3013 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:58:50,705 INFO L231 Difference]: Finished difference. Result has 183 places, 190 transitions, 2261 flow [2024-06-28 01:58:50,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2261, PETRI_PLACES=183, PETRI_TRANSITIONS=190} [2024-06-28 01:58:50,705 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 132 predicate places. [2024-06-28 01:58:50,705 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 190 transitions, 2261 flow [2024-06-28 01:58:50,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:50,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:50,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:50,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:58:50,706 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:50,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash 359868952, now seen corresponding path program 4 times [2024-06-28 01:58:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:50,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114037638] [2024-06-28 01:58:50,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:53,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:53,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114037638] [2024-06-28 01:58:53,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114037638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:53,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:53,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:53,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272739385] [2024-06-28 01:58:53,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:53,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:53,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:53,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:53,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:53,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:58:53,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 190 transitions, 2261 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:53,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:53,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:58:53,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:56,164 INFO L124 PetriNetUnfolderBase]: 5888/9131 cut-off events. [2024-06-28 01:58:56,164 INFO L125 PetriNetUnfolderBase]: For 107877/107908 co-relation queries the response was YES. [2024-06-28 01:58:56,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44711 conditions, 9131 events. 5888/9131 cut-off events. For 107877/107908 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 57147 event pairs, 1044 based on Foata normal form. 34/9157 useless extension candidates. Maximal degree in co-relation 44628. Up to 6214 conditions per place. [2024-06-28 01:58:56,233 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 203 selfloop transitions, 71 changer transitions 0/281 dead transitions. [2024-06-28 01:58:56,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 281 transitions, 3021 flow [2024-06-28 01:58:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:58:56,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551063829787234 [2024-06-28 01:58:56,234 INFO L175 Difference]: Start difference. First operand has 183 places, 190 transitions, 2261 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:58:56,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 281 transitions, 3021 flow [2024-06-28 01:58:56,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 281 transitions, 2893 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 01:58:56,459 INFO L231 Difference]: Finished difference. Result has 183 places, 189 transitions, 2213 flow [2024-06-28 01:58:56,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2213, PETRI_PLACES=183, PETRI_TRANSITIONS=189} [2024-06-28 01:58:56,460 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 132 predicate places. [2024-06-28 01:58:56,460 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 189 transitions, 2213 flow [2024-06-28 01:58:56,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:56,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:56,460 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 01:58:56,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:58:56,460 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:56,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:56,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1386348872, now seen corresponding path program 1 times [2024-06-28 01:58:56,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:56,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168254749] [2024-06-28 01:58:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:56,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:58,755 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 01:58:58,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:58,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168254749] [2024-06-28 01:58:58,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168254749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:58,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:58,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:58,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174836722] [2024-06-28 01:58:58,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:58,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:58,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:58,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:58,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:58:58,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 189 transitions, 2213 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:58,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:58,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:58:58,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:01,487 INFO L124 PetriNetUnfolderBase]: 6126/9561 cut-off events. [2024-06-28 01:59:01,487 INFO L125 PetriNetUnfolderBase]: For 113593/113621 co-relation queries the response was YES. [2024-06-28 01:59:01,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47583 conditions, 9561 events. 6126/9561 cut-off events. For 113593/113621 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 61082 event pairs, 1202 based on Foata normal form. 30/9547 useless extension candidates. Maximal degree in co-relation 47499. Up to 8510 conditions per place. [2024-06-28 01:59:01,573 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 209 selfloop transitions, 73 changer transitions 0/298 dead transitions. [2024-06-28 01:59:01,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 298 transitions, 3453 flow [2024-06-28 01:59:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:59:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:59:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-06-28 01:59:01,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145067698259188 [2024-06-28 01:59:01,576 INFO L175 Difference]: Start difference. First operand has 183 places, 189 transitions, 2213 flow. Second operand 11 states and 266 transitions. [2024-06-28 01:59:01,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 298 transitions, 3453 flow [2024-06-28 01:59:01,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 298 transitions, 3203 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 01:59:01,836 INFO L231 Difference]: Finished difference. Result has 188 places, 230 transitions, 2618 flow [2024-06-28 01:59:01,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2618, PETRI_PLACES=188, PETRI_TRANSITIONS=230} [2024-06-28 01:59:01,837 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 137 predicate places. [2024-06-28 01:59:01,837 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 230 transitions, 2618 flow [2024-06-28 01:59:01,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:01,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:01,837 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 01:59:01,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:59:01,838 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:01,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2048649536, now seen corresponding path program 2 times [2024-06-28 01:59:01,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:01,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403612919] [2024-06-28 01:59:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:01,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:04,473 INFO 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 01:59:04,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:04,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403612919] [2024-06-28 01:59:04,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403612919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:04,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:04,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:04,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061158705] [2024-06-28 01:59:04,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:04,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:04,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:04,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:04,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:04,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:59:04,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 230 transitions, 2618 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:04,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:04,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:59:04,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:06,669 INFO L124 PetriNetUnfolderBase]: 6412/9971 cut-off events. [2024-06-28 01:59:06,669 INFO L125 PetriNetUnfolderBase]: For 120132/120189 co-relation queries the response was YES. [2024-06-28 01:59:06,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49945 conditions, 9971 events. 6412/9971 cut-off events. For 120132/120189 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 63699 event pairs, 1212 based on Foata normal form. 30/9954 useless extension candidates. Maximal degree in co-relation 49858. Up to 8768 conditions per place. [2024-06-28 01:59:06,762 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 201 selfloop transitions, 94 changer transitions 0/311 dead transitions. [2024-06-28 01:59:06,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 311 transitions, 3813 flow [2024-06-28 01:59:06,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:59:06,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:59:06,763 INFO L175 Difference]: Start difference. First operand has 188 places, 230 transitions, 2618 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:59:06,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 311 transitions, 3813 flow [2024-06-28 01:59:07,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 311 transitions, 3664 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:07,082 INFO L231 Difference]: Finished difference. Result has 195 places, 261 transitions, 3088 flow [2024-06-28 01:59:07,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3088, PETRI_PLACES=195, PETRI_TRANSITIONS=261} [2024-06-28 01:59:07,083 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 144 predicate places. [2024-06-28 01:59:07,083 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 261 transitions, 3088 flow [2024-06-28 01:59:07,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:07,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:07,083 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 01:59:07,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:59:07,084 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:07,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1011576776, now seen corresponding path program 3 times [2024-06-28 01:59:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:07,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961550022] [2024-06-28 01:59:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:09,760 INFO 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 01:59:09,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:09,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961550022] [2024-06-28 01:59:09,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961550022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:09,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:09,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:09,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117345990] [2024-06-28 01:59:09,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:09,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:09,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:09,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:59:09,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 261 transitions, 3088 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:09,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:09,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:59:09,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:11,803 INFO L124 PetriNetUnfolderBase]: 6396/9963 cut-off events. [2024-06-28 01:59:11,803 INFO L125 PetriNetUnfolderBase]: For 125675/125734 co-relation queries the response was YES. [2024-06-28 01:59:11,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50673 conditions, 9963 events. 6396/9963 cut-off events. For 125675/125734 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 64008 event pairs, 1230 based on Foata normal form. 30/9946 useless extension candidates. Maximal degree in co-relation 50583. Up to 8760 conditions per place. [2024-06-28 01:59:11,915 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 191 selfloop transitions, 88 changer transitions 0/295 dead transitions. [2024-06-28 01:59:11,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 295 transitions, 3752 flow [2024-06-28 01:59:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 01:59:11,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 01:59:11,917 INFO L175 Difference]: Start difference. First operand has 195 places, 261 transitions, 3088 flow. Second operand 6 states and 153 transitions. [2024-06-28 01:59:11,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 295 transitions, 3752 flow [2024-06-28 01:59:12,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 295 transitions, 3659 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:12,288 INFO L231 Difference]: Finished difference. Result has 199 places, 261 transitions, 3207 flow [2024-06-28 01:59:12,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3207, PETRI_PLACES=199, PETRI_TRANSITIONS=261} [2024-06-28 01:59:12,288 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 148 predicate places. [2024-06-28 01:59:12,288 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 261 transitions, 3207 flow [2024-06-28 01:59:12,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:12,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:12,288 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 01:59:12,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:59:12,289 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:12,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:12,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1011161066, now seen corresponding path program 4 times [2024-06-28 01:59:12,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:12,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874570609] [2024-06-28 01:59:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:12,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:14,911 INFO 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 01:59:14,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:14,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874570609] [2024-06-28 01:59:14,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874570609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:14,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:14,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:14,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134113315] [2024-06-28 01:59:14,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:14,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:14,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:14,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:14,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:59:14,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 261 transitions, 3207 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:14,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:14,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:59:14,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:16,946 INFO L124 PetriNetUnfolderBase]: 6382/9939 cut-off events. [2024-06-28 01:59:16,946 INFO L125 PetriNetUnfolderBase]: For 131058/131140 co-relation queries the response was YES. [2024-06-28 01:59:17,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51063 conditions, 9939 events. 6382/9939 cut-off events. For 131058/131140 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 63709 event pairs, 1251 based on Foata normal form. 55/9937 useless extension candidates. Maximal degree in co-relation 50971. Up to 8566 conditions per place. [2024-06-28 01:59:17,057 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 186 selfloop transitions, 94 changer transitions 0/296 dead transitions. [2024-06-28 01:59:17,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 296 transitions, 3937 flow [2024-06-28 01:59:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:59:17,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:59:17,059 INFO L175 Difference]: Start difference. First operand has 199 places, 261 transitions, 3207 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:59:17,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 296 transitions, 3937 flow [2024-06-28 01:59:17,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 296 transitions, 3749 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:17,442 INFO L231 Difference]: Finished difference. Result has 201 places, 267 transitions, 3337 flow [2024-06-28 01:59:17,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3019, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3337, PETRI_PLACES=201, PETRI_TRANSITIONS=267} [2024-06-28 01:59:17,442 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 150 predicate places. [2024-06-28 01:59:17,442 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 267 transitions, 3337 flow [2024-06-28 01:59:17,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:17,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:17,443 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 01:59:17,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:59:17,443 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:17,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1226503038, now seen corresponding path program 1 times [2024-06-28 01:59:17,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:17,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889267476] [2024-06-28 01:59:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:19,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:19,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889267476] [2024-06-28 01:59:19,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889267476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:19,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:19,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:19,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114168605] [2024-06-28 01:59:19,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:19,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:19,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:19,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:19,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 267 transitions, 3337 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:59:19,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:19,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:19,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:21,691 INFO L124 PetriNetUnfolderBase]: 6697/10638 cut-off events. [2024-06-28 01:59:21,692 INFO L125 PetriNetUnfolderBase]: For 137942/137945 co-relation queries the response was YES. [2024-06-28 01:59:21,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54551 conditions, 10638 events. 6697/10638 cut-off events. For 137942/137945 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 70563 event pairs, 1735 based on Foata normal form. 3/10637 useless extension candidates. Maximal degree in co-relation 54457. Up to 9708 conditions per place. [2024-06-28 01:59:21,808 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 273 selfloop transitions, 24 changer transitions 0/304 dead transitions. [2024-06-28 01:59:21,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 304 transitions, 4208 flow [2024-06-28 01:59:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:59:21,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-28 01:59:21,810 INFO L175 Difference]: Start difference. First operand has 201 places, 267 transitions, 3337 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:59:21,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 304 transitions, 4208 flow [2024-06-28 01:59:22,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 304 transitions, 4108 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:22,192 INFO L231 Difference]: Finished difference. Result has 205 places, 275 transitions, 3408 flow [2024-06-28 01:59:22,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3408, PETRI_PLACES=205, PETRI_TRANSITIONS=275} [2024-06-28 01:59:22,193 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 154 predicate places. [2024-06-28 01:59:22,193 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 275 transitions, 3408 flow [2024-06-28 01:59:22,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:59:22,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:22,194 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 01:59:22,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:59:22,194 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:22,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:22,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1954147556, now seen corresponding path program 2 times [2024-06-28 01:59:22,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:22,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489051746] [2024-06-28 01:59:22,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:22,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:24,245 INFO 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 01:59:24,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:24,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489051746] [2024-06-28 01:59:24,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489051746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:24,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:24,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:59:24,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846285734] [2024-06-28 01:59:24,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:24,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:59:24,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:59:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:59:24,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:24,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 275 transitions, 3408 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:59:24,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:24,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:24,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:26,372 INFO L124 PetriNetUnfolderBase]: 6694/10634 cut-off events. [2024-06-28 01:59:26,373 INFO L125 PetriNetUnfolderBase]: For 142639/142642 co-relation queries the response was YES. [2024-06-28 01:59:26,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55455 conditions, 10634 events. 6694/10634 cut-off events. For 142639/142642 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 70469 event pairs, 1735 based on Foata normal form. 3/10633 useless extension candidates. Maximal degree in co-relation 55359. Up to 9716 conditions per place. [2024-06-28 01:59:26,479 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 271 selfloop transitions, 20 changer transitions 0/298 dead transitions. [2024-06-28 01:59:26,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 298 transitions, 4067 flow [2024-06-28 01:59:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:59:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:59:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:59:26,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-28 01:59:26,481 INFO L175 Difference]: Start difference. First operand has 205 places, 275 transitions, 3408 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:59:26,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 298 transitions, 4067 flow [2024-06-28 01:59:26,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 298 transitions, 3974 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:26,834 INFO L231 Difference]: Finished difference. Result has 208 places, 275 transitions, 3367 flow [2024-06-28 01:59:26,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3315, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3367, PETRI_PLACES=208, PETRI_TRANSITIONS=275} [2024-06-28 01:59:26,835 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 157 predicate places. [2024-06-28 01:59:26,835 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 275 transitions, 3367 flow [2024-06-28 01:59:26,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:59:26,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:26,835 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 01:59:26,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:59:26,835 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:26,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:26,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1011146186, now seen corresponding path program 1 times [2024-06-28 01:59:26,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:26,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958102023] [2024-06-28 01:59:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:26,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:29,646 INFO 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 01:59:29,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:29,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958102023] [2024-06-28 01:59:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958102023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:29,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:29,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311793998] [2024-06-28 01:59:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:29,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:29,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:59:29,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 275 transitions, 3367 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 01:59:29,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:29,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:59:29,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:31,650 INFO L124 PetriNetUnfolderBase]: 6368/10202 cut-off events. [2024-06-28 01:59:31,650 INFO L125 PetriNetUnfolderBase]: For 145274/145355 co-relation queries the response was YES. [2024-06-28 01:59:31,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53546 conditions, 10202 events. 6368/10202 cut-off events. For 145274/145355 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 67882 event pairs, 1661 based on Foata normal form. 42/10198 useless extension candidates. Maximal degree in co-relation 53448. Up to 9181 conditions per place. [2024-06-28 01:59:31,757 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 267 selfloop transitions, 19 changer transitions 0/302 dead transitions. [2024-06-28 01:59:31,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 302 transitions, 4057 flow [2024-06-28 01:59:31,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 01:59:31,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:59:31,759 INFO L175 Difference]: Start difference. First operand has 208 places, 275 transitions, 3367 flow. Second operand 6 states and 141 transitions. [2024-06-28 01:59:31,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 302 transitions, 4057 flow [2024-06-28 01:59:32,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 302 transitions, 4017 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:32,125 INFO L231 Difference]: Finished difference. Result has 210 places, 278 transitions, 3429 flow [2024-06-28 01:59:32,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3429, PETRI_PLACES=210, PETRI_TRANSITIONS=278} [2024-06-28 01:59:32,125 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 159 predicate places. [2024-06-28 01:59:32,126 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 278 transitions, 3429 flow [2024-06-28 01:59:32,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 01:59:32,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:32,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:32,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:59:32,126 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:32,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1840480695, now seen corresponding path program 1 times [2024-06-28 01:59:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:32,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310686307] [2024-06-28 01:59:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:34,984 INFO 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 01:59:34,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:34,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310686307] [2024-06-28 01:59:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310686307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:34,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:34,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558118341] [2024-06-28 01:59:34,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:34,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:34,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:34,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:34,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:35,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:35,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 278 transitions, 3429 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:59:35,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:35,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:35,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:37,619 INFO L124 PetriNetUnfolderBase]: 6805/10587 cut-off events. [2024-06-28 01:59:37,619 INFO L125 PetriNetUnfolderBase]: For 151954/151954 co-relation queries the response was YES. [2024-06-28 01:59:37,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56639 conditions, 10587 events. 6805/10587 cut-off events. For 151954/151954 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 68171 event pairs, 1327 based on Foata normal form. 2/10586 useless extension candidates. Maximal degree in co-relation 56540. Up to 9468 conditions per place. [2024-06-28 01:59:37,731 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 317 selfloop transitions, 57 changer transitions 0/381 dead transitions. [2024-06-28 01:59:37,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 381 transitions, 4824 flow [2024-06-28 01:59:37,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:59:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:59:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-28 01:59:37,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2024-06-28 01:59:37,732 INFO L175 Difference]: Start difference. First operand has 210 places, 278 transitions, 3429 flow. Second operand 10 states and 244 transitions. [2024-06-28 01:59:37,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 381 transitions, 4824 flow [2024-06-28 01:59:38,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 381 transitions, 4740 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:38,114 INFO L231 Difference]: Finished difference. Result has 219 places, 305 transitions, 3838 flow [2024-06-28 01:59:38,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3349, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3838, PETRI_PLACES=219, PETRI_TRANSITIONS=305} [2024-06-28 01:59:38,114 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 168 predicate places. [2024-06-28 01:59:38,114 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 305 transitions, 3838 flow [2024-06-28 01:59:38,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:59:38,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:38,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:38,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:59:38,115 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:38,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:38,115 INFO L85 PathProgramCache]: Analyzing trace with hash 916375065, now seen corresponding path program 2 times [2024-06-28 01:59:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:38,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944276586] [2024-06-28 01:59:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:38,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:41,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:41,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944276586] [2024-06-28 01:59:41,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944276586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:41,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:41,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835659266] [2024-06-28 01:59:41,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:41,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:41,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:41,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:41,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:41,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:41,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 305 transitions, 3838 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:59:41,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:41,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:41,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:43,916 INFO L124 PetriNetUnfolderBase]: 7199/11143 cut-off events. [2024-06-28 01:59:43,916 INFO L125 PetriNetUnfolderBase]: For 173810/173810 co-relation queries the response was YES. [2024-06-28 01:59:43,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62460 conditions, 11143 events. 7199/11143 cut-off events. For 173810/173810 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 71449 event pairs, 1353 based on Foata normal form. 2/11138 useless extension candidates. Maximal degree in co-relation 62357. Up to 9867 conditions per place. [2024-06-28 01:59:44,043 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 328 selfloop transitions, 77 changer transitions 0/412 dead transitions. [2024-06-28 01:59:44,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 412 transitions, 5687 flow [2024-06-28 01:59:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:59:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:59:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 233 transitions. [2024-06-28 01:59:44,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957446808510638 [2024-06-28 01:59:44,045 INFO L175 Difference]: Start difference. First operand has 219 places, 305 transitions, 3838 flow. Second operand 10 states and 233 transitions. [2024-06-28 01:59:44,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 412 transitions, 5687 flow [2024-06-28 01:59:44,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 412 transitions, 5425 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:44,475 INFO L231 Difference]: Finished difference. Result has 228 places, 346 transitions, 4405 flow [2024-06-28 01:59:44,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4405, PETRI_PLACES=228, PETRI_TRANSITIONS=346} [2024-06-28 01:59:44,476 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 177 predicate places. [2024-06-28 01:59:44,476 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 346 transitions, 4405 flow [2024-06-28 01:59:44,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:59:44,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:44,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:44,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:59:44,477 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:44,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:44,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1831226265, now seen corresponding path program 3 times [2024-06-28 01:59:44,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:44,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701905739] [2024-06-28 01:59:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:44,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:47,414 INFO 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 01:59:47,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:47,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701905739] [2024-06-28 01:59:47,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701905739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:47,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:47,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605489633] [2024-06-28 01:59:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:47,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:47,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:47,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:47,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:47,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:47,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 346 transitions, 4405 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:59:47,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:47,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:47,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:50,208 INFO L124 PetriNetUnfolderBase]: 7239/11226 cut-off events. [2024-06-28 01:59:50,208 INFO L125 PetriNetUnfolderBase]: For 177067/177067 co-relation queries the response was YES. [2024-06-28 01:59:50,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62783 conditions, 11226 events. 7239/11226 cut-off events. For 177067/177067 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 72255 event pairs, 1336 based on Foata normal form. 4/11227 useless extension candidates. Maximal degree in co-relation 62675. Up to 9801 conditions per place. [2024-06-28 01:59:50,336 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 325 selfloop transitions, 96 changer transitions 0/428 dead transitions. [2024-06-28 01:59:50,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 428 transitions, 5762 flow [2024-06-28 01:59:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:59:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:59:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 262 transitions. [2024-06-28 01:59:50,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067698259187621 [2024-06-28 01:59:50,338 INFO L175 Difference]: Start difference. First operand has 228 places, 346 transitions, 4405 flow. Second operand 11 states and 262 transitions. [2024-06-28 01:59:50,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 428 transitions, 5762 flow [2024-06-28 01:59:50,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 428 transitions, 5720 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-28 01:59:50,871 INFO L231 Difference]: Finished difference. Result has 238 places, 350 transitions, 4613 flow [2024-06-28 01:59:50,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4613, PETRI_PLACES=238, PETRI_TRANSITIONS=350} [2024-06-28 01:59:50,872 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 187 predicate places. [2024-06-28 01:59:50,872 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 350 transitions, 4613 flow [2024-06-28 01:59:50,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:59:50,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:50,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:50,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:59:50,872 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:50,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1281220733, now seen corresponding path program 4 times [2024-06-28 01:59:50,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:50,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436920292] [2024-06-28 01:59:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:50,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436920292] [2024-06-28 01:59:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436920292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:53,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:53,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:53,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529694467] [2024-06-28 01:59:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:53,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:53,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:53,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:59:53,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 350 transitions, 4613 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:59:53,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:53,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:59:53,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:56,759 INFO L124 PetriNetUnfolderBase]: 7243/11230 cut-off events. [2024-06-28 01:59:56,760 INFO L125 PetriNetUnfolderBase]: For 183494/183503 co-relation queries the response was YES. [2024-06-28 01:59:56,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63720 conditions, 11230 events. 7243/11230 cut-off events. For 183494/183503 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 72243 event pairs, 1412 based on Foata normal form. 4/11223 useless extension candidates. Maximal degree in co-relation 63609. Up to 9647 conditions per place. [2024-06-28 01:59:56,868 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 323 selfloop transitions, 83 changer transitions 0/413 dead transitions. [2024-06-28 01:59:56,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 413 transitions, 5872 flow [2024-06-28 01:59:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:59:56,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 01:59:56,869 INFO L175 Difference]: Start difference. First operand has 238 places, 350 transitions, 4613 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:59:56,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 413 transitions, 5872 flow [2024-06-28 01:59:57,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 413 transitions, 5747 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:57,411 INFO L231 Difference]: Finished difference. Result has 243 places, 366 transitions, 4873 flow [2024-06-28 01:59:57,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4488, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4873, PETRI_PLACES=243, PETRI_TRANSITIONS=366} [2024-06-28 01:59:57,411 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 192 predicate places. [2024-06-28 01:59:57,411 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 366 transitions, 4873 flow [2024-06-28 01:59:57,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:59:57,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:57,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:57,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:59:57,412 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:57,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:57,412 INFO L85 PathProgramCache]: Analyzing trace with hash 7993891, now seen corresponding path program 5 times [2024-06-28 01:59:57,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:57,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520700637] [2024-06-28 01:59:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:57,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:00,381 INFO 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 02:00:00,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520700637] [2024-06-28 02:00:00,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520700637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:00,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:00,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:00,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985436618] [2024-06-28 02:00:00,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:00,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:00,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:00,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:00,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 366 transitions, 4873 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:00,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:00,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:00,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:02,954 INFO L124 PetriNetUnfolderBase]: 7283/11294 cut-off events. [2024-06-28 02:00:02,954 INFO L125 PetriNetUnfolderBase]: For 193066/193066 co-relation queries the response was YES. [2024-06-28 02:00:03,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65498 conditions, 11294 events. 7283/11294 cut-off events. For 193066/193066 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 72755 event pairs, 1362 based on Foata normal form. 4/11295 useless extension candidates. Maximal degree in co-relation 65384. Up to 9844 conditions per place. [2024-06-28 02:00:03,085 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 316 selfloop transitions, 94 changer transitions 0/417 dead transitions. [2024-06-28 02:00:03,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 417 transitions, 6005 flow [2024-06-28 02:00:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:00:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:00:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:00:03,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 02:00:03,086 INFO L175 Difference]: Start difference. First operand has 243 places, 366 transitions, 4873 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:00:03,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 417 transitions, 6005 flow [2024-06-28 02:00:03,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 417 transitions, 5917 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 02:00:03,665 INFO L231 Difference]: Finished difference. Result has 248 places, 370 transitions, 5048 flow [2024-06-28 02:00:03,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4785, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5048, PETRI_PLACES=248, PETRI_TRANSITIONS=370} [2024-06-28 02:00:03,665 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 197 predicate places. [2024-06-28 02:00:03,665 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 370 transitions, 5048 flow [2024-06-28 02:00:03,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:03,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:03,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:03,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:00:03,666 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:03,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:03,666 INFO L85 PathProgramCache]: Analyzing trace with hash -112738919, now seen corresponding path program 6 times [2024-06-28 02:00:03,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:03,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073478962] [2024-06-28 02:00:03,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:03,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:06,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073478962] [2024-06-28 02:00:06,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073478962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:06,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:06,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:06,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640594484] [2024-06-28 02:00:06,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:06,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:06,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:06,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:06,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 370 transitions, 5048 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:06,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:06,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:06,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:09,493 INFO L124 PetriNetUnfolderBase]: 7277/11286 cut-off events. [2024-06-28 02:00:09,493 INFO L125 PetriNetUnfolderBase]: For 192584/192584 co-relation queries the response was YES. [2024-06-28 02:00:09,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65561 conditions, 11286 events. 7277/11286 cut-off events. For 192584/192584 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 72766 event pairs, 1346 based on Foata normal form. 2/11285 useless extension candidates. Maximal degree in co-relation 65445. Up to 9839 conditions per place. [2024-06-28 02:00:09,655 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 328 selfloop transitions, 102 changer transitions 0/437 dead transitions. [2024-06-28 02:00:09,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 437 transitions, 6151 flow [2024-06-28 02:00:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 02:00:09,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 02:00:09,656 INFO L175 Difference]: Start difference. First operand has 248 places, 370 transitions, 5048 flow. Second operand 9 states and 222 transitions. [2024-06-28 02:00:09,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 437 transitions, 6151 flow [2024-06-28 02:00:10,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 437 transitions, 5983 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:10,625 INFO L231 Difference]: Finished difference. Result has 252 places, 370 transitions, 5111 flow [2024-06-28 02:00:10,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4880, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5111, PETRI_PLACES=252, PETRI_TRANSITIONS=370} [2024-06-28 02:00:10,626 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 201 predicate places. [2024-06-28 02:00:10,626 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 370 transitions, 5111 flow [2024-06-28 02:00:10,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:10,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:10,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:10,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:00:10,626 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:10,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:10,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1093541553, now seen corresponding path program 1 times [2024-06-28 02:00:10,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:10,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641278367] [2024-06-28 02:00:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:10,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:13,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:13,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641278367] [2024-06-28 02:00:13,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641278367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:13,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:13,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:13,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022863968] [2024-06-28 02:00:13,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:13,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:13,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:13,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:13,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:13,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:13,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 370 transitions, 5111 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:13,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:13,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:13,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:16,587 INFO L124 PetriNetUnfolderBase]: 7313/11562 cut-off events. [2024-06-28 02:00:16,587 INFO L125 PetriNetUnfolderBase]: For 199533/199536 co-relation queries the response was YES. [2024-06-28 02:00:16,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66387 conditions, 11562 events. 7313/11562 cut-off events. For 199533/199536 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 76721 event pairs, 1835 based on Foata normal form. 4/11562 useless extension candidates. Maximal degree in co-relation 66271. Up to 10427 conditions per place. [2024-06-28 02:00:16,737 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 373 selfloop transitions, 36 changer transitions 0/416 dead transitions. [2024-06-28 02:00:16,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 416 transitions, 6285 flow [2024-06-28 02:00:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:00:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:00:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:00:16,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 02:00:16,739 INFO L175 Difference]: Start difference. First operand has 252 places, 370 transitions, 5111 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:00:16,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 416 transitions, 6285 flow [2024-06-28 02:00:17,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 416 transitions, 6037 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:00:17,334 INFO L231 Difference]: Finished difference. Result has 250 places, 378 transitions, 5088 flow [2024-06-28 02:00:17,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4869, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5088, PETRI_PLACES=250, PETRI_TRANSITIONS=378} [2024-06-28 02:00:17,335 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 199 predicate places. [2024-06-28 02:00:17,335 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 378 transitions, 5088 flow [2024-06-28 02:00:17,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:17,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:17,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:17,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:00:17,335 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:17,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:17,336 INFO L85 PathProgramCache]: Analyzing trace with hash -449030479, now seen corresponding path program 2 times [2024-06-28 02:00:17,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:17,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974496619] [2024-06-28 02:00:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:17,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:20,083 INFO 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 02:00:20,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:20,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974496619] [2024-06-28 02:00:20,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974496619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:20,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:20,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837191973] [2024-06-28 02:00:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:20,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:20,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:20,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:20,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 378 transitions, 5088 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:20,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:20,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:20,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:22,888 INFO L124 PetriNetUnfolderBase]: 7349/11620 cut-off events. [2024-06-28 02:00:22,889 INFO L125 PetriNetUnfolderBase]: For 200980/200983 co-relation queries the response was YES. [2024-06-28 02:00:22,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66895 conditions, 11620 events. 7349/11620 cut-off events. For 200980/200983 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 77208 event pairs, 1836 based on Foata normal form. 4/11620 useless extension candidates. Maximal degree in co-relation 66779. Up to 10492 conditions per place. [2024-06-28 02:00:23,160 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 375 selfloop transitions, 33 changer transitions 0/415 dead transitions. [2024-06-28 02:00:23,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 415 transitions, 6184 flow [2024-06-28 02:00:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 02:00:23,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 02:00:23,161 INFO L175 Difference]: Start difference. First operand has 250 places, 378 transitions, 5088 flow. Second operand 6 states and 147 transitions. [2024-06-28 02:00:23,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 415 transitions, 6184 flow [2024-06-28 02:00:23,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 415 transitions, 6067 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:23,683 INFO L231 Difference]: Finished difference. Result has 253 places, 382 transitions, 5118 flow [2024-06-28 02:00:23,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5118, PETRI_PLACES=253, PETRI_TRANSITIONS=382} [2024-06-28 02:00:23,684 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 202 predicate places. [2024-06-28 02:00:23,684 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 382 transitions, 5118 flow [2024-06-28 02:00:23,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:23,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:23,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:23,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:00:23,684 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:23,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:23,685 INFO L85 PathProgramCache]: Analyzing trace with hash -449024899, now seen corresponding path program 3 times [2024-06-28 02:00:23,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:23,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405496906] [2024-06-28 02:00:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:26,287 INFO 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 02:00:26,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:26,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405496906] [2024-06-28 02:00:26,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405496906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:26,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:26,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:26,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974532090] [2024-06-28 02:00:26,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:26,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:26,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:26,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:26,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 382 transitions, 5118 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:26,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:26,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:26,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:29,361 INFO L124 PetriNetUnfolderBase]: 7343/11612 cut-off events. [2024-06-28 02:00:29,361 INFO L125 PetriNetUnfolderBase]: For 202183/202186 co-relation queries the response was YES. [2024-06-28 02:00:29,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66760 conditions, 11612 events. 7343/11612 cut-off events. For 202183/202186 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 77088 event pairs, 1816 based on Foata normal form. 4/11612 useless extension candidates. Maximal degree in co-relation 66642. Up to 10487 conditions per place. [2024-06-28 02:00:29,499 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 382 selfloop transitions, 35 changer transitions 0/424 dead transitions. [2024-06-28 02:00:29,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 424 transitions, 6092 flow [2024-06-28 02:00:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:29,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:00:29,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-28 02:00:29,501 INFO L175 Difference]: Start difference. First operand has 253 places, 382 transitions, 5118 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:00:29,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 424 transitions, 6092 flow [2024-06-28 02:00:30,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 424 transitions, 5966 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:30,077 INFO L231 Difference]: Finished difference. Result has 257 places, 382 transitions, 5069 flow [2024-06-28 02:00:30,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4992, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5069, PETRI_PLACES=257, PETRI_TRANSITIONS=382} [2024-06-28 02:00:30,077 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 206 predicate places. [2024-06-28 02:00:30,078 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 382 transitions, 5069 flow [2024-06-28 02:00:30,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:30,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:30,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:30,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:00:30,078 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:30,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1110576993, now seen corresponding path program 1 times [2024-06-28 02:00:30,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:30,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435182327] [2024-06-28 02:00:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:30,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:33,631 INFO 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 02:00:33,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:33,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435182327] [2024-06-28 02:00:33,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435182327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:33,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:33,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:33,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686641066] [2024-06-28 02:00:33,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:33,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:33,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:33,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:33,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:33,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 382 transitions, 5069 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:33,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:33,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:33,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:37,041 INFO L124 PetriNetUnfolderBase]: 7392/11365 cut-off events. [2024-06-28 02:00:37,042 INFO L125 PetriNetUnfolderBase]: For 203850/203850 co-relation queries the response was YES. [2024-06-28 02:00:37,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66890 conditions, 11365 events. 7392/11365 cut-off events. For 203850/203850 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 72673 event pairs, 1296 based on Foata normal form. 1/11360 useless extension candidates. Maximal degree in co-relation 66771. Up to 10040 conditions per place. [2024-06-28 02:00:37,172 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 353 selfloop transitions, 94 changer transitions 0/454 dead transitions. [2024-06-28 02:00:37,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 454 transitions, 6595 flow [2024-06-28 02:00:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 02:00:37,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 02:00:37,173 INFO L175 Difference]: Start difference. First operand has 257 places, 382 transitions, 5069 flow. Second operand 8 states and 205 transitions. [2024-06-28 02:00:37,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 454 transitions, 6595 flow [2024-06-28 02:00:37,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 454 transitions, 6497 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:37,778 INFO L231 Difference]: Finished difference. Result has 259 places, 394 transitions, 5376 flow [2024-06-28 02:00:37,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4971, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5376, PETRI_PLACES=259, PETRI_TRANSITIONS=394} [2024-06-28 02:00:37,778 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 208 predicate places. [2024-06-28 02:00:37,779 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 394 transitions, 5376 flow [2024-06-28 02:00:37,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:37,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:37,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:37,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:00:37,779 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:37,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:37,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1110457023, now seen corresponding path program 2 times [2024-06-28 02:00:37,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:37,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927041639] [2024-06-28 02:00:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:37,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:41,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:41,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927041639] [2024-06-28 02:00:41,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927041639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:41,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:41,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:41,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825071304] [2024-06-28 02:00:41,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:41,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:41,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:41,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:41,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:41,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:41,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 394 transitions, 5376 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:41,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:41,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:41,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:45,125 INFO L124 PetriNetUnfolderBase]: 7478/11521 cut-off events. [2024-06-28 02:00:45,126 INFO L125 PetriNetUnfolderBase]: For 217212/217215 co-relation queries the response was YES. [2024-06-28 02:00:45,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69399 conditions, 11521 events. 7478/11521 cut-off events. For 217212/217215 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 73879 event pairs, 1308 based on Foata normal form. 3/11520 useless extension candidates. Maximal degree in co-relation 69278. Up to 10384 conditions per place. [2024-06-28 02:00:45,243 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 364 selfloop transitions, 90 changer transitions 0/461 dead transitions. [2024-06-28 02:00:45,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 461 transitions, 6742 flow [2024-06-28 02:00:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:00:45,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 02:00:45,245 INFO L175 Difference]: Start difference. First operand has 259 places, 394 transitions, 5376 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:00:45,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 461 transitions, 6742 flow [2024-06-28 02:00:45,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 461 transitions, 6653 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-28 02:00:45,842 INFO L231 Difference]: Finished difference. Result has 265 places, 406 transitions, 5685 flow [2024-06-28 02:00:45,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5302, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5685, PETRI_PLACES=265, PETRI_TRANSITIONS=406} [2024-06-28 02:00:45,843 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 214 predicate places. [2024-06-28 02:00:45,843 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 406 transitions, 5685 flow [2024-06-28 02:00:45,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:45,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:45,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:00:45,843 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:45,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:45,844 INFO L85 PathProgramCache]: Analyzing trace with hash -933325503, now seen corresponding path program 3 times [2024-06-28 02:00:45,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:45,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672442105] [2024-06-28 02:00:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:45,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:49,207 INFO 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 02:00:49,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:49,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672442105] [2024-06-28 02:00:49,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672442105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:49,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:49,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051135081] [2024-06-28 02:00:49,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:49,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:49,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:49,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:49,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:00:49,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 406 transitions, 5685 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:49,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:49,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:00:49,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:52,349 INFO L124 PetriNetUnfolderBase]: 7527/11606 cut-off events. [2024-06-28 02:00:52,349 INFO L125 PetriNetUnfolderBase]: For 226325/226328 co-relation queries the response was YES. [2024-06-28 02:00:52,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70471 conditions, 11606 events. 7527/11606 cut-off events. For 226325/226328 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 74545 event pairs, 1310 based on Foata normal form. 3/11605 useless extension candidates. Maximal degree in co-relation 70347. Up to 10391 conditions per place. [2024-06-28 02:00:52,703 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 365 selfloop transitions, 98 changer transitions 0/470 dead transitions. [2024-06-28 02:00:52,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 470 transitions, 7087 flow [2024-06-28 02:00:52,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:52,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 02:00:52,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 02:00:52,704 INFO L175 Difference]: Start difference. First operand has 265 places, 406 transitions, 5685 flow. Second operand 9 states and 214 transitions. [2024-06-28 02:00:52,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 470 transitions, 7087 flow [2024-06-28 02:00:53,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 470 transitions, 6897 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:53,426 INFO L231 Difference]: Finished difference. Result has 270 places, 412 transitions, 5819 flow [2024-06-28 02:00:53,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5495, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5819, PETRI_PLACES=270, PETRI_TRANSITIONS=412} [2024-06-28 02:00:53,426 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 219 predicate places. [2024-06-28 02:00:53,426 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 412 transitions, 5819 flow [2024-06-28 02:00:53,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:00:53,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:53,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:53,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:00:53,427 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:00:53,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash -933079239, now seen corresponding path program 1 times [2024-06-28 02:00:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:53,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209612328] [2024-06-28 02:00:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:53,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:57,102 INFO 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 02:00:57,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209612328] [2024-06-28 02:00:57,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209612328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:57,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:57,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:57,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517144992] [2024-06-28 02:00:57,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:57,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:57,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:57,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:57,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 02:00:57,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 412 transitions, 5819 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 02:00:57,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:57,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 02:00:57,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:00,045 INFO L124 PetriNetUnfolderBase]: 7269/11274 cut-off events. [2024-06-28 02:01:00,045 INFO L125 PetriNetUnfolderBase]: For 236446/236553 co-relation queries the response was YES. [2024-06-28 02:01:00,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68862 conditions, 11274 events. 7269/11274 cut-off events. For 236446/236553 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 73057 event pairs, 1235 based on Foata normal form. 72/11299 useless extension candidates. Maximal degree in co-relation 68736. Up to 9612 conditions per place. [2024-06-28 02:01:00,193 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 307 selfloop transitions, 126 changer transitions 0/471 dead transitions. [2024-06-28 02:01:00,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 471 transitions, 6945 flow [2024-06-28 02:01:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 02:01:00,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-28 02:01:00,195 INFO L175 Difference]: Start difference. First operand has 270 places, 412 transitions, 5819 flow. Second operand 9 states and 220 transitions. [2024-06-28 02:01:00,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 471 transitions, 6945 flow [2024-06-28 02:01:01,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 471 transitions, 6733 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:01,122 INFO L231 Difference]: Finished difference. Result has 274 places, 415 transitions, 5937 flow [2024-06-28 02:01:01,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5607, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5937, PETRI_PLACES=274, PETRI_TRANSITIONS=415} [2024-06-28 02:01:01,122 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 223 predicate places. [2024-06-28 02:01:01,123 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 415 transitions, 5937 flow [2024-06-28 02:01:01,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 02:01:01,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:01,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:01,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:01:01,123 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:01,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash 50815291, now seen corresponding path program 4 times [2024-06-28 02:01:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:01,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970290873] [2024-06-28 02:01:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:04,271 INFO 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 02:01:04,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:04,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970290873] [2024-06-28 02:01:04,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970290873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:04,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:04,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:04,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166449684] [2024-06-28 02:01:04,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:04,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:04,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:04,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:04,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:04,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:04,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 415 transitions, 5937 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:01:04,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:04,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:04,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:07,230 INFO L124 PetriNetUnfolderBase]: 7652/11776 cut-off events. [2024-06-28 02:01:07,230 INFO L125 PetriNetUnfolderBase]: For 250360/250360 co-relation queries the response was YES. [2024-06-28 02:01:07,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72938 conditions, 11776 events. 7652/11776 cut-off events. For 250360/250360 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 75829 event pairs, 1337 based on Foata normal form. 1/11771 useless extension candidates. Maximal degree in co-relation 72811. Up to 10318 conditions per place. [2024-06-28 02:01:07,378 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 340 selfloop transitions, 121 changer transitions 0/468 dead transitions. [2024-06-28 02:01:07,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 468 transitions, 7379 flow [2024-06-28 02:01:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 02:01:07,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-06-28 02:01:07,379 INFO L175 Difference]: Start difference. First operand has 274 places, 415 transitions, 5937 flow. Second operand 7 states and 179 transitions. [2024-06-28 02:01:07,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 468 transitions, 7379 flow [2024-06-28 02:01:08,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 468 transitions, 7083 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:08,414 INFO L231 Difference]: Finished difference. Result has 274 places, 421 transitions, 6001 flow [2024-06-28 02:01:08,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5641, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6001, PETRI_PLACES=274, PETRI_TRANSITIONS=421} [2024-06-28 02:01:08,415 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 223 predicate places. [2024-06-28 02:01:08,415 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 421 transitions, 6001 flow [2024-06-28 02:01:08,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:01:08,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:08,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:08,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:01:08,415 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:08,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:08,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1631782737, now seen corresponding path program 5 times [2024-06-28 02:01:08,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:08,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075687632] [2024-06-28 02:01:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:08,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:11,264 INFO 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 02:01:11,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:11,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075687632] [2024-06-28 02:01:11,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075687632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:11,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:11,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:11,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275718537] [2024-06-28 02:01:11,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:11,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:11,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:11,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:11,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:11,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 421 transitions, 6001 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:01:11,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:11,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:11,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:14,551 INFO L124 PetriNetUnfolderBase]: 7675/11848 cut-off events. [2024-06-28 02:01:14,551 INFO L125 PetriNetUnfolderBase]: For 256373/256416 co-relation queries the response was YES. [2024-06-28 02:01:14,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72954 conditions, 11848 events. 7675/11848 cut-off events. For 256373/256416 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 76549 event pairs, 1379 based on Foata normal form. 31/11866 useless extension candidates. Maximal degree in co-relation 72826. Up to 10342 conditions per place. [2024-06-28 02:01:14,680 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 344 selfloop transitions, 118 changer transitions 0/469 dead transitions. [2024-06-28 02:01:14,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 469 transitions, 7421 flow [2024-06-28 02:01:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 02:01:14,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-06-28 02:01:14,682 INFO L175 Difference]: Start difference. First operand has 274 places, 421 transitions, 6001 flow. Second operand 7 states and 174 transitions. [2024-06-28 02:01:14,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 469 transitions, 7421 flow [2024-06-28 02:01:15,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 469 transitions, 7242 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:15,463 INFO L231 Difference]: Finished difference. Result has 277 places, 424 transitions, 6128 flow [2024-06-28 02:01:15,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6128, PETRI_PLACES=277, PETRI_TRANSITIONS=424} [2024-06-28 02:01:15,464 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 226 predicate places. [2024-06-28 02:01:15,464 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 424 transitions, 6128 flow [2024-06-28 02:01:15,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:01:15,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:15,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:15,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:01:15,465 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:15,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:15,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1253701053, now seen corresponding path program 6 times [2024-06-28 02:01:15,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:15,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850524049] [2024-06-28 02:01:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:15,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850524049] [2024-06-28 02:01:18,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850524049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:18,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:18,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734730928] [2024-06-28 02:01:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:18,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:18,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 02:01:18,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 424 transitions, 6128 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:01:18,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:18,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 02:01:18,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:21,662 INFO L124 PetriNetUnfolderBase]: 7703/11890 cut-off events. [2024-06-28 02:01:21,662 INFO L125 PetriNetUnfolderBase]: For 261043/261086 co-relation queries the response was YES. [2024-06-28 02:01:21,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73279 conditions, 11890 events. 7703/11890 cut-off events. For 261043/261086 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 76805 event pairs, 1379 based on Foata normal form. 31/11908 useless extension candidates. Maximal degree in co-relation 73151. Up to 10370 conditions per place. [2024-06-28 02:01:21,797 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 339 selfloop transitions, 124 changer transitions 0/470 dead transitions. [2024-06-28 02:01:21,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 470 transitions, 7479 flow [2024-06-28 02:01:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:21,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:01:21,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-28 02:01:21,798 INFO L175 Difference]: Start difference. First operand has 277 places, 424 transitions, 6128 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:01:21,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 470 transitions, 7479 flow [2024-06-28 02:01:22,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 470 transitions, 7175 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:22,602 INFO L231 Difference]: Finished difference. Result has 281 places, 430 transitions, 6210 flow [2024-06-28 02:01:22,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5845, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6210, PETRI_PLACES=281, PETRI_TRANSITIONS=430} [2024-06-28 02:01:22,602 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 230 predicate places. [2024-06-28 02:01:22,603 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 430 transitions, 6210 flow [2024-06-28 02:01:22,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 02:01:22,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:22,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:22,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:01:22,603 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:01:22,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash 110433597, now seen corresponding path program 7 times [2024-06-28 02:01:22,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:22,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14896046] [2024-06-28 02:01:22,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:22,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat