./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe003_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe003_power.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/safe003_power.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe003_power.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 [2024-06-27 18:49:21,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:49:21,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:49:21,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:49:21,071 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:49:21,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:49:21,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:49:21,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:49:21,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:49:21,100 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:49:21,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:49:21,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:49:21,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:49:21,101 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:49:21,101 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:49:21,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:49:21,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:49:21,102 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:49:21,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:49:21,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:49:21,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:49:21,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:49:21,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:49:21,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:49:21,103 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:49:21,103 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:49:21,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:49:21,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:49:21,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:49:21,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:49:21,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:49:21,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:49:21,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:49:21,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:49:21,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:49:21,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:49:21,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:49:21,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:49:21,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:49:21,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:49:21,106 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:49:21,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:49:21,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:49:21,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:49:21,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:49:21,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:49:21,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:49:21,366 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:49:21,366 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:49:21,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_power.opt.i [2024-06-27 18:49:22,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:49:22,632 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:49:22,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_power.opt.i [2024-06-27 18:49:22,643 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfeeb4cb1/dc77bfa52ddf4461bdd639950886d1ba/FLAG84020e2eb [2024-06-27 18:49:22,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfeeb4cb1/dc77bfa52ddf4461bdd639950886d1ba [2024-06-27 18:49:22,657 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:49:22,657 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:49:22,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe003_power.opt.yml/witness.yml [2024-06-27 18:49:22,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:49:22,833 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:49:22,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:49:22,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:49:22,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:49:22,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:49:22" (1/2) ... [2024-06-27 18:49:22,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617d473f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:22, skipping insertion in model container [2024-06-27 18:49:22,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:49:22" (1/2) ... [2024-06-27 18:49:22,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@495e1b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:22, skipping insertion in model container [2024-06-27 18:49:22,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:49:22" (2/2) ... [2024-06-27 18:49:22,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617d473f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:22, skipping insertion in model container [2024-06-27 18:49:22,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:49:22" (2/2) ... [2024-06-27 18:49:22,842 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:49:22,929 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:49:22,930 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0) [2024-06-27 18:49:22,930 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0) [2024-06-27 18:49:22,930 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0) [2024-06-27 18:49:22,930 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:49:22,931 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-27 18:49:22,968 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:49:23,126 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/safe003_power.opt.i[951,964] [2024-06-27 18:49:23,289 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:49:23,296 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:49:23,328 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/safe003_power.opt.i[951,964] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:49:23,403 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:49:23,429 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:49:23,429 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23 WrapperNode [2024-06-27 18:49:23,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:49:23,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:49:23,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:49:23,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:49:23,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,480 INFO L138 Inliner]: procedures = 175, calls = 73, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 214 [2024-06-27 18:49:23,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:49:23,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:49:23,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:49:23,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:49:23,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,500 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,514 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [2, 30]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-06-27 18:49:23,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,542 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:49:23,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:49:23,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:49:23,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:49:23,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (1/1) ... [2024-06-27 18:49:23,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:49:23,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:49:23,572 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) [2024-06-27 18:49:23,582 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 [2024-06-27 18:49:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:49:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:49:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:49:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:49:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:49:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:49:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:49:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:49:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:49:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:49:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:49:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:49:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:49:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:49:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:49:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:49:23,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:49:23,618 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:49:23,759 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:49:23,761 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:49:24,199 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:49:24,200 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:49:24,471 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:49:24,471 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:49:24,471 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:49:24 BoogieIcfgContainer [2024-06-27 18:49:24,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:49:24,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:49:24,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:49:24,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:49:24,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:49:22" (1/4) ... [2024-06-27 18:49:24,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fb914e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:49:24, skipping insertion in model container [2024-06-27 18:49:24,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:49:22" (2/4) ... [2024-06-27 18:49:24,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fb914e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:49:24, skipping insertion in model container [2024-06-27 18:49:24,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:23" (3/4) ... [2024-06-27 18:49:24,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fb914e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:49:24, skipping insertion in model container [2024-06-27 18:49:24,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:49:24" (4/4) ... [2024-06-27 18:49:24,479 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_power.opt.i [2024-06-27 18:49:24,494 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:49:24,494 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:49:24,494 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:49:24,572 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:49:24,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:49:24,635 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 18:49:24,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:49:24,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 18:49:24,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:49:24,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 18:49:24,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:49:24,663 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;@42af6c12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:49:24,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:49:24,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:49:24,668 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:49:24,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:49:24,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:24,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:49:24,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:24,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash 762396259, now seen corresponding path program 1 times [2024-06-27 18:49:24,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:24,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926947552] [2024-06-27 18:49:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:26,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:26,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926947552] [2024-06-27 18:49:26,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926947552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:26,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:26,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:49:26,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808904969] [2024-06-27 18:49:26,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:26,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:49:26,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:49:26,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:49:26,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:49:26,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:26,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:26,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:49:26,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:27,385 INFO L124 PetriNetUnfolderBase]: 4309/6741 cut-off events. [2024-06-27 18:49:27,385 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-27 18:49:27,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13077 conditions, 6741 events. 4309/6741 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 40371 event pairs, 2999 based on Foata normal form. 168/6242 useless extension candidates. Maximal degree in co-relation 13065. Up to 6206 conditions per place. [2024-06-27 18:49:27,419 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 48 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-06-27 18:49:27,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 245 flow [2024-06-27 18:49:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:49:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:49:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 18:49:27,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-27 18:49:27,430 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 93 transitions. [2024-06-27 18:49:27,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 245 flow [2024-06-27 18:49:27,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:27,438 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-27 18:49:27,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-27 18:49:27,442 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:49:27,442 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-27 18:49:27,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:27,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:27,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-27 18:49:27,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:49:27,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:27,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2135476376, now seen corresponding path program 1 times [2024-06-27 18:49:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:27,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962179341] [2024-06-27 18:49:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:27,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:27,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962179341] [2024-06-27 18:49:27,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962179341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:27,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:27,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:49:27,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261240216] [2024-06-27 18:49:27,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:27,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:49:27,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:49:27,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:49:27,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 18:49:27,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:27,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:27,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 18:49:27,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:28,122 INFO L124 PetriNetUnfolderBase]: 1734/2898 cut-off events. [2024-06-27 18:49:28,123 INFO L125 PetriNetUnfolderBase]: For 361/376 co-relation queries the response was YES. [2024-06-27 18:49:28,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6021 conditions, 2898 events. 1734/2898 cut-off events. For 361/376 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19105 event pairs, 485 based on Foata normal form. 4/2740 useless extension candidates. Maximal degree in co-relation 6009. Up to 1794 conditions per place. [2024-06-27 18:49:28,135 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 52 selfloop transitions, 2 changer transitions 1/71 dead transitions. [2024-06-27 18:49:28,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 301 flow [2024-06-27 18:49:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:49:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:49:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-27 18:49:28,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-06-27 18:49:28,137 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 105 transitions. [2024-06-27 18:49:28,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 301 flow [2024-06-27 18:49:28,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:28,139 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 128 flow [2024-06-27 18:49:28,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 18:49:28,140 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:49:28,140 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 128 flow [2024-06-27 18:49:28,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:28,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:28,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:28,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:49:28,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:28,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:28,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1775258876, now seen corresponding path program 1 times [2024-06-27 18:49:28,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:28,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187374273] [2024-06-27 18:49:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:28,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:29,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187374273] [2024-06-27 18:49:29,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187374273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:29,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:29,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:49:29,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765173501] [2024-06-27 18:49:29,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:29,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:49:29,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:49:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:49:29,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:49:29,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:29,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:29,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:49:29,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:30,333 INFO L124 PetriNetUnfolderBase]: 5489/8503 cut-off events. [2024-06-27 18:49:30,334 INFO L125 PetriNetUnfolderBase]: For 1384/1384 co-relation queries the response was YES. [2024-06-27 18:49:30,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18434 conditions, 8503 events. 5489/8503 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 49792 event pairs, 3389 based on Foata normal form. 3/8287 useless extension candidates. Maximal degree in co-relation 18421. Up to 7810 conditions per place. [2024-06-27 18:49:30,376 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 64 selfloop transitions, 9 changer transitions 1/81 dead transitions. [2024-06-27 18:49:30,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 81 transitions, 364 flow [2024-06-27 18:49:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:49:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:49:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-06-27 18:49:30,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-06-27 18:49:30,378 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 128 flow. Second operand 4 states and 113 transitions. [2024-06-27 18:49:30,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 81 transitions, 364 flow [2024-06-27 18:49:30,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 358 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:49:30,381 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 196 flow [2024-06-27 18:49:30,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-06-27 18:49:30,382 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 18:49:30,382 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 196 flow [2024-06-27 18:49:30,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:30,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:30,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:30,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:49:30,383 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:30,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:30,383 INFO L85 PathProgramCache]: Analyzing trace with hash 760929360, now seen corresponding path program 1 times [2024-06-27 18:49:30,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:30,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671838365] [2024-06-27 18:49:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:30,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:31,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:31,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:31,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671838365] [2024-06-27 18:49:31,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671838365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:31,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:31,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:49:31,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873849691] [2024-06-27 18:49:31,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:31,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:49:31,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:31,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:49:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:49:31,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:49:31,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:31,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:31,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:49:31,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:32,760 INFO L124 PetriNetUnfolderBase]: 4946/7742 cut-off events. [2024-06-27 18:49:32,761 INFO L125 PetriNetUnfolderBase]: For 2605/2605 co-relation queries the response was YES. [2024-06-27 18:49:32,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17992 conditions, 7742 events. 4946/7742 cut-off events. For 2605/2605 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 45440 event pairs, 2742 based on Foata normal form. 3/7526 useless extension candidates. Maximal degree in co-relation 17977. Up to 7026 conditions per place. [2024-06-27 18:49:32,795 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 83 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2024-06-27 18:49:32,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 533 flow [2024-06-27 18:49:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:49:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:49:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-27 18:49:32,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-06-27 18:49:32,797 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 196 flow. Second operand 5 states and 137 transitions. [2024-06-27 18:49:32,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 533 flow [2024-06-27 18:49:32,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 527 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-27 18:49:32,801 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 320 flow [2024-06-27 18:49:32,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2024-06-27 18:49:32,801 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-27 18:49:32,802 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 320 flow [2024-06-27 18:49:32,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:32,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:32,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:32,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:49:32,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:32,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:32,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2113974849, now seen corresponding path program 1 times [2024-06-27 18:49:32,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028161796] [2024-06-27 18:49:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:32,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:34,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:34,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028161796] [2024-06-27 18:49:34,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028161796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:34,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:34,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:49:34,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296480444] [2024-06-27 18:49:34,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:34,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:49:34,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:49:34,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:49:34,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:49:34,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:34,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:34,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:49:34,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:35,384 INFO L124 PetriNetUnfolderBase]: 4943/7737 cut-off events. [2024-06-27 18:49:35,384 INFO L125 PetriNetUnfolderBase]: For 5696/5696 co-relation queries the response was YES. [2024-06-27 18:49:35,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19977 conditions, 7737 events. 4943/7737 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 45404 event pairs, 2339 based on Foata normal form. 3/7521 useless extension candidates. Maximal degree in co-relation 19957. Up to 6994 conditions per place. [2024-06-27 18:49:35,420 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 96 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2024-06-27 18:49:35,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 694 flow [2024-06-27 18:49:35,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 18:49:35,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 18:49:35,422 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 320 flow. Second operand 6 states and 164 transitions. [2024-06-27 18:49:35,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 694 flow [2024-06-27 18:49:35,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 673 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:35,428 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 376 flow [2024-06-27 18:49:35,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-27 18:49:35,428 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-27 18:49:35,429 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 376 flow [2024-06-27 18:49:35,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:35,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:35,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:35,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:49:35,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:35,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1108712079, now seen corresponding path program 1 times [2024-06-27 18:49:35,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:35,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027596767] [2024-06-27 18:49:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:35,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:37,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:37,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027596767] [2024-06-27 18:49:37,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027596767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:37,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:37,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:37,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520943020] [2024-06-27 18:49:37,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:37,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:37,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:37,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:37,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:37,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:49:37,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:37,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:37,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:49:37,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:38,476 INFO L124 PetriNetUnfolderBase]: 4934/7722 cut-off events. [2024-06-27 18:49:38,476 INFO L125 PetriNetUnfolderBase]: For 9003/9003 co-relation queries the response was YES. [2024-06-27 18:49:38,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21345 conditions, 7722 events. 4934/7722 cut-off events. For 9003/9003 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 45256 event pairs, 1879 based on Foata normal form. 6/7509 useless extension candidates. Maximal degree in co-relation 21323. Up to 6919 conditions per place. [2024-06-27 18:49:38,516 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 99 selfloop transitions, 34 changer transitions 0/140 dead transitions. [2024-06-27 18:49:38,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 874 flow [2024-06-27 18:49:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:38,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 18:49:38,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-27 18:49:38,517 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 376 flow. Second operand 7 states and 188 transitions. [2024-06-27 18:49:38,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 874 flow [2024-06-27 18:49:38,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 140 transitions, 829 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:49:38,524 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 520 flow [2024-06-27 18:49:38,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=520, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-27 18:49:38,525 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-27 18:49:38,525 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 520 flow [2024-06-27 18:49:38,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:38,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:38,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:38,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:49:38,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:38,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1088860492, now seen corresponding path program 1 times [2024-06-27 18:49:38,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:38,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633810364] [2024-06-27 18:49:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:40,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:40,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633810364] [2024-06-27 18:49:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633810364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:40,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:40,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:49:40,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144134837] [2024-06-27 18:49:40,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:40,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:49:40,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:40,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:49:40,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:49:40,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:49:40,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 520 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:40,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:40,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:49:40,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:41,397 INFO L124 PetriNetUnfolderBase]: 3848/6147 cut-off events. [2024-06-27 18:49:41,397 INFO L125 PetriNetUnfolderBase]: For 11242/11393 co-relation queries the response was YES. [2024-06-27 18:49:41,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18372 conditions, 6147 events. 3848/6147 cut-off events. For 11242/11393 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 37172 event pairs, 1481 based on Foata normal form. 8/5725 useless extension candidates. Maximal degree in co-relation 18346. Up to 5380 conditions per place. [2024-06-27 18:49:41,431 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 81 selfloop transitions, 15 changer transitions 0/113 dead transitions. [2024-06-27 18:49:41,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 820 flow [2024-06-27 18:49:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:49:41,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:49:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 18:49:41,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 18:49:41,433 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 520 flow. Second operand 5 states and 124 transitions. [2024-06-27 18:49:41,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 820 flow [2024-06-27 18:49:41,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 113 transitions, 734 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:41,442 INFO L231 Difference]: Finished difference. Result has 75 places, 86 transitions, 524 flow [2024-06-27 18:49:41,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=75, PETRI_TRANSITIONS=86} [2024-06-27 18:49:41,443 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 18:49:41,443 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 86 transitions, 524 flow [2024-06-27 18:49:41,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:41,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:41,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:41,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:49:41,444 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:41,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash -605060922, now seen corresponding path program 1 times [2024-06-27 18:49:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:41,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466335068] [2024-06-27 18:49:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:43,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:43,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466335068] [2024-06-27 18:49:43,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466335068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:43,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:43,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:43,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154780218] [2024-06-27 18:49:43,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:43,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:43,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:43,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:43,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:49:43,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 86 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:43,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:43,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:49:43,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:44,778 INFO L124 PetriNetUnfolderBase]: 4978/7619 cut-off events. [2024-06-27 18:49:44,779 INFO L125 PetriNetUnfolderBase]: For 16901/16919 co-relation queries the response was YES. [2024-06-27 18:49:44,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24352 conditions, 7619 events. 4978/7619 cut-off events. For 16901/16919 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 43032 event pairs, 1773 based on Foata normal form. 20/7474 useless extension candidates. Maximal degree in co-relation 24323. Up to 6866 conditions per place. [2024-06-27 18:49:44,817 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 109 selfloop transitions, 25 changer transitions 0/140 dead transitions. [2024-06-27 18:49:44,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 140 transitions, 1029 flow [2024-06-27 18:49:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:49:44,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 18:49:44,819 INFO L175 Difference]: Start difference. First operand has 75 places, 86 transitions, 524 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:49:44,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 140 transitions, 1029 flow [2024-06-27 18:49:44,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 140 transitions, 1023 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:44,830 INFO L231 Difference]: Finished difference. Result has 82 places, 99 transitions, 706 flow [2024-06-27 18:49:44,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=706, PETRI_PLACES=82, PETRI_TRANSITIONS=99} [2024-06-27 18:49:44,831 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-27 18:49:44,831 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 99 transitions, 706 flow [2024-06-27 18:49:44,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:44,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:44,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:44,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:49:44,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:44,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash 986278189, now seen corresponding path program 1 times [2024-06-27 18:49:44,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:44,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49664225] [2024-06-27 18:49:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:44,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:46,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:46,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49664225] [2024-06-27 18:49:46,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49664225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:46,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:46,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:46,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125545400] [2024-06-27 18:49:46,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:46,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:46,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:46,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:46,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:46,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:49:46,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 99 transitions, 706 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:46,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:46,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:49:46,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:47,904 INFO L124 PetriNetUnfolderBase]: 5132/7874 cut-off events. [2024-06-27 18:49:47,904 INFO L125 PetriNetUnfolderBase]: For 23515/23515 co-relation queries the response was YES. [2024-06-27 18:49:47,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27935 conditions, 7874 events. 5132/7874 cut-off events. For 23515/23515 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 44634 event pairs, 1816 based on Foata normal form. 2/7696 useless extension candidates. Maximal degree in co-relation 27901. Up to 6979 conditions per place. [2024-06-27 18:49:47,939 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 132 selfloop transitions, 43 changer transitions 0/181 dead transitions. [2024-06-27 18:49:47,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 181 transitions, 1492 flow [2024-06-27 18:49:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 18:49:47,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-27 18:49:47,941 INFO L175 Difference]: Start difference. First operand has 82 places, 99 transitions, 706 flow. Second operand 7 states and 179 transitions. [2024-06-27 18:49:47,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 181 transitions, 1492 flow [2024-06-27 18:49:47,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 181 transitions, 1464 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:47,962 INFO L231 Difference]: Finished difference. Result has 91 places, 122 transitions, 1041 flow [2024-06-27 18:49:47,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1041, PETRI_PLACES=91, PETRI_TRANSITIONS=122} [2024-06-27 18:49:47,963 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-27 18:49:47,963 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 122 transitions, 1041 flow [2024-06-27 18:49:47,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:47,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:47,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:47,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:49:47,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:47,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:47,964 INFO L85 PathProgramCache]: Analyzing trace with hash -966911675, now seen corresponding path program 2 times [2024-06-27 18:49:47,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:47,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316315958] [2024-06-27 18:49:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:47,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:49,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:49,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316315958] [2024-06-27 18:49:49,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316315958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:49,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:49,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:49,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201539367] [2024-06-27 18:49:49,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:49,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:49,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:49,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:49,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:49:49,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 122 transitions, 1041 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:49,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:49,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:49:49,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:51,679 INFO L124 PetriNetUnfolderBase]: 5190/7958 cut-off events. [2024-06-27 18:49:51,679 INFO L125 PetriNetUnfolderBase]: For 27330/27330 co-relation queries the response was YES. [2024-06-27 18:49:51,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29813 conditions, 7958 events. 5190/7958 cut-off events. For 27330/27330 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 45063 event pairs, 1840 based on Foata normal form. 3/7780 useless extension candidates. Maximal degree in co-relation 29773. Up to 7017 conditions per place. [2024-06-27 18:49:51,733 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 119 selfloop transitions, 49 changer transitions 0/174 dead transitions. [2024-06-27 18:49:51,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 174 transitions, 1647 flow [2024-06-27 18:49:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:49:51,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:49:51,735 INFO L175 Difference]: Start difference. First operand has 91 places, 122 transitions, 1041 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:49:51,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 174 transitions, 1647 flow [2024-06-27 18:49:51,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 1605 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:49:51,771 INFO L231 Difference]: Finished difference. Result has 95 places, 128 transitions, 1188 flow [2024-06-27 18:49:51,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1188, PETRI_PLACES=95, PETRI_TRANSITIONS=128} [2024-06-27 18:49:51,772 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-27 18:49:51,772 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 128 transitions, 1188 flow [2024-06-27 18:49:51,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:51,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:51,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:51,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:49:51,773 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:51,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash -202181061, now seen corresponding path program 3 times [2024-06-27 18:49:51,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:51,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13727120] [2024-06-27 18:49:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:51,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:53,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:53,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13727120] [2024-06-27 18:49:53,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13727120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:53,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:53,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:53,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377878193] [2024-06-27 18:49:53,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:53,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:53,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:53,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:53,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:53,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:49:53,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 128 transitions, 1188 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:53,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:53,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:49:53,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:55,177 INFO L124 PetriNetUnfolderBase]: 5160/7899 cut-off events. [2024-06-27 18:49:55,177 INFO L125 PetriNetUnfolderBase]: For 30688/30706 co-relation queries the response was YES. [2024-06-27 18:49:55,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29905 conditions, 7899 events. 5160/7899 cut-off events. For 30688/30706 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 44623 event pairs, 1800 based on Foata normal form. 21/7745 useless extension candidates. Maximal degree in co-relation 29863. Up to 6991 conditions per place. [2024-06-27 18:49:55,223 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 116 selfloop transitions, 46 changer transitions 0/168 dead transitions. [2024-06-27 18:49:55,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 168 transitions, 1656 flow [2024-06-27 18:49:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:49:55,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 18:49:55,225 INFO L175 Difference]: Start difference. First operand has 95 places, 128 transitions, 1188 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:49:55,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 168 transitions, 1656 flow [2024-06-27 18:49:55,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 168 transitions, 1584 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:49:55,275 INFO L231 Difference]: Finished difference. Result has 97 places, 128 transitions, 1222 flow [2024-06-27 18:49:55,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1222, PETRI_PLACES=97, PETRI_TRANSITIONS=128} [2024-06-27 18:49:55,276 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-27 18:49:55,276 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 128 transitions, 1222 flow [2024-06-27 18:49:55,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:55,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:55,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:55,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:49:55,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:55,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:55,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1375519439, now seen corresponding path program 1 times [2024-06-27 18:49:55,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:55,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587199409] [2024-06-27 18:49:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:55,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:57,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:57,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587199409] [2024-06-27 18:49:57,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587199409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:57,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:57,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:49:57,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001365420] [2024-06-27 18:49:57,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:57,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:49:57,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:57,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:49:57,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:49:57,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:49:57,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 128 transitions, 1222 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:57,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:57,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:49:57,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:59,099 INFO L124 PetriNetUnfolderBase]: 5276/8241 cut-off events. [2024-06-27 18:49:59,100 INFO L125 PetriNetUnfolderBase]: For 32407/32407 co-relation queries the response was YES. [2024-06-27 18:49:59,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30872 conditions, 8241 events. 5276/8241 cut-off events. For 32407/32407 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 48314 event pairs, 1909 based on Foata normal form. 2/8009 useless extension candidates. Maximal degree in co-relation 30830. Up to 7155 conditions per place. [2024-06-27 18:49:59,149 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 164 selfloop transitions, 45 changer transitions 0/215 dead transitions. [2024-06-27 18:49:59,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 215 transitions, 2226 flow [2024-06-27 18:49:59,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:49:59,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:49:59,151 INFO L175 Difference]: Start difference. First operand has 97 places, 128 transitions, 1222 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:49:59,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 215 transitions, 2226 flow [2024-06-27 18:49:59,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 215 transitions, 2154 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:59,192 INFO L231 Difference]: Finished difference. Result has 104 places, 160 transitions, 1726 flow [2024-06-27 18:49:59,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1726, PETRI_PLACES=104, PETRI_TRANSITIONS=160} [2024-06-27 18:49:59,193 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-27 18:49:59,193 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 160 transitions, 1726 flow [2024-06-27 18:49:59,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:59,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:59,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:59,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:49:59,194 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:59,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:59,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1849820307, now seen corresponding path program 2 times [2024-06-27 18:49:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:59,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990032777] [2024-06-27 18:49:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:01,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:01,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990032777] [2024-06-27 18:50:01,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990032777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:01,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:01,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:01,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722448425] [2024-06-27 18:50:01,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:01,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:01,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:01,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:01,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:01,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:01,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 160 transitions, 1726 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:01,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:01,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:01,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:03,226 INFO L124 PetriNetUnfolderBase]: 6134/9449 cut-off events. [2024-06-27 18:50:03,226 INFO L125 PetriNetUnfolderBase]: For 49009/49015 co-relation queries the response was YES. [2024-06-27 18:50:03,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39717 conditions, 9449 events. 6134/9449 cut-off events. For 49009/49015 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 55471 event pairs, 1911 based on Foata normal form. 2/9215 useless extension candidates. Maximal degree in co-relation 39671. Up to 7456 conditions per place. [2024-06-27 18:50:03,285 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 154 selfloop transitions, 95 changer transitions 0/255 dead transitions. [2024-06-27 18:50:03,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 255 transitions, 2749 flow [2024-06-27 18:50:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:03,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:50:03,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:50:03,286 INFO L175 Difference]: Start difference. First operand has 104 places, 160 transitions, 1726 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:50:03,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 255 transitions, 2749 flow [2024-06-27 18:50:03,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 255 transitions, 2685 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-06-27 18:50:03,364 INFO L231 Difference]: Finished difference. Result has 112 places, 182 transitions, 2140 flow [2024-06-27 18:50:03,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2140, PETRI_PLACES=112, PETRI_TRANSITIONS=182} [2024-06-27 18:50:03,366 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-27 18:50:03,366 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 182 transitions, 2140 flow [2024-06-27 18:50:03,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:03,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:03,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:03,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:50:03,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:03,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1469738355, now seen corresponding path program 3 times [2024-06-27 18:50:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822653548] [2024-06-27 18:50:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:05,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:05,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822653548] [2024-06-27 18:50:05,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822653548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:05,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:05,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189986901] [2024-06-27 18:50:05,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:05,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:05,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:05,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:05,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 182 transitions, 2140 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:05,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:05,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:05,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:07,263 INFO L124 PetriNetUnfolderBase]: 6119/9535 cut-off events. [2024-06-27 18:50:07,263 INFO L125 PetriNetUnfolderBase]: For 62801/62825 co-relation queries the response was YES. [2024-06-27 18:50:07,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45209 conditions, 9535 events. 6119/9535 cut-off events. For 62801/62825 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 56808 event pairs, 2109 based on Foata normal form. 22/9284 useless extension candidates. Maximal degree in co-relation 45159. Up to 8431 conditions per place. [2024-06-27 18:50:07,339 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 186 selfloop transitions, 41 changer transitions 0/233 dead transitions. [2024-06-27 18:50:07,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 233 transitions, 2822 flow [2024-06-27 18:50:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:50:07,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:50:07,341 INFO L175 Difference]: Start difference. First operand has 112 places, 182 transitions, 2140 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:50:07,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 233 transitions, 2822 flow [2024-06-27 18:50:07,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 233 transitions, 2677 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:07,451 INFO L231 Difference]: Finished difference. Result has 115 places, 185 transitions, 2137 flow [2024-06-27 18:50:07,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2137, PETRI_PLACES=115, PETRI_TRANSITIONS=185} [2024-06-27 18:50:07,452 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-27 18:50:07,452 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 185 transitions, 2137 flow [2024-06-27 18:50:07,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:07,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:07,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:07,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:50:07,453 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:07,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1642889851, now seen corresponding path program 1 times [2024-06-27 18:50:07,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:07,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346750721] [2024-06-27 18:50:07,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:07,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:10,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:10,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346750721] [2024-06-27 18:50:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346750721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:10,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:10,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317135905] [2024-06-27 18:50:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:10,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:10,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:10,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 185 transitions, 2137 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:10,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:10,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:10,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:12,210 INFO L124 PetriNetUnfolderBase]: 6161/9579 cut-off events. [2024-06-27 18:50:12,211 INFO L125 PetriNetUnfolderBase]: For 63362/63386 co-relation queries the response was YES. [2024-06-27 18:50:12,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45374 conditions, 9579 events. 6161/9579 cut-off events. For 63362/63386 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 56949 event pairs, 1909 based on Foata normal form. 24/9336 useless extension candidates. Maximal degree in co-relation 45322. Up to 8303 conditions per place. [2024-06-27 18:50:12,285 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 163 selfloop transitions, 71 changer transitions 0/240 dead transitions. [2024-06-27 18:50:12,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 240 transitions, 2855 flow [2024-06-27 18:50:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:50:12,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 18:50:12,286 INFO L175 Difference]: Start difference. First operand has 115 places, 185 transitions, 2137 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:50:12,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 240 transitions, 2855 flow [2024-06-27 18:50:12,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 240 transitions, 2781 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:12,499 INFO L231 Difference]: Finished difference. Result has 120 places, 188 transitions, 2253 flow [2024-06-27 18:50:12,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2253, PETRI_PLACES=120, PETRI_TRANSITIONS=188} [2024-06-27 18:50:12,500 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-27 18:50:12,500 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 188 transitions, 2253 flow [2024-06-27 18:50:12,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:12,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:12,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:12,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:50:12,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:12,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:12,501 INFO L85 PathProgramCache]: Analyzing trace with hash 308482180, now seen corresponding path program 1 times [2024-06-27 18:50:12,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:12,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855534732] [2024-06-27 18:50:12,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:12,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:15,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855534732] [2024-06-27 18:50:15,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855534732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:15,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:15,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:15,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65897189] [2024-06-27 18:50:15,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:15,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:15,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:15,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:15,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:15,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:15,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 188 transitions, 2253 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:15,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:15,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:15,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:17,001 INFO L124 PetriNetUnfolderBase]: 6233/9710 cut-off events. [2024-06-27 18:50:17,001 INFO L125 PetriNetUnfolderBase]: For 70471/70471 co-relation queries the response was YES. [2024-06-27 18:50:17,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47137 conditions, 9710 events. 6233/9710 cut-off events. For 70471/70471 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 58015 event pairs, 2042 based on Foata normal form. 2/9438 useless extension candidates. Maximal degree in co-relation 47083. Up to 8698 conditions per place. [2024-06-27 18:50:17,082 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 221 selfloop transitions, 35 changer transitions 0/262 dead transitions. [2024-06-27 18:50:17,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 262 transitions, 3130 flow [2024-06-27 18:50:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:50:17,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-27 18:50:17,084 INFO L175 Difference]: Start difference. First operand has 120 places, 188 transitions, 2253 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:50:17,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 262 transitions, 3130 flow [2024-06-27 18:50:17,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 262 transitions, 2980 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:17,203 INFO L231 Difference]: Finished difference. Result has 124 places, 195 transitions, 2291 flow [2024-06-27 18:50:17,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2291, PETRI_PLACES=124, PETRI_TRANSITIONS=195} [2024-06-27 18:50:17,204 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-27 18:50:17,204 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 195 transitions, 2291 flow [2024-06-27 18:50:17,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:17,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:17,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:17,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:50:17,205 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:17,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1513571545, now seen corresponding path program 1 times [2024-06-27 18:50:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639527324] [2024-06-27 18:50:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:17,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:19,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:19,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639527324] [2024-06-27 18:50:19,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639527324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:19,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:19,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692304824] [2024-06-27 18:50:19,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:19,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:19,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:19,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:19,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 195 transitions, 2291 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 18:50:19,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:19,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:19,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:21,003 INFO L124 PetriNetUnfolderBase]: 6295/9789 cut-off events. [2024-06-27 18:50:21,003 INFO L125 PetriNetUnfolderBase]: For 78943/78967 co-relation queries the response was YES. [2024-06-27 18:50:21,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48665 conditions, 9789 events. 6295/9789 cut-off events. For 78943/78967 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 58363 event pairs, 1953 based on Foata normal form. 20/9534 useless extension candidates. Maximal degree in co-relation 48609. Up to 8817 conditions per place. [2024-06-27 18:50:21,088 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 216 selfloop transitions, 27 changer transitions 0/249 dead transitions. [2024-06-27 18:50:21,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 249 transitions, 3004 flow [2024-06-27 18:50:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:50:21,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 18:50:21,090 INFO L175 Difference]: Start difference. First operand has 124 places, 195 transitions, 2291 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:50:21,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 249 transitions, 3004 flow [2024-06-27 18:50:21,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 249 transitions, 2924 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:21,264 INFO L231 Difference]: Finished difference. Result has 126 places, 198 transitions, 2315 flow [2024-06-27 18:50:21,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2315, PETRI_PLACES=126, PETRI_TRANSITIONS=198} [2024-06-27 18:50:21,265 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2024-06-27 18:50:21,265 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 198 transitions, 2315 flow [2024-06-27 18:50:21,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 18:50:21,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:21,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:21,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:50:21,266 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:21,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:21,266 INFO L85 PathProgramCache]: Analyzing trace with hash 308572390, now seen corresponding path program 2 times [2024-06-27 18:50:21,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:21,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459548405] [2024-06-27 18:50:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459548405] [2024-06-27 18:50:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459548405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:23,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:23,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:23,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626334970] [2024-06-27 18:50:23,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:23,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:23,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:23,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:23,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 198 transitions, 2315 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:23,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:23,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:23,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:26,112 INFO L124 PetriNetUnfolderBase]: 6290/9783 cut-off events. [2024-06-27 18:50:26,112 INFO L125 PetriNetUnfolderBase]: For 79961/79961 co-relation queries the response was YES. [2024-06-27 18:50:26,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49488 conditions, 9783 events. 6290/9783 cut-off events. For 79961/79961 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 58315 event pairs, 2003 based on Foata normal form. 2/9513 useless extension candidates. Maximal degree in co-relation 49432. Up to 8833 conditions per place. [2024-06-27 18:50:26,179 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 227 selfloop transitions, 28 changer transitions 0/261 dead transitions. [2024-06-27 18:50:26,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 261 transitions, 3060 flow [2024-06-27 18:50:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:50:26,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-27 18:50:26,180 INFO L175 Difference]: Start difference. First operand has 126 places, 198 transitions, 2315 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:50:26,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 261 transitions, 3060 flow [2024-06-27 18:50:26,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 261 transitions, 2984 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:26,316 INFO L231 Difference]: Finished difference. Result has 129 places, 200 transitions, 2329 flow [2024-06-27 18:50:26,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2329, PETRI_PLACES=129, PETRI_TRANSITIONS=200} [2024-06-27 18:50:26,316 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-27 18:50:26,316 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 200 transitions, 2329 flow [2024-06-27 18:50:26,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:26,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:26,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:26,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:50:26,317 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:26,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1489119297, now seen corresponding path program 2 times [2024-06-27 18:50:26,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:26,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348024109] [2024-06-27 18:50:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:26,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:27,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:27,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348024109] [2024-06-27 18:50:27,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348024109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:27,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:27,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:27,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106966759] [2024-06-27 18:50:27,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:27,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:27,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:27,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:27,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 200 transitions, 2329 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 18:50:27,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:27,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:27,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:29,999 INFO L124 PetriNetUnfolderBase]: 6371/9906 cut-off events. [2024-06-27 18:50:29,999 INFO L125 PetriNetUnfolderBase]: For 85229/85253 co-relation queries the response was YES. [2024-06-27 18:50:30,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50274 conditions, 9906 events. 6371/9906 cut-off events. For 85229/85253 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 59134 event pairs, 2012 based on Foata normal form. 22/9649 useless extension candidates. Maximal degree in co-relation 50217. Up to 8618 conditions per place. [2024-06-27 18:50:30,100 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 209 selfloop transitions, 50 changer transitions 0/265 dead transitions. [2024-06-27 18:50:30,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 265 transitions, 3264 flow [2024-06-27 18:50:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:50:30,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 18:50:30,102 INFO L175 Difference]: Start difference. First operand has 129 places, 200 transitions, 2329 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:50:30,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 265 transitions, 3264 flow [2024-06-27 18:50:30,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 265 transitions, 3210 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 18:50:30,375 INFO L231 Difference]: Finished difference. Result has 130 places, 210 transitions, 2529 flow [2024-06-27 18:50:30,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2529, PETRI_PLACES=130, PETRI_TRANSITIONS=210} [2024-06-27 18:50:30,375 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-27 18:50:30,375 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 210 transitions, 2529 flow [2024-06-27 18:50:30,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 18:50:30,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:30,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:30,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:50:30,376 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:30,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:30,376 INFO L85 PathProgramCache]: Analyzing trace with hash 312291460, now seen corresponding path program 3 times [2024-06-27 18:50:30,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:30,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250381571] [2024-06-27 18:50:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:30,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:32,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250381571] [2024-06-27 18:50:32,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250381571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:32,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:32,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:32,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454279913] [2024-06-27 18:50:32,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:32,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:32,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:32,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:32,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:32,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 210 transitions, 2529 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:32,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:32,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:32,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:34,678 INFO L124 PetriNetUnfolderBase]: 6441/10010 cut-off events. [2024-06-27 18:50:34,678 INFO L125 PetriNetUnfolderBase]: For 95882/95888 co-relation queries the response was YES. [2024-06-27 18:50:34,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52676 conditions, 10010 events. 6441/10010 cut-off events. For 95882/95888 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 59855 event pairs, 2028 based on Foata normal form. 6/9735 useless extension candidates. Maximal degree in co-relation 52618. Up to 8859 conditions per place. [2024-06-27 18:50:34,763 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 229 selfloop transitions, 77 changer transitions 0/312 dead transitions. [2024-06-27 18:50:34,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 312 transitions, 3869 flow [2024-06-27 18:50:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:50:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:50:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 18:50:34,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-27 18:50:34,765 INFO L175 Difference]: Start difference. First operand has 130 places, 210 transitions, 2529 flow. Second operand 9 states and 211 transitions. [2024-06-27 18:50:34,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 312 transitions, 3869 flow [2024-06-27 18:50:34,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 312 transitions, 3775 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:34,967 INFO L231 Difference]: Finished difference. Result has 137 places, 247 transitions, 3168 flow [2024-06-27 18:50:34,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3168, PETRI_PLACES=137, PETRI_TRANSITIONS=247} [2024-06-27 18:50:34,967 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-27 18:50:34,968 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 247 transitions, 3168 flow [2024-06-27 18:50:34,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:34,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:34,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:34,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:50:34,968 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:34,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:34,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1598982685, now seen corresponding path program 3 times [2024-06-27 18:50:34,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:34,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326656057] [2024-06-27 18:50:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:34,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:36,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:36,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326656057] [2024-06-27 18:50:36,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326656057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:36,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:36,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630152661] [2024-06-27 18:50:36,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:36,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:36,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:36,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:36,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:36,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 247 transitions, 3168 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 18:50:36,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:36,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:36,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:38,869 INFO L124 PetriNetUnfolderBase]: 6431/9996 cut-off events. [2024-06-27 18:50:38,869 INFO L125 PetriNetUnfolderBase]: For 109522/109546 co-relation queries the response was YES. [2024-06-27 18:50:38,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55683 conditions, 9996 events. 6431/9996 cut-off events. For 109522/109546 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 59771 event pairs, 2015 based on Foata normal form. 20/9734 useless extension candidates. Maximal degree in co-relation 55622. Up to 8899 conditions per place. [2024-06-27 18:50:38,950 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 246 selfloop transitions, 43 changer transitions 0/295 dead transitions. [2024-06-27 18:50:38,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 295 transitions, 3938 flow [2024-06-27 18:50:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:50:38,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-27 18:50:38,952 INFO L175 Difference]: Start difference. First operand has 137 places, 247 transitions, 3168 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:50:38,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 295 transitions, 3938 flow [2024-06-27 18:50:39,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 295 transitions, 3749 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:39,147 INFO L231 Difference]: Finished difference. Result has 141 places, 249 transitions, 3120 flow [2024-06-27 18:50:39,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3120, PETRI_PLACES=141, PETRI_TRANSITIONS=249} [2024-06-27 18:50:39,147 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-27 18:50:39,147 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 249 transitions, 3120 flow [2024-06-27 18:50:39,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 18:50:39,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:39,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:39,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:50:39,148 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:39,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash 601436714, now seen corresponding path program 4 times [2024-06-27 18:50:39,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:39,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383734695] [2024-06-27 18:50:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:39,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383734695] [2024-06-27 18:50:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383734695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:41,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:41,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:41,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316435456] [2024-06-27 18:50:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:41,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:41,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:41,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 249 transitions, 3120 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:41,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:41,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:41,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:44,008 INFO L124 PetriNetUnfolderBase]: 7011/10840 cut-off events. [2024-06-27 18:50:44,008 INFO L125 PetriNetUnfolderBase]: For 121302/121326 co-relation queries the response was YES. [2024-06-27 18:50:44,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61567 conditions, 10840 events. 7011/10840 cut-off events. For 121302/121326 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 65392 event pairs, 1815 based on Foata normal form. 22/10571 useless extension candidates. Maximal degree in co-relation 61503. Up to 8323 conditions per place. [2024-06-27 18:50:44,102 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 250 selfloop transitions, 154 changer transitions 0/410 dead transitions. [2024-06-27 18:50:44,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 410 transitions, 5300 flow [2024-06-27 18:50:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:50:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:50:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-27 18:50:44,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:50:44,103 INFO L175 Difference]: Start difference. First operand has 141 places, 249 transitions, 3120 flow. Second operand 10 states and 260 transitions. [2024-06-27 18:50:44,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 410 transitions, 5300 flow [2024-06-27 18:50:44,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 410 transitions, 5246 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:44,347 INFO L231 Difference]: Finished difference. Result has 150 places, 317 transitions, 4425 flow [2024-06-27 18:50:44,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4425, PETRI_PLACES=150, PETRI_TRANSITIONS=317} [2024-06-27 18:50:44,348 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-06-27 18:50:44,348 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 317 transitions, 4425 flow [2024-06-27 18:50:44,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:44,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:44,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:44,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:50:44,349 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:44,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash 972954608, now seen corresponding path program 1 times [2024-06-27 18:50:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:44,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352732417] [2024-06-27 18:50:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:44,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:46,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352732417] [2024-06-27 18:50:46,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352732417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:46,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:46,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589057199] [2024-06-27 18:50:46,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:46,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:46,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:46,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:46,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:46,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:46,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 317 transitions, 4425 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:50:46,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:46,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:46,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:49,430 INFO L124 PetriNetUnfolderBase]: 7414/11608 cut-off events. [2024-06-27 18:50:49,430 INFO L125 PetriNetUnfolderBase]: For 166535/166541 co-relation queries the response was YES. [2024-06-27 18:50:49,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73863 conditions, 11608 events. 7414/11608 cut-off events. For 166535/166541 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 71966 event pairs, 1657 based on Foata normal form. 4/11269 useless extension candidates. Maximal degree in co-relation 73796. Up to 9173 conditions per place. [2024-06-27 18:50:49,540 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 269 selfloop transitions, 167 changer transitions 0/442 dead transitions. [2024-06-27 18:50:49,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 442 transitions, 6458 flow [2024-06-27 18:50:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:50:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:50:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-27 18:50:49,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 18:50:49,542 INFO L175 Difference]: Start difference. First operand has 150 places, 317 transitions, 4425 flow. Second operand 9 states and 240 transitions. [2024-06-27 18:50:49,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 442 transitions, 6458 flow [2024-06-27 18:50:49,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 442 transitions, 6068 flow, removed 126 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:49,982 INFO L231 Difference]: Finished difference. Result has 157 places, 340 transitions, 5006 flow [2024-06-27 18:50:49,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5006, PETRI_PLACES=157, PETRI_TRANSITIONS=340} [2024-06-27 18:50:49,983 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-27 18:50:49,983 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 340 transitions, 5006 flow [2024-06-27 18:50:49,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:50:49,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:49,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:49,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:50:49,984 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:49,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:49,984 INFO L85 PathProgramCache]: Analyzing trace with hash 963851758, now seen corresponding path program 1 times [2024-06-27 18:50:49,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:49,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866508789] [2024-06-27 18:50:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:49,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:52,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866508789] [2024-06-27 18:50:52,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866508789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:52,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:52,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:52,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398654969] [2024-06-27 18:50:52,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:52,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:52,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:52,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:52,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:52,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 340 transitions, 5006 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:52,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:52,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:52,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:55,085 INFO L124 PetriNetUnfolderBase]: 7569/11780 cut-off events. [2024-06-27 18:50:55,086 INFO L125 PetriNetUnfolderBase]: For 187943/187988 co-relation queries the response was YES. [2024-06-27 18:50:55,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77296 conditions, 11780 events. 7569/11780 cut-off events. For 187943/187988 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 72515 event pairs, 1995 based on Foata normal form. 30/11472 useless extension candidates. Maximal degree in co-relation 77225. Up to 9530 conditions per place. [2024-06-27 18:50:55,185 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 266 selfloop transitions, 175 changer transitions 0/447 dead transitions. [2024-06-27 18:50:55,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 447 transitions, 6953 flow [2024-06-27 18:50:55,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:55,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 18:50:55,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-27 18:50:55,186 INFO L175 Difference]: Start difference. First operand has 157 places, 340 transitions, 5006 flow. Second operand 8 states and 206 transitions. [2024-06-27 18:50:55,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 447 transitions, 6953 flow [2024-06-27 18:50:55,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 447 transitions, 6742 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:55,713 INFO L231 Difference]: Finished difference. Result has 165 places, 362 transitions, 5786 flow [2024-06-27 18:50:55,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5786, PETRI_PLACES=165, PETRI_TRANSITIONS=362} [2024-06-27 18:50:55,714 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-06-27 18:50:55,714 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 362 transitions, 5786 flow [2024-06-27 18:50:55,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:55,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:55,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:55,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:50:55,714 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:55,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:55,715 INFO L85 PathProgramCache]: Analyzing trace with hash 973015058, now seen corresponding path program 2 times [2024-06-27 18:50:55,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:55,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019972287] [2024-06-27 18:50:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:55,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:57,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:57,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019972287] [2024-06-27 18:50:57,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019972287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:57,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:57,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:57,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296953628] [2024-06-27 18:50:57,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:57,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:57,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:57,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:57,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:57,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:50:57,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 362 transitions, 5786 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:50:57,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:57,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:50:57,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:00,993 INFO L124 PetriNetUnfolderBase]: 7619/11904 cut-off events. [2024-06-27 18:51:00,993 INFO L125 PetriNetUnfolderBase]: For 198963/198969 co-relation queries the response was YES. [2024-06-27 18:51:01,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80064 conditions, 11904 events. 7619/11904 cut-off events. For 198963/198969 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 73721 event pairs, 1978 based on Foata normal form. 4/11563 useless extension candidates. Maximal degree in co-relation 79988. Up to 9969 conditions per place. [2024-06-27 18:51:01,104 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 283 selfloop transitions, 169 changer transitions 0/458 dead transitions. [2024-06-27 18:51:01,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 458 transitions, 7300 flow [2024-06-27 18:51:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:01,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:51:01,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-27 18:51:01,106 INFO L175 Difference]: Start difference. First operand has 165 places, 362 transitions, 5786 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:51:01,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 458 transitions, 7300 flow [2024-06-27 18:51:01,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 458 transitions, 7177 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-27 18:51:01,705 INFO L231 Difference]: Finished difference. Result has 172 places, 364 transitions, 6049 flow [2024-06-27 18:51:01,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5663, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6049, PETRI_PLACES=172, PETRI_TRANSITIONS=364} [2024-06-27 18:51:01,706 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 118 predicate places. [2024-06-27 18:51:01,706 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 364 transitions, 6049 flow [2024-06-27 18:51:01,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:51:01,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:01,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:01,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:51:01,706 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:01,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash 966652918, now seen corresponding path program 2 times [2024-06-27 18:51:01,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:01,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850277393] [2024-06-27 18:51:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:04,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850277393] [2024-06-27 18:51:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850277393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:04,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:04,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361758824] [2024-06-27 18:51:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:04,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:51:04,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 364 transitions, 6049 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:04,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:04,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:51:04,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:07,368 INFO L124 PetriNetUnfolderBase]: 7717/12064 cut-off events. [2024-06-27 18:51:07,369 INFO L125 PetriNetUnfolderBase]: For 208286/208331 co-relation queries the response was YES. [2024-06-27 18:51:07,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81499 conditions, 12064 events. 7717/12064 cut-off events. For 208286/208331 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 75103 event pairs, 1922 based on Foata normal form. 34/11736 useless extension candidates. Maximal degree in co-relation 81421. Up to 10312 conditions per place. [2024-06-27 18:51:07,497 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 361 selfloop transitions, 90 changer transitions 0/457 dead transitions. [2024-06-27 18:51:07,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 457 transitions, 7679 flow [2024-06-27 18:51:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:51:07,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-27 18:51:07,498 INFO L175 Difference]: Start difference. First operand has 172 places, 364 transitions, 6049 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:51:07,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 457 transitions, 7679 flow [2024-06-27 18:51:08,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 457 transitions, 7317 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:51:08,263 INFO L231 Difference]: Finished difference. Result has 174 places, 380 transitions, 6136 flow [2024-06-27 18:51:08,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5687, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6136, PETRI_PLACES=174, PETRI_TRANSITIONS=380} [2024-06-27 18:51:08,263 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-27 18:51:08,263 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 380 transitions, 6136 flow [2024-06-27 18:51:08,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:08,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:08,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:08,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:51:08,264 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:08,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:08,264 INFO L85 PathProgramCache]: Analyzing trace with hash -138056408, now seen corresponding path program 3 times [2024-06-27 18:51:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:08,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695025130] [2024-06-27 18:51:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:08,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:11,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695025130] [2024-06-27 18:51:11,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695025130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:11,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:11,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:11,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431028407] [2024-06-27 18:51:11,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:11,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:11,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:11,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:11,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:11,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:51:11,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 380 transitions, 6136 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:51:11,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:11,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:51:11,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:13,904 INFO L124 PetriNetUnfolderBase]: 7722/12106 cut-off events. [2024-06-27 18:51:13,904 INFO L125 PetriNetUnfolderBase]: For 218338/218338 co-relation queries the response was YES. [2024-06-27 18:51:13,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82913 conditions, 12106 events. 7722/12106 cut-off events. For 218338/218338 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 75702 event pairs, 1965 based on Foata normal form. 4/11747 useless extension candidates. Maximal degree in co-relation 82833. Up to 10831 conditions per place. [2024-06-27 18:51:14,020 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 413 selfloop transitions, 36 changer transitions 0/455 dead transitions. [2024-06-27 18:51:14,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 455 transitions, 7375 flow [2024-06-27 18:51:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 18:51:14,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-27 18:51:14,021 INFO L175 Difference]: Start difference. First operand has 174 places, 380 transitions, 6136 flow. Second operand 9 states and 211 transitions. [2024-06-27 18:51:14,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 455 transitions, 7375 flow [2024-06-27 18:51:14,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 455 transitions, 7184 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-27 18:51:14,753 INFO L231 Difference]: Finished difference. Result has 181 places, 384 transitions, 6119 flow [2024-06-27 18:51:14,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5957, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6119, PETRI_PLACES=181, PETRI_TRANSITIONS=384} [2024-06-27 18:51:14,753 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 127 predicate places. [2024-06-27 18:51:14,753 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 384 transitions, 6119 flow [2024-06-27 18:51:14,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:51:14,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:14,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:14,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:51:14,754 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:14,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash 966648268, now seen corresponding path program 3 times [2024-06-27 18:51:14,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:14,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984393031] [2024-06-27 18:51:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:14,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:17,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:17,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984393031] [2024-06-27 18:51:17,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984393031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:17,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:17,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:17,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126321131] [2024-06-27 18:51:17,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:17,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:17,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:51:17,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 384 transitions, 6119 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:17,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:17,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:51:17,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:20,242 INFO L124 PetriNetUnfolderBase]: 7727/12105 cut-off events. [2024-06-27 18:51:20,242 INFO L125 PetriNetUnfolderBase]: For 226540/226585 co-relation queries the response was YES. [2024-06-27 18:51:20,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83177 conditions, 12105 events. 7727/12105 cut-off events. For 226540/226585 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 75706 event pairs, 1939 based on Foata normal form. 34/11768 useless extension candidates. Maximal degree in co-relation 83094. Up to 10322 conditions per place. [2024-06-27 18:51:20,352 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 364 selfloop transitions, 96 changer transitions 0/466 dead transitions. [2024-06-27 18:51:20,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 466 transitions, 7587 flow [2024-06-27 18:51:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:51:20,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 18:51:20,355 INFO L175 Difference]: Start difference. First operand has 181 places, 384 transitions, 6119 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:51:20,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 466 transitions, 7587 flow [2024-06-27 18:51:20,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 466 transitions, 7438 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 18:51:21,000 INFO L231 Difference]: Finished difference. Result has 186 places, 391 transitions, 6328 flow [2024-06-27 18:51:21,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5986, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6328, PETRI_PLACES=186, PETRI_TRANSITIONS=391} [2024-06-27 18:51:21,000 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-06-27 18:51:21,000 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 391 transitions, 6328 flow [2024-06-27 18:51:21,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:21,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:21,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:21,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:51:21,001 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:21,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash 725167538, now seen corresponding path program 1 times [2024-06-27 18:51:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:21,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579008271] [2024-06-27 18:51:21,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:21,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:23,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:23,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579008271] [2024-06-27 18:51:23,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579008271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:23,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:23,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:23,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039354640] [2024-06-27 18:51:23,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:23,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:23,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:23,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:51:23,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 391 transitions, 6328 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:23,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:23,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:51:23,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:26,333 INFO L124 PetriNetUnfolderBase]: 7735/12078 cut-off events. [2024-06-27 18:51:26,333 INFO L125 PetriNetUnfolderBase]: For 233763/233787 co-relation queries the response was YES. [2024-06-27 18:51:26,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84498 conditions, 12078 events. 7735/12078 cut-off events. For 233763/233787 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 74875 event pairs, 1982 based on Foata normal form. 18/11745 useless extension candidates. Maximal degree in co-relation 84412. Up to 10558 conditions per place. [2024-06-27 18:51:26,436 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 353 selfloop transitions, 92 changer transitions 0/451 dead transitions. [2024-06-27 18:51:26,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 451 transitions, 7634 flow [2024-06-27 18:51:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:51:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:51:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:51:26,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 18:51:26,437 INFO L175 Difference]: Start difference. First operand has 186 places, 391 transitions, 6328 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:51:26,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 451 transitions, 7634 flow [2024-06-27 18:51:27,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 451 transitions, 7403 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 18:51:27,130 INFO L231 Difference]: Finished difference. Result has 189 places, 396 transitions, 6424 flow [2024-06-27 18:51:27,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6097, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6424, PETRI_PLACES=189, PETRI_TRANSITIONS=396} [2024-06-27 18:51:27,131 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 135 predicate places. [2024-06-27 18:51:27,131 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 396 transitions, 6424 flow [2024-06-27 18:51:27,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:27,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:27,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:27,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:51:27,132 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:27,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1091280492, now seen corresponding path program 4 times [2024-06-27 18:51:27,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:27,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270187215] [2024-06-27 18:51:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:27,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:29,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:29,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270187215] [2024-06-27 18:51:29,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270187215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:29,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:29,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:29,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980159655] [2024-06-27 18:51:29,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:29,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:29,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:29,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:51:29,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 396 transitions, 6424 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:29,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:29,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:51:29,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:31,924 INFO L124 PetriNetUnfolderBase]: 7820/12176 cut-off events. [2024-06-27 18:51:31,924 INFO L125 PetriNetUnfolderBase]: For 243704/243728 co-relation queries the response was YES. [2024-06-27 18:51:32,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85724 conditions, 12176 events. 7820/12176 cut-off events. For 243704/243728 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 75313 event pairs, 2024 based on Foata normal form. 20/11851 useless extension candidates. Maximal degree in co-relation 85637. Up to 10715 conditions per place. [2024-06-27 18:51:32,062 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 398 selfloop transitions, 92 changer transitions 0/496 dead transitions. [2024-06-27 18:51:32,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 496 transitions, 8472 flow [2024-06-27 18:51:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:51:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:51:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-27 18:51:32,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-27 18:51:32,063 INFO L175 Difference]: Start difference. First operand has 189 places, 396 transitions, 6424 flow. Second operand 10 states and 214 transitions. [2024-06-27 18:51:32,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 496 transitions, 8472 flow [2024-06-27 18:51:32,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 496 transitions, 8146 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 18:51:32,901 INFO L231 Difference]: Finished difference. Result has 197 places, 441 transitions, 7263 flow [2024-06-27 18:51:32,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6192, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7263, PETRI_PLACES=197, PETRI_TRANSITIONS=441} [2024-06-27 18:51:32,902 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-27 18:51:32,902 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 441 transitions, 7263 flow [2024-06-27 18:51:32,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:32,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:32,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:32,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:51:32,902 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:32,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:32,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1091107512, now seen corresponding path program 5 times [2024-06-27 18:51:32,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:32,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439759906] [2024-06-27 18:51:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:32,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:35,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:35,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439759906] [2024-06-27 18:51:35,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439759906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:35,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:35,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099318723] [2024-06-27 18:51:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:35,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:35,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:35,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:35,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:35,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:51:35,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 441 transitions, 7263 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:35,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:35,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:51:35,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:38,140 INFO L124 PetriNetUnfolderBase]: 7892/12294 cut-off events. [2024-06-27 18:51:38,141 INFO L125 PetriNetUnfolderBase]: For 252400/252424 co-relation queries the response was YES. [2024-06-27 18:51:38,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87759 conditions, 12294 events. 7892/12294 cut-off events. For 252400/252424 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 76158 event pairs, 2005 based on Foata normal form. 20/11963 useless extension candidates. Maximal degree in co-relation 87668. Up to 10438 conditions per place. [2024-06-27 18:51:38,269 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 362 selfloop transitions, 159 changer transitions 0/527 dead transitions. [2024-06-27 18:51:38,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 527 transitions, 9103 flow [2024-06-27 18:51:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:51:38,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 18:51:38,270 INFO L175 Difference]: Start difference. First operand has 197 places, 441 transitions, 7263 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:51:38,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 527 transitions, 9103 flow [2024-06-27 18:51:39,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 527 transitions, 8892 flow, removed 99 selfloop flow, removed 2 redundant places. [2024-06-27 18:51:39,113 INFO L231 Difference]: Finished difference. Result has 205 places, 460 transitions, 7895 flow [2024-06-27 18:51:39,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7052, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7895, PETRI_PLACES=205, PETRI_TRANSITIONS=460} [2024-06-27 18:51:39,113 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-27 18:51:39,113 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 460 transitions, 7895 flow [2024-06-27 18:51:39,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:39,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:39,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:39,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:51:39,114 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:39,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:39,114 INFO L85 PathProgramCache]: Analyzing trace with hash -22765238, now seen corresponding path program 4 times [2024-06-27 18:51:39,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:39,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566851699] [2024-06-27 18:51:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:39,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:41,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:41,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566851699] [2024-06-27 18:51:41,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566851699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:41,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:41,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:41,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563140889] [2024-06-27 18:51:41,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:41,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:41,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:41,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:51:41,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 460 transitions, 7895 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:51:41,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:41,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:51:41,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:44,676 INFO L124 PetriNetUnfolderBase]: 7934/12341 cut-off events. [2024-06-27 18:51:44,677 INFO L125 PetriNetUnfolderBase]: For 268316/268322 co-relation queries the response was YES. [2024-06-27 18:51:44,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89592 conditions, 12341 events. 7934/12341 cut-off events. For 268316/268322 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 76277 event pairs, 2058 based on Foata normal form. 4/12000 useless extension candidates. Maximal degree in co-relation 89497. Up to 10924 conditions per place. [2024-06-27 18:51:44,821 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 442 selfloop transitions, 76 changer transitions 0/524 dead transitions. [2024-06-27 18:51:44,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 524 transitions, 9208 flow [2024-06-27 18:51:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:51:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:51:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-06-27 18:51:44,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2024-06-27 18:51:44,823 INFO L175 Difference]: Start difference. First operand has 205 places, 460 transitions, 7895 flow. Second operand 10 states and 221 transitions. [2024-06-27 18:51:44,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 524 transitions, 9208 flow [2024-06-27 18:51:45,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 524 transitions, 8838 flow, removed 140 selfloop flow, removed 3 redundant places. [2024-06-27 18:51:45,966 INFO L231 Difference]: Finished difference. Result has 212 places, 463 transitions, 7755 flow [2024-06-27 18:51:45,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7525, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7755, PETRI_PLACES=212, PETRI_TRANSITIONS=463} [2024-06-27 18:51:45,967 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 158 predicate places. [2024-06-27 18:51:45,967 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 463 transitions, 7755 flow [2024-06-27 18:51:45,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:51:45,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:45,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:51:45,968 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:45,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash 788518772, now seen corresponding path program 6 times [2024-06-27 18:51:45,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:45,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934253853] [2024-06-27 18:51:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:45,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934253853] [2024-06-27 18:51:47,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934253853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:47,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:47,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:47,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435095882] [2024-06-27 18:51:47,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:47,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:47,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:47,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:47,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:51:47,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 463 transitions, 7755 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:47,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:47,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:51:47,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:51,090 INFO L124 PetriNetUnfolderBase]: 7963/12400 cut-off events. [2024-06-27 18:51:51,090 INFO L125 PetriNetUnfolderBase]: For 273432/273456 co-relation queries the response was YES. [2024-06-27 18:51:51,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90252 conditions, 12400 events. 7963/12400 cut-off events. For 273432/273456 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 76806 event pairs, 2001 based on Foata normal form. 20/12067 useless extension candidates. Maximal degree in co-relation 90155. Up to 10489 conditions per place. [2024-06-27 18:51:51,241 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 411 selfloop transitions, 136 changer transitions 0/553 dead transitions. [2024-06-27 18:51:51,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 553 transitions, 9739 flow [2024-06-27 18:51:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 18:51:51,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-06-27 18:51:51,243 INFO L175 Difference]: Start difference. First operand has 212 places, 463 transitions, 7755 flow. Second operand 9 states and 203 transitions. [2024-06-27 18:51:51,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 553 transitions, 9739 flow [2024-06-27 18:51:52,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 553 transitions, 9546 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 18:51:52,271 INFO L231 Difference]: Finished difference. Result has 218 places, 490 transitions, 8440 flow [2024-06-27 18:51:52,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7568, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8440, PETRI_PLACES=218, PETRI_TRANSITIONS=490} [2024-06-27 18:51:52,271 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-27 18:51:52,271 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 490 transitions, 8440 flow [2024-06-27 18:51:52,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:52,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:52,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:52,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:51:52,272 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:52,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:52,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1444314740, now seen corresponding path program 5 times [2024-06-27 18:51:52,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:52,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520313262] [2024-06-27 18:51:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:52,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:54,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:54,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520313262] [2024-06-27 18:51:54,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520313262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:54,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:54,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:54,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784550143] [2024-06-27 18:51:54,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:54,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:54,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:54,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:51:54,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 490 transitions, 8440 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:51:54,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:54,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:51:54,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:57,977 INFO L124 PetriNetUnfolderBase]: 7980/12441 cut-off events. [2024-06-27 18:51:57,977 INFO L125 PetriNetUnfolderBase]: For 289081/289105 co-relation queries the response was YES. [2024-06-27 18:51:58,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91280 conditions, 12441 events. 7980/12441 cut-off events. For 289081/289105 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 77303 event pairs, 1950 based on Foata normal form. 40/12126 useless extension candidates. Maximal degree in co-relation 91180. Up to 10384 conditions per place. [2024-06-27 18:51:58,106 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 437 selfloop transitions, 127 changer transitions 0/570 dead transitions. [2024-06-27 18:51:58,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 570 transitions, 10126 flow [2024-06-27 18:51:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:51:58,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:51:58,107 INFO L175 Difference]: Start difference. First operand has 218 places, 490 transitions, 8440 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:51:58,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 570 transitions, 10126 flow [2024-06-27 18:51:59,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 570 transitions, 9886 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 18:51:59,037 INFO L231 Difference]: Finished difference. Result has 222 places, 493 transitions, 8543 flow [2024-06-27 18:51:59,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8204, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8543, PETRI_PLACES=222, PETRI_TRANSITIONS=493} [2024-06-27 18:51:59,037 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-27 18:51:59,038 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 493 transitions, 8543 flow [2024-06-27 18:51:59,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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) [2024-06-27 18:51:59,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:59,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:59,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:51:59,038 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:59,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1721356228, now seen corresponding path program 1 times [2024-06-27 18:51:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:59,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387003986] [2024-06-27 18:51:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:01,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:01,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387003986] [2024-06-27 18:52:01,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387003986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:01,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:01,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:01,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618176556] [2024-06-27 18:52:01,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:01,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:01,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:01,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:01,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:52:01,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 493 transitions, 8543 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:01,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:01,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:52:01,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:04,366 INFO L124 PetriNetUnfolderBase]: 8030/12521 cut-off events. [2024-06-27 18:52:04,366 INFO L125 PetriNetUnfolderBase]: For 293398/293422 co-relation queries the response was YES. [2024-06-27 18:52:04,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92254 conditions, 12521 events. 8030/12521 cut-off events. For 293398/293422 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 77981 event pairs, 2024 based on Foata normal form. 20/12184 useless extension candidates. Maximal degree in co-relation 92153. Up to 10990 conditions per place. [2024-06-27 18:52:04,524 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 443 selfloop transitions, 94 changer transitions 0/543 dead transitions. [2024-06-27 18:52:04,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 543 transitions, 9871 flow [2024-06-27 18:52:04,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:52:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:52:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:52:04,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-27 18:52:04,525 INFO L175 Difference]: Start difference. First operand has 222 places, 493 transitions, 8543 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:52:04,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 543 transitions, 9871 flow [2024-06-27 18:52:05,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 543 transitions, 9588 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 18:52:05,609 INFO L231 Difference]: Finished difference. Result has 222 places, 495 transitions, 8510 flow [2024-06-27 18:52:05,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8260, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8510, PETRI_PLACES=222, PETRI_TRANSITIONS=495} [2024-06-27 18:52:05,609 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-27 18:52:05,610 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 495 transitions, 8510 flow [2024-06-27 18:52:05,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:05,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:05,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:05,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:52:05,610 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:05,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:05,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1472005310, now seen corresponding path program 2 times [2024-06-27 18:52:05,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:05,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088980131] [2024-06-27 18:52:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:05,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:07,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:07,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088980131] [2024-06-27 18:52:07,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088980131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:07,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:07,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:52:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280668957] [2024-06-27 18:52:07,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:07,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:52:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:07,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:52:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:52:07,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:52:07,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 495 transitions, 8510 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:07,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:07,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:52:07,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:10,787 INFO L124 PetriNetUnfolderBase]: 8010/12496 cut-off events. [2024-06-27 18:52:10,788 INFO L125 PetriNetUnfolderBase]: For 295494/295518 co-relation queries the response was YES. [2024-06-27 18:52:10,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91705 conditions, 12496 events. 8010/12496 cut-off events. For 295494/295518 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 77815 event pairs, 2009 based on Foata normal form. 18/12152 useless extension candidates. Maximal degree in co-relation 91603. Up to 10860 conditions per place. [2024-06-27 18:52:10,947 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 413 selfloop transitions, 129 changer transitions 0/548 dead transitions. [2024-06-27 18:52:10,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 548 transitions, 9867 flow [2024-06-27 18:52:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:52:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:52:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:52:10,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:52:10,948 INFO L175 Difference]: Start difference. First operand has 222 places, 495 transitions, 8510 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:52:10,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 548 transitions, 9867 flow [2024-06-27 18:52:12,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 548 transitions, 9513 flow, removed 87 selfloop flow, removed 5 redundant places. [2024-06-27 18:52:12,070 INFO L231 Difference]: Finished difference. Result has 224 places, 497 transitions, 8515 flow [2024-06-27 18:52:12,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8156, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8515, PETRI_PLACES=224, PETRI_TRANSITIONS=497} [2024-06-27 18:52:12,070 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-27 18:52:12,070 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 497 transitions, 8515 flow [2024-06-27 18:52:12,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:12,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:12,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:12,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:52:12,071 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:12,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1730879428, now seen corresponding path program 2 times [2024-06-27 18:52:12,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:12,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294051593] [2024-06-27 18:52:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:12,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:14,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294051593] [2024-06-27 18:52:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294051593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:52:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944969033] [2024-06-27 18:52:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:14,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:52:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:52:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:52:14,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:52:14,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 497 transitions, 8515 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:14,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:14,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:52:14,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:17,464 INFO L124 PetriNetUnfolderBase]: 8002/12451 cut-off events. [2024-06-27 18:52:17,465 INFO L125 PetriNetUnfolderBase]: For 299907/299931 co-relation queries the response was YES. [2024-06-27 18:52:17,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91556 conditions, 12451 events. 8002/12451 cut-off events. For 299907/299931 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 77063 event pairs, 1809 based on Foata normal form. 20/12120 useless extension candidates. Maximal degree in co-relation 91453. Up to 10786 conditions per place. [2024-06-27 18:52:17,643 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 455 selfloop transitions, 87 changer transitions 0/548 dead transitions. [2024-06-27 18:52:17,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 548 transitions, 9887 flow [2024-06-27 18:52:17,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:52:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:52:17,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:52:17,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-27 18:52:17,645 INFO L175 Difference]: Start difference. First operand has 224 places, 497 transitions, 8515 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:52:17,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 548 transitions, 9887 flow [2024-06-27 18:52:18,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 548 transitions, 9556 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 18:52:18,683 INFO L231 Difference]: Finished difference. Result has 225 places, 499 transitions, 8419 flow [2024-06-27 18:52:18,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8184, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8419, PETRI_PLACES=225, PETRI_TRANSITIONS=499} [2024-06-27 18:52:18,683 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 171 predicate places. [2024-06-27 18:52:18,684 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 499 transitions, 8419 flow [2024-06-27 18:52:18,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:18,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:18,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:18,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:52:18,684 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:18,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash 96823970, now seen corresponding path program 1 times [2024-06-27 18:52:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:18,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926196027] [2024-06-27 18:52:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926196027] [2024-06-27 18:52:21,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926196027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:21,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:21,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361170121] [2024-06-27 18:52:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:21,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:21,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:52:21,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 499 transitions, 8419 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:21,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:21,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:52:21,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:24,609 INFO L124 PetriNetUnfolderBase]: 8440/13151 cut-off events. [2024-06-27 18:52:24,609 INFO L125 PetriNetUnfolderBase]: For 352343/352391 co-relation queries the response was YES. [2024-06-27 18:52:24,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98000 conditions, 13151 events. 8440/13151 cut-off events. For 352343/352391 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 82497 event pairs, 1709 based on Foata normal form. 44/12828 useless extension candidates. Maximal degree in co-relation 97897. Up to 9314 conditions per place. [2024-06-27 18:52:24,745 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 342 selfloop transitions, 250 changer transitions 0/598 dead transitions. [2024-06-27 18:52:24,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 598 transitions, 10406 flow [2024-06-27 18:52:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:52:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:52:24,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:52:24,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-27 18:52:24,747 INFO L175 Difference]: Start difference. First operand has 225 places, 499 transitions, 8419 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:52:24,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 598 transitions, 10406 flow [2024-06-27 18:52:25,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 598 transitions, 10205 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:52:25,689 INFO L231 Difference]: Finished difference. Result has 229 places, 501 transitions, 8802 flow [2024-06-27 18:52:25,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8218, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8802, PETRI_PLACES=229, PETRI_TRANSITIONS=501} [2024-06-27 18:52:25,690 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-27 18:52:25,690 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 501 transitions, 8802 flow [2024-06-27 18:52:25,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:25,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:25,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:25,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:52:25,690 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:25,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:25,691 INFO L85 PathProgramCache]: Analyzing trace with hash 98701640, now seen corresponding path program 2 times [2024-06-27 18:52:25,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:25,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920971190] [2024-06-27 18:52:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:25,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:28,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:28,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920971190] [2024-06-27 18:52:28,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920971190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:28,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:28,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:28,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843641188] [2024-06-27 18:52:28,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:28,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:28,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:28,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:28,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:28,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:52:28,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 501 transitions, 8802 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:28,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:28,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:52:28,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:31,863 INFO L124 PetriNetUnfolderBase]: 8666/13551 cut-off events. [2024-06-27 18:52:31,863 INFO L125 PetriNetUnfolderBase]: For 383413/383461 co-relation queries the response was YES. [2024-06-27 18:52:31,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102360 conditions, 13551 events. 8666/13551 cut-off events. For 383413/383461 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 85723 event pairs, 2228 based on Foata normal form. 48/13214 useless extension candidates. Maximal degree in co-relation 102256. Up to 10736 conditions per place. [2024-06-27 18:52:32,050 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 341 selfloop transitions, 246 changer transitions 0/593 dead transitions. [2024-06-27 18:52:32,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 593 transitions, 10585 flow [2024-06-27 18:52:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:52:32,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:52:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:52:32,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 18:52:32,051 INFO L175 Difference]: Start difference. First operand has 229 places, 501 transitions, 8802 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:52:32,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 593 transitions, 10585 flow [2024-06-27 18:52:33,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 593 transitions, 10238 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:52:33,426 INFO L231 Difference]: Finished difference. Result has 233 places, 502 transitions, 8996 flow [2024-06-27 18:52:33,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8459, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8996, PETRI_PLACES=233, PETRI_TRANSITIONS=502} [2024-06-27 18:52:33,427 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 179 predicate places. [2024-06-27 18:52:33,427 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 502 transitions, 8996 flow [2024-06-27 18:52:33,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:33,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:33,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:33,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:52:33,428 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:33,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash 98697920, now seen corresponding path program 3 times [2024-06-27 18:52:33,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:33,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923903423] [2024-06-27 18:52:33,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:33,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923903423] [2024-06-27 18:52:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923903423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:35,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432322986] [2024-06-27 18:52:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:35,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:35,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:52:35,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 502 transitions, 8996 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:35,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:35,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:52:35,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:39,787 INFO L124 PetriNetUnfolderBase]: 8842/13823 cut-off events. [2024-06-27 18:52:39,787 INFO L125 PetriNetUnfolderBase]: For 392184/392232 co-relation queries the response was YES. [2024-06-27 18:52:39,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105087 conditions, 13823 events. 8842/13823 cut-off events. For 392184/392232 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 87736 event pairs, 2195 based on Foata normal form. 44/13482 useless extension candidates. Maximal degree in co-relation 104981. Up to 10727 conditions per place. [2024-06-27 18:52:39,976 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 345 selfloop transitions, 247 changer transitions 0/598 dead transitions. [2024-06-27 18:52:39,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 598 transitions, 10825 flow [2024-06-27 18:52:39,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:52:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:52:39,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 18:52:39,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-27 18:52:39,977 INFO L175 Difference]: Start difference. First operand has 233 places, 502 transitions, 8996 flow. Second operand 9 states and 232 transitions. [2024-06-27 18:52:39,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 598 transitions, 10825 flow [2024-06-27 18:52:41,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 598 transitions, 10326 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:52:41,364 INFO L231 Difference]: Finished difference. Result has 235 places, 503 transitions, 9037 flow [2024-06-27 18:52:41,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8497, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9037, PETRI_PLACES=235, PETRI_TRANSITIONS=503} [2024-06-27 18:52:41,365 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-27 18:52:41,365 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 503 transitions, 9037 flow [2024-06-27 18:52:41,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:41,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:41,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:41,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:52:41,366 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:41,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:41,366 INFO L85 PathProgramCache]: Analyzing trace with hash 185393450, now seen corresponding path program 4 times [2024-06-27 18:52:41,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:41,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554882925] [2024-06-27 18:52:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:41,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:44,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554882925] [2024-06-27 18:52:44,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554882925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:44,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:44,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:44,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992204804] [2024-06-27 18:52:44,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:44,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:44,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:44,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:52:44,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 503 transitions, 9037 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:44,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:44,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:52:44,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:48,682 INFO L124 PetriNetUnfolderBase]: 9128/14312 cut-off events. [2024-06-27 18:52:48,682 INFO L125 PetriNetUnfolderBase]: For 419014/419038 co-relation queries the response was YES. [2024-06-27 18:52:48,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109181 conditions, 14312 events. 9128/14312 cut-off events. For 419014/419038 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 91659 event pairs, 2283 based on Foata normal form. 40/13956 useless extension candidates. Maximal degree in co-relation 109074. Up to 12401 conditions per place. [2024-06-27 18:52:49,057 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 534 selfloop transitions, 55 changer transitions 0/595 dead transitions. [2024-06-27 18:52:49,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 595 transitions, 10803 flow [2024-06-27 18:52:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:52:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:52:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-06-27 18:52:49,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-27 18:52:49,058 INFO L175 Difference]: Start difference. First operand has 235 places, 503 transitions, 9037 flow. Second operand 10 states and 238 transitions. [2024-06-27 18:52:49,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 595 transitions, 10803 flow [2024-06-27 18:52:50,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 595 transitions, 10295 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:52:50,236 INFO L231 Difference]: Finished difference. Result has 239 places, 507 transitions, 8793 flow [2024-06-27 18:52:50,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8529, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8793, PETRI_PLACES=239, PETRI_TRANSITIONS=507} [2024-06-27 18:52:50,237 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-27 18:52:50,237 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 507 transitions, 8793 flow [2024-06-27 18:52:50,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:50,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:50,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:50,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:52:50,237 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:50,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:50,238 INFO L85 PathProgramCache]: Analyzing trace with hash 185389730, now seen corresponding path program 5 times [2024-06-27 18:52:50,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:50,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519754056] [2024-06-27 18:52:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:50,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:53,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:53,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519754056] [2024-06-27 18:52:53,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519754056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:53,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:53,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:53,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944886209] [2024-06-27 18:52:53,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:53,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:53,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:53,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:53,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:53,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:52:53,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 507 transitions, 8793 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:53,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:53,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:52:53,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:57,553 INFO L124 PetriNetUnfolderBase]: 9214/14450 cut-off events. [2024-06-27 18:52:57,553 INFO L125 PetriNetUnfolderBase]: For 425026/425050 co-relation queries the response was YES. [2024-06-27 18:52:57,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110199 conditions, 14450 events. 9214/14450 cut-off events. For 425026/425050 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 92759 event pairs, 2260 based on Foata normal form. 32/14086 useless extension candidates. Maximal degree in co-relation 110090. Up to 12257 conditions per place. [2024-06-27 18:52:57,825 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 532 selfloop transitions, 53 changer transitions 0/591 dead transitions. [2024-06-27 18:52:57,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 591 transitions, 10507 flow [2024-06-27 18:52:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:52:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:52:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 18:52:57,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 18:52:57,827 INFO L175 Difference]: Start difference. First operand has 239 places, 507 transitions, 8793 flow. Second operand 9 states and 220 transitions. [2024-06-27 18:52:57,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 591 transitions, 10507 flow [2024-06-27 18:52:59,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 591 transitions, 10399 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:52:59,249 INFO L231 Difference]: Finished difference. Result has 242 places, 508 transitions, 8841 flow [2024-06-27 18:52:59,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8685, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8841, PETRI_PLACES=242, PETRI_TRANSITIONS=508} [2024-06-27 18:52:59,250 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-27 18:52:59,250 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 508 transitions, 8841 flow [2024-06-27 18:52:59,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:59,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:59,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:59,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:52:59,251 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:59,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash -529825844, now seen corresponding path program 1 times [2024-06-27 18:52:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:59,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656681671] [2024-06-27 18:52:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:59,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:01,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656681671] [2024-06-27 18:53:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656681671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:01,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:01,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593136124] [2024-06-27 18:53:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:01,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:01,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:53:01,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 508 transitions, 8841 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:01,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:01,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:53:01,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:05,744 INFO L124 PetriNetUnfolderBase]: 9311/14635 cut-off events. [2024-06-27 18:53:05,744 INFO L125 PetriNetUnfolderBase]: For 424768/424792 co-relation queries the response was YES. [2024-06-27 18:53:05,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111645 conditions, 14635 events. 9311/14635 cut-off events. For 424768/424792 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 94409 event pairs, 2191 based on Foata normal form. 20/14245 useless extension candidates. Maximal degree in co-relation 111534. Up to 12843 conditions per place. [2024-06-27 18:53:05,919 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 460 selfloop transitions, 112 changer transitions 0/578 dead transitions. [2024-06-27 18:53:05,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 578 transitions, 10454 flow [2024-06-27 18:53:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:53:05,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:53:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:53:05,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-27 18:53:05,920 INFO L175 Difference]: Start difference. First operand has 242 places, 508 transitions, 8841 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:53:05,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 578 transitions, 10454 flow [2024-06-27 18:53:07,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 578 transitions, 10328 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:53:07,251 INFO L231 Difference]: Finished difference. Result has 244 places, 518 transitions, 9173 flow [2024-06-27 18:53:07,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8715, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9173, PETRI_PLACES=244, PETRI_TRANSITIONS=518} [2024-06-27 18:53:07,252 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-27 18:53:07,252 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 518 transitions, 9173 flow [2024-06-27 18:53:07,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:07,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:07,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:07,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:53:07,253 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:07,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash -700002172, now seen corresponding path program 2 times [2024-06-27 18:53:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:07,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007885947] [2024-06-27 18:53:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:07,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:10,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:10,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007885947] [2024-06-27 18:53:10,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007885947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:10,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:10,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:10,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660192082] [2024-06-27 18:53:10,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:10,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:10,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:10,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:10,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:53:10,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 518 transitions, 9173 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:10,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:10,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:53:10,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:15,059 INFO L124 PetriNetUnfolderBase]: 9361/14718 cut-off events. [2024-06-27 18:53:15,060 INFO L125 PetriNetUnfolderBase]: For 439748/439772 co-relation queries the response was YES. [2024-06-27 18:53:15,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113407 conditions, 14718 events. 9361/14718 cut-off events. For 439748/439772 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 95119 event pairs, 2412 based on Foata normal form. 20/14325 useless extension candidates. Maximal degree in co-relation 113294. Up to 12922 conditions per place. [2024-06-27 18:53:15,253 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 447 selfloop transitions, 130 changer transitions 0/583 dead transitions. [2024-06-27 18:53:15,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 583 transitions, 10704 flow [2024-06-27 18:53:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:53:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:53:15,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:53:15,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-27 18:53:15,254 INFO L175 Difference]: Start difference. First operand has 244 places, 518 transitions, 9173 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:53:15,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 583 transitions, 10704 flow [2024-06-27 18:53:16,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 583 transitions, 10396 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 18:53:16,987 INFO L231 Difference]: Finished difference. Result has 247 places, 520 transitions, 9211 flow [2024-06-27 18:53:16,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8865, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9211, PETRI_PLACES=247, PETRI_TRANSITIONS=520} [2024-06-27 18:53:16,988 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 193 predicate places. [2024-06-27 18:53:16,988 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 520 transitions, 9211 flow [2024-06-27 18:53:16,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:16,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:16,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:16,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:53:16,988 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:16,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:16,989 INFO L85 PathProgramCache]: Analyzing trace with hash -535551296, now seen corresponding path program 6 times [2024-06-27 18:53:16,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:16,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871621154] [2024-06-27 18:53:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:16,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:19,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:19,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871621154] [2024-06-27 18:53:19,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871621154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:19,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:19,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:19,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073449302] [2024-06-27 18:53:19,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:19,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:19,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:19,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:19,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:19,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-27 18:53:19,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 520 transitions, 9211 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:19,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:19,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-27 18:53:19,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:23,909 INFO L124 PetriNetUnfolderBase]: 9560/15022 cut-off events. [2024-06-27 18:53:23,909 INFO L125 PetriNetUnfolderBase]: For 476017/476041 co-relation queries the response was YES. [2024-06-27 18:53:24,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116498 conditions, 15022 events. 9560/15022 cut-off events. For 476017/476041 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 97127 event pairs, 2397 based on Foata normal form. 32/14640 useless extension candidates. Maximal degree in co-relation 116384. Up to 12038 conditions per place. [2024-06-27 18:53:24,085 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 457 selfloop transitions, 144 changer transitions 0/607 dead transitions. [2024-06-27 18:53:24,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 607 transitions, 11223 flow [2024-06-27 18:53:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:53:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:53:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-06-27 18:53:24,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:53:24,086 INFO L175 Difference]: Start difference. First operand has 247 places, 520 transitions, 9211 flow. Second operand 10 states and 230 transitions. [2024-06-27 18:53:24,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 607 transitions, 11223 flow [2024-06-27 18:53:25,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 607 transitions, 10921 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 18:53:25,570 INFO L231 Difference]: Finished difference. Result has 252 places, 527 transitions, 9412 flow [2024-06-27 18:53:25,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8909, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9412, PETRI_PLACES=252, PETRI_TRANSITIONS=527} [2024-06-27 18:53:25,571 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-27 18:53:25,571 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 527 transitions, 9412 flow [2024-06-27 18:53:25,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:25,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:25,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:25,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:53:25,571 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:25,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:25,572 INFO L85 PathProgramCache]: Analyzing trace with hash -530041046, now seen corresponding path program 7 times [2024-06-27 18:53:25,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:25,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049169313] [2024-06-27 18:53:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:25,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat