./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe000_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/safe000_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/safe000_power.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe000_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 18:45:14,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:45:14,455 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:45:14,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:45:14,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:45:14,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:45:14,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:45:14,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:45:14,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:45:14,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:45:14,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:45:14,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:45:14,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:45:14,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:45:14,492 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:45:14,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:45:14,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:45:14,492 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:45:14,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:45:14,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:45:14,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:45:14,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:45:14,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:45:14,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:45:14,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:45:14,494 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:45:14,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:45:14,495 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:45:14,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:45:14,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:45:14,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:45:14,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:45:14,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:45:14,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:45:14,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:45:14,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:45:14,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:45:14,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:45:14,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:45:14,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:45:14,498 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:45:14,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:45:14,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:45:14,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:45:14,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:45:14,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:45:14,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:45:14,748 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:45:14,749 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:45:14,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe000_power.opt.yml/witness.yml [2024-06-27 18:45:14,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:45:14,984 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:45:14,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_power.opt.i [2024-06-27 18:45:16,098 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:45:16,287 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:45:16,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_power.opt.i [2024-06-27 18:45:16,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/044349feb/a32dcfdbc75a4f899a3b89805b0b12ea/FLAGb8222588b [2024-06-27 18:45:16,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/044349feb/a32dcfdbc75a4f899a3b89805b0b12ea [2024-06-27 18:45:16,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:45:16,311 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:45:16,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:45:16,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:45:16,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:45:16,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:45:14" (1/2) ... [2024-06-27 18:45:16,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277db66f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:45:16, skipping insertion in model container [2024-06-27 18:45:16,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:45:14" (1/2) ... [2024-06-27 18:45:16,319 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@883f06c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:45:16, skipping insertion in model container [2024-06-27 18:45:16,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:45:16" (2/2) ... [2024-06-27 18:45:16,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277db66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16, skipping insertion in model container [2024-06-27 18:45:16,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:45:16" (2/2) ... [2024-06-27 18:45:16,321 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:45:16,454 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:45:16,455 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ((((((((((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$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_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_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$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_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 || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:45:16,455 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! 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$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$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_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:45:16,456 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$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_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_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$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_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 || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:45:16,456 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:45:16,456 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-27 18:45:16,479 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:45:16,654 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/safe000_power.opt.i[951,964] [2024-06-27 18:45:16,852 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:45:16,860 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:45:16,889 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/safe000_power.opt.i[951,964] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:45:16,969 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:45:16,995 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:45:16,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16 WrapperNode [2024-06-27 18:45:16,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:45:16,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:45:16,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:45:16,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:45:17,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,037 INFO L138 Inliner]: procedures = 175, calls = 73, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 214 [2024-06-27 18:45:17,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:45:17,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:45:17,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:45:17,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:45:17,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,065 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 18:45:17,065 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:45:17,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:45:17,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:45:17,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:45:17,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (1/1) ... [2024-06-27 18:45:17,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:45:17,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:45:17,110 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 18:45:17,124 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 18:45:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:45:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:45:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:45:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:45:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:45:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:45:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:45:17,140 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:45:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:45:17,141 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:45:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:45:17,141 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:45:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:45:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:45:17,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:45:17,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:45:17,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:45:17,143 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 18:45:17,264 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:45:17,266 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:45:17,735 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:45:17,735 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:45:18,064 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:45:18,064 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:45:18,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:45:18 BoogieIcfgContainer [2024-06-27 18:45:18,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:45:18,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:45:18,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:45:18,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:45:18,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:45:14" (1/4) ... [2024-06-27 18:45:18,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cac3def and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:45:18, skipping insertion in model container [2024-06-27 18:45:18,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:45:16" (2/4) ... [2024-06-27 18:45:18,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cac3def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:45:18, skipping insertion in model container [2024-06-27 18:45:18,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:45:16" (3/4) ... [2024-06-27 18:45:18,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cac3def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:45:18, skipping insertion in model container [2024-06-27 18:45:18,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:45:18" (4/4) ... [2024-06-27 18:45:18,073 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_power.opt.i [2024-06-27 18:45:18,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:45:18,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:45:18,087 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:45:18,143 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:45:18,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:45:18,201 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 18:45:18,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:45:18,206 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 18:45:18,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:45:18,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 18:45:18,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:45:18,220 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;@7de15200, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:45:18,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:45:18,223 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:45:18,223 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:45:18,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:45:18,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:18,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:45:18,224 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 18:45:18,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash 762396259, now seen corresponding path program 1 times [2024-06-27 18:45:18,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:18,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801107404] [2024-06-27 18:45:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:18,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:20,007 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 18:45:20,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:20,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801107404] [2024-06-27 18:45:20,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801107404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:45:20,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556708162] [2024-06-27 18:45:20,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:20,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:45:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:20,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:45:20,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:45:20,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 18:45:20,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 18:45:20,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:20,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 18:45:20,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:20,854 INFO L124 PetriNetUnfolderBase]: 2462/4167 cut-off events. [2024-06-27 18:45:20,855 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 18:45:20,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7844 conditions, 4167 events. 2462/4167 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27318 event pairs, 1393 based on Foata normal form. 100/3807 useless extension candidates. Maximal degree in co-relation 7832. Up to 3596 conditions per place. [2024-06-27 18:45:20,878 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 44 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-06-27 18:45:20,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 239 flow [2024-06-27 18:45:20,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:45:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:45:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-27 18:45:20,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-27 18:45:20,891 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 99 transitions. [2024-06-27 18:45:20,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 239 flow [2024-06-27 18:45:20,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:45:20,895 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 138 flow [2024-06-27 18:45:20,897 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=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-27 18:45:20,899 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:45:20,899 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 138 flow [2024-06-27 18:45:20,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 18:45:20,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:20,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-27 18:45:20,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:45:20,900 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 18:45:20,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:20,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2135476376, now seen corresponding path program 1 times [2024-06-27 18:45:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:20,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507741309] [2024-06-27 18:45:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:20,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:20,964 INFO 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 18:45:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:20,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507741309] [2024-06-27 18:45:20,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507741309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:20,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:20,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:45:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907704815] [2024-06-27 18:45:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:20,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:45:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:45:20,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:45:20,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-27 18:45:20,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 138 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 18:45:20,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:20,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-27 18:45:20,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:21,482 INFO L124 PetriNetUnfolderBase]: 1430/2513 cut-off events. [2024-06-27 18:45:21,483 INFO L125 PetriNetUnfolderBase]: For 424/436 co-relation queries the response was YES. [2024-06-27 18:45:21,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5285 conditions, 2513 events. 1430/2513 cut-off events. For 424/436 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16093 event pairs, 902 based on Foata normal form. 0/2323 useless extension candidates. Maximal degree in co-relation 5273. Up to 1700 conditions per place. [2024-06-27 18:45:21,492 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 52 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2024-06-27 18:45:21,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 297 flow [2024-06-27 18:45:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:45:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:45:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 18:45:21,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-06-27 18:45:21,496 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 138 flow. Second operand 3 states and 104 transitions. [2024-06-27 18:45:21,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 297 flow [2024-06-27 18:45:21,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:45:21,499 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 130 flow [2024-06-27 18:45:21,501 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 18:45:21,502 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:45:21,502 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 130 flow [2024-06-27 18:45:21,502 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 18:45:21,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:21,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:21,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:45:21,507 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 18:45:21,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:21,509 INFO L85 PathProgramCache]: Analyzing trace with hash 760929360, now seen corresponding path program 1 times [2024-06-27 18:45:21,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:21,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557841899] [2024-06-27 18:45:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:21,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:23,147 INFO 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 18:45:23,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:23,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557841899] [2024-06-27 18:45:23,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557841899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:23,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:23,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:45:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071177351] [2024-06-27 18:45:23,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:23,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:45:23,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:23,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:45:23,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:45:23,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:45:23,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:23,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:23,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:45:23,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:23,903 INFO L124 PetriNetUnfolderBase]: 2456/4123 cut-off events. [2024-06-27 18:45:23,903 INFO L125 PetriNetUnfolderBase]: For 974/1002 co-relation queries the response was YES. [2024-06-27 18:45:23,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8934 conditions, 4123 events. 2456/4123 cut-off events. For 974/1002 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 25742 event pairs, 1201 based on Foata normal form. 10/4024 useless extension candidates. Maximal degree in co-relation 8921. Up to 3535 conditions per place. [2024-06-27 18:45:23,918 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 60 selfloop transitions, 9 changer transitions 1/81 dead transitions. [2024-06-27 18:45:23,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 81 transitions, 360 flow [2024-06-27 18:45:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:45:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:45:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-27 18:45:23,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-06-27 18:45:23,920 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 130 flow. Second operand 4 states and 125 transitions. [2024-06-27 18:45:23,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 81 transitions, 360 flow [2024-06-27 18:45:23,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:45:23,922 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 200 flow [2024-06-27 18:45:23,922 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-06-27 18:45:23,923 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 18:45:23,923 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 200 flow [2024-06-27 18:45:23,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:23,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:23,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:23,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:45:23,924 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 18:45:23,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash -921726877, now seen corresponding path program 1 times [2024-06-27 18:45:23,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:23,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733744174] [2024-06-27 18:45:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:23,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:26,021 INFO 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 18:45:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:26,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733744174] [2024-06-27 18:45:26,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733744174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:26,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:26,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:45:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621122664] [2024-06-27 18:45:26,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:26,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:45:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:45:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:45:26,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:45:26,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:26,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:26,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:45:26,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:26,904 INFO L124 PetriNetUnfolderBase]: 2212/3778 cut-off events. [2024-06-27 18:45:26,905 INFO L125 PetriNetUnfolderBase]: For 1679/1759 co-relation queries the response was YES. [2024-06-27 18:45:26,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8964 conditions, 3778 events. 2212/3778 cut-off events. For 1679/1759 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23536 event pairs, 768 based on Foata normal form. 28/3698 useless extension candidates. Maximal degree in co-relation 8949. Up to 3126 conditions per place. [2024-06-27 18:45:26,924 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 66 selfloop transitions, 19 changer transitions 0/96 dead transitions. [2024-06-27 18:45:26,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 490 flow [2024-06-27 18:45:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:45:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:45:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-06-27 18:45:26,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2024-06-27 18:45:26,928 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 200 flow. Second operand 5 states and 151 transitions. [2024-06-27 18:45:26,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 490 flow [2024-06-27 18:45:26,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 96 transitions, 476 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:45:26,932 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 285 flow [2024-06-27 18:45:26,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-06-27 18:45:26,934 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-27 18:45:26,934 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 285 flow [2024-06-27 18:45:26,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:26,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:26,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:26,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:45:26,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:45:26,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1088860492, now seen corresponding path program 1 times [2024-06-27 18:45:26,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:26,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885273373] [2024-06-27 18:45:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:26,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:28,672 INFO 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 18:45:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885273373] [2024-06-27 18:45:28,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885273373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:28,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:28,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:45:28,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137063092] [2024-06-27 18:45:28,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:28,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:45:28,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:45:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:45:28,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:45:28,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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 18:45:28,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:28,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:45:28,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:29,765 INFO L124 PetriNetUnfolderBase]: 1724/2922 cut-off events. [2024-06-27 18:45:29,765 INFO L125 PetriNetUnfolderBase]: For 2800/2808 co-relation queries the response was YES. [2024-06-27 18:45:29,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7841 conditions, 2922 events. 1724/2922 cut-off events. For 2800/2808 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17694 event pairs, 732 based on Foata normal form. 6/2838 useless extension candidates. Maximal degree in co-relation 7822. Up to 2513 conditions per place. [2024-06-27 18:45:29,782 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 64 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-06-27 18:45:29,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 552 flow [2024-06-27 18:45:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:45:29,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:45:29,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:45:29,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-06-27 18:45:29,788 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 285 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:45:29,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 552 flow [2024-06-27 18:45:29,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 525 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 18:45:29,793 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 370 flow [2024-06-27 18:45:29,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-27 18:45:29,796 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 18:45:29,796 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 370 flow [2024-06-27 18:45:29,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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 18:45:29,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:29,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:29,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:45:29,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:45:29,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash -605060922, now seen corresponding path program 1 times [2024-06-27 18:45:29,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:29,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65340220] [2024-06-27 18:45:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:29,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:31,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:31,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65340220] [2024-06-27 18:45:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65340220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:31,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:31,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:45:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706333869] [2024-06-27 18:45:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:31,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:45:31,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:31,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:45:31,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:45:31,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:45:31,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:31,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:31,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:45:31,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:33,208 INFO L124 PetriNetUnfolderBase]: 2732/4553 cut-off events. [2024-06-27 18:45:33,208 INFO L125 PetriNetUnfolderBase]: For 5743/5743 co-relation queries the response was YES. [2024-06-27 18:45:33,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12800 conditions, 4553 events. 2732/4553 cut-off events. For 5743/5743 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 28203 event pairs, 1066 based on Foata normal form. 6/4430 useless extension candidates. Maximal degree in co-relation 12776. Up to 3870 conditions per place. [2024-06-27 18:45:33,228 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 96 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2024-06-27 18:45:33,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 748 flow [2024-06-27 18:45:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:45:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:45:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 18:45:33,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 18:45:33,229 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 370 flow. Second operand 6 states and 153 transitions. [2024-06-27 18:45:33,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 748 flow [2024-06-27 18:45:33,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 117 transitions, 740 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:45:33,236 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 468 flow [2024-06-27 18:45:33,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=468, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-27 18:45:33,237 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-27 18:45:33,237 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 468 flow [2024-06-27 18:45:33,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:33,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:33,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:45:33,237 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 18:45:33,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash 90391185, now seen corresponding path program 1 times [2024-06-27 18:45:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669093839] [2024-06-27 18:45:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:35,547 INFO 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 18:45:35,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669093839] [2024-06-27 18:45:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669093839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:35,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:35,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:45:35,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130913192] [2024-06-27 18:45:35,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:35,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:45:35,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:45:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:45:35,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:45:35,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 468 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:35,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:35,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:45:35,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:36,577 INFO L124 PetriNetUnfolderBase]: 2777/4670 cut-off events. [2024-06-27 18:45:36,577 INFO L125 PetriNetUnfolderBase]: For 8549/8667 co-relation queries the response was YES. [2024-06-27 18:45:36,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14443 conditions, 4670 events. 2777/4670 cut-off events. For 8549/8667 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 29849 event pairs, 937 based on Foata normal form. 24/4522 useless extension candidates. Maximal degree in co-relation 14414. Up to 3800 conditions per place. [2024-06-27 18:45:36,600 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 98 selfloop transitions, 21 changer transitions 0/132 dead transitions. [2024-06-27 18:45:36,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 132 transitions, 934 flow [2024-06-27 18:45:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:45:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:45:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 18:45:36,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 18:45:36,602 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 468 flow. Second operand 6 states and 164 transitions. [2024-06-27 18:45:36,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 132 transitions, 934 flow [2024-06-27 18:45:36,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 132 transitions, 932 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:45:36,612 INFO L231 Difference]: Finished difference. Result has 81 places, 90 transitions, 643 flow [2024-06-27 18:45:36,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2024-06-27 18:45:36,613 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-27 18:45:36,613 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 643 flow [2024-06-27 18:45:36,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:36,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:36,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:36,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:45:36,614 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 18:45:36,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash 554166505, now seen corresponding path program 2 times [2024-06-27 18:45:36,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:36,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998562431] [2024-06-27 18:45:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:38,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:38,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998562431] [2024-06-27 18:45:38,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998562431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:38,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:38,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:45:38,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718339923] [2024-06-27 18:45:38,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:38,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:45:38,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:38,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:45:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:45:38,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:45:38,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 643 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:38,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:38,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:45:38,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:39,709 INFO L124 PetriNetUnfolderBase]: 2768/4629 cut-off events. [2024-06-27 18:45:39,709 INFO L125 PetriNetUnfolderBase]: For 12445/12638 co-relation queries the response was YES. [2024-06-27 18:45:39,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16004 conditions, 4629 events. 2768/4629 cut-off events. For 12445/12638 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 29275 event pairs, 996 based on Foata normal form. 39/4510 useless extension candidates. Maximal degree in co-relation 15970. Up to 3869 conditions per place. [2024-06-27 18:45:39,731 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 97 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2024-06-27 18:45:39,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 126 transitions, 987 flow [2024-06-27 18:45:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:45:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:45:39,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 18:45:39,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-27 18:45:39,732 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 643 flow. Second operand 6 states and 155 transitions. [2024-06-27 18:45:39,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 126 transitions, 987 flow [2024-06-27 18:45:39,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 126 transitions, 969 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 18:45:39,747 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 691 flow [2024-06-27 18:45:39,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=691, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-06-27 18:45:39,747 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-27 18:45:39,747 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 691 flow [2024-06-27 18:45:39,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:39,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:39,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:39,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:45:39,748 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 18:45:39,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:39,749 INFO L85 PathProgramCache]: Analyzing trace with hash 509854981, now seen corresponding path program 1 times [2024-06-27 18:45:39,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:39,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185292736] [2024-06-27 18:45:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:41,447 INFO 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 18:45:41,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185292736] [2024-06-27 18:45:41,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185292736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:41,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:41,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:45:41,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41868838] [2024-06-27 18:45:41,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:41,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:45:41,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:45:41,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:45:41,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:45:41,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 691 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:41,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:41,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:45:41,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:43,748 INFO L124 PetriNetUnfolderBase]: 3847/6352 cut-off events. [2024-06-27 18:45:43,748 INFO L125 PetriNetUnfolderBase]: For 15231/15240 co-relation queries the response was YES. [2024-06-27 18:45:43,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20458 conditions, 6352 events. 3847/6352 cut-off events. For 15231/15240 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 41439 event pairs, 1048 based on Foata normal form. 36/6221 useless extension candidates. Maximal degree in co-relation 20421. Up to 4099 conditions per place. [2024-06-27 18:45:43,778 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 121 selfloop transitions, 35 changer transitions 0/165 dead transitions. [2024-06-27 18:45:43,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 165 transitions, 1273 flow [2024-06-27 18:45:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:45:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:45:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:45:43,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-27 18:45:43,780 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 691 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:45:43,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 165 transitions, 1273 flow [2024-06-27 18:45:43,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 165 transitions, 1232 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:43,799 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 828 flow [2024-06-27 18:45:43,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=828, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2024-06-27 18:45:43,799 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-27 18:45:43,800 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 828 flow [2024-06-27 18:45:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:43,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:43,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:43,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:45:43,814 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 18:45:43,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1642899771, now seen corresponding path program 2 times [2024-06-27 18:45:43,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:43,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275081463] [2024-06-27 18:45:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:45,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:45,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275081463] [2024-06-27 18:45:45,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275081463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:45,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:45,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:45:45,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533775284] [2024-06-27 18:45:45,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:45,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:45:45,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:45,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:45:45,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:45:45,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:45:45,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 828 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:45,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:45,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:45:45,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:47,764 INFO L124 PetriNetUnfolderBase]: 3834/6365 cut-off events. [2024-06-27 18:45:47,765 INFO L125 PetriNetUnfolderBase]: For 20559/20568 co-relation queries the response was YES. [2024-06-27 18:45:47,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23220 conditions, 6365 events. 3834/6365 cut-off events. For 20559/20568 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 41543 event pairs, 1371 based on Foata normal form. 12/6186 useless extension candidates. Maximal degree in co-relation 23181. Up to 5227 conditions per place. [2024-06-27 18:45:47,801 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 131 selfloop transitions, 28 changer transitions 0/168 dead transitions. [2024-06-27 18:45:47,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 168 transitions, 1463 flow [2024-06-27 18:45:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:45:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:45:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:45:47,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 18:45:47,803 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 828 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:45:47,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 168 transitions, 1463 flow [2024-06-27 18:45:47,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 168 transitions, 1390 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:47,839 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 1048 flow [2024-06-27 18:45:47,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1048, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2024-06-27 18:45:47,840 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-06-27 18:45:47,840 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 1048 flow [2024-06-27 18:45:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:47,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:47,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:45:47,841 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 18:45:47,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:47,841 INFO L85 PathProgramCache]: Analyzing trace with hash -44646130, now seen corresponding path program 1 times [2024-06-27 18:45:47,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:47,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156063473] [2024-06-27 18:45:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:50,195 INFO 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 18:45:50,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:50,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156063473] [2024-06-27 18:45:50,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156063473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:50,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:50,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350318265] [2024-06-27 18:45:50,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:50,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:50,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:50,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:50,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:50,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:45:50,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 1048 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:45:50,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:50,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:45:50,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:52,004 INFO L124 PetriNetUnfolderBase]: 3805/6416 cut-off events. [2024-06-27 18:45:52,004 INFO L125 PetriNetUnfolderBase]: For 25919/26316 co-relation queries the response was YES. [2024-06-27 18:45:52,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24078 conditions, 6416 events. 3805/6416 cut-off events. For 25919/26316 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 43668 event pairs, 1143 based on Foata normal form. 171/6329 useless extension candidates. Maximal degree in co-relation 24035. Up to 5128 conditions per place. [2024-06-27 18:45:52,044 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 133 selfloop transitions, 30 changer transitions 0/180 dead transitions. [2024-06-27 18:45:52,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 180 transitions, 1647 flow [2024-06-27 18:45:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:45:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:45:52,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 18:45:52,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 18:45:52,046 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 1048 flow. Second operand 7 states and 192 transitions. [2024-06-27 18:45:52,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 180 transitions, 1647 flow [2024-06-27 18:45:52,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 180 transitions, 1623 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 18:45:52,082 INFO L231 Difference]: Finished difference. Result has 105 places, 124 transitions, 1178 flow [2024-06-27 18:45:52,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1178, PETRI_PLACES=105, PETRI_TRANSITIONS=124} [2024-06-27 18:45:52,082 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-27 18:45:52,082 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 124 transitions, 1178 flow [2024-06-27 18:45:52,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:45:52,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:52,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:52,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:45:52,083 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 18:45:52,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:52,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1378087570, now seen corresponding path program 2 times [2024-06-27 18:45:52,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:52,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863478577] [2024-06-27 18:45:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:52,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:55,272 INFO 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 18:45:55,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:55,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863478577] [2024-06-27 18:45:55,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863478577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:55,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:55,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:55,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741952034] [2024-06-27 18:45:55,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:55,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:55,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:55,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:45:55,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 124 transitions, 1178 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:45:55,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:55,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:45:55,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:57,148 INFO L124 PetriNetUnfolderBase]: 3808/6422 cut-off events. [2024-06-27 18:45:57,149 INFO L125 PetriNetUnfolderBase]: For 30642/31108 co-relation queries the response was YES. [2024-06-27 18:45:57,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25058 conditions, 6422 events. 3808/6422 cut-off events. For 30642/31108 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 43726 event pairs, 1334 based on Foata normal form. 201/6364 useless extension candidates. Maximal degree in co-relation 25011. Up to 5238 conditions per place. [2024-06-27 18:45:57,189 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 133 selfloop transitions, 28 changer transitions 0/178 dead transitions. [2024-06-27 18:45:57,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 178 transitions, 1688 flow [2024-06-27 18:45:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:45:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:45:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-27 18:45:57,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 18:45:57,192 INFO L175 Difference]: Start difference. First operand has 105 places, 124 transitions, 1178 flow. Second operand 7 states and 189 transitions. [2024-06-27 18:45:57,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 178 transitions, 1688 flow [2024-06-27 18:45:57,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 178 transitions, 1635 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:45:57,239 INFO L231 Difference]: Finished difference. Result has 109 places, 126 transitions, 1218 flow [2024-06-27 18:45:57,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1218, PETRI_PLACES=109, PETRI_TRANSITIONS=126} [2024-06-27 18:45:57,240 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-27 18:45:57,240 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 126 transitions, 1218 flow [2024-06-27 18:45:57,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:45:57,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:57,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:45:57,241 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 18:45:57,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1378087415, now seen corresponding path program 1 times [2024-06-27 18:45:57,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858269186] [2024-06-27 18:45:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:59,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:59,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858269186] [2024-06-27 18:45:59,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858269186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:59,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:59,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203799130] [2024-06-27 18:45:59,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:59,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:59,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:59,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:59,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:59,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:45:59,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 126 transitions, 1218 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:59,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:59,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:45:59,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:01,165 INFO L124 PetriNetUnfolderBase]: 4739/7870 cut-off events. [2024-06-27 18:46:01,165 INFO L125 PetriNetUnfolderBase]: For 33324/33342 co-relation queries the response was YES. [2024-06-27 18:46:01,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30483 conditions, 7870 events. 4739/7870 cut-off events. For 33324/33342 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 53601 event pairs, 1471 based on Foata normal form. 30/7698 useless extension candidates. Maximal degree in co-relation 30434. Up to 6056 conditions per place. [2024-06-27 18:46:01,215 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 180 selfloop transitions, 30 changer transitions 0/219 dead transitions. [2024-06-27 18:46:01,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 219 transitions, 2153 flow [2024-06-27 18:46:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:46:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:46:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 18:46:01,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2024-06-27 18:46:01,217 INFO L175 Difference]: Start difference. First operand has 109 places, 126 transitions, 1218 flow. Second operand 8 states and 218 transitions. [2024-06-27 18:46:01,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 219 transitions, 2153 flow [2024-06-27 18:46:01,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 219 transitions, 2069 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:46:01,271 INFO L231 Difference]: Finished difference. Result has 115 places, 146 transitions, 1469 flow [2024-06-27 18:46:01,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1469, PETRI_PLACES=115, PETRI_TRANSITIONS=146} [2024-06-27 18:46:01,271 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-27 18:46:01,272 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 146 transitions, 1469 flow [2024-06-27 18:46:01,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:01,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:01,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:01,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:46:01,272 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 18:46:01,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1374368500, now seen corresponding path program 3 times [2024-06-27 18:46:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846344117] [2024-06-27 18:46:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:03,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:03,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846344117] [2024-06-27 18:46:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846344117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:03,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:03,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:46:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488742035] [2024-06-27 18:46:03,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:46:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:03,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:46:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:46:03,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:46:03,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 146 transitions, 1469 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:46:03,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:03,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:46:03,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:05,193 INFO L124 PetriNetUnfolderBase]: 4575/7719 cut-off events. [2024-06-27 18:46:05,193 INFO L125 PetriNetUnfolderBase]: For 46980/47304 co-relation queries the response was YES. [2024-06-27 18:46:05,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32749 conditions, 7719 events. 4575/7719 cut-off events. For 46980/47304 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 54123 event pairs, 1563 based on Foata normal form. 128/7539 useless extension candidates. Maximal degree in co-relation 32696. Up to 6302 conditions per place. [2024-06-27 18:46:05,234 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 136 selfloop transitions, 44 changer transitions 0/200 dead transitions. [2024-06-27 18:46:05,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 200 transitions, 2077 flow [2024-06-27 18:46:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:46:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:46:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 18:46:05,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-27 18:46:05,237 INFO L175 Difference]: Start difference. First operand has 115 places, 146 transitions, 1469 flow. Second operand 7 states and 186 transitions. [2024-06-27 18:46:05,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 200 transitions, 2077 flow [2024-06-27 18:46:05,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 200 transitions, 2016 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-27 18:46:05,307 INFO L231 Difference]: Finished difference. Result has 121 places, 154 transitions, 1635 flow [2024-06-27 18:46:05,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1635, PETRI_PLACES=121, PETRI_TRANSITIONS=154} [2024-06-27 18:46:05,308 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-27 18:46:05,308 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 154 transitions, 1635 flow [2024-06-27 18:46:05,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 18:46:05,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:05,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:05,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:46:05,309 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 18:46:05,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:05,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1374362765, now seen corresponding path program 2 times [2024-06-27 18:46:05,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:05,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737558973] [2024-06-27 18:46:05,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:05,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:07,428 INFO 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 18:46:07,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:07,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737558973] [2024-06-27 18:46:07,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737558973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:07,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:07,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:46:07,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993520996] [2024-06-27 18:46:07,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:07,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:46:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:07,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:46:07,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:46:07,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:46:07,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 154 transitions, 1635 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:07,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:07,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:46:07,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:10,396 INFO L124 PetriNetUnfolderBase]: 6440/10652 cut-off events. [2024-06-27 18:46:10,396 INFO L125 PetriNetUnfolderBase]: For 56029/56032 co-relation queries the response was YES. [2024-06-27 18:46:10,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44856 conditions, 10652 events. 6440/10652 cut-off events. For 56029/56032 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 75483 event pairs, 1855 based on Foata normal form. 20/10389 useless extension candidates. Maximal degree in co-relation 44800. Up to 6764 conditions per place. [2024-06-27 18:46:10,458 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 252 selfloop transitions, 97 changer transitions 0/358 dead transitions. [2024-06-27 18:46:10,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 358 transitions, 3855 flow [2024-06-27 18:46:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 341 transitions. [2024-06-27 18:46:10,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5920138888888888 [2024-06-27 18:46:10,470 INFO L175 Difference]: Start difference. First operand has 121 places, 154 transitions, 1635 flow. Second operand 12 states and 341 transitions. [2024-06-27 18:46:10,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 358 transitions, 3855 flow [2024-06-27 18:46:10,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 358 transitions, 3706 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:46:10,597 INFO L231 Difference]: Finished difference. Result has 137 places, 219 transitions, 2738 flow [2024-06-27 18:46:10,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2738, PETRI_PLACES=137, PETRI_TRANSITIONS=219} [2024-06-27 18:46:10,598 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-27 18:46:10,598 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 219 transitions, 2738 flow [2024-06-27 18:46:10,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:10,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:10,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:10,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:46:10,599 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 18:46:10,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:10,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1509846895, now seen corresponding path program 3 times [2024-06-27 18:46:10,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986551765] [2024-06-27 18:46:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:10,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:12,415 INFO 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 18:46:12,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:12,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986551765] [2024-06-27 18:46:12,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986551765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:12,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:12,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:46:12,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537252312] [2024-06-27 18:46:12,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:12,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:46:12,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:12,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:46:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:46:12,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:46:12,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 219 transitions, 2738 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:12,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:12,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:46:12,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:15,408 INFO L124 PetriNetUnfolderBase]: 7011/11604 cut-off events. [2024-06-27 18:46:15,409 INFO L125 PetriNetUnfolderBase]: For 75678/75699 co-relation queries the response was YES. [2024-06-27 18:46:15,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53691 conditions, 11604 events. 7011/11604 cut-off events. For 75678/75699 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 83462 event pairs, 1977 based on Foata normal form. 32/11337 useless extension candidates. Maximal degree in co-relation 53626. Up to 9080 conditions per place. [2024-06-27 18:46:15,494 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 234 selfloop transitions, 74 changer transitions 0/317 dead transitions. [2024-06-27 18:46:15,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 317 transitions, 4050 flow [2024-06-27 18:46:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:15,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:46:15,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 18:46:15,497 INFO L175 Difference]: Start difference. First operand has 137 places, 219 transitions, 2738 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:46:15,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 317 transitions, 4050 flow [2024-06-27 18:46:15,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 317 transitions, 3858 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-06-27 18:46:15,760 INFO L231 Difference]: Finished difference. Result has 145 places, 251 transitions, 3194 flow [2024-06-27 18:46:15,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2609, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3194, PETRI_PLACES=145, PETRI_TRANSITIONS=251} [2024-06-27 18:46:15,760 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-27 18:46:15,760 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 251 transitions, 3194 flow [2024-06-27 18:46:15,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:15,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:15,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:15,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:46:15,761 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 18:46:15,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:15,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1384739047, now seen corresponding path program 4 times [2024-06-27 18:46:15,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:15,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498904545] [2024-06-27 18:46:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:15,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:17,562 INFO 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 18:46:17,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498904545] [2024-06-27 18:46:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498904545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:46:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195484164] [2024-06-27 18:46:17,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:17,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:46:17,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:17,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:46:17,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:46:17,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:46:17,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 251 transitions, 3194 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:17,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:17,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:46:17,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:20,525 INFO L124 PetriNetUnfolderBase]: 7596/12557 cut-off events. [2024-06-27 18:46:20,525 INFO L125 PetriNetUnfolderBase]: For 96841/96862 co-relation queries the response was YES. [2024-06-27 18:46:20,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62570 conditions, 12557 events. 7596/12557 cut-off events. For 96841/96862 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 91262 event pairs, 2042 based on Foata normal form. 32/12277 useless extension candidates. Maximal degree in co-relation 62502. Up to 9214 conditions per place. [2024-06-27 18:46:20,608 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 252 selfloop transitions, 76 changer transitions 0/337 dead transitions. [2024-06-27 18:46:20,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 337 transitions, 4411 flow [2024-06-27 18:46:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:46:20,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532407407407407 [2024-06-27 18:46:20,612 INFO L175 Difference]: Start difference. First operand has 145 places, 251 transitions, 3194 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:46:20,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 337 transitions, 4411 flow [2024-06-27 18:46:20,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 337 transitions, 4249 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 18:46:20,879 INFO L231 Difference]: Finished difference. Result has 150 places, 259 transitions, 3358 flow [2024-06-27 18:46:20,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3358, PETRI_PLACES=150, PETRI_TRANSITIONS=259} [2024-06-27 18:46:20,880 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-06-27 18:46:20,880 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 259 transitions, 3358 flow [2024-06-27 18:46:20,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:20,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:20,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:20,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:46:20,881 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 18:46:20,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash 609716659, now seen corresponding path program 5 times [2024-06-27 18:46:20,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:20,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56410063] [2024-06-27 18:46:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:20,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:23,107 INFO 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 18:46:23,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:23,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56410063] [2024-06-27 18:46:23,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56410063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:23,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:23,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:46:23,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172450121] [2024-06-27 18:46:23,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:23,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:46:23,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:46:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:46:23,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:46:23,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 259 transitions, 3358 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:23,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:23,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:46:23,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:26,152 INFO L124 PetriNetUnfolderBase]: 7683/12877 cut-off events. [2024-06-27 18:46:26,153 INFO L125 PetriNetUnfolderBase]: For 105800/105821 co-relation queries the response was YES. [2024-06-27 18:46:26,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64508 conditions, 12877 events. 7683/12877 cut-off events. For 105800/105821 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 95133 event pairs, 2008 based on Foata normal form. 20/12506 useless extension candidates. Maximal degree in co-relation 64438. Up to 10207 conditions per place. [2024-06-27 18:46:26,252 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 286 selfloop transitions, 77 changer transitions 0/372 dead transitions. [2024-06-27 18:46:26,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 372 transitions, 4833 flow [2024-06-27 18:46:26,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:26,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-27 18:46:26,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671296296296297 [2024-06-27 18:46:26,254 INFO L175 Difference]: Start difference. First operand has 150 places, 259 transitions, 3358 flow. Second operand 9 states and 245 transitions. [2024-06-27 18:46:26,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 372 transitions, 4833 flow [2024-06-27 18:46:26,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 372 transitions, 4656 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 18:46:26,621 INFO L231 Difference]: Finished difference. Result has 155 places, 282 transitions, 3723 flow [2024-06-27 18:46:26,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3215, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3723, PETRI_PLACES=155, PETRI_TRANSITIONS=282} [2024-06-27 18:46:26,621 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 101 predicate places. [2024-06-27 18:46:26,621 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 282 transitions, 3723 flow [2024-06-27 18:46:26,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:26,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:26,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:26,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:46:26,622 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 18:46:26,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash -138171604, now seen corresponding path program 1 times [2024-06-27 18:46:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:26,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748995145] [2024-06-27 18:46:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:26,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:28,873 INFO 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 18:46:28,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:28,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748995145] [2024-06-27 18:46:28,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748995145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:28,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:28,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:28,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638792776] [2024-06-27 18:46:28,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:28,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:28,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:29,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:46:29,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 282 transitions, 3723 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:46:29,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:29,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:46:29,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:32,689 INFO L124 PetriNetUnfolderBase]: 9850/16686 cut-off events. [2024-06-27 18:46:32,689 INFO L125 PetriNetUnfolderBase]: For 156790/156848 co-relation queries the response was YES. [2024-06-27 18:46:32,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84216 conditions, 16686 events. 9850/16686 cut-off events. For 156790/156848 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 131944 event pairs, 1805 based on Foata normal form. 76/16315 useless extension candidates. Maximal degree in co-relation 84143. Up to 5054 conditions per place. [2024-06-27 18:46:32,841 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 263 selfloop transitions, 151 changer transitions 0/423 dead transitions. [2024-06-27 18:46:32,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 423 transitions, 5718 flow [2024-06-27 18:46:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 271 transitions. [2024-06-27 18:46:32,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6273148148148148 [2024-06-27 18:46:32,844 INFO L175 Difference]: Start difference. First operand has 155 places, 282 transitions, 3723 flow. Second operand 9 states and 271 transitions. [2024-06-27 18:46:32,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 423 transitions, 5718 flow [2024-06-27 18:46:33,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 423 transitions, 5548 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:46:33,401 INFO L231 Difference]: Finished difference. Result has 161 places, 298 transitions, 4251 flow [2024-06-27 18:46:33,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4251, PETRI_PLACES=161, PETRI_TRANSITIONS=298} [2024-06-27 18:46:33,401 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 18:46:33,401 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 298 transitions, 4251 flow [2024-06-27 18:46:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:46:33,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:33,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:33,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:46:33,402 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 18:46:33,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash -138056284, now seen corresponding path program 2 times [2024-06-27 18:46:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:33,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235592928] [2024-06-27 18:46:33,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:33,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:35,851 INFO 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 18:46:35,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:35,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235592928] [2024-06-27 18:46:35,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235592928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:35,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:35,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:35,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894754842] [2024-06-27 18:46:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:35,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:35,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:35,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:35,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:46:35,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 298 transitions, 4251 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:46:35,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:35,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:46:35,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:40,070 INFO L124 PetriNetUnfolderBase]: 10763/18091 cut-off events. [2024-06-27 18:46:40,070 INFO L125 PetriNetUnfolderBase]: For 200471/200504 co-relation queries the response was YES. [2024-06-27 18:46:40,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94948 conditions, 18091 events. 10763/18091 cut-off events. For 200471/200504 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 144407 event pairs, 3454 based on Foata normal form. 58/17781 useless extension candidates. Maximal degree in co-relation 94871. Up to 13276 conditions per place. [2024-06-27 18:46:40,236 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 359 selfloop transitions, 46 changer transitions 0/414 dead transitions. [2024-06-27 18:46:40,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 414 transitions, 5817 flow [2024-06-27 18:46:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 280 transitions. [2024-06-27 18:46:40,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 18:46:40,238 INFO L175 Difference]: Start difference. First operand has 161 places, 298 transitions, 4251 flow. Second operand 10 states and 280 transitions. [2024-06-27 18:46:40,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 414 transitions, 5817 flow [2024-06-27 18:46:41,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 414 transitions, 5573 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-27 18:46:41,027 INFO L231 Difference]: Finished difference. Result has 168 places, 303 transitions, 4212 flow [2024-06-27 18:46:41,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4007, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4212, PETRI_PLACES=168, PETRI_TRANSITIONS=303} [2024-06-27 18:46:41,027 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 114 predicate places. [2024-06-27 18:46:41,027 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 303 transitions, 4212 flow [2024-06-27 18:46:41,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:46:41,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:41,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:41,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:46:41,028 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 18:46:41,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:41,029 INFO L85 PathProgramCache]: Analyzing trace with hash -22580788, now seen corresponding path program 1 times [2024-06-27 18:46:41,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:41,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415487789] [2024-06-27 18:46:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:41,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:43,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415487789] [2024-06-27 18:46:43,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415487789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:43,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:43,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:43,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585592656] [2024-06-27 18:46:43,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:43,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:43,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:43,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:43,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:43,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:46:43,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 303 transitions, 4212 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:46:43,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:43,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:46:43,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:47,932 INFO L124 PetriNetUnfolderBase]: 10946/18640 cut-off events. [2024-06-27 18:46:47,933 INFO L125 PetriNetUnfolderBase]: For 198084/198117 co-relation queries the response was YES. [2024-06-27 18:46:48,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96695 conditions, 18640 events. 10946/18640 cut-off events. For 198084/198117 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 150914 event pairs, 3318 based on Foata normal form. 36/18171 useless extension candidates. Maximal degree in co-relation 96616. Up to 11932 conditions per place. [2024-06-27 18:46:48,125 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 235 selfloop transitions, 145 changer transitions 0/389 dead transitions. [2024-06-27 18:46:48,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 389 transitions, 5530 flow [2024-06-27 18:46:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:46:48,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 18:46:48,128 INFO L175 Difference]: Start difference. First operand has 168 places, 303 transitions, 4212 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:46:48,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 389 transitions, 5530 flow [2024-06-27 18:46:49,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 389 transitions, 5401 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:46:49,093 INFO L231 Difference]: Finished difference. Result has 171 places, 308 transitions, 4535 flow [2024-06-27 18:46:49,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4085, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4535, PETRI_PLACES=171, PETRI_TRANSITIONS=308} [2024-06-27 18:46:49,094 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-27 18:46:49,120 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 308 transitions, 4535 flow [2024-06-27 18:46:49,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:46:49,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:49,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:49,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:46:49,121 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 18:46:49,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash -22765114, now seen corresponding path program 3 times [2024-06-27 18:46:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:49,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654311375] [2024-06-27 18:46:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:51,402 INFO 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 18:46:51,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:51,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654311375] [2024-06-27 18:46:51,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654311375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:51,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:51,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500276262] [2024-06-27 18:46:51,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:51,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:51,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:51,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:46:51,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 308 transitions, 4535 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:46:51,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:51,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:46:51,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:56,117 INFO L124 PetriNetUnfolderBase]: 12617/21165 cut-off events. [2024-06-27 18:46:56,118 INFO L125 PetriNetUnfolderBase]: For 245007/245042 co-relation queries the response was YES. [2024-06-27 18:46:56,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113472 conditions, 21165 events. 12617/21165 cut-off events. For 245007/245042 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 173091 event pairs, 3730 based on Foata normal form. 60/20830 useless extension candidates. Maximal degree in co-relation 113391. Up to 12497 conditions per place. [2024-06-27 18:46:56,355 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 365 selfloop transitions, 132 changer transitions 0/506 dead transitions. [2024-06-27 18:46:56,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 506 transitions, 7789 flow [2024-06-27 18:46:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 301 transitions. [2024-06-27 18:46:56,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5700757575757576 [2024-06-27 18:46:56,357 INFO L175 Difference]: Start difference. First operand has 171 places, 308 transitions, 4535 flow. Second operand 11 states and 301 transitions. [2024-06-27 18:46:56,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 506 transitions, 7789 flow [2024-06-27 18:46:57,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 506 transitions, 7361 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:57,878 INFO L231 Difference]: Finished difference. Result has 178 places, 368 transitions, 5663 flow [2024-06-27 18:46:57,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4235, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5663, PETRI_PLACES=178, PETRI_TRANSITIONS=368} [2024-06-27 18:46:57,879 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 124 predicate places. [2024-06-27 18:46:57,879 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 368 transitions, 5663 flow [2024-06-27 18:46:57,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:46:57,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:57,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:57,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:46:57,880 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 18:46:57,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash -22760464, now seen corresponding path program 4 times [2024-06-27 18:46:57,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:57,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841189730] [2024-06-27 18:46:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:57,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:00,147 INFO 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 18:47:00,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:00,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841189730] [2024-06-27 18:47:00,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841189730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:00,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:00,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:47:00,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673588909] [2024-06-27 18:47:00,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:00,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:47:00,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:00,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:47:00,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:47:00,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:47:00,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 368 transitions, 5663 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:47:00,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:00,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:47:00,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:05,947 INFO L124 PetriNetUnfolderBase]: 13113/22016 cut-off events. [2024-06-27 18:47:05,947 INFO L125 PetriNetUnfolderBase]: For 282075/282112 co-relation queries the response was YES. [2024-06-27 18:47:06,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121359 conditions, 22016 events. 13113/22016 cut-off events. For 282075/282112 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 181564 event pairs, 3989 based on Foata normal form. 62/21671 useless extension candidates. Maximal degree in co-relation 121274. Up to 14582 conditions per place. [2024-06-27 18:47:06,174 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 365 selfloop transitions, 135 changer transitions 0/509 dead transitions. [2024-06-27 18:47:06,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 509 transitions, 7939 flow [2024-06-27 18:47:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 299 transitions. [2024-06-27 18:47:06,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5662878787878788 [2024-06-27 18:47:06,176 INFO L175 Difference]: Start difference. First operand has 178 places, 368 transitions, 5663 flow. Second operand 11 states and 299 transitions. [2024-06-27 18:47:06,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 509 transitions, 7939 flow [2024-06-27 18:47:08,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 509 transitions, 7774 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 18:47:08,108 INFO L231 Difference]: Finished difference. Result has 186 places, 380 transitions, 6111 flow [2024-06-27 18:47:08,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5504, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6111, PETRI_PLACES=186, PETRI_TRANSITIONS=380} [2024-06-27 18:47:08,109 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-06-27 18:47:08,109 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 380 transitions, 6111 flow [2024-06-27 18:47:08,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:47:08,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:08,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:08,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:47:08,110 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 18:47:08,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash -22587484, now seen corresponding path program 5 times [2024-06-27 18:47:08,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:08,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786299291] [2024-06-27 18:47:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:08,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:10,454 INFO 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 18:47:10,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:10,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786299291] [2024-06-27 18:47:10,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786299291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:10,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:10,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:47:10,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667553263] [2024-06-27 18:47:10,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:10,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:47:10,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:10,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:47:10,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:47:10,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:47:10,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 380 transitions, 6111 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:47:10,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:10,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:47:10,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:16,975 INFO L124 PetriNetUnfolderBase]: 14710/24820 cut-off events. [2024-06-27 18:47:16,976 INFO L125 PetriNetUnfolderBase]: For 347311/347348 co-relation queries the response was YES. [2024-06-27 18:47:17,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141001 conditions, 24820 events. 14710/24820 cut-off events. For 347311/347348 co-relation queries the response was YES. Maximal size of possible extension queue 1527. Compared 209720 event pairs, 4281 based on Foata normal form. 62/24423 useless extension candidates. Maximal degree in co-relation 140912. Up to 16514 conditions per place. [2024-06-27 18:47:17,235 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 383 selfloop transitions, 185 changer transitions 0/577 dead transitions. [2024-06-27 18:47:17,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 577 transitions, 9614 flow [2024-06-27 18:47:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:17,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 320 transitions. [2024-06-27 18:47:17,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 18:47:17,237 INFO L175 Difference]: Start difference. First operand has 186 places, 380 transitions, 6111 flow. Second operand 12 states and 320 transitions. [2024-06-27 18:47:17,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 577 transitions, 9614 flow [2024-06-27 18:47:19,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 577 transitions, 9300 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-27 18:47:19,760 INFO L231 Difference]: Finished difference. Result has 195 places, 466 transitions, 8170 flow [2024-06-27 18:47:19,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5869, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8170, PETRI_PLACES=195, PETRI_TRANSITIONS=466} [2024-06-27 18:47:19,761 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 141 predicate places. [2024-06-27 18:47:19,761 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 466 transitions, 8170 flow [2024-06-27 18:47:19,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:47:19,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:19,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:19,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:47:19,762 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 18:47:19,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1721349284, now seen corresponding path program 6 times [2024-06-27 18:47:19,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:19,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519236653] [2024-06-27 18:47:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:19,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:22,600 INFO 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 18:47:22,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:22,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519236653] [2024-06-27 18:47:22,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519236653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:22,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:22,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:47:22,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497012931] [2024-06-27 18:47:22,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:22,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:47:22,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:47:22,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:47:22,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:47:22,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 466 transitions, 8170 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:47:22,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:22,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:47:22,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:29,269 INFO L124 PetriNetUnfolderBase]: 14723/25082 cut-off events. [2024-06-27 18:47:29,269 INFO L125 PetriNetUnfolderBase]: For 375569/375602 co-relation queries the response was YES. [2024-06-27 18:47:29,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150034 conditions, 25082 events. 14723/25082 cut-off events. For 375569/375602 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 215059 event pairs, 5155 based on Foata normal form. 34/24628 useless extension candidates. Maximal degree in co-relation 149940. Up to 20942 conditions per place. [2024-06-27 18:47:29,546 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 462 selfloop transitions, 83 changer transitions 0/554 dead transitions. [2024-06-27 18:47:29,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 554 transitions, 9731 flow [2024-06-27 18:47:29,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:47:29,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:47:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 18:47:29,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-27 18:47:29,564 INFO L175 Difference]: Start difference. First operand has 195 places, 466 transitions, 8170 flow. Second operand 9 states and 236 transitions. [2024-06-27 18:47:29,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 554 transitions, 9731 flow [2024-06-27 18:47:32,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 554 transitions, 9460 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-27 18:47:32,753 INFO L231 Difference]: Finished difference. Result has 197 places, 467 transitions, 8068 flow [2024-06-27 18:47:32,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7859, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8068, PETRI_PLACES=197, PETRI_TRANSITIONS=467} [2024-06-27 18:47:32,753 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-27 18:47:32,753 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 467 transitions, 8068 flow [2024-06-27 18:47:32,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:47:32,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:32,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:32,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:47:32,754 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:47:32,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash 10839949, now seen corresponding path program 1 times [2024-06-27 18:47:32,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:32,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025201385] [2024-06-27 18:47:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:34,048 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 18:47:34,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025201385] [2024-06-27 18:47:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025201385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:34,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:34,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:47:34,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134313413] [2024-06-27 18:47:34,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:34,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:47:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:47:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:47:34,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:47:34,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 467 transitions, 8068 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:34,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:34,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:47:34,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand