./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:57:06,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:57:06,291 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:57:06,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:57:06,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:57:06,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:57:06,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:57:06,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:57:06,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:57:06,330 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:57:06,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:57:06,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:57:06,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:57:06,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:57:06,332 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:57:06,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:57:06,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:57:06,333 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:57:06,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:57:06,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:57:06,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:57:06,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:57:06,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:57:06,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:57:06,334 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:57:06,334 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:57:06,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:57:06,334 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:57:06,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:57:06,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:57:06,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:57:06,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:57:06,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:57:06,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:57:06,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:57:06,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:57:06,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:57:06,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:57:06,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:57:06,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:57:06,337 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:57:06,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:57:06,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:57:06,338 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:57:06,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:57:06,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:57:06,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:57:06,549 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:57:06,550 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:57:06,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_rmo.opt.yml/witness.yml [2024-06-28 01:57:06,751 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:57:06,751 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:57:06,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i [2024-06-28 01:57:07,773 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:57:07,952 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:57:07,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i [2024-06-28 01:57:07,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ecbcd02/501dbcb361154f879cd6d287182271cf/FLAG7c685768e [2024-06-28 01:57:07,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ecbcd02/501dbcb361154f879cd6d287182271cf [2024-06-28 01:57:07,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:57:07,976 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:57:07,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:57:07,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:57:07,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:57:07,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:57:06" (1/2) ... [2024-06-28 01:57:07,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bce4825 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:07, skipping insertion in model container [2024-06-28 01:57:07,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:57:06" (1/2) ... [2024-06-28 01:57:07,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5bc27c81 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:57:07, skipping insertion in model container [2024-06-28 01:57:07,985 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:57:07" (2/2) ... [2024-06-28 01:57:07,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bce4825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:07, skipping insertion in model container [2024-06-28 01:57:07,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:57:07" (2/2) ... [2024-06-28 01:57:07,986 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:57:08,120 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:57:08,121 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] (((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$w_buff0_used == (_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$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__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)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-28 01:57:08,122 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-28 01:57:08,122 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] (((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$w_buff0_used == (_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$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__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)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-28 01:57:08,122 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:57:08,122 INFO L106 edCorrectnessWitness]: ghost_update [L839-L839] multithreaded = 1; [2024-06-28 01:57:08,165 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:57:08,332 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/safe009_rmo.opt.i[949,962] [2024-06-28 01:57:08,494 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:57:08,506 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:57:08,537 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/safe009_rmo.opt.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:57:08,685 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:57:08,732 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:57:08,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08 WrapperNode [2024-06-28 01:57:08,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:57:08,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:57:08,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:57:08,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:57:08,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,794 INFO L138 Inliner]: procedures = 175, calls = 81, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 205 [2024-06-28 01:57:08,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:57:08,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:57:08,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:57:08,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:57:08,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,841 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,873 INFO L175 MemorySlicer]: Split 43 memory accesses to 2 slices as follows [2, 41]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-06-28 01:57:08,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:57:08,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:57:08,924 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:57:08,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:57:08,925 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (1/1) ... [2024-06-28 01:57:08,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:57:08,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:57:08,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:57:08,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:57:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:57:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:57:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:57:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:57:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:57:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:57:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:57:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:57:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:57:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:57:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:57:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:57:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:57:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:57:09,001 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:57:09,154 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:57:09,155 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:57:09,593 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:57:09,594 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:57:09,899 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:57:09,899 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:57:09,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:57:09 BoogieIcfgContainer [2024-06-28 01:57:09,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:57:09,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:57:09,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:57:09,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:57:09,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:57:06" (1/4) ... [2024-06-28 01:57:09,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2201c2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:57:09, skipping insertion in model container [2024-06-28 01:57:09,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:57:07" (2/4) ... [2024-06-28 01:57:09,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2201c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:57:09, skipping insertion in model container [2024-06-28 01:57:09,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:57:08" (3/4) ... [2024-06-28 01:57:09,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2201c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:57:09, skipping insertion in model container [2024-06-28 01:57:09,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:57:09" (4/4) ... [2024-06-28 01:57:09,907 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_rmo.opt.i [2024-06-28 01:57:09,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:57:09,922 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:57:09,922 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:57:09,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:57:09,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:57:10,043 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:57:10,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:57:10,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 01:57:10,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:57:10,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 40 transitions, 89 flow [2024-06-28 01:57:10,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:57:10,060 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;@22f342c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:57:10,061 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:57:10,064 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:57:10,064 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:57:10,064 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:57:10,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:10,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:57:10,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:10,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash 709699253, now seen corresponding path program 1 times [2024-06-28 01:57:10,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:10,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097609527] [2024-06-28 01:57:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:10,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:11,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:11,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097609527] [2024-06-28 01:57:11,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097609527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:11,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:11,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:57:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348070679] [2024-06-28 01:57:11,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:11,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:57:11,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:57:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:57:12,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:57:12,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:12,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:12,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:57:12,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:12,835 INFO L124 PetriNetUnfolderBase]: 3395/5223 cut-off events. [2024-06-28 01:57:12,836 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 01:57:12,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10218 conditions, 5223 events. 3395/5223 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 29085 event pairs, 2190 based on Foata normal form. 0/5037 useless extension candidates. Maximal degree in co-relation 10206. Up to 4904 conditions per place. [2024-06-28 01:57:12,913 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 45 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 01:57:12,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 229 flow [2024-06-28 01:57:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:57:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:57:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-28 01:57:12,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6231884057971014 [2024-06-28 01:57:12,924 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 89 flow. Second operand 3 states and 86 transitions. [2024-06-28 01:57:12,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 229 flow [2024-06-28 01:57:12,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:12,928 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 123 flow [2024-06-28 01:57:12,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-28 01:57:12,948 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-06-28 01:57:12,948 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 123 flow [2024-06-28 01:57:12,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:12,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:12,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:12,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:57:12,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:12,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1470190591, now seen corresponding path program 1 times [2024-06-28 01:57:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873075742] [2024-06-28 01:57:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:15,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873075742] [2024-06-28 01:57:15,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873075742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:15,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:15,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:57:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763110280] [2024-06-28 01:57:15,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:15,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:57:15,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:15,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:57:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:57:15,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:15,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:15,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:15,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:15,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:16,035 INFO L124 PetriNetUnfolderBase]: 4118/6303 cut-off events. [2024-06-28 01:57:16,035 INFO L125 PetriNetUnfolderBase]: For 924/930 co-relation queries the response was YES. [2024-06-28 01:57:16,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13683 conditions, 6303 events. 4118/6303 cut-off events. For 924/930 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 34834 event pairs, 1760 based on Foata normal form. 10/6308 useless extension candidates. Maximal degree in co-relation 13671. Up to 5842 conditions per place. [2024-06-28 01:57:16,066 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 61 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-06-28 01:57:16,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 341 flow [2024-06-28 01:57:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:57:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:57:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-06-28 01:57:16,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6141304347826086 [2024-06-28 01:57:16,068 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 123 flow. Second operand 4 states and 113 transitions. [2024-06-28 01:57:16,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 341 flow [2024-06-28 01:57:16,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:16,070 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 169 flow [2024-06-28 01:57:16,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-06-28 01:57:16,071 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2024-06-28 01:57:16,071 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 169 flow [2024-06-28 01:57:16,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:16,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:16,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:16,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:57:16,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:16,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash 191133344, now seen corresponding path program 1 times [2024-06-28 01:57:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:16,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295160281] [2024-06-28 01:57:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:16,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:19,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:19,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295160281] [2024-06-28 01:57:19,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295160281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:19,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:19,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:19,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931359754] [2024-06-28 01:57:19,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:19,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:19,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:19,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:19,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:19,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:19,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:19,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:19,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:20,236 INFO L124 PetriNetUnfolderBase]: 4109/6288 cut-off events. [2024-06-28 01:57:20,237 INFO L125 PetriNetUnfolderBase]: For 2635/2647 co-relation queries the response was YES. [2024-06-28 01:57:20,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14949 conditions, 6288 events. 4109/6288 cut-off events. For 2635/2647 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 34709 event pairs, 1379 based on Foata normal form. 14/6297 useless extension candidates. Maximal degree in co-relation 14935. Up to 5773 conditions per place. [2024-06-28 01:57:20,275 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 70 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-06-28 01:57:20,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 88 transitions, 431 flow [2024-06-28 01:57:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:57:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:57:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-06-28 01:57:20,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-06-28 01:57:20,280 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 169 flow. Second operand 5 states and 135 transitions. [2024-06-28 01:57:20,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 88 transitions, 431 flow [2024-06-28 01:57:20,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 412 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:20,285 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 200 flow [2024-06-28 01:57:20,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-28 01:57:20,286 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2024-06-28 01:57:20,286 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 200 flow [2024-06-28 01:57:20,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:20,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:20,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:20,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:57:20,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:20,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:20,288 INFO L85 PathProgramCache]: Analyzing trace with hash 796179606, now seen corresponding path program 1 times [2024-06-28 01:57:20,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:20,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015635558] [2024-06-28 01:57:20,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:20,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:22,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:22,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015635558] [2024-06-28 01:57:22,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015635558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:22,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:22,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:57:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701640713] [2024-06-28 01:57:22,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:22,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:57:22,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:22,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:57:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:57:22,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:57:22,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:22,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:22,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:57:22,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:23,169 INFO L124 PetriNetUnfolderBase]: 3369/5135 cut-off events. [2024-06-28 01:57:23,169 INFO L125 PetriNetUnfolderBase]: For 4066/4066 co-relation queries the response was YES. [2024-06-28 01:57:23,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13187 conditions, 5135 events. 3369/5135 cut-off events. For 4066/4066 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 28082 event pairs, 1630 based on Foata normal form. 2/5133 useless extension candidates. Maximal degree in co-relation 13171. Up to 4839 conditions per place. [2024-06-28 01:57:23,191 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 64 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-06-28 01:57:23,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 81 transitions, 446 flow [2024-06-28 01:57:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:57:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:57:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 01:57:23,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508695652173913 [2024-06-28 01:57:23,194 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 200 flow. Second operand 5 states and 117 transitions. [2024-06-28 01:57:23,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 81 transitions, 446 flow [2024-06-28 01:57:23,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 81 transitions, 414 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:23,200 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 248 flow [2024-06-28 01:57:23,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-06-28 01:57:23,201 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2024-06-28 01:57:23,202 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 248 flow [2024-06-28 01:57:23,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:23,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:23,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:23,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:57:23,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:23,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1088233885, now seen corresponding path program 1 times [2024-06-28 01:57:23,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:23,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058579192] [2024-06-28 01:57:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:25,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:25,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058579192] [2024-06-28 01:57:25,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058579192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:25,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:25,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784681481] [2024-06-28 01:57:25,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:25,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:25,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:25,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:25,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:57:25,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:25,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:25,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:57:25,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:26,926 INFO L124 PetriNetUnfolderBase]: 4189/6376 cut-off events. [2024-06-28 01:57:26,927 INFO L125 PetriNetUnfolderBase]: For 7729/7729 co-relation queries the response was YES. [2024-06-28 01:57:26,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17314 conditions, 6376 events. 4189/6376 cut-off events. For 7729/7729 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 34820 event pairs, 1762 based on Foata normal form. 8/6381 useless extension candidates. Maximal degree in co-relation 17295. Up to 5695 conditions per place. [2024-06-28 01:57:26,954 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 97 selfloop transitions, 16 changer transitions 0/118 dead transitions. [2024-06-28 01:57:26,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 118 transitions, 702 flow [2024-06-28 01:57:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:57:26,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:57:26,956 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 248 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:57:26,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 118 transitions, 702 flow [2024-06-28 01:57:26,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 118 transitions, 684 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:26,964 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 374 flow [2024-06-28 01:57:26,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2024-06-28 01:57:26,965 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2024-06-28 01:57:26,965 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 374 flow [2024-06-28 01:57:26,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:26,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:26,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:26,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:57:26,966 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:26,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash 922918538, now seen corresponding path program 1 times [2024-06-28 01:57:26,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:26,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692489977] [2024-06-28 01:57:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:26,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:29,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:29,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692489977] [2024-06-28 01:57:29,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692489977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:29,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:29,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:29,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709977660] [2024-06-28 01:57:29,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:29,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:29,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:29,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:29,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:29,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:57:29,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 374 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:29,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:29,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:57:29,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:30,853 INFO L124 PetriNetUnfolderBase]: 4251/6388 cut-off events. [2024-06-28 01:57:30,853 INFO L125 PetriNetUnfolderBase]: For 12068/12108 co-relation queries the response was YES. [2024-06-28 01:57:30,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19877 conditions, 6388 events. 4251/6388 cut-off events. For 12068/12108 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 34323 event pairs, 1415 based on Foata normal form. 23/6404 useless extension candidates. Maximal degree in co-relation 19853. Up to 5839 conditions per place. [2024-06-28 01:57:30,889 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 99 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2024-06-28 01:57:30,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 124 transitions, 816 flow [2024-06-28 01:57:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:57:30,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:57:30,891 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 374 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:57:30,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 124 transitions, 816 flow [2024-06-28 01:57:30,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 124 transitions, 812 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:30,905 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 493 flow [2024-06-28 01:57:30,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=493, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2024-06-28 01:57:30,905 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2024-06-28 01:57:30,906 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 493 flow [2024-06-28 01:57:30,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:30,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:30,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:30,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:57:30,906 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:30,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:30,907 INFO L85 PathProgramCache]: Analyzing trace with hash -185118906, now seen corresponding path program 2 times [2024-06-28 01:57:30,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:30,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086810474] [2024-06-28 01:57:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:30,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:32,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:32,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086810474] [2024-06-28 01:57:32,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086810474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:32,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:32,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:32,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226887895] [2024-06-28 01:57:32,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:32,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:32,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:32,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:33,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:57:33,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 493 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:33,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:33,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:57:33,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:34,191 INFO L124 PetriNetUnfolderBase]: 4251/6390 cut-off events. [2024-06-28 01:57:34,191 INFO L125 PetriNetUnfolderBase]: For 16348/16369 co-relation queries the response was YES. [2024-06-28 01:57:34,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21393 conditions, 6390 events. 4251/6390 cut-off events. For 16348/16369 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 34335 event pairs, 1688 based on Foata normal form. 18/6403 useless extension candidates. Maximal degree in co-relation 21365. Up to 5967 conditions per place. [2024-06-28 01:57:34,228 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 96 selfloop transitions, 18 changer transitions 0/119 dead transitions. [2024-06-28 01:57:34,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 119 transitions, 856 flow [2024-06-28 01:57:34,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:57:34,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2024-06-28 01:57:34,230 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 493 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:57:34,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 119 transitions, 856 flow [2024-06-28 01:57:34,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 119 transitions, 817 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:34,248 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 546 flow [2024-06-28 01:57:34,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2024-06-28 01:57:34,249 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2024-06-28 01:57:34,249 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 546 flow [2024-06-28 01:57:34,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:34,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:34,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:34,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:57:34,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:34,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash -185810640, now seen corresponding path program 1 times [2024-06-28 01:57:34,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:34,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261026429] [2024-06-28 01:57:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:34,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:36,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:36,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261026429] [2024-06-28 01:57:36,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261026429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:36,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:36,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:36,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200856496] [2024-06-28 01:57:36,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:36,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:36,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:36,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:36,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:36,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:57:36,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 546 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:36,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:36,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:57:36,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:38,351 INFO L124 PetriNetUnfolderBase]: 4621/6884 cut-off events. [2024-06-28 01:57:38,351 INFO L125 PetriNetUnfolderBase]: For 19207/19228 co-relation queries the response was YES. [2024-06-28 01:57:38,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23541 conditions, 6884 events. 4621/6884 cut-off events. For 19207/19228 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 36731 event pairs, 1544 based on Foata normal form. 22/6901 useless extension candidates. Maximal degree in co-relation 23511. Up to 5921 conditions per place. [2024-06-28 01:57:38,390 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 110 selfloop transitions, 36 changer transitions 0/151 dead transitions. [2024-06-28 01:57:38,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 151 transitions, 1104 flow [2024-06-28 01:57:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:57:38,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 01:57:38,394 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 546 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:57:38,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 151 transitions, 1104 flow [2024-06-28 01:57:38,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 151 transitions, 1059 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:38,409 INFO L231 Difference]: Finished difference. Result has 81 places, 94 transitions, 710 flow [2024-06-28 01:57:38,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=710, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2024-06-28 01:57:38,410 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2024-06-28 01:57:38,410 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 710 flow [2024-06-28 01:57:38,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:38,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:38,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:38,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:57:38,411 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:38,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1686271824, now seen corresponding path program 2 times [2024-06-28 01:57:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382002934] [2024-06-28 01:57:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:40,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:40,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382002934] [2024-06-28 01:57:40,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382002934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:40,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:40,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:40,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912815681] [2024-06-28 01:57:40,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:40,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:40,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:40,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:40,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:40,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:57:40,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 94 transitions, 710 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:40,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:40,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:57:40,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:42,545 INFO L124 PetriNetUnfolderBase]: 4815/7186 cut-off events. [2024-06-28 01:57:42,545 INFO L125 PetriNetUnfolderBase]: For 26867/26888 co-relation queries the response was YES. [2024-06-28 01:57:42,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27210 conditions, 7186 events. 4815/7186 cut-off events. For 26867/26888 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 38796 event pairs, 1627 based on Foata normal form. 22/7203 useless extension candidates. Maximal degree in co-relation 27177. Up to 5715 conditions per place. [2024-06-28 01:57:42,586 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 116 selfloop transitions, 45 changer transitions 0/166 dead transitions. [2024-06-28 01:57:42,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 166 transitions, 1354 flow [2024-06-28 01:57:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:57:42,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-28 01:57:42,589 INFO L175 Difference]: Start difference. First operand has 81 places, 94 transitions, 710 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:57:42,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 166 transitions, 1354 flow [2024-06-28 01:57:42,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 166 transitions, 1295 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:42,633 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 923 flow [2024-06-28 01:57:42,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=923, PETRI_PLACES=87, PETRI_TRANSITIONS=108} [2024-06-28 01:57:42,633 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 37 predicate places. [2024-06-28 01:57:42,634 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 923 flow [2024-06-28 01:57:42,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:42,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:42,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:42,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:57:42,634 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:42,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:42,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2115642174, now seen corresponding path program 1 times [2024-06-28 01:57:42,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:42,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761444773] [2024-06-28 01:57:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:45,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:45,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761444773] [2024-06-28 01:57:45,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761444773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:45,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:45,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:45,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187492390] [2024-06-28 01:57:45,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:45,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:45,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:45,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:45,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:45,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:57:45,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 108 transitions, 923 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:45,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:45,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:57:45,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:47,417 INFO L124 PetriNetUnfolderBase]: 5035/7602 cut-off events. [2024-06-28 01:57:47,436 INFO L125 PetriNetUnfolderBase]: For 32982/32982 co-relation queries the response was YES. [2024-06-28 01:57:47,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30468 conditions, 7602 events. 5035/7602 cut-off events. For 32982/32982 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 42227 event pairs, 1690 based on Foata normal form. 16/7615 useless extension candidates. Maximal degree in co-relation 30431. Up to 6559 conditions per place. [2024-06-28 01:57:47,496 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 150 selfloop transitions, 20 changer transitions 0/175 dead transitions. [2024-06-28 01:57:47,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 175 transitions, 1529 flow [2024-06-28 01:57:47,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:57:47,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:57:47,498 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 923 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:57:47,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 175 transitions, 1529 flow [2024-06-28 01:57:47,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 175 transitions, 1485 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:47,544 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 955 flow [2024-06-28 01:57:47,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=955, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2024-06-28 01:57:47,545 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2024-06-28 01:57:47,545 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 955 flow [2024-06-28 01:57:47,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:47,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:47,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:47,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:57:47,546 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:47,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:47,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1927108369, now seen corresponding path program 1 times [2024-06-28 01:57:47,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:47,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789445051] [2024-06-28 01:57:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:47,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:50,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789445051] [2024-06-28 01:57:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789445051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:50,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:50,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820752908] [2024-06-28 01:57:50,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:50,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:50,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:50,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:57:50,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 955 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:50,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:50,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:57:50,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:52,903 INFO L124 PetriNetUnfolderBase]: 6231/9064 cut-off events. [2024-06-28 01:57:52,904 INFO L125 PetriNetUnfolderBase]: For 35447/35513 co-relation queries the response was YES. [2024-06-28 01:57:52,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35261 conditions, 9064 events. 6231/9064 cut-off events. For 35447/35513 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 48908 event pairs, 1241 based on Foata normal form. 50/9107 useless extension candidates. Maximal degree in co-relation 35221. Up to 6637 conditions per place. [2024-06-28 01:57:52,969 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 165 selfloop transitions, 51 changer transitions 0/221 dead transitions. [2024-06-28 01:57:52,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 221 transitions, 1835 flow [2024-06-28 01:57:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:57:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:57:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 01:57:52,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558695652173913 [2024-06-28 01:57:52,971 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 955 flow. Second operand 10 states and 257 transitions. [2024-06-28 01:57:52,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 221 transitions, 1835 flow [2024-06-28 01:57:53,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 221 transitions, 1791 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:53,015 INFO L231 Difference]: Finished difference. Result has 100 places, 122 transitions, 1146 flow [2024-06-28 01:57:53,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1146, PETRI_PLACES=100, PETRI_TRANSITIONS=122} [2024-06-28 01:57:53,016 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 50 predicate places. [2024-06-28 01:57:53,016 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 122 transitions, 1146 flow [2024-06-28 01:57:53,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:53,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:53,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:53,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:57:53,017 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:53,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1443716685, now seen corresponding path program 2 times [2024-06-28 01:57:53,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:53,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631553765] [2024-06-28 01:57:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:53,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:55,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:55,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631553765] [2024-06-28 01:57:55,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631553765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:55,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:55,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:55,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259363442] [2024-06-28 01:57:55,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:55,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:55,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:55,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:55,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:57:55,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 122 transitions, 1146 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:55,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:55,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:57:55,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:57,719 INFO L124 PetriNetUnfolderBase]: 6635/9698 cut-off events. [2024-06-28 01:57:57,720 INFO L125 PetriNetUnfolderBase]: For 47989/48013 co-relation queries the response was YES. [2024-06-28 01:57:57,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40862 conditions, 9698 events. 6635/9698 cut-off events. For 47989/48013 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 53416 event pairs, 1813 based on Foata normal form. 32/9725 useless extension candidates. Maximal degree in co-relation 40819. Up to 7809 conditions per place. [2024-06-28 01:57:57,788 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 159 selfloop transitions, 45 changer transitions 0/209 dead transitions. [2024-06-28 01:57:57,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 209 transitions, 1946 flow [2024-06-28 01:57:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:57:57,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538647342995169 [2024-06-28 01:57:57,791 INFO L175 Difference]: Start difference. First operand has 100 places, 122 transitions, 1146 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:57:57,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 209 transitions, 1946 flow [2024-06-28 01:57:57,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 209 transitions, 1834 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:57,885 INFO L231 Difference]: Finished difference. Result has 105 places, 132 transitions, 1265 flow [2024-06-28 01:57:57,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1265, PETRI_PLACES=105, PETRI_TRANSITIONS=132} [2024-06-28 01:57:57,886 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2024-06-28 01:57:57,887 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 132 transitions, 1265 flow [2024-06-28 01:57:57,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:57,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:57,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:57,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:57:57,887 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:57:57,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2102390115, now seen corresponding path program 3 times [2024-06-28 01:57:57,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:57,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32666186] [2024-06-28 01:57:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:57,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:00,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:00,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32666186] [2024-06-28 01:58:00,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32666186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:00,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:00,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:00,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937166610] [2024-06-28 01:58:00,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:00,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:00,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:00,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:00,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:00,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:00,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 132 transitions, 1265 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:00,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:00,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:00,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:02,589 INFO L124 PetriNetUnfolderBase]: 6815/9942 cut-off events. [2024-06-28 01:58:02,589 INFO L125 PetriNetUnfolderBase]: For 54209/54233 co-relation queries the response was YES. [2024-06-28 01:58:02,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43151 conditions, 9942 events. 6815/9942 cut-off events. For 54209/54233 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 54844 event pairs, 1717 based on Foata normal form. 32/9969 useless extension candidates. Maximal degree in co-relation 43105. Up to 7917 conditions per place. [2024-06-28 01:58:02,658 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 175 selfloop transitions, 54 changer transitions 0/234 dead transitions. [2024-06-28 01:58:02,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 234 transitions, 2108 flow [2024-06-28 01:58:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:58:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:58:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-06-28 01:58:02,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355731225296443 [2024-06-28 01:58:02,662 INFO L175 Difference]: Start difference. First operand has 105 places, 132 transitions, 1265 flow. Second operand 11 states and 271 transitions. [2024-06-28 01:58:02,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 234 transitions, 2108 flow [2024-06-28 01:58:02,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 234 transitions, 2030 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:02,755 INFO L231 Difference]: Finished difference. Result has 111 places, 137 transitions, 1370 flow [2024-06-28 01:58:02,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1370, PETRI_PLACES=111, PETRI_TRANSITIONS=137} [2024-06-28 01:58:02,756 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2024-06-28 01:58:02,756 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 137 transitions, 1370 flow [2024-06-28 01:58:02,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:02,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:02,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:02,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:58:02,756 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:02,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1160672803, now seen corresponding path program 4 times [2024-06-28 01:58:02,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:02,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700243187] [2024-06-28 01:58:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:02,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:05,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:05,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700243187] [2024-06-28 01:58:05,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700243187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:05,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:05,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847432740] [2024-06-28 01:58:05,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:05,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:05,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:05,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:05,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:05,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:05,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 137 transitions, 1370 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:05,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:05,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:05,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:07,616 INFO L124 PetriNetUnfolderBase]: 7535/10986 cut-off events. [2024-06-28 01:58:07,616 INFO L125 PetriNetUnfolderBase]: For 62581/62605 co-relation queries the response was YES. [2024-06-28 01:58:07,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48067 conditions, 10986 events. 7535/10986 cut-off events. For 62581/62605 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 61443 event pairs, 1781 based on Foata normal form. 32/11013 useless extension candidates. Maximal degree in co-relation 48019. Up to 7567 conditions per place. [2024-06-28 01:58:07,700 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 168 selfloop transitions, 77 changer transitions 0/250 dead transitions. [2024-06-28 01:58:07,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 250 transitions, 2392 flow [2024-06-28 01:58:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-28 01:58:07,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673913043478261 [2024-06-28 01:58:07,702 INFO L175 Difference]: Start difference. First operand has 111 places, 137 transitions, 1370 flow. Second operand 10 states and 261 transitions. [2024-06-28 01:58:07,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 250 transitions, 2392 flow [2024-06-28 01:58:07,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 250 transitions, 2254 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 01:58:07,801 INFO L231 Difference]: Finished difference. Result has 114 places, 151 transitions, 1600 flow [2024-06-28 01:58:07,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1600, PETRI_PLACES=114, PETRI_TRANSITIONS=151} [2024-06-28 01:58:07,804 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 64 predicate places. [2024-06-28 01:58:07,804 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 151 transitions, 1600 flow [2024-06-28 01:58:07,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:07,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:07,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:07,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:58:07,805 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:07,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2002745042, now seen corresponding path program 1 times [2024-06-28 01:58:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:07,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574593282] [2024-06-28 01:58:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:09,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574593282] [2024-06-28 01:58:09,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574593282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:09,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:09,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:58:09,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093513571] [2024-06-28 01:58:09,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:09,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:58:09,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:09,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:58:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:58:09,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:09,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 151 transitions, 1600 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:09,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:09,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:09,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:11,117 INFO L124 PetriNetUnfolderBase]: 7529/11208 cut-off events. [2024-06-28 01:58:11,117 INFO L125 PetriNetUnfolderBase]: For 76063/76063 co-relation queries the response was YES. [2024-06-28 01:58:11,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51733 conditions, 11208 events. 7529/11208 cut-off events. For 76063/76063 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 65460 event pairs, 2741 based on Foata normal form. 2/11207 useless extension candidates. Maximal degree in co-relation 51682. Up to 10556 conditions per place. [2024-06-28 01:58:11,189 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 162 selfloop transitions, 10 changer transitions 0/177 dead transitions. [2024-06-28 01:58:11,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 177 transitions, 2074 flow [2024-06-28 01:58:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:58:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:58:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-28 01:58:11,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652173913043478 [2024-06-28 01:58:11,191 INFO L175 Difference]: Start difference. First operand has 114 places, 151 transitions, 1600 flow. Second operand 5 states and 107 transitions. [2024-06-28 01:58:11,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 177 transitions, 2074 flow [2024-06-28 01:58:11,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 177 transitions, 1935 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:11,313 INFO L231 Difference]: Finished difference. Result has 115 places, 158 transitions, 1595 flow [2024-06-28 01:58:11,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1595, PETRI_PLACES=115, PETRI_TRANSITIONS=158} [2024-06-28 01:58:11,314 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 65 predicate places. [2024-06-28 01:58:11,314 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 158 transitions, 1595 flow [2024-06-28 01:58:11,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:11,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:11,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:11,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:58:11,315 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:11,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:11,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1594711961, now seen corresponding path program 1 times [2024-06-28 01:58:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:11,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811707626] [2024-06-28 01:58:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:11,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:14,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:14,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811707626] [2024-06-28 01:58:14,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811707626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:14,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:14,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523845088] [2024-06-28 01:58:14,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:14,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:14,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:14,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:14,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 158 transitions, 1595 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:14,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:14,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:14,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:16,547 INFO L124 PetriNetUnfolderBase]: 7579/11034 cut-off events. [2024-06-28 01:58:16,548 INFO L125 PetriNetUnfolderBase]: For 75843/75909 co-relation queries the response was YES. [2024-06-28 01:58:16,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51007 conditions, 11034 events. 7579/11034 cut-off events. For 75843/75909 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 61900 event pairs, 1793 based on Foata normal form. 38/11065 useless extension candidates. Maximal degree in co-relation 50953. Up to 10205 conditions per place. [2024-06-28 01:58:16,640 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 186 selfloop transitions, 29 changer transitions 0/220 dead transitions. [2024-06-28 01:58:16,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 220 transitions, 2379 flow [2024-06-28 01:58:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:58:16,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-28 01:58:16,642 INFO L175 Difference]: Start difference. First operand has 115 places, 158 transitions, 1595 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:58:16,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 220 transitions, 2379 flow [2024-06-28 01:58:16,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 220 transitions, 2343 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:16,779 INFO L231 Difference]: Finished difference. Result has 121 places, 163 transitions, 1734 flow [2024-06-28 01:58:16,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1734, PETRI_PLACES=121, PETRI_TRANSITIONS=163} [2024-06-28 01:58:16,780 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 71 predicate places. [2024-06-28 01:58:16,780 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 163 transitions, 1734 flow [2024-06-28 01:58:16,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:16,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:16,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:16,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:58:16,781 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:16,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:16,781 INFO L85 PathProgramCache]: Analyzing trace with hash -865166419, now seen corresponding path program 2 times [2024-06-28 01:58:16,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:16,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27357282] [2024-06-28 01:58:16,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:16,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:19,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:19,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27357282] [2024-06-28 01:58:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27357282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:19,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:19,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26187402] [2024-06-28 01:58:19,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:19,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:19,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:19,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 163 transitions, 1734 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:19,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:19,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:19,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:21,870 INFO L124 PetriNetUnfolderBase]: 7629/11108 cut-off events. [2024-06-28 01:58:21,871 INFO L125 PetriNetUnfolderBase]: For 85629/85695 co-relation queries the response was YES. [2024-06-28 01:58:21,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52699 conditions, 11108 events. 7629/11108 cut-off events. For 85629/85695 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 62298 event pairs, 2073 based on Foata normal form. 38/11139 useless extension candidates. Maximal degree in co-relation 52642. Up to 10419 conditions per place. [2024-06-28 01:58:21,967 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 188 selfloop transitions, 26 changer transitions 0/219 dead transitions. [2024-06-28 01:58:21,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 219 transitions, 2388 flow [2024-06-28 01:58:21,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:58:21,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:58:21,969 INFO L175 Difference]: Start difference. First operand has 121 places, 163 transitions, 1734 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:58:21,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 219 transitions, 2388 flow [2024-06-28 01:58:22,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 219 transitions, 2310 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:22,163 INFO L231 Difference]: Finished difference. Result has 125 places, 165 transitions, 1765 flow [2024-06-28 01:58:22,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1765, PETRI_PLACES=125, PETRI_TRANSITIONS=165} [2024-06-28 01:58:22,163 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 75 predicate places. [2024-06-28 01:58:22,163 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 165 transitions, 1765 flow [2024-06-28 01:58:22,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:22,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:22,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:22,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:58:22,164 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:22,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1805547099, now seen corresponding path program 3 times [2024-06-28 01:58:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:22,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94743975] [2024-06-28 01:58:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:22,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:25,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:25,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94743975] [2024-06-28 01:58:25,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94743975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:25,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:25,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:25,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497864913] [2024-06-28 01:58:25,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:25,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:25,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:25,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:25,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:25,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 165 transitions, 1765 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:25,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:25,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:25,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:27,390 INFO L124 PetriNetUnfolderBase]: 7629/11110 cut-off events. [2024-06-28 01:58:27,390 INFO L125 PetriNetUnfolderBase]: For 86466/86490 co-relation queries the response was YES. [2024-06-28 01:58:27,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52797 conditions, 11110 events. 7629/11110 cut-off events. For 86466/86490 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 62620 event pairs, 2492 based on Foata normal form. 20/11125 useless extension candidates. Maximal degree in co-relation 52738. Up to 10547 conditions per place. [2024-06-28 01:58:27,467 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 188 selfloop transitions, 22 changer transitions 0/215 dead transitions. [2024-06-28 01:58:27,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 215 transitions, 2371 flow [2024-06-28 01:58:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:27,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:58:27,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-28 01:58:27,469 INFO L175 Difference]: Start difference. First operand has 125 places, 165 transitions, 1765 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:58:27,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 215 transitions, 2371 flow [2024-06-28 01:58:27,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 215 transitions, 2286 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:27,619 INFO L231 Difference]: Finished difference. Result has 127 places, 168 transitions, 1800 flow [2024-06-28 01:58:27,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1800, PETRI_PLACES=127, PETRI_TRANSITIONS=168} [2024-06-28 01:58:27,619 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2024-06-28 01:58:27,619 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 168 transitions, 1800 flow [2024-06-28 01:58:27,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:27,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:27,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:27,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:58:27,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:27,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:27,620 INFO L85 PathProgramCache]: Analyzing trace with hash -749575231, now seen corresponding path program 1 times [2024-06-28 01:58:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073659667] [2024-06-28 01:58:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:27,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:30,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:30,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073659667] [2024-06-28 01:58:30,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073659667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:30,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:30,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:30,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143096518] [2024-06-28 01:58:30,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:30,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:30,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:30,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:30,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:30,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 168 transitions, 1800 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:30,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:30,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:30,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:33,795 INFO L124 PetriNetUnfolderBase]: 7907/11520 cut-off events. [2024-06-28 01:58:33,796 INFO L125 PetriNetUnfolderBase]: For 95454/95478 co-relation queries the response was YES. [2024-06-28 01:58:33,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54714 conditions, 11520 events. 7907/11520 cut-off events. For 95454/95478 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 64775 event pairs, 1922 based on Foata normal form. 32/11547 useless extension candidates. Maximal degree in co-relation 54654. Up to 9838 conditions per place. [2024-06-28 01:58:33,887 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 195 selfloop transitions, 44 changer transitions 0/244 dead transitions. [2024-06-28 01:58:33,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 244 transitions, 2666 flow [2024-06-28 01:58:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:58:33,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241545893719807 [2024-06-28 01:58:33,889 INFO L175 Difference]: Start difference. First operand has 127 places, 168 transitions, 1800 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:58:33,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 244 transitions, 2666 flow [2024-06-28 01:58:34,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 244 transitions, 2588 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:34,058 INFO L231 Difference]: Finished difference. Result has 131 places, 170 transitions, 1862 flow [2024-06-28 01:58:34,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1862, PETRI_PLACES=131, PETRI_TRANSITIONS=170} [2024-06-28 01:58:34,059 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 81 predicate places. [2024-06-28 01:58:34,059 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 170 transitions, 1862 flow [2024-06-28 01:58:34,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:34,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:34,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:34,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:58:34,060 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:34,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:34,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1612835421, now seen corresponding path program 2 times [2024-06-28 01:58:34,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:34,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073689531] [2024-06-28 01:58:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:37,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073689531] [2024-06-28 01:58:37,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073689531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:37,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:37,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403843604] [2024-06-28 01:58:37,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:37,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:37,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:37,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:37,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:37,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:37,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 170 transitions, 1862 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:37,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:37,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:37,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:40,322 INFO L124 PetriNetUnfolderBase]: 8185/11958 cut-off events. [2024-06-28 01:58:40,322 INFO L125 PetriNetUnfolderBase]: For 107793/107817 co-relation queries the response was YES. [2024-06-28 01:58:40,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58048 conditions, 11958 events. 8185/11958 cut-off events. For 107793/107817 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 67976 event pairs, 1915 based on Foata normal form. 32/11985 useless extension candidates. Maximal degree in co-relation 57987. Up to 10092 conditions per place. [2024-06-28 01:58:40,441 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 193 selfloop transitions, 49 changer transitions 0/247 dead transitions. [2024-06-28 01:58:40,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 247 transitions, 2782 flow [2024-06-28 01:58:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:40,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:58:40,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-06-28 01:58:40,443 INFO L175 Difference]: Start difference. First operand has 131 places, 170 transitions, 1862 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:58:40,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 247 transitions, 2782 flow [2024-06-28 01:58:40,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 247 transitions, 2686 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:58:40,667 INFO L231 Difference]: Finished difference. Result has 132 places, 172 transitions, 1916 flow [2024-06-28 01:58:40,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1916, PETRI_PLACES=132, PETRI_TRANSITIONS=172} [2024-06-28 01:58:40,668 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 82 predicate places. [2024-06-28 01:58:40,668 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 172 transitions, 1916 flow [2024-06-28 01:58:40,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:40,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:40,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:40,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:58:40,669 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:40,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1612538751, now seen corresponding path program 3 times [2024-06-28 01:58:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:40,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847532223] [2024-06-28 01:58:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:40,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:44,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:44,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847532223] [2024-06-28 01:58:44,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847532223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:44,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:44,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:44,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630099851] [2024-06-28 01:58:44,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:44,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:44,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:44,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:44,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:44,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:44,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 172 transitions, 1916 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:44,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:44,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:44,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:46,600 INFO L124 PetriNetUnfolderBase]: 8645/12630 cut-off events. [2024-06-28 01:58:46,600 INFO L125 PetriNetUnfolderBase]: For 119404/119428 co-relation queries the response was YES. [2024-06-28 01:58:46,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61781 conditions, 12630 events. 8645/12630 cut-off events. For 119404/119428 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 72449 event pairs, 1877 based on Foata normal form. 32/12657 useless extension candidates. Maximal degree in co-relation 61719. Up to 9474 conditions per place. [2024-06-28 01:58:46,712 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 195 selfloop transitions, 55 changer transitions 0/255 dead transitions. [2024-06-28 01:58:46,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 255 transitions, 2938 flow [2024-06-28 01:58:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:58:46,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2024-06-28 01:58:46,714 INFO L175 Difference]: Start difference. First operand has 132 places, 172 transitions, 1916 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:58:46,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 255 transitions, 2938 flow [2024-06-28 01:58:46,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 255 transitions, 2822 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:46,963 INFO L231 Difference]: Finished difference. Result has 134 places, 175 transitions, 1977 flow [2024-06-28 01:58:46,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1977, PETRI_PLACES=134, PETRI_TRANSITIONS=175} [2024-06-28 01:58:46,964 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 84 predicate places. [2024-06-28 01:58:46,964 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 175 transitions, 1977 flow [2024-06-28 01:58:46,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:46,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:46,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:46,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:58:46,965 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:46,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:46,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1135343948, now seen corresponding path program 1 times [2024-06-28 01:58:46,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:46,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082620864] [2024-06-28 01:58:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:50,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:50,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082620864] [2024-06-28 01:58:50,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082620864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:50,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:50,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:58:50,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043040646] [2024-06-28 01:58:50,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:50,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:58:50,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:58:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:58:50,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:50,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 175 transitions, 1977 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:50,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:50,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:50,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:54,249 INFO L124 PetriNetUnfolderBase]: 12233/17888 cut-off events. [2024-06-28 01:58:54,249 INFO L125 PetriNetUnfolderBase]: For 208656/208720 co-relation queries the response was YES. [2024-06-28 01:58:54,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86978 conditions, 17888 events. 12233/17888 cut-off events. For 208656/208720 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 109685 event pairs, 2071 based on Foata normal form. 98/17979 useless extension candidates. Maximal degree in co-relation 86915. Up to 8348 conditions per place. [2024-06-28 01:58:54,429 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 236 selfloop transitions, 64 changer transitions 0/305 dead transitions. [2024-06-28 01:58:54,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 305 transitions, 3431 flow [2024-06-28 01:58:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:54,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 277 transitions. [2024-06-28 01:58:54,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021739130434782 [2024-06-28 01:58:54,431 INFO L175 Difference]: Start difference. First operand has 134 places, 175 transitions, 1977 flow. Second operand 10 states and 277 transitions. [2024-06-28 01:58:54,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 305 transitions, 3431 flow [2024-06-28 01:58:55,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 305 transitions, 3340 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:55,054 INFO L231 Difference]: Finished difference. Result has 142 places, 178 transitions, 2124 flow [2024-06-28 01:58:55,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2124, PETRI_PLACES=142, PETRI_TRANSITIONS=178} [2024-06-28 01:58:55,056 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 92 predicate places. [2024-06-28 01:58:55,056 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 178 transitions, 2124 flow [2024-06-28 01:58:55,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:55,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:55,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:55,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:58:55,056 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:58:55,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:55,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1133466278, now seen corresponding path program 2 times [2024-06-28 01:58:55,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:55,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484655713] [2024-06-28 01:58:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:55,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:58,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:58,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484655713] [2024-06-28 01:58:58,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484655713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:58,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:58,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:58:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188904339] [2024-06-28 01:58:58,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:58,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:58:58,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:58:58,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:58:58,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:58:58,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 178 transitions, 2124 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:58,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:58,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:58:58,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:03,042 INFO L124 PetriNetUnfolderBase]: 13477/20056 cut-off events. [2024-06-28 01:59:03,043 INFO L125 PetriNetUnfolderBase]: For 256459/256523 co-relation queries the response was YES. [2024-06-28 01:59:03,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97345 conditions, 20056 events. 13477/20056 cut-off events. For 256459/256523 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 128197 event pairs, 3443 based on Foata normal form. 114/20163 useless extension candidates. Maximal degree in co-relation 97278. Up to 14882 conditions per place. [2024-06-28 01:59:03,271 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 228 selfloop transitions, 64 changer transitions 0/297 dead transitions. [2024-06-28 01:59:03,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 297 transitions, 3352 flow [2024-06-28 01:59:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:59:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:59:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 286 transitions. [2024-06-28 01:59:03,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-28 01:59:03,273 INFO L175 Difference]: Start difference. First operand has 142 places, 178 transitions, 2124 flow. Second operand 11 states and 286 transitions. [2024-06-28 01:59:03,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 297 transitions, 3352 flow [2024-06-28 01:59:03,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 297 transitions, 3226 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:03,852 INFO L231 Difference]: Finished difference. Result has 147 places, 179 transitions, 2172 flow [2024-06-28 01:59:03,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2172, PETRI_PLACES=147, PETRI_TRANSITIONS=179} [2024-06-28 01:59:03,853 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 97 predicate places. [2024-06-28 01:59:03,854 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 179 transitions, 2172 flow [2024-06-28 01:59:03,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:03,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:03,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:03,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:59:03,854 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:03,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:03,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1133469998, now seen corresponding path program 3 times [2024-06-28 01:59:03,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:03,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411641393] [2024-06-28 01:59:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:03,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:06,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:06,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411641393] [2024-06-28 01:59:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411641393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:06,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:06,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:59:06,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844097385] [2024-06-28 01:59:06,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:06,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:59:06,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:59:06,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:59:07,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:59:07,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 179 transitions, 2172 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:07,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:07,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:59:07,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:12,010 INFO L124 PetriNetUnfolderBase]: 15721/23316 cut-off events. [2024-06-28 01:59:12,011 INFO L125 PetriNetUnfolderBase]: For 294107/294171 co-relation queries the response was YES. [2024-06-28 01:59:12,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111878 conditions, 23316 events. 15721/23316 cut-off events. For 294107/294171 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 152078 event pairs, 3886 based on Foata normal form. 98/23407 useless extension candidates. Maximal degree in co-relation 111810. Up to 14556 conditions per place. [2024-06-28 01:59:12,220 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 241 selfloop transitions, 64 changer transitions 0/310 dead transitions. [2024-06-28 01:59:12,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 310 transitions, 3546 flow [2024-06-28 01:59:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:59:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:59:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 296 transitions. [2024-06-28 01:59:12,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849802371541502 [2024-06-28 01:59:12,236 INFO L175 Difference]: Start difference. First operand has 147 places, 179 transitions, 2172 flow. Second operand 11 states and 296 transitions. [2024-06-28 01:59:12,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 310 transitions, 3546 flow [2024-06-28 01:59:12,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 310 transitions, 3400 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:59:12,921 INFO L231 Difference]: Finished difference. Result has 150 places, 181 transitions, 2231 flow [2024-06-28 01:59:12,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2231, PETRI_PLACES=150, PETRI_TRANSITIONS=181} [2024-06-28 01:59:12,922 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 100 predicate places. [2024-06-28 01:59:12,935 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 181 transitions, 2231 flow [2024-06-28 01:59:12,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:12,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:12,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:12,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:59:12,935 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:12,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash -137379396, now seen corresponding path program 4 times [2024-06-28 01:59:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332382778] [2024-06-28 01:59:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:16,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:16,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332382778] [2024-06-28 01:59:16,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332382778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:16,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:16,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:59:16,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274380139] [2024-06-28 01:59:16,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:16,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:59:16,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:59:16,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:59:16,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:59:16,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 181 transitions, 2231 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:16,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:16,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:59:16,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:22,148 INFO L124 PetriNetUnfolderBase]: 16965/25686 cut-off events. [2024-06-28 01:59:22,148 INFO L125 PetriNetUnfolderBase]: For 332846/332870 co-relation queries the response was YES. [2024-06-28 01:59:22,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120536 conditions, 25686 events. 16965/25686 cut-off events. For 332846/332870 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 174674 event pairs, 6292 based on Foata normal form. 96/25777 useless extension candidates. Maximal degree in co-relation 120466. Up to 21210 conditions per place. [2024-06-28 01:59:22,500 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 217 selfloop transitions, 55 changer transitions 0/277 dead transitions. [2024-06-28 01:59:22,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 277 transitions, 3269 flow [2024-06-28 01:59:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:59:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:59:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-28 01:59:22,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478260869565217 [2024-06-28 01:59:22,502 INFO L175 Difference]: Start difference. First operand has 150 places, 181 transitions, 2231 flow. Second operand 10 states and 252 transitions. [2024-06-28 01:59:22,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 277 transitions, 3269 flow [2024-06-28 01:59:23,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 277 transitions, 3124 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:59:23,242 INFO L231 Difference]: Finished difference. Result has 152 places, 183 transitions, 2273 flow [2024-06-28 01:59:23,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2273, PETRI_PLACES=152, PETRI_TRANSITIONS=183} [2024-06-28 01:59:23,242 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 102 predicate places. [2024-06-28 01:59:23,242 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 183 transitions, 2273 flow [2024-06-28 01:59:23,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:23,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:23,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:23,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:59:23,243 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:23,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:23,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1762001202, now seen corresponding path program 1 times [2024-06-28 01:59:23,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:23,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356411102] [2024-06-28 01:59:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:26,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356411102] [2024-06-28 01:59:26,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356411102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:26,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:26,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:59:26,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559413758] [2024-06-28 01:59:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:26,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:59:26,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:26,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:59:26,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:59:26,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:59:26,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 183 transitions, 2273 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:26,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:26,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:59:26,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:32,898 INFO L124 PetriNetUnfolderBase]: 18109/27446 cut-off events. [2024-06-28 01:59:32,899 INFO L125 PetriNetUnfolderBase]: For 366865/366889 co-relation queries the response was YES. [2024-06-28 01:59:33,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127913 conditions, 27446 events. 18109/27446 cut-off events. For 366865/366889 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 189223 event pairs, 6657 based on Foata normal form. 96/27537 useless extension candidates. Maximal degree in co-relation 127842. Up to 22954 conditions per place. [2024-06-28 01:59:33,151 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 236 selfloop transitions, 60 changer transitions 0/301 dead transitions. [2024-06-28 01:59:33,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 301 transitions, 3445 flow [2024-06-28 01:59:33,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:59:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:59:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 301 transitions. [2024-06-28 01:59:33,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452898550724637 [2024-06-28 01:59:33,161 INFO L175 Difference]: Start difference. First operand has 152 places, 183 transitions, 2273 flow. Second operand 12 states and 301 transitions. [2024-06-28 01:59:33,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 301 transitions, 3445 flow [2024-06-28 01:59:34,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 301 transitions, 3286 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:59:34,054 INFO L231 Difference]: Finished difference. Result has 156 places, 185 transitions, 2315 flow [2024-06-28 01:59:34,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2315, PETRI_PLACES=156, PETRI_TRANSITIONS=185} [2024-06-28 01:59:34,055 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 106 predicate places. [2024-06-28 01:59:34,055 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 185 transitions, 2315 flow [2024-06-28 01:59:34,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:34,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:34,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:34,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:59:34,056 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:34,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1761993762, now seen corresponding path program 2 times [2024-06-28 01:59:34,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:34,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188389910] [2024-06-28 01:59:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:34,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:37,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:37,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188389910] [2024-06-28 01:59:37,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188389910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:37,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:59:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747116002] [2024-06-28 01:59:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:37,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:59:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:59:37,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:59:37,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:59:37,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 185 transitions, 2315 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:37,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:37,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:59:37,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:43,837 INFO L124 PetriNetUnfolderBase]: 19193/29186 cut-off events. [2024-06-28 01:59:43,837 INFO L125 PetriNetUnfolderBase]: For 388618/388642 co-relation queries the response was YES. [2024-06-28 01:59:44,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134284 conditions, 29186 events. 19193/29186 cut-off events. For 388618/388642 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 204369 event pairs, 5836 based on Foata normal form. 80/29261 useless extension candidates. Maximal degree in co-relation 134212. Up to 20626 conditions per place. [2024-06-28 01:59:44,253 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 240 selfloop transitions, 69 changer transitions 0/314 dead transitions. [2024-06-28 01:59:44,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 314 transitions, 3648 flow [2024-06-28 01:59:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:59:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:59:44,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 306 transitions. [2024-06-28 01:59:44,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 01:59:44,259 INFO L175 Difference]: Start difference. First operand has 156 places, 185 transitions, 2315 flow. Second operand 12 states and 306 transitions. [2024-06-28 01:59:44,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 314 transitions, 3648 flow [2024-06-28 01:59:45,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 314 transitions, 3475 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 01:59:45,563 INFO L231 Difference]: Finished difference. Result has 159 places, 192 transitions, 2473 flow [2024-06-28 01:59:45,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2473, PETRI_PLACES=159, PETRI_TRANSITIONS=192} [2024-06-28 01:59:45,564 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 109 predicate places. [2024-06-28 01:59:45,564 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 192 transitions, 2473 flow [2024-06-28 01:59:45,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:45,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:45,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:45,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:59:45,565 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:45,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:45,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1767719214, now seen corresponding path program 5 times [2024-06-28 01:59:45,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:45,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781443462] [2024-06-28 01:59:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:45,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:49,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:49,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781443462] [2024-06-28 01:59:49,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781443462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:49,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:49,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:59:49,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816344064] [2024-06-28 01:59:49,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:49,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:59:49,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:49,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:59:49,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:59:49,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-28 01:59:49,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 192 transitions, 2473 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:49,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:49,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-28 01:59:49,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:55,266 INFO L124 PetriNetUnfolderBase]: 20225/30850 cut-off events. [2024-06-28 01:59:55,267 INFO L125 PetriNetUnfolderBase]: For 410358/410382 co-relation queries the response was YES. [2024-06-28 01:59:55,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140636 conditions, 30850 events. 20225/30850 cut-off events. For 410358/410382 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 217883 event pairs, 7122 based on Foata normal form. 80/30925 useless extension candidates. Maximal degree in co-relation 140562. Up to 20658 conditions per place. [2024-06-28 01:59:55,874 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 234 selfloop transitions, 58 changer transitions 0/297 dead transitions. [2024-06-28 01:59:55,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 297 transitions, 3749 flow [2024-06-28 01:59:55,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:59:55,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:59:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 01:59:55,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558695652173913 [2024-06-28 01:59:55,876 INFO L175 Difference]: Start difference. First operand has 159 places, 192 transitions, 2473 flow. Second operand 10 states and 257 transitions. [2024-06-28 01:59:55,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 297 transitions, 3749 flow [2024-06-28 01:59:57,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 297 transitions, 3537 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 01:59:57,348 INFO L231 Difference]: Finished difference. Result has 161 places, 196 transitions, 2540 flow [2024-06-28 01:59:57,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2540, PETRI_PLACES=161, PETRI_TRANSITIONS=196} [2024-06-28 01:59:57,352 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 111 predicate places. [2024-06-28 01:59:57,352 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 196 transitions, 2540 flow [2024-06-28 01:59:57,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:57,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:57,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:57,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:59:57,353 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:59:57,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:57,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1690590117, now seen corresponding path program 1 times [2024-06-28 01:59:57,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:57,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801355183] [2024-06-28 01:59:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:57,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat