./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/safe016_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/safe016_rmo.opt.i ./goblint.2024-05-07_14-17-48.files/protection/safe016_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-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:39:25,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:39:25,470 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:39:25,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:39:25,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:39:25,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:39:25,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:39:25,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:39:25,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:39:25,494 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:39:25,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:39:25,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:39:25,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:39:25,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:39:25,495 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:39:25,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:39:25,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:39:25,505 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:39:25,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:39:25,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:39:25,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:39:25,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:39:25,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:39:25,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:39:25,510 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:39:25,510 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:39:25,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:39:25,510 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:39:25,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:39:25,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:39:25,511 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:39:25,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:39:25,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:39:25,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:39:25,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:39:25,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:39:25,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:39:25,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:39:25,512 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:39:25,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:39:25,513 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:39:25,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:39:25,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:39:25,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:39:25,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:39:25,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:39:25,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:39:25,727 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:39:25,728 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:39:25,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i [2024-05-12 13:39:26,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:39:26,968 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:39:26,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i [2024-05-12 13:39:27,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f848b45ce/1ea640c4a6e9432cb293ebe8c4a6b952/FLAG0f746ff8f [2024-05-12 13:39:27,025 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f848b45ce/1ea640c4a6e9432cb293ebe8c4a6b952 [2024-05-12 13:39:27,028 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:39:27,028 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:39:27,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/safe016_rmo.opt.yml/witness.yml [2024-05-12 13:39:27,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:39:27,248 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:39:27,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:39:27,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:39:27,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:39:27,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:39:27" (1/2) ... [2024-05-12 13:39:27,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454e5698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:39:27, skipping insertion in model container [2024-05-12 13:39:27,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:39:27" (1/2) ... [2024-05-12 13:39:27,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58d74377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:39:27, skipping insertion in model container [2024-05-12 13:39:27,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:39:27" (2/2) ... [2024-05-12 13:39:27,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454e5698 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27, skipping insertion in model container [2024-05-12 13:39:27,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:39:27" (2/2) ... [2024-05-12 13:39:27,257 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:39:27,396 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:39:27,397 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || ((((0 <= *__unbuffered_p2_EAX$read_delayed_var && *__unbuffered_p2_EAX$read_delayed_var <= 2) && *__unbuffered_p2_EAX$read_delayed_var <= 127) && __unbuffered_p2_EAX$read_delayed_var == & x) && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-05-12 13:39:27,397 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || ((((0 <= *__unbuffered_p2_EAX$read_delayed_var && *__unbuffered_p2_EAX$read_delayed_var <= 2) && *__unbuffered_p2_EAX$read_delayed_var <= 127) && __unbuffered_p2_EAX$read_delayed_var == & x) && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-05-12 13:39:27,397 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || ((((0 <= *__unbuffered_p2_EAX$read_delayed_var && *__unbuffered_p2_EAX$read_delayed_var <= 2) && *__unbuffered_p2_EAX$read_delayed_var <= 127) && __unbuffered_p2_EAX$read_delayed_var == & x) && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-05-12 13:39:27,397 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || ((((0 <= *__unbuffered_p2_EAX$read_delayed_var && *__unbuffered_p2_EAX$read_delayed_var <= 2) && *__unbuffered_p2_EAX$read_delayed_var <= 127) && __unbuffered_p2_EAX$read_delayed_var == & x) && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-05-12 13:39:27,397 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:39:27,398 INFO L106 edCorrectnessWitness]: ghost_update [L861-L861] multithreaded = 1; [2024-05-12 13:39:27,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:39:27,586 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i[949,962] [2024-05-12 13:39:27,758 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:39:27,772 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:39:27,805 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:39:27,910 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:39:27,946 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:39:27,947 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27 WrapperNode [2024-05-12 13:39:27,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:39:27,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:39:27,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:39:27,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:39:27,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:27,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,017 INFO L138 Inliner]: procedures = 177, calls = 137, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 334 [2024-05-12 13:39:28,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:39:28,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:39:28,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:39:28,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:39:28,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,053 INFO L175 MemorySlicer]: Split 80 memory accesses to 6 slices as follows [2, 1, 1, 74, 1, 1]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 0, 1, 0, 0]. The 15 writes are split as follows [0, 1, 1, 11, 1, 1]. [2024-05-12 13:39:28,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:39:28,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:39:28,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:39:28,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:39:28,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (1/1) ... [2024-05-12 13:39:28,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:39:28,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:39:28,129 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) [2024-05-12 13:39:28,138 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 [2024-05-12 13:39:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 13:39:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 13:39:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 13:39:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 13:39:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 13:39:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-05-12 13:39:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:39:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:39:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:39:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:39:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:39:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-05-12 13:39:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:39:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:39:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:39:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:39:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:39:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:39:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:39:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:39:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:39:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:39:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:39:28,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:39:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:39:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:39:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:39:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:39:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:39:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-05-12 13:39:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:39:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:39:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:39:28,172 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:39:28,346 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:39:28,347 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:39:28,972 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:39:28,972 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:39:29,373 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:39:29,374 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:39:29,374 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:39:29 BoogieIcfgContainer [2024-05-12 13:39:29,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:39:29,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:39:29,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:39:29,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:39:29,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:39:27" (1/4) ... [2024-05-12 13:39:29,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70714bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:39:29, skipping insertion in model container [2024-05-12 13:39:29,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:39:27" (2/4) ... [2024-05-12 13:39:29,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70714bf4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:39:29, skipping insertion in model container [2024-05-12 13:39:29,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:39:27" (3/4) ... [2024-05-12 13:39:29,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70714bf4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:39:29, skipping insertion in model container [2024-05-12 13:39:29,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:39:29" (4/4) ... [2024-05-12 13:39:29,380 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.opt.i [2024-05-12 13:39:29,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:39:29,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:39:29,394 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:39:29,459 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:39:29,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 55 transitions, 126 flow [2024-05-12 13:39:29,507 INFO L124 PetriNetUnfolderBase]: 1/51 cut-off events. [2024-05-12 13:39:29,507 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:39:29,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-05-12 13:39:29,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 55 transitions, 126 flow [2024-05-12 13:39:29,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 48 transitions, 108 flow [2024-05-12 13:39:29,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:39:29,571 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;@7faa6c09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:39:29,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:39:29,575 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:39:29,575 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:39:29,575 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:39:29,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:29,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:39:29,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:29,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash 58546509, now seen corresponding path program 1 times [2024-05-12 13:39:29,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:29,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564348252] [2024-05-12 13:39:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:29,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:32,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564348252] [2024-05-12 13:39:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564348252] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:32,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:39:32,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755473308] [2024-05-12 13:39:32,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:32,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:39:32,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:32,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:39:32,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:39:32,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-05-12 13:39:32,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:32,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:32,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-05-12 13:39:32,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:35,893 INFO L124 PetriNetUnfolderBase]: 19883/27940 cut-off events. [2024-05-12 13:39:35,894 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-05-12 13:39:35,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54740 conditions, 27940 events. 19883/27940 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 170020 event pairs, 14027 based on Foata normal form. 0/27934 useless extension candidates. Maximal degree in co-relation 54724. Up to 26413 conditions per place. [2024-05-12 13:39:36,075 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 50 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2024-05-12 13:39:36,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 71 transitions, 285 flow [2024-05-12 13:39:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:39:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:39:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-05-12 13:39:36,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018181818181818 [2024-05-12 13:39:36,087 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 108 flow. Second operand 5 states and 138 transitions. [2024-05-12 13:39:36,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 71 transitions, 285 flow [2024-05-12 13:39:36,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:39:36,092 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 180 flow [2024-05-12 13:39:36,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-05-12 13:39:36,098 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-05-12 13:39:36,098 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 180 flow [2024-05-12 13:39:36,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:36,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:36,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:36,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:39:36,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:36,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash 436681208, now seen corresponding path program 1 times [2024-05-12 13:39:36,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:36,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332779521] [2024-05-12 13:39:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:36,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:38,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332779521] [2024-05-12 13:39:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332779521] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:38,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:39:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31724750] [2024-05-12 13:39:38,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:38,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:39:38,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:39:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:39:38,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-05-12 13:39:38,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:38,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:38,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-05-12 13:39:38,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:42,868 INFO L124 PetriNetUnfolderBase]: 24274/34022 cut-off events. [2024-05-12 13:39:42,869 INFO L125 PetriNetUnfolderBase]: For 6571/6579 co-relation queries the response was YES. [2024-05-12 13:39:42,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74653 conditions, 34022 events. 24274/34022 cut-off events. For 6571/6579 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 206760 event pairs, 10496 based on Foata normal form. 8/34018 useless extension candidates. Maximal degree in co-relation 74636. Up to 31722 conditions per place. [2024-05-12 13:39:43,054 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 72 selfloop transitions, 22 changer transitions 0/103 dead transitions. [2024-05-12 13:39:43,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 496 flow [2024-05-12 13:39:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:39:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:39:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-05-12 13:39:43,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5781818181818181 [2024-05-12 13:39:43,062 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 180 flow. Second operand 5 states and 159 transitions. [2024-05-12 13:39:43,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 496 flow [2024-05-12 13:39:43,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 103 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-05-12 13:39:43,069 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 328 flow [2024-05-12 13:39:43,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-05-12 13:39:43,070 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-05-12 13:39:43,070 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 328 flow [2024-05-12 13:39:43,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:43,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:43,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:43,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:39:43,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:43,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:43,071 INFO L85 PathProgramCache]: Analyzing trace with hash 403401578, now seen corresponding path program 1 times [2024-05-12 13:39:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:43,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246706568] [2024-05-12 13:39:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:43,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246706568] [2024-05-12 13:39:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246706568] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:44,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:39:44,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066078673] [2024-05-12 13:39:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:44,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:39:44,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:39:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:39:44,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-05-12 13:39:44,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:44,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:44,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-05-12 13:39:44,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:49,111 INFO L124 PetriNetUnfolderBase]: 20106/28247 cut-off events. [2024-05-12 13:39:49,112 INFO L125 PetriNetUnfolderBase]: For 17843/17845 co-relation queries the response was YES. [2024-05-12 13:39:49,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71321 conditions, 28247 events. 20106/28247 cut-off events. For 17843/17845 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 172099 event pairs, 11282 based on Foata normal form. 0/28218 useless extension candidates. Maximal degree in co-relation 71299. Up to 26706 conditions per place. [2024-05-12 13:39:49,238 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 69 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2024-05-12 13:39:49,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 96 transitions, 590 flow [2024-05-12 13:39:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:39:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:39:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-05-12 13:39:49,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-05-12 13:39:49,239 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 328 flow. Second operand 6 states and 158 transitions. [2024-05-12 13:39:49,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 96 transitions, 590 flow [2024-05-12 13:39:49,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 570 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-05-12 13:39:49,257 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 424 flow [2024-05-12 13:39:49,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=424, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-05-12 13:39:49,258 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 18 predicate places. [2024-05-12 13:39:49,258 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 424 flow [2024-05-12 13:39:49,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:49,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:49,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:49,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:39:49,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:49,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:49,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2012572463, now seen corresponding path program 1 times [2024-05-12 13:39:49,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:49,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775430635] [2024-05-12 13:39:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:49,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:52,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:52,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775430635] [2024-05-12 13:39:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775430635] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:52,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:52,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:39:52,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9407475] [2024-05-12 13:39:52,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:52,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:39:52,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:52,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:39:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:39:52,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-05-12 13:39:52,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:52,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:52,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-05-12 13:39:52,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:57,145 INFO L124 PetriNetUnfolderBase]: 24319/34072 cut-off events. [2024-05-12 13:39:57,146 INFO L125 PetriNetUnfolderBase]: For 20327/20348 co-relation queries the response was YES. [2024-05-12 13:39:57,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85088 conditions, 34072 events. 24319/34072 cut-off events. For 20327/20348 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 206453 event pairs, 12749 based on Foata normal form. 15/34077 useless extension candidates. Maximal degree in co-relation 85060. Up to 32196 conditions per place. [2024-05-12 13:39:57,392 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 74 selfloop transitions, 19 changer transitions 0/102 dead transitions. [2024-05-12 13:39:57,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 102 transitions, 684 flow [2024-05-12 13:39:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:39:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:39:57,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:39:57,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-05-12 13:39:57,394 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 424 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:39:57,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 102 transitions, 684 flow [2024-05-12 13:39:57,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 102 transitions, 680 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 13:39:57,408 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 510 flow [2024-05-12 13:39:57,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=510, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-05-12 13:39:57,410 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 26 predicate places. [2024-05-12 13:39:57,410 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 510 flow [2024-05-12 13:39:57,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:57,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:57,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:57,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:39:57,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:57,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:57,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1289154675, now seen corresponding path program 2 times [2024-05-12 13:39:57,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:57,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535670646] [2024-05-12 13:39:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:57,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:00,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:00,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535670646] [2024-05-12 13:40:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535670646] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:00,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:00,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:40:00,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991392558] [2024-05-12 13:40:00,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:00,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:40:00,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:00,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:40:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:40:00,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-05-12 13:40:00,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 510 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:00,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:00,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-05-12 13:40:00,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:40:04,996 INFO L124 PetriNetUnfolderBase]: 24320/34075 cut-off events. [2024-05-12 13:40:04,996 INFO L125 PetriNetUnfolderBase]: For 21943/21964 co-relation queries the response was YES. [2024-05-12 13:40:05,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86505 conditions, 34075 events. 24320/34075 cut-off events. For 21943/21964 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 206480 event pairs, 12749 based on Foata normal form. 15/34080 useless extension candidates. Maximal degree in co-relation 86474. Up to 32197 conditions per place. [2024-05-12 13:40:05,231 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 74 selfloop transitions, 19 changer transitions 0/102 dead transitions. [2024-05-12 13:40:05,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 102 transitions, 738 flow [2024-05-12 13:40:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:40:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:40:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-05-12 13:40:05,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575757575757576 [2024-05-12 13:40:05,232 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 510 flow. Second operand 6 states and 151 transitions. [2024-05-12 13:40:05,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 102 transitions, 738 flow [2024-05-12 13:40:05,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 102 transitions, 700 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:40:05,247 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 526 flow [2024-05-12 13:40:05,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=526, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2024-05-12 13:40:05,247 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 28 predicate places. [2024-05-12 13:40:05,248 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 526 flow [2024-05-12 13:40:05,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:05,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:40:05,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:40:05,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:40:05,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:40:05,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:40:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1256086665, now seen corresponding path program 3 times [2024-05-12 13:40:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:40:05,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515178734] [2024-05-12 13:40:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:40:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:40:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:09,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:09,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515178734] [2024-05-12 13:40:09,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515178734] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:09,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:09,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:40:09,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678164224] [2024-05-12 13:40:09,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:09,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:40:09,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:09,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:40:09,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:40:09,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-05-12 13:40:09,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 526 flow. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:09,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:09,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-05-12 13:40:09,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:40:13,560 INFO L124 PetriNetUnfolderBase]: 24321/34109 cut-off events. [2024-05-12 13:40:13,561 INFO L125 PetriNetUnfolderBase]: For 22346/22381 co-relation queries the response was YES. [2024-05-12 13:40:13,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86564 conditions, 34109 events. 24321/34109 cut-off events. For 22346/22381 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 207002 event pairs, 10492 based on Foata normal form. 29/34124 useless extension candidates. Maximal degree in co-relation 86532. Up to 31762 conditions per place. [2024-05-12 13:40:13,783 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 83 selfloop transitions, 30 changer transitions 0/122 dead transitions. [2024-05-12 13:40:13,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 851 flow [2024-05-12 13:40:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:40:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:40:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-05-12 13:40:13,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-05-12 13:40:13,785 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 526 flow. Second operand 6 states and 175 transitions. [2024-05-12 13:40:13,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 851 flow [2024-05-12 13:40:13,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 122 transitions, 807 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-05-12 13:40:13,800 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 558 flow [2024-05-12 13:40:13,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-05-12 13:40:13,801 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2024-05-12 13:40:13,801 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 558 flow [2024-05-12 13:40:13,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:13,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:40:13,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:40:13,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:40:13,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:40:13,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:40:13,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1254954855, now seen corresponding path program 4 times [2024-05-12 13:40:13,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:40:13,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863899176] [2024-05-12 13:40:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:40:13,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:40:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:40:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:40:17,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:40:17,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863899176] [2024-05-12 13:40:17,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863899176] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:40:17,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:40:17,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:40:17,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228372796] [2024-05-12 13:40:17,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:40:17,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:40:17,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:40:17,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:40:17,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:40:17,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-05-12 13:40:17,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 558 flow. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:17,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:40:17,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-05-12 13:40:17,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:40:21,997 INFO L124 PetriNetUnfolderBase]: 24692/34626 cut-off events. [2024-05-12 13:40:21,997 INFO L125 PetriNetUnfolderBase]: For 23949/23984 co-relation queries the response was YES. [2024-05-12 13:40:22,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88521 conditions, 34626 events. 24692/34626 cut-off events. For 23949/23984 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 210528 event pairs, 8606 based on Foata normal form. 29/34641 useless extension candidates. Maximal degree in co-relation 88488. Up to 31826 conditions per place. [2024-05-12 13:40:22,554 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 99 selfloop transitions, 33 changer transitions 0/141 dead transitions. [2024-05-12 13:40:22,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 969 flow [2024-05-12 13:40:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:40:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:40:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-05-12 13:40:22,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-05-12 13:40:22,556 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 558 flow. Second operand 6 states and 192 transitions. [2024-05-12 13:40:22,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 969 flow [2024-05-12 13:40:22,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 141 transitions, 896 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-05-12 13:40:22,832 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 586 flow [2024-05-12 13:40:22,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=586, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-05-12 13:40:22,832 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2024-05-12 13:40:22,833 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 586 flow [2024-05-12 13:40:22,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:40:22,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:40:22,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:40:22,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:40:22,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:40:22,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:40:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1122420779, now seen corresponding path program 1 times [2024-05-12 13:40:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:40:22,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206731389] [2024-05-12 13:40:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:40:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:40:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat