./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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe016_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/safe016_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:14:14,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:14:14,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:14:14,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:14:14,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:14:14,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:14:14,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:14:14,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:14:14,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:14:14,638 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:14:14,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:14:14,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:14:14,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:14:14,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:14:14,641 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:14:14,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:14:14,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:14:14,641 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:14:14,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:14:14,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:14:14,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:14:14,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:14:14,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:14:14,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:14:14,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:14:14,643 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:14:14,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:14:14,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:14:14,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:14:14,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:14:14,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:14:14,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:14:14,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:14:14,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:14:14,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:14:14,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:14:14,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:14:14,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:14:14,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:14:14,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:14:14,647 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:14:14,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:14:14,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:14:14,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:14:14,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:14:14,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:14:14,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:14:14,910 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:14:14,910 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:14:14,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i [2024-06-28 04:14:15,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:14:16,150 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:14:16,150 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.opt.i [2024-06-28 04:14:16,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde5645cd/f06af87eb042485e95a20ea470396d1b/FLAG6de85e307 [2024-06-28 04:14:16,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde5645cd/f06af87eb042485e95a20ea470396d1b [2024-06-28 04:14:16,176 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:14:16,176 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:14:16,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe016_rmo.opt.yml/witness.yml [2024-06-28 04:14:16,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:14:16,450 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:14:16,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:14:16,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:14:16,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:14:16,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:14:16" (1/2) ... [2024-06-28 04:14:16,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bc76ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:16, skipping insertion in model container [2024-06-28 04:14:16,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:14:16" (1/2) ... [2024-06-28 04:14:16,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@751b2001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:16, skipping insertion in model container [2024-06-28 04:14:16,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:14:16" (2/2) ... [2024-06-28 04:14:16,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bc76ed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:16, skipping insertion in model container [2024-06-28 04:14:16,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:14:16" (2/2) ... [2024-06-28 04:14:16,458 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:14:16,594 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:14:16,596 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$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_buff0_thd4 == (_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$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__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)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__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 || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0) [2024-06-28 04:14:16,596 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_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$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_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_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0) [2024-06-28 04:14:16,596 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$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_buff0_thd4 == (_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$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__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)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__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 || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0) [2024-06-28 04:14:16,596 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_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$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_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_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0) [2024-06-28 04:14:16,596 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:14:16,597 INFO L106 edCorrectnessWitness]: ghost_update [L861-L861] multithreaded = 1; [2024-06-28 04:14:16,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:14:16,971 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:14:16,981 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:14:17,118 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:14:17,162 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:14:17,162 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17 WrapperNode [2024-06-28 04:14:17,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:14:17,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:14:17,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:14:17,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:14:17,168 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 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,202 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 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,263 INFO L138 Inliner]: procedures = 176, calls = 122, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 327 [2024-06-28 04:14:17,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:14:17,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:14:17,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:14:17,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:14:17,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,280 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,310 INFO L175 MemorySlicer]: Split 76 memory accesses to 2 slices as follows [2, 74]. 97 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-06-28 04:14:17,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:14:17,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:14:17,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:14:17,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:14:17,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (1/1) ... [2024-06-28 04:14:17,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:14:17,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:14:17,381 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 04:14:17,393 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 04:14:17,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 04:14:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 04:14:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 04:14:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 04:14:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:14:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:14:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:14:17,415 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:14:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:14:17,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:14:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:14:17,416 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:14:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 04:14:17,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 04:14:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:14:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 04:14:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:14:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:14:17,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:14:17,418 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 04:14:17,579 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:14:17,580 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:14:18,153 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:14:18,153 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:14:18,618 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:14:18,619 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:14:18,619 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:14:18 BoogieIcfgContainer [2024-06-28 04:14:18,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:14:18,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:14:18,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:14:18,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:14:18,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:14:16" (1/4) ... [2024-06-28 04:14:18,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440fa00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:14:18, skipping insertion in model container [2024-06-28 04:14:18,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:14:16" (2/4) ... [2024-06-28 04:14:18,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440fa00e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:14:18, skipping insertion in model container [2024-06-28 04:14:18,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:17" (3/4) ... [2024-06-28 04:14:18,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440fa00e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:14:18, skipping insertion in model container [2024-06-28 04:14:18,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:14:18" (4/4) ... [2024-06-28 04:14:18,625 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.opt.i [2024-06-28 04:14:18,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:14:18,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 04:14:18,639 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:14:18,692 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:14:18,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 04:14:18,781 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-28 04:14:18,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:14:18,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:14:18,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 04:14:18,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-28 04:14:18,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:14:18,851 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;@5bc0e024, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:14:18,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 04:14:18,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:14:18,855 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:14:18,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:14:18,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:18,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:14:18,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:18,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash 995299129, now seen corresponding path program 1 times [2024-06-28 04:14:18,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:18,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51554185] [2024-06-28 04:14:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:21,046 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 04:14:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:21,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51554185] [2024-06-28 04:14:21,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51554185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:21,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:21,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:14:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204681194] [2024-06-28 04:14:21,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:21,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:14:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:21,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:14:21,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:14:21,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:21,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 04:14:21,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:21,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:21,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:23,020 INFO L124 PetriNetUnfolderBase]: 8561/11714 cut-off events. [2024-06-28 04:14:23,021 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-28 04:14:23,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23790 conditions, 11714 events. 8561/11714 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 60016 event pairs, 6368 based on Foata normal form. 1/11534 useless extension candidates. Maximal degree in co-relation 23777. Up to 11694 conditions per place. [2024-06-28 04:14:23,083 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 48 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 04:14:23,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 245 flow [2024-06-28 04:14:23,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:14:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:14:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-06-28 04:14:23,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-06-28 04:14:23,096 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 87 transitions. [2024-06-28 04:14:23,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 245 flow [2024-06-28 04:14:23,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 238 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:14:23,103 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-28 04:14:23,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 04:14:23,109 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-28 04:14:23,109 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-28 04:14:23,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 04:14:23,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:23,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:23,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:14:23,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:23,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:23,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1481082732, now seen corresponding path program 1 times [2024-06-28 04:14:23,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676051890] [2024-06-28 04:14:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:25,309 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 04:14:25,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676051890] [2024-06-28 04:14:25,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676051890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:25,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:25,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:14:25,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502401372] [2024-06-28 04:14:25,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:25,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:14:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:14:25,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:14:25,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:14:25,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 04:14:25,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:25,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:14:25,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:27,432 INFO L124 PetriNetUnfolderBase]: 10503/14344 cut-off events. [2024-06-28 04:14:27,432 INFO L125 PetriNetUnfolderBase]: For 2656/2676 co-relation queries the response was YES. [2024-06-28 04:14:27,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32805 conditions, 14344 events. 10503/14344 cut-off events. For 2656/2676 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 72816 event pairs, 4227 based on Foata normal form. 26/14357 useless extension candidates. Maximal degree in co-relation 32793. Up to 13871 conditions per place. [2024-06-28 04:14:27,524 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 71 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-28 04:14:27,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 419 flow [2024-06-28 04:14:27,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:14:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:14:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 04:14:27,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2024-06-28 04:14:27,528 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 122 transitions. [2024-06-28 04:14:27,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 419 flow [2024-06-28 04:14:27,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:14:27,534 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 223 flow [2024-06-28 04:14:27,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-06-28 04:14:27,535 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-28 04:14:27,536 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 223 flow [2024-06-28 04:14:27,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 04:14:27,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:27,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:27,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:14:27,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:27,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1686263469, now seen corresponding path program 1 times [2024-06-28 04:14:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:27,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594661210] [2024-06-28 04:14:27,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:27,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:30,932 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 04:14:30,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:30,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594661210] [2024-06-28 04:14:30,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594661210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:30,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:30,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:14:30,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730107898] [2024-06-28 04:14:30,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:30,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:14:30,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:30,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:14:30,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:14:30,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:14:30,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:30,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:30,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:14:30,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:33,109 INFO L124 PetriNetUnfolderBase]: 10779/14768 cut-off events. [2024-06-28 04:14:33,109 INFO L125 PetriNetUnfolderBase]: For 9981/10054 co-relation queries the response was YES. [2024-06-28 04:14:33,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39342 conditions, 14768 events. 10779/14768 cut-off events. For 9981/10054 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 75736 event pairs, 3371 based on Foata normal form. 84/14839 useless extension candidates. Maximal degree in co-relation 39327. Up to 13873 conditions per place. [2024-06-28 04:14:33,169 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 85 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-28 04:14:33,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 569 flow [2024-06-28 04:14:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:14:33,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:14:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-28 04:14:33,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5692307692307692 [2024-06-28 04:14:33,172 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 223 flow. Second operand 5 states and 148 transitions. [2024-06-28 04:14:33,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 569 flow [2024-06-28 04:14:33,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 107 transitions, 563 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 04:14:33,176 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 280 flow [2024-06-28 04:14:33,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-28 04:14:33,177 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-28 04:14:33,177 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 280 flow [2024-06-28 04:14:33,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:33,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:33,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:33,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:14:33,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:33,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:33,178 INFO L85 PathProgramCache]: Analyzing trace with hash -961483057, now seen corresponding path program 1 times [2024-06-28 04:14:33,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:33,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083601660] [2024-06-28 04:14:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:33,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:34,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:34,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083601660] [2024-06-28 04:14:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083601660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:34,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:34,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:14:34,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652351955] [2024-06-28 04:14:34,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:34,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:14:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:34,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:14:34,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:14:34,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:14:34,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 04:14:34,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:34,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:14:34,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:37,121 INFO L124 PetriNetUnfolderBase]: 8823/12115 cut-off events. [2024-06-28 04:14:37,121 INFO L125 PetriNetUnfolderBase]: For 14172/14214 co-relation queries the response was YES. [2024-06-28 04:14:37,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35290 conditions, 12115 events. 8823/12115 cut-off events. For 14172/14214 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 62438 event pairs, 3908 based on Foata normal form. 46/12148 useless extension candidates. Maximal degree in co-relation 35271. Up to 11798 conditions per place. [2024-06-28 04:14:37,290 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 64 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-06-28 04:14:37,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 500 flow [2024-06-28 04:14:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:14:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:14:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 04:14:37,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653846153846154 [2024-06-28 04:14:37,294 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 280 flow. Second operand 5 states and 121 transitions. [2024-06-28 04:14:37,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 500 flow [2024-06-28 04:14:37,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 463 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 04:14:37,302 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 286 flow [2024-06-28 04:14:37,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-28 04:14:37,303 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-28 04:14:37,304 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 286 flow [2024-06-28 04:14:37,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 04:14:37,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:37,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:37,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:14:37,305 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:37,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1769255540, now seen corresponding path program 1 times [2024-06-28 04:14:37,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819724095] [2024-06-28 04:14:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:37,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:40,075 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 04:14:40,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:40,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819724095] [2024-06-28 04:14:40,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819724095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:40,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:40,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:14:40,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223099962] [2024-06-28 04:14:40,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:40,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:14:40,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:40,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:14:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:14:40,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:14:40,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 286 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 04:14:40,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:40,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:14:40,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:42,592 INFO L124 PetriNetUnfolderBase]: 9052/12458 cut-off events. [2024-06-28 04:14:42,593 INFO L125 PetriNetUnfolderBase]: For 17862/17904 co-relation queries the response was YES. [2024-06-28 04:14:42,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37076 conditions, 12458 events. 9052/12458 cut-off events. For 17862/17904 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 64513 event pairs, 3505 based on Foata normal form. 70/12515 useless extension candidates. Maximal degree in co-relation 37055. Up to 11795 conditions per place. [2024-06-28 04:14:42,655 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 79 selfloop transitions, 18 changer transitions 0/102 dead transitions. [2024-06-28 04:14:42,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 102 transitions, 602 flow [2024-06-28 04:14:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:14:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:14:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 04:14:42,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 04:14:42,657 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 286 flow. Second operand 6 states and 148 transitions. [2024-06-28 04:14:42,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 102 transitions, 602 flow [2024-06-28 04:14:42,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 573 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 04:14:42,666 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 332 flow [2024-06-28 04:14:42,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-06-28 04:14:42,667 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-28 04:14:42,667 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 332 flow [2024-06-28 04:14:42,667 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 04:14:42,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:42,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:42,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:14:42,668 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:42,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:42,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1032467526, now seen corresponding path program 1 times [2024-06-28 04:14:42,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:42,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311992691] [2024-06-28 04:14:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:44,876 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 04:14:44,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:44,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311992691] [2024-06-28 04:14:44,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311992691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:44,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:44,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:14:44,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071769370] [2024-06-28 04:14:44,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:44,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:14:44,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:14:44,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:14:44,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:14:44,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 332 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 04:14:44,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:44,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:14:44,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:46,881 INFO L124 PetriNetUnfolderBase]: 9045/12436 cut-off events. [2024-06-28 04:14:46,881 INFO L125 PetriNetUnfolderBase]: For 24239/24239 co-relation queries the response was YES. [2024-06-28 04:14:46,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39499 conditions, 12436 events. 9045/12436 cut-off events. For 24239/24239 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 64110 event pairs, 4806 based on Foata normal form. 2/12434 useless extension candidates. Maximal degree in co-relation 39477. Up to 12405 conditions per place. [2024-06-28 04:14:46,938 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 68 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-28 04:14:46,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 560 flow [2024-06-28 04:14:46,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:14:46,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:14:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-06-28 04:14:46,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41923076923076924 [2024-06-28 04:14:46,940 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 332 flow. Second operand 5 states and 109 transitions. [2024-06-28 04:14:46,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 560 flow [2024-06-28 04:14:46,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 517 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:14:46,953 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 354 flow [2024-06-28 04:14:46,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-06-28 04:14:46,956 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-28 04:14:46,956 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 354 flow [2024-06-28 04:14:46,956 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 04:14:46,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:46,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:46,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:14:46,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:46,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash -963107005, now seen corresponding path program 1 times [2024-06-28 04:14:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932671026] [2024-06-28 04:14:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:49,987 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 04:14:49,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932671026] [2024-06-28 04:14:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932671026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:49,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:49,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:14:49,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073815342] [2024-06-28 04:14:49,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:49,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:14:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:49,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:14:49,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:14:50,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:14:50,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 354 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:50,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:50,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:14:50,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:52,403 INFO L124 PetriNetUnfolderBase]: 10873/14931 cut-off events. [2024-06-28 04:14:52,403 INFO L125 PetriNetUnfolderBase]: For 38372/38463 co-relation queries the response was YES. [2024-06-28 04:14:52,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49369 conditions, 14931 events. 10873/14931 cut-off events. For 38372/38463 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 76792 event pairs, 2633 based on Foata normal form. 81/14993 useless extension candidates. Maximal degree in co-relation 49346. Up to 13311 conditions per place. [2024-06-28 04:14:52,463 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 87 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2024-06-28 04:14:52,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 742 flow [2024-06-28 04:14:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:14:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:14:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 04:14:52,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 04:14:52,465 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 354 flow. Second operand 6 states and 143 transitions. [2024-06-28 04:14:52,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 742 flow [2024-06-28 04:14:52,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 112 transitions, 697 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 04:14:52,477 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 408 flow [2024-06-28 04:14:52,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-28 04:14:52,478 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-28 04:14:52,478 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 408 flow [2024-06-28 04:14:52,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:52,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:52,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:52,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:14:52,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:52,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:52,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1611502295, now seen corresponding path program 1 times [2024-06-28 04:14:52,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:52,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57033738] [2024-06-28 04:14:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:55,183 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 04:14:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57033738] [2024-06-28 04:14:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57033738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:55,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:14:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384394328] [2024-06-28 04:14:55,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:14:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:14:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:14:55,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:14:55,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 408 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:55,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:55,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:14:55,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:57,526 INFO L124 PetriNetUnfolderBase]: 10819/14853 cut-off events. [2024-06-28 04:14:57,527 INFO L125 PetriNetUnfolderBase]: For 48145/48242 co-relation queries the response was YES. [2024-06-28 04:14:57,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51319 conditions, 14853 events. 10819/14853 cut-off events. For 48145/48242 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76278 event pairs, 2603 based on Foata normal form. 81/14915 useless extension candidates. Maximal degree in co-relation 51296. Up to 13287 conditions per place. [2024-06-28 04:14:57,604 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 84 selfloop transitions, 21 changer transitions 0/109 dead transitions. [2024-06-28 04:14:57,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 109 transitions, 704 flow [2024-06-28 04:14:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:14:57,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:14:57,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 04:14:57,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-28 04:14:57,606 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 408 flow. Second operand 6 states and 140 transitions. [2024-06-28 04:14:57,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 109 transitions, 704 flow [2024-06-28 04:14:57,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 109 transitions, 671 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 04:14:57,656 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 410 flow [2024-06-28 04:14:57,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-06-28 04:14:57,658 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-28 04:14:57,658 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 410 flow [2024-06-28 04:14:57,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:57,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:57,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:57,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:14:57,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:57,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1941720461, now seen corresponding path program 1 times [2024-06-28 04:14:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:57,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580363283] [2024-06-28 04:14:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:57,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:00,220 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 04:15:00,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580363283] [2024-06-28 04:15:00,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580363283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:00,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:00,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:00,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587456860] [2024-06-28 04:15:00,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:00,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:00,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:00,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:00,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:00,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:15:00,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 410 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:00,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:00,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:15:00,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:02,810 INFO L124 PetriNetUnfolderBase]: 10845/14859 cut-off events. [2024-06-28 04:15:02,810 INFO L125 PetriNetUnfolderBase]: For 54762/54762 co-relation queries the response was YES. [2024-06-28 04:15:02,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52771 conditions, 14859 events. 10845/14859 cut-off events. For 54762/54762 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76135 event pairs, 5232 based on Foata normal form. 8/14864 useless extension candidates. Maximal degree in co-relation 52746. Up to 14737 conditions per place. [2024-06-28 04:15:02,893 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 94 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2024-06-28 04:15:02,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 854 flow [2024-06-28 04:15:02,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:02,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 04:15:02,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-28 04:15:02,895 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 410 flow. Second operand 6 states and 132 transitions. [2024-06-28 04:15:02,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 854 flow [2024-06-28 04:15:02,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 792 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:02,970 INFO L231 Difference]: Finished difference. Result has 76 places, 86 transitions, 541 flow [2024-06-28 04:15:02,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=541, PETRI_PLACES=76, PETRI_TRANSITIONS=86} [2024-06-28 04:15:02,970 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-06-28 04:15:02,970 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 86 transitions, 541 flow [2024-06-28 04:15:02,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:02,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:02,971 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 04:15:02,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:15:02,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:02,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash 407020793, now seen corresponding path program 1 times [2024-06-28 04:15:02,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:02,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626811799] [2024-06-28 04:15:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:05,327 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 04:15:05,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626811799] [2024-06-28 04:15:05,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626811799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:05,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:05,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:05,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553608136] [2024-06-28 04:15:05,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:05,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:05,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:05,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:05,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:05,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:15:05,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 86 transitions, 541 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 04:15:05,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:05,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:15:05,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:08,056 INFO L124 PetriNetUnfolderBase]: 10624/14720 cut-off events. [2024-06-28 04:15:08,056 INFO L125 PetriNetUnfolderBase]: For 70314/70343 co-relation queries the response was YES. [2024-06-28 04:15:08,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56573 conditions, 14720 events. 10624/14720 cut-off events. For 70314/70343 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 76780 event pairs, 4081 based on Foata normal form. 36/14741 useless extension candidates. Maximal degree in co-relation 56545. Up to 13770 conditions per place. [2024-06-28 04:15:08,149 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 96 selfloop transitions, 34 changer transitions 0/138 dead transitions. [2024-06-28 04:15:08,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 138 transitions, 1081 flow [2024-06-28 04:15:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:08,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 04:15:08,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-28 04:15:08,151 INFO L175 Difference]: Start difference. First operand has 76 places, 86 transitions, 541 flow. Second operand 6 states and 146 transitions. [2024-06-28 04:15:08,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 138 transitions, 1081 flow [2024-06-28 04:15:08,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 138 transitions, 1059 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-28 04:15:08,254 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 752 flow [2024-06-28 04:15:08,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2024-06-28 04:15:08,255 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-28 04:15:08,255 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 752 flow [2024-06-28 04:15:08,256 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 04:15:08,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:08,256 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 04:15:08,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:15:08,256 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:08,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash 423285563, now seen corresponding path program 2 times [2024-06-28 04:15:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387160590] [2024-06-28 04:15:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:10,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387160590] [2024-06-28 04:15:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387160590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:10,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:10,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:10,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720903293] [2024-06-28 04:15:10,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:10,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:10,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:10,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:10,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:15:10,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 752 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 04:15:10,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:10,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:15:10,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:13,229 INFO L124 PetriNetUnfolderBase]: 10857/15004 cut-off events. [2024-06-28 04:15:13,230 INFO L125 PetriNetUnfolderBase]: For 91406/91406 co-relation queries the response was YES. [2024-06-28 04:15:13,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63261 conditions, 15004 events. 10857/15004 cut-off events. For 91406/91406 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 78084 event pairs, 5137 based on Foata normal form. 16/15014 useless extension candidates. Maximal degree in co-relation 63229. Up to 14588 conditions per place. [2024-06-28 04:15:13,329 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 112 selfloop transitions, 24 changer transitions 0/144 dead transitions. [2024-06-28 04:15:13,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 1239 flow [2024-06-28 04:15:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 04:15:13,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-06-28 04:15:13,331 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 752 flow. Second operand 7 states and 152 transitions. [2024-06-28 04:15:13,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 1239 flow [2024-06-28 04:15:13,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 144 transitions, 1201 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-28 04:15:13,507 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 894 flow [2024-06-28 04:15:13,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=894, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2024-06-28 04:15:13,508 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-06-28 04:15:13,508 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 894 flow [2024-06-28 04:15:13,508 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 04:15:13,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:13,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:13,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:15:13,509 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:13,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:13,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1992058429, now seen corresponding path program 1 times [2024-06-28 04:15:13,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:13,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116672926] [2024-06-28 04:15:13,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:13,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:16,213 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 04:15:16,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:16,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116672926] [2024-06-28 04:15:16,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116672926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:16,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:16,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:16,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302243592] [2024-06-28 04:15:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:16,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:16,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:16,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:15:16,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 894 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:16,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:16,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:15:16,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:19,091 INFO L124 PetriNetUnfolderBase]: 11387/15608 cut-off events. [2024-06-28 04:15:19,091 INFO L125 PetriNetUnfolderBase]: For 102642/102734 co-relation queries the response was YES. [2024-06-28 04:15:19,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66227 conditions, 15608 events. 11387/15608 cut-off events. For 102642/102734 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 80480 event pairs, 4211 based on Foata normal form. 81/15675 useless extension candidates. Maximal degree in co-relation 66191. Up to 14557 conditions per place. [2024-06-28 04:15:19,191 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 109 selfloop transitions, 45 changer transitions 0/158 dead transitions. [2024-06-28 04:15:19,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 158 transitions, 1450 flow [2024-06-28 04:15:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 04:15:19,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-28 04:15:19,193 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 894 flow. Second operand 6 states and 146 transitions. [2024-06-28 04:15:19,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 158 transitions, 1450 flow [2024-06-28 04:15:19,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 158 transitions, 1366 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:19,365 INFO L231 Difference]: Finished difference. Result has 90 places, 114 transitions, 960 flow [2024-06-28 04:15:19,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=960, PETRI_PLACES=90, PETRI_TRANSITIONS=114} [2024-06-28 04:15:19,366 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 35 predicate places. [2024-06-28 04:15:19,366 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 114 transitions, 960 flow [2024-06-28 04:15:19,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:19,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:19,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:19,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:15:19,366 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:19,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1254756528, now seen corresponding path program 1 times [2024-06-28 04:15:19,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:19,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750286297] [2024-06-28 04:15:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:21,849 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 04:15:21,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:21,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750286297] [2024-06-28 04:15:21,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750286297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:21,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:21,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839493703] [2024-06-28 04:15:21,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:21,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:21,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:21,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:21,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:21,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:15:21,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 114 transitions, 960 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:21,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:21,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:15:21,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:25,300 INFO L124 PetriNetUnfolderBase]: 11553/15790 cut-off events. [2024-06-28 04:15:25,301 INFO L125 PetriNetUnfolderBase]: For 113466/113474 co-relation queries the response was YES. [2024-06-28 04:15:25,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68407 conditions, 15790 events. 11553/15790 cut-off events. For 113466/113474 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 81198 event pairs, 5154 based on Foata normal form. 14/15799 useless extension candidates. Maximal degree in co-relation 68371. Up to 15529 conditions per place. [2024-06-28 04:15:25,395 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 116 selfloop transitions, 42 changer transitions 0/162 dead transitions. [2024-06-28 04:15:25,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 162 transitions, 1540 flow [2024-06-28 04:15:25,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 04:15:25,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-06-28 04:15:25,397 INFO L175 Difference]: Start difference. First operand has 90 places, 114 transitions, 960 flow. Second operand 8 states and 161 transitions. [2024-06-28 04:15:25,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 162 transitions, 1540 flow [2024-06-28 04:15:25,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 162 transitions, 1401 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:25,593 INFO L231 Difference]: Finished difference. Result has 96 places, 130 transitions, 1107 flow [2024-06-28 04:15:25,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1107, PETRI_PLACES=96, PETRI_TRANSITIONS=130} [2024-06-28 04:15:25,593 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-28 04:15:25,594 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 130 transitions, 1107 flow [2024-06-28 04:15:25,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:25,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:25,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:25,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:15:25,594 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:25,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:25,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1239043837, now seen corresponding path program 2 times [2024-06-28 04:15:25,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:25,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791639166] [2024-06-28 04:15:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:25,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:28,014 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 04:15:28,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:28,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791639166] [2024-06-28 04:15:28,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791639166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:28,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:28,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:28,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052564169] [2024-06-28 04:15:28,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:28,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:28,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:28,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:28,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:28,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:15:28,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 130 transitions, 1107 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:28,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:28,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:15:28,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:30,859 INFO L124 PetriNetUnfolderBase]: 11491/15708 cut-off events. [2024-06-28 04:15:30,860 INFO L125 PetriNetUnfolderBase]: For 134750/134758 co-relation queries the response was YES. [2024-06-28 04:15:30,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71947 conditions, 15708 events. 11491/15708 cut-off events. For 134750/134758 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 80324 event pairs, 5185 based on Foata normal form. 18/15721 useless extension candidates. Maximal degree in co-relation 71909. Up to 15441 conditions per place. [2024-06-28 04:15:30,957 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 135 selfloop transitions, 24 changer transitions 0/163 dead transitions. [2024-06-28 04:15:30,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 163 transitions, 1505 flow [2024-06-28 04:15:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-28 04:15:30,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-28 04:15:30,959 INFO L175 Difference]: Start difference. First operand has 96 places, 130 transitions, 1107 flow. Second operand 7 states and 147 transitions. [2024-06-28 04:15:30,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 163 transitions, 1505 flow [2024-06-28 04:15:31,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 163 transitions, 1418 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:31,158 INFO L231 Difference]: Finished difference. Result has 100 places, 130 transitions, 1079 flow [2024-06-28 04:15:31,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1079, PETRI_PLACES=100, PETRI_TRANSITIONS=130} [2024-06-28 04:15:31,159 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-28 04:15:31,159 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 130 transitions, 1079 flow [2024-06-28 04:15:31,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:31,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:31,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:31,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:15:31,160 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash -261547564, now seen corresponding path program 2 times [2024-06-28 04:15:31,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:31,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732722167] [2024-06-28 04:15:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:31,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:34,071 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 04:15:34,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:34,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732722167] [2024-06-28 04:15:34,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732722167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:34,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:34,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:34,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250294185] [2024-06-28 04:15:34,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:34,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:34,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:34,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:34,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:34,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:15:34,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 130 transitions, 1079 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:34,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:34,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:15:34,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:37,266 INFO L124 PetriNetUnfolderBase]: 11561/15798 cut-off events. [2024-06-28 04:15:37,266 INFO L125 PetriNetUnfolderBase]: For 146631/146639 co-relation queries the response was YES. [2024-06-28 04:15:37,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73309 conditions, 15798 events. 11561/15798 cut-off events. For 146631/146639 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 81179 event pairs, 5153 based on Foata normal form. 14/15807 useless extension candidates. Maximal degree in co-relation 73269. Up to 15387 conditions per place. [2024-06-28 04:15:37,377 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 126 selfloop transitions, 56 changer transitions 0/186 dead transitions. [2024-06-28 04:15:37,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 186 transitions, 1815 flow [2024-06-28 04:15:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:37,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 04:15:37,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:15:37,379 INFO L175 Difference]: Start difference. First operand has 100 places, 130 transitions, 1079 flow. Second operand 7 states and 156 transitions. [2024-06-28 04:15:37,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 186 transitions, 1815 flow [2024-06-28 04:15:37,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 1767 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:37,599 INFO L231 Difference]: Finished difference. Result has 103 places, 148 transitions, 1411 flow [2024-06-28 04:15:37,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1411, PETRI_PLACES=103, PETRI_TRANSITIONS=148} [2024-06-28 04:15:37,601 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-06-28 04:15:37,601 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 148 transitions, 1411 flow [2024-06-28 04:15:37,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:37,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:37,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:37,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:15:37,602 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:37,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash 211455120, now seen corresponding path program 1 times [2024-06-28 04:15:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:37,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418924996] [2024-06-28 04:15:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:40,255 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 04:15:40,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418924996] [2024-06-28 04:15:40,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418924996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:40,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:40,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:40,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937041514] [2024-06-28 04:15:40,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:40,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:40,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:40,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:40,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:40,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:15:40,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 148 transitions, 1411 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:40,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:40,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:15:40,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:43,515 INFO L124 PetriNetUnfolderBase]: 11849/16169 cut-off events. [2024-06-28 04:15:43,515 INFO L125 PetriNetUnfolderBase]: For 178602/178602 co-relation queries the response was YES. [2024-06-28 04:15:43,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79753 conditions, 16169 events. 11849/16169 cut-off events. For 178602/178602 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 82666 event pairs, 5051 based on Foata normal form. 16/16181 useless extension candidates. Maximal degree in co-relation 79710. Up to 15505 conditions per place. [2024-06-28 04:15:43,646 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 182 selfloop transitions, 37 changer transitions 0/223 dead transitions. [2024-06-28 04:15:43,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 223 transitions, 2318 flow [2024-06-28 04:15:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 04:15:43,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45604395604395603 [2024-06-28 04:15:43,649 INFO L175 Difference]: Start difference. First operand has 103 places, 148 transitions, 1411 flow. Second operand 7 states and 166 transitions. [2024-06-28 04:15:43,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 223 transitions, 2318 flow [2024-06-28 04:15:43,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 223 transitions, 2222 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-06-28 04:15:43,872 INFO L231 Difference]: Finished difference. Result has 111 places, 168 transitions, 1615 flow [2024-06-28 04:15:43,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1615, PETRI_PLACES=111, PETRI_TRANSITIONS=168} [2024-06-28 04:15:43,873 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-28 04:15:43,873 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 168 transitions, 1615 flow [2024-06-28 04:15:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:43,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:43,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:43,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:15:43,873 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:43,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash 237159728, now seen corresponding path program 2 times [2024-06-28 04:15:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:43,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086238507] [2024-06-28 04:15:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:43,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:46,598 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 04:15:46,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:46,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086238507] [2024-06-28 04:15:46,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086238507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:46,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:46,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:46,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228030013] [2024-06-28 04:15:46,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:46,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:46,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:46,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:46,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:15:46,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 168 transitions, 1615 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:46,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:46,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:15:46,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:49,796 INFO L124 PetriNetUnfolderBase]: 12093/16483 cut-off events. [2024-06-28 04:15:49,796 INFO L125 PetriNetUnfolderBase]: For 191229/191229 co-relation queries the response was YES. [2024-06-28 04:15:49,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82582 conditions, 16483 events. 12093/16483 cut-off events. For 191229/191229 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 84414 event pairs, 5172 based on Foata normal form. 16/16496 useless extension candidates. Maximal degree in co-relation 82534. Up to 15977 conditions per place. [2024-06-28 04:15:49,913 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 200 selfloop transitions, 39 changer transitions 0/243 dead transitions. [2024-06-28 04:15:49,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 243 transitions, 2564 flow [2024-06-28 04:15:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:15:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:15:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-28 04:15:49,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252136752136752 [2024-06-28 04:15:49,915 INFO L175 Difference]: Start difference. First operand has 111 places, 168 transitions, 1615 flow. Second operand 9 states and 199 transitions. [2024-06-28 04:15:49,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 243 transitions, 2564 flow [2024-06-28 04:15:50,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 243 transitions, 2460 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-06-28 04:15:50,247 INFO L231 Difference]: Finished difference. Result has 119 places, 183 transitions, 1779 flow [2024-06-28 04:15:50,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1779, PETRI_PLACES=119, PETRI_TRANSITIONS=183} [2024-06-28 04:15:50,247 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-28 04:15:50,247 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 183 transitions, 1779 flow [2024-06-28 04:15:50,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:50,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:50,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:50,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:15:50,248 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:50,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:50,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1977714124, now seen corresponding path program 3 times [2024-06-28 04:15:50,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:50,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181340929] [2024-06-28 04:15:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:53,394 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 04:15:53,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:53,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181340929] [2024-06-28 04:15:53,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181340929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:53,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:53,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:53,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180518954] [2024-06-28 04:15:53,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:53,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:53,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:53,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:53,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:15:53,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 183 transitions, 1779 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:53,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:53,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:15:53,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:56,559 INFO L124 PetriNetUnfolderBase]: 12057/16439 cut-off events. [2024-06-28 04:15:56,559 INFO L125 PetriNetUnfolderBase]: For 211283/211283 co-relation queries the response was YES. [2024-06-28 04:15:56,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84117 conditions, 16439 events. 12057/16439 cut-off events. For 211283/211283 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 84110 event pairs, 5180 based on Foata normal form. 16/16452 useless extension candidates. Maximal degree in co-relation 84066. Up to 15961 conditions per place. [2024-06-28 04:15:56,671 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 187 selfloop transitions, 35 changer transitions 0/226 dead transitions. [2024-06-28 04:15:56,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 226 transitions, 2441 flow [2024-06-28 04:15:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:56,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 04:15:56,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:15:56,673 INFO L175 Difference]: Start difference. First operand has 119 places, 183 transitions, 1779 flow. Second operand 7 states and 156 transitions. [2024-06-28 04:15:56,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 226 transitions, 2441 flow [2024-06-28 04:15:57,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 226 transitions, 2355 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:57,016 INFO L231 Difference]: Finished difference. Result has 122 places, 183 transitions, 1774 flow [2024-06-28 04:15:57,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1774, PETRI_PLACES=122, PETRI_TRANSITIONS=183} [2024-06-28 04:15:57,016 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 67 predicate places. [2024-06-28 04:15:57,016 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 183 transitions, 1774 flow [2024-06-28 04:15:57,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 04:15:57,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:57,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:57,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:15:57,017 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:57,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1977498798, now seen corresponding path program 1 times [2024-06-28 04:15:57,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:57,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744237169] [2024-06-28 04:15:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:57,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:00,731 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 04:16:00,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:00,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744237169] [2024-06-28 04:16:00,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744237169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:00,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:00,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:00,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277132122] [2024-06-28 04:16:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:00,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:00,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:00,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:00,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:00,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:16:00,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 183 transitions, 1774 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:00,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:00,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:16:00,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:04,037 INFO L124 PetriNetUnfolderBase]: 12141/16555 cut-off events. [2024-06-28 04:16:04,037 INFO L125 PetriNetUnfolderBase]: For 228264/228264 co-relation queries the response was YES. [2024-06-28 04:16:04,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85903 conditions, 16555 events. 12141/16555 cut-off events. For 228264/228264 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 84709 event pairs, 5200 based on Foata normal form. 16/16568 useless extension candidates. Maximal degree in co-relation 85850. Up to 16339 conditions per place. [2024-06-28 04:16:04,164 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 200 selfloop transitions, 25 changer transitions 0/229 dead transitions. [2024-06-28 04:16:04,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 229 transitions, 2468 flow [2024-06-28 04:16:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:16:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:16:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 04:16:04,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-28 04:16:04,165 INFO L175 Difference]: Start difference. First operand has 122 places, 183 transitions, 1774 flow. Second operand 7 states and 154 transitions. [2024-06-28 04:16:04,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 229 transitions, 2468 flow [2024-06-28 04:16:04,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 229 transitions, 2398 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:16:04,605 INFO L231 Difference]: Finished difference. Result has 123 places, 186 transitions, 1817 flow [2024-06-28 04:16:04,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1817, PETRI_PLACES=123, PETRI_TRANSITIONS=186} [2024-06-28 04:16:04,605 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-28 04:16:04,606 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 186 transitions, 1817 flow [2024-06-28 04:16:04,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:04,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:04,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:04,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:16:04,606 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:04,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:04,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1624270928, now seen corresponding path program 1 times [2024-06-28 04:16:04,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:04,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297560745] [2024-06-28 04:16:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:04,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:07,599 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 04:16:07,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:07,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297560745] [2024-06-28 04:16:07,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297560745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:07,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:07,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632386658] [2024-06-28 04:16:07,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:07,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:07,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:07,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:16:07,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 186 transitions, 1817 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:07,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:07,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:16:07,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:12,216 INFO L124 PetriNetUnfolderBase]: 14685/19866 cut-off events. [2024-06-28 04:16:12,216 INFO L125 PetriNetUnfolderBase]: For 303853/303933 co-relation queries the response was YES. [2024-06-28 04:16:12,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105251 conditions, 19866 events. 14685/19866 cut-off events. For 303853/303933 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 102870 event pairs, 4061 based on Foata normal form. 110/19962 useless extension candidates. Maximal degree in co-relation 105197. Up to 15537 conditions per place. [2024-06-28 04:16:12,346 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 179 selfloop transitions, 112 changer transitions 0/295 dead transitions. [2024-06-28 04:16:12,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 295 transitions, 3275 flow [2024-06-28 04:16:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:16:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:16:12,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-28 04:16:12,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-28 04:16:12,348 INFO L175 Difference]: Start difference. First operand has 123 places, 186 transitions, 1817 flow. Second operand 10 states and 245 transitions. [2024-06-28 04:16:12,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 295 transitions, 3275 flow [2024-06-28 04:16:12,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 295 transitions, 3196 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:12,780 INFO L231 Difference]: Finished difference. Result has 131 places, 212 transitions, 2344 flow [2024-06-28 04:16:12,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2344, PETRI_PLACES=131, PETRI_TRANSITIONS=212} [2024-06-28 04:16:12,780 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-28 04:16:12,781 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 212 transitions, 2344 flow [2024-06-28 04:16:12,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:12,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:12,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:16:12,781 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:12,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:12,782 INFO L85 PathProgramCache]: Analyzing trace with hash 242737906, now seen corresponding path program 2 times [2024-06-28 04:16:12,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:12,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271803868] [2024-06-28 04:16:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:16,133 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 04:16:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271803868] [2024-06-28 04:16:16,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271803868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:16,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:16,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:16,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045872177] [2024-06-28 04:16:16,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:16,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:16,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:16,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:16,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:16,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:16:16,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 212 transitions, 2344 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:16,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:16,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:16:16,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:21,129 INFO L124 PetriNetUnfolderBase]: 16447/22116 cut-off events. [2024-06-28 04:16:21,129 INFO L125 PetriNetUnfolderBase]: For 386751/386759 co-relation queries the response was YES. [2024-06-28 04:16:21,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128879 conditions, 22116 events. 16447/22116 cut-off events. For 386751/386759 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 114723 event pairs, 6181 based on Foata normal form. 54/22165 useless extension candidates. Maximal degree in co-relation 128821. Up to 19571 conditions per place. [2024-06-28 04:16:21,313 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 220 selfloop transitions, 76 changer transitions 0/300 dead transitions. [2024-06-28 04:16:21,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 300 transitions, 3700 flow [2024-06-28 04:16:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:16:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:16:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-06-28 04:16:21,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:16:21,330 INFO L175 Difference]: Start difference. First operand has 131 places, 212 transitions, 2344 flow. Second operand 10 states and 221 transitions. [2024-06-28 04:16:21,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 300 transitions, 3700 flow [2024-06-28 04:16:22,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 300 transitions, 3467 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-06-28 04:16:22,459 INFO L231 Difference]: Finished difference. Result has 139 places, 234 transitions, 2642 flow [2024-06-28 04:16:22,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2642, PETRI_PLACES=139, PETRI_TRANSITIONS=234} [2024-06-28 04:16:22,460 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2024-06-28 04:16:22,460 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 234 transitions, 2642 flow [2024-06-28 04:16:22,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:22,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:22,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:22,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:16:22,460 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:22,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash -244334714, now seen corresponding path program 3 times [2024-06-28 04:16:22,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:22,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071194316] [2024-06-28 04:16:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:25,498 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 04:16:25,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:25,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071194316] [2024-06-28 04:16:25,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071194316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:25,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:25,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963167371] [2024-06-28 04:16:25,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:25,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:25,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:25,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:25,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:16:25,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 234 transitions, 2642 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:25,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:25,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:16:25,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:31,019 INFO L124 PetriNetUnfolderBase]: 16907/22712 cut-off events. [2024-06-28 04:16:31,019 INFO L125 PetriNetUnfolderBase]: For 421613/421621 co-relation queries the response was YES. [2024-06-28 04:16:31,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134551 conditions, 22712 events. 16907/22712 cut-off events. For 421613/421621 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 118095 event pairs, 6209 based on Foata normal form. 54/22761 useless extension candidates. Maximal degree in co-relation 134489. Up to 19827 conditions per place. [2024-06-28 04:16:31,191 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 215 selfloop transitions, 93 changer transitions 0/312 dead transitions. [2024-06-28 04:16:31,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 312 transitions, 3850 flow [2024-06-28 04:16:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:16:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:16:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-06-28 04:16:31,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160839160839161 [2024-06-28 04:16:31,192 INFO L175 Difference]: Start difference. First operand has 139 places, 234 transitions, 2642 flow. Second operand 11 states and 238 transitions. [2024-06-28 04:16:31,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 312 transitions, 3850 flow [2024-06-28 04:16:32,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 312 transitions, 3729 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:32,230 INFO L231 Difference]: Finished difference. Result has 147 places, 248 transitions, 3018 flow [2024-06-28 04:16:32,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3018, PETRI_PLACES=147, PETRI_TRANSITIONS=248} [2024-06-28 04:16:32,231 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2024-06-28 04:16:32,231 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 248 transitions, 3018 flow [2024-06-28 04:16:32,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:32,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:32,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:32,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:16:32,232 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:32,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:32,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1733806316, now seen corresponding path program 4 times [2024-06-28 04:16:32,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:32,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618812370] [2024-06-28 04:16:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:35,706 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 04:16:35,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:35,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618812370] [2024-06-28 04:16:35,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618812370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:35,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:35,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:35,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239240760] [2024-06-28 04:16:35,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:35,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:35,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:35,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:35,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:35,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:16:35,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 248 transitions, 3018 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:35,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:35,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:16:35,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:41,390 INFO L124 PetriNetUnfolderBase]: 19739/26356 cut-off events. [2024-06-28 04:16:41,390 INFO L125 PetriNetUnfolderBase]: For 531944/531952 co-relation queries the response was YES. [2024-06-28 04:16:41,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160929 conditions, 26356 events. 19739/26356 cut-off events. For 531944/531952 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 137718 event pairs, 6508 based on Foata normal form. 54/26405 useless extension candidates. Maximal degree in co-relation 160863. Up to 20517 conditions per place. [2024-06-28 04:16:41,780 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 221 selfloop transitions, 144 changer transitions 0/369 dead transitions. [2024-06-28 04:16:41,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 369 transitions, 4838 flow [2024-06-28 04:16:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:16:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:16:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2024-06-28 04:16:41,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45104895104895104 [2024-06-28 04:16:41,781 INFO L175 Difference]: Start difference. First operand has 147 places, 248 transitions, 3018 flow. Second operand 11 states and 258 transitions. [2024-06-28 04:16:41,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 369 transitions, 4838 flow [2024-06-28 04:16:43,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 369 transitions, 4714 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:43,065 INFO L231 Difference]: Finished difference. Result has 155 places, 284 transitions, 3745 flow [2024-06-28 04:16:43,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3745, PETRI_PLACES=155, PETRI_TRANSITIONS=284} [2024-06-28 04:16:43,066 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 100 predicate places. [2024-06-28 04:16:43,066 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 284 transitions, 3745 flow [2024-06-28 04:16:43,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:43,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:43,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:43,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:16:43,066 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:43,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:43,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2037685988, now seen corresponding path program 1 times [2024-06-28 04:16:43,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:43,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557682891] [2024-06-28 04:16:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:43,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:46,531 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 04:16:46,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557682891] [2024-06-28 04:16:46,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557682891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:46,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:46,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:16:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57414473] [2024-06-28 04:16:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:46,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:16:46,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:16:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:16:46,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:16:46,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 284 transitions, 3745 flow. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:46,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:46,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:16:46,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:52,623 INFO L124 PetriNetUnfolderBase]: 19816/26604 cut-off events. [2024-06-28 04:16:52,624 INFO L125 PetriNetUnfolderBase]: For 614308/614601 co-relation queries the response was YES. [2024-06-28 04:16:52,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173271 conditions, 26604 events. 19816/26604 cut-off events. For 614308/614601 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 141240 event pairs, 5192 based on Foata normal form. 96/26507 useless extension candidates. Maximal degree in co-relation 173201. Up to 24192 conditions per place. [2024-06-28 04:16:52,919 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 262 selfloop transitions, 66 changer transitions 0/348 dead transitions. [2024-06-28 04:16:52,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 348 transitions, 4985 flow [2024-06-28 04:16:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:16:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:16:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 04:16:52,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489010989010989 [2024-06-28 04:16:52,921 INFO L175 Difference]: Start difference. First operand has 155 places, 284 transitions, 3745 flow. Second operand 7 states and 178 transitions. [2024-06-28 04:16:52,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 348 transitions, 4985 flow [2024-06-28 04:16:54,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 348 transitions, 4746 flow, removed 84 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:54,430 INFO L231 Difference]: Finished difference. Result has 157 places, 290 transitions, 3792 flow [2024-06-28 04:16:54,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3792, PETRI_PLACES=157, PETRI_TRANSITIONS=290} [2024-06-28 04:16:54,430 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 102 predicate places. [2024-06-28 04:16:54,430 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 290 transitions, 3792 flow [2024-06-28 04:16:54,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 04:16:54,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:54,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:54,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:16:54,431 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:54,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:54,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1463325670, now seen corresponding path program 2 times [2024-06-28 04:16:54,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:54,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666003796] [2024-06-28 04:16:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:54,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat