./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_power.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/safe009_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --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 03:57:54,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:57:54,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:57:54,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:57:54,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:57:54,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:57:54,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:57:54,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:57:54,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:57:54,813 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:57:54,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:57:54,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:57:54,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:57:54,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:57:54,816 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:57:54,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:57:54,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:57:54,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:57:54,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:57:54,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:57:54,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:57:54,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:57:54,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:57:54,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:57:54,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:57:54,819 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:57:54,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:57:54,819 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:57:54,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:57:54,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:57:54,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:57:54,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:57:54,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:57:54,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:57:54,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:57:54,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:57:54,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:57:54,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:57:54,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:57:54,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:57:54,823 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:57:54,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:57:54,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:57:54,823 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:57:55,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:57:55,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:57:55,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:57:55,051 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:57:55,052 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:57:55,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_power.opt.yml/witness.yml [2024-06-28 03:57:55,390 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:57:55,391 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:57:55,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_power.opt.i [2024-06-28 03:57:56,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:57:56,685 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:57:56,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_power.opt.i [2024-06-28 03:57:56,697 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2113f1c32/40e4a54ffe8c4d4ab7ff6cf4dfbcede3/FLAGc3b8d1631 [2024-06-28 03:57:56,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2113f1c32/40e4a54ffe8c4d4ab7ff6cf4dfbcede3 [2024-06-28 03:57:56,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:57:56,714 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:57:56,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:57:56,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:57:56,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:57:56,727 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:57:55" (1/2) ... [2024-06-28 03:57:56,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2042a968 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:56, skipping insertion in model container [2024-06-28 03:57:56,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:57:55" (1/2) ... [2024-06-28 03:57:56,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@729994dc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:56, skipping insertion in model container [2024-06-28 03:57:56,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:57:56" (2/2) ... [2024-06-28 03:57:56,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2042a968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:56, skipping insertion in model container [2024-06-28 03:57:56,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:57:56" (2/2) ... [2024-06-28 03:57:56,730 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:57:56,819 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:57:56,820 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 03:57:56,820 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 03:57:56,821 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 03:57:56,821 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:57:56,821 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-28 03:57:56,865 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:57:57,160 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:57:57,175 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:57:57,304 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:57:57,341 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:57:57,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57 WrapperNode [2024-06-28 03:57:57,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:57:57,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:57:57,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:57:57,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:57:57,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,396 INFO L138 Inliner]: procedures = 175, calls = 84, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 253 [2024-06-28 03:57:57,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:57:57,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:57:57,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:57:57,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:57:57,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,429 INFO L175 MemorySlicer]: Split 44 memory accesses to 2 slices as follows [2, 42]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-06-28 03:57:57,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:57:57,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:57:57,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:57:57,475 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:57:57,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (1/1) ... [2024-06-28 03:57:57,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:57:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:57:57,509 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 03:57:57,530 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 03:57:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 03:57:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 03:57:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 03:57:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 03:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:57:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:57:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:57:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:57:57,545 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:57:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:57:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 03:57:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:57:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:57:57,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:57:57,549 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 03:57:57,693 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:57:57,694 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:57:58,211 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:57:58,212 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:57:58,518 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:57:58,518 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:57:58,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:57:58 BoogieIcfgContainer [2024-06-28 03:57:58,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:57:58,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:57:58,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:57:58,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:57:58,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:57:55" (1/4) ... [2024-06-28 03:57:58,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fd6e50 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:57:58, skipping insertion in model container [2024-06-28 03:57:58,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:57:56" (2/4) ... [2024-06-28 03:57:58,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fd6e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:57:58, skipping insertion in model container [2024-06-28 03:57:58,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:57" (3/4) ... [2024-06-28 03:57:58,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fd6e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:57:58, skipping insertion in model container [2024-06-28 03:57:58,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:57:58" (4/4) ... [2024-06-28 03:57:58,538 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_power.opt.i [2024-06-28 03:57:58,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:57:58,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:57:58,561 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:57:58,678 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:57:58,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:57:58,723 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 03:57:58,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:57:58,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:57:58,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:57:58,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 03:57:58,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:57:58,753 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;@324e8171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:57:58,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:57:58,757 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:57:58,757 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:57:58,757 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:57:58,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:58,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:57:58,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:58,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:58,762 INFO L85 PathProgramCache]: Analyzing trace with hash 845599057, now seen corresponding path program 1 times [2024-06-28 03:57:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:58,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592641342] [2024-06-28 03:57:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:58,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:00,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592641342] [2024-06-28 03:58:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592641342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:00,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:00,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:58:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078597669] [2024-06-28 03:58:00,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:00,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:58:00,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:00,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:58:00,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:58:00,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 03:58:00,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 03:58:00,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:00,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 03:58:00,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:01,055 INFO L124 PetriNetUnfolderBase]: 1205/1833 cut-off events. [2024-06-28 03:58:01,056 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 03:58:01,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 1833 events. 1205/1833 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8339 event pairs, 800 based on Foata normal form. 1/1797 useless extension candidates. Maximal degree in co-relation 3726. Up to 1818 conditions per place. [2024-06-28 03:58:01,067 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 35 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 03:58:01,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 181 flow [2024-06-28 03:58:01,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:58:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:58:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-06-28 03:58:01,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-06-28 03:58:01,077 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 66 transitions. [2024-06-28 03:58:01,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 181 flow [2024-06-28 03:58:01,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:01,081 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 03:58:01,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 03:58:01,085 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 03:58:01,085 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 03:58:01,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 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 03:58:01,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:01,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:01,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:58:01,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:01,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1284884533, now seen corresponding path program 1 times [2024-06-28 03:58:01,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765741395] [2024-06-28 03:58:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:02,744 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 03:58:02,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:02,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765741395] [2024-06-28 03:58:02,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765741395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:02,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:02,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:58:02,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082182686] [2024-06-28 03:58:02,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:02,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:58:02,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:02,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:58:02,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:58:02,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 03:58:02,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 03:58:02,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:02,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 03:58:02,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:03,281 INFO L124 PetriNetUnfolderBase]: 1460/2208 cut-off events. [2024-06-28 03:58:03,281 INFO L125 PetriNetUnfolderBase]: For 387/393 co-relation queries the response was YES. [2024-06-28 03:58:03,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5081 conditions, 2208 events. 1460/2208 cut-off events. For 387/393 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9918 event pairs, 758 based on Foata normal form. 7/2210 useless extension candidates. Maximal degree in co-relation 5069. Up to 2154 conditions per place. [2024-06-28 03:58:03,291 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 46 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 03:58:03,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 262 flow [2024-06-28 03:58:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:58:03,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:58:03,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-06-28 03:58:03,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-28 03:58:03,293 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 84 transitions. [2024-06-28 03:58:03,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 262 flow [2024-06-28 03:58:03,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:58:03,295 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 136 flow [2024-06-28 03:58:03,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 03:58:03,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 03:58:03,296 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 136 flow [2024-06-28 03:58:03,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 03:58:03,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:03,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:03,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:58:03,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:03,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:03,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1176716593, now seen corresponding path program 1 times [2024-06-28 03:58:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:03,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232495121] [2024-06-28 03:58:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:03,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:05,457 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 03:58:05,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232495121] [2024-06-28 03:58:05,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232495121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:05,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:05,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:58:05,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398212873] [2024-06-28 03:58:05,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:05,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:58:05,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:05,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:58:05,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:58:05,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 03:58:05,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:05,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:05,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 03:58:05,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:06,111 INFO L124 PetriNetUnfolderBase]: 1454/2199 cut-off events. [2024-06-28 03:58:06,112 INFO L125 PetriNetUnfolderBase]: For 1112/1124 co-relation queries the response was YES. [2024-06-28 03:58:06,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5609 conditions, 2199 events. 1454/2199 cut-off events. For 1112/1124 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9869 event pairs, 628 based on Foata normal form. 11/2205 useless extension candidates. Maximal degree in co-relation 5595. Up to 2126 conditions per place. [2024-06-28 03:58:06,121 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 55 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2024-06-28 03:58:06,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 348 flow [2024-06-28 03:58:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:58:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:58:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-06-28 03:58:06,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024390243902439 [2024-06-28 03:58:06,123 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 136 flow. Second operand 5 states and 103 transitions. [2024-06-28 03:58:06,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 348 flow [2024-06-28 03:58:06,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 334 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:58:06,126 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 172 flow [2024-06-28 03:58:06,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-28 03:58:06,126 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-06-28 03:58:06,127 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 172 flow [2024-06-28 03:58:06,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:06,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:06,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:06,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:58:06,127 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:06,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2118477780, now seen corresponding path program 1 times [2024-06-28 03:58:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:06,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652124544] [2024-06-28 03:58:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:08,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:08,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652124544] [2024-06-28 03:58:08,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652124544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:08,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:08,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:58:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815884251] [2024-06-28 03:58:08,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:08,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:58:08,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:58:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:58:08,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 03:58:08,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 03:58:08,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:08,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 03:58:08,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:09,174 INFO L124 PetriNetUnfolderBase]: 1445/2184 cut-off events. [2024-06-28 03:58:09,175 INFO L125 PetriNetUnfolderBase]: For 2022/2034 co-relation queries the response was YES. [2024-06-28 03:58:09,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6088 conditions, 2184 events. 1445/2184 cut-off events. For 2022/2034 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9770 event pairs, 483 based on Foata normal form. 14/2193 useless extension candidates. Maximal degree in co-relation 6073. Up to 2073 conditions per place. [2024-06-28 03:58:09,184 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 60 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-06-28 03:58:09,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 406 flow [2024-06-28 03:58:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:58:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:58:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-28 03:58:09,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 03:58:09,189 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 172 flow. Second operand 6 states and 117 transitions. [2024-06-28 03:58:09,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 406 flow [2024-06-28 03:58:09,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 382 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:09,194 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 191 flow [2024-06-28 03:58:09,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-06-28 03:58:09,196 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-06-28 03:58:09,196 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 191 flow [2024-06-28 03:58:09,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 03:58:09,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:09,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:09,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:58:09,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:09,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:09,198 INFO L85 PathProgramCache]: Analyzing trace with hash 595435315, now seen corresponding path program 1 times [2024-06-28 03:58:09,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:09,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656580540] [2024-06-28 03:58:09,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:09,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:10,896 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 03:58:10,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:10,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656580540] [2024-06-28 03:58:10,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656580540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:10,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:10,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:58:10,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810213286] [2024-06-28 03:58:10,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:10,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:58:10,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:58:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:58:10,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 03:58:10,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 03:58:10,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:10,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 03:58:10,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:11,631 INFO L124 PetriNetUnfolderBase]: 1179/1793 cut-off events. [2024-06-28 03:58:11,631 INFO L125 PetriNetUnfolderBase]: For 2640/2640 co-relation queries the response was YES. [2024-06-28 03:58:11,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5413 conditions, 1793 events. 1179/1793 cut-off events. For 2640/2640 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8095 event pairs, 492 based on Foata normal form. 2/1791 useless extension candidates. Maximal degree in co-relation 5396. Up to 1767 conditions per place. [2024-06-28 03:58:11,641 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 47 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-06-28 03:58:11,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 351 flow [2024-06-28 03:58:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:58:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:58:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-28 03:58:11,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2024-06-28 03:58:11,646 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 191 flow. Second operand 5 states and 84 transitions. [2024-06-28 03:58:11,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 351 flow [2024-06-28 03:58:11,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 318 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:11,655 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 204 flow [2024-06-28 03:58:11,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 03:58:11,657 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-28 03:58:11,657 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 204 flow [2024-06-28 03:58:11,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 03:58:11,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:11,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:11,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:58:11,658 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:11,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1278627620, now seen corresponding path program 1 times [2024-06-28 03:58:11,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:11,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555868518] [2024-06-28 03:58:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:11,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:13,668 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 03:58:13,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555868518] [2024-06-28 03:58:13,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555868518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:13,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:13,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:58:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926077508] [2024-06-28 03:58:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:13,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:58:13,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:58:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:58:13,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:13,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 03:58:13,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:13,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:13,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:14,666 INFO L124 PetriNetUnfolderBase]: 1453/2194 cut-off events. [2024-06-28 03:58:14,666 INFO L125 PetriNetUnfolderBase]: For 4349/4349 co-relation queries the response was YES. [2024-06-28 03:58:14,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6896 conditions, 2194 events. 1453/2194 cut-off events. For 4349/4349 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9822 event pairs, 520 based on Foata normal form. 8/2199 useless extension candidates. Maximal degree in co-relation 6877. Up to 2077 conditions per place. [2024-06-28 03:58:14,677 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 68 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-06-28 03:58:14,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 86 transitions, 523 flow [2024-06-28 03:58:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:58:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:58:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 03:58:14,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:58:14,679 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 204 flow. Second operand 6 states and 105 transitions. [2024-06-28 03:58:14,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 86 transitions, 523 flow [2024-06-28 03:58:14,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 86 transitions, 488 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:14,683 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 303 flow [2024-06-28 03:58:14,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-06-28 03:58:14,687 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-28 03:58:14,687 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 303 flow [2024-06-28 03:58:14,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 03:58:14,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:14,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:14,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:58:14,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:14,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash 223064681, now seen corresponding path program 1 times [2024-06-28 03:58:14,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:14,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683852154] [2024-06-28 03:58:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:17,159 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 03:58:17,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:17,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683852154] [2024-06-28 03:58:17,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683852154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:17,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:17,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:58:17,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83118060] [2024-06-28 03:58:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:17,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:58:17,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:58:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:58:17,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:17,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 303 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 03:58:17,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:17,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:17,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:17,929 INFO L124 PetriNetUnfolderBase]: 1466/2215 cut-off events. [2024-06-28 03:58:17,930 INFO L125 PetriNetUnfolderBase]: For 6245/6257 co-relation queries the response was YES. [2024-06-28 03:58:17,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7885 conditions, 2215 events. 1466/2215 cut-off events. For 6245/6257 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9919 event pairs, 538 based on Foata normal form. 10/2220 useless extension candidates. Maximal degree in co-relation 7863. Up to 2150 conditions per place. [2024-06-28 03:58:17,964 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 70 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-28 03:58:17,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 552 flow [2024-06-28 03:58:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:58:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:58:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-28 03:58:17,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 03:58:17,967 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 303 flow. Second operand 6 states and 99 transitions. [2024-06-28 03:58:17,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 552 flow [2024-06-28 03:58:17,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 540 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 03:58:17,973 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 353 flow [2024-06-28 03:58:17,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=353, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-06-28 03:58:17,973 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-28 03:58:17,973 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 353 flow [2024-06-28 03:58:17,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 03:58:17,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:17,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:17,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:58:17,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:17,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash -574510261, now seen corresponding path program 1 times [2024-06-28 03:58:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:17,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727960164] [2024-06-28 03:58:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:19,802 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 03:58:19,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:19,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727960164] [2024-06-28 03:58:19,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727960164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:19,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:19,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:58:19,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975170147] [2024-06-28 03:58:19,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:19,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:58:19,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:19,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:58:19,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:58:19,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:19,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 353 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 03:58:19,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:19,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:19,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:21,244 INFO L124 PetriNetUnfolderBase]: 1584/2381 cut-off events. [2024-06-28 03:58:21,244 INFO L125 PetriNetUnfolderBase]: For 8558/8570 co-relation queries the response was YES. [2024-06-28 03:58:21,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9024 conditions, 2381 events. 1584/2381 cut-off events. For 8558/8570 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10743 event pairs, 485 based on Foata normal form. 16/2392 useless extension candidates. Maximal degree in co-relation 8999. Up to 2134 conditions per place. [2024-06-28 03:58:21,257 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 67 selfloop transitions, 32 changer transitions 0/102 dead transitions. [2024-06-28 03:58:21,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 727 flow [2024-06-28 03:58:21,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:21,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 03:58:21,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 03:58:21,259 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 353 flow. Second operand 8 states and 128 transitions. [2024-06-28 03:58:21,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 727 flow [2024-06-28 03:58:21,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 689 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:21,264 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 515 flow [2024-06-28 03:58:21,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=515, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2024-06-28 03:58:21,265 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-28 03:58:21,265 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 515 flow [2024-06-28 03:58:21,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 03:58:21,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:21,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:21,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:58:21,266 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:21,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:21,266 INFO L85 PathProgramCache]: Analyzing trace with hash -592385047, now seen corresponding path program 2 times [2024-06-28 03:58:21,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473641262] [2024-06-28 03:58:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:23,125 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 03:58:23,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:23,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473641262] [2024-06-28 03:58:23,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473641262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:23,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:23,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:58:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442958837] [2024-06-28 03:58:23,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:23,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:58:23,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:58:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:58:23,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:23,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 515 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 03:58:23,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:23,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:23,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:24,132 INFO L124 PetriNetUnfolderBase]: 1605/2411 cut-off events. [2024-06-28 03:58:24,133 INFO L125 PetriNetUnfolderBase]: For 11571/11583 co-relation queries the response was YES. [2024-06-28 03:58:24,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10269 conditions, 2411 events. 1605/2411 cut-off events. For 11571/11583 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10816 event pairs, 554 based on Foata normal form. 10/2416 useless extension candidates. Maximal degree in co-relation 10241. Up to 2320 conditions per place. [2024-06-28 03:58:24,145 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 87 selfloop transitions, 18 changer transitions 0/108 dead transitions. [2024-06-28 03:58:24,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 108 transitions, 891 flow [2024-06-28 03:58:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 03:58:24,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397212543554007 [2024-06-28 03:58:24,147 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 515 flow. Second operand 7 states and 114 transitions. [2024-06-28 03:58:24,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 108 transitions, 891 flow [2024-06-28 03:58:24,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 108 transitions, 848 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:24,156 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 609 flow [2024-06-28 03:58:24,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=609, PETRI_PLACES=72, PETRI_TRANSITIONS=82} [2024-06-28 03:58:24,157 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-28 03:58:24,157 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 609 flow [2024-06-28 03:58:24,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 03:58:24,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:24,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:24,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:58:24,158 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:24,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash 400553507, now seen corresponding path program 2 times [2024-06-28 03:58:24,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:24,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004815656] [2024-06-28 03:58:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:26,046 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 03:58:26,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:26,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004815656] [2024-06-28 03:58:26,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004815656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:26,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:26,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:58:26,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079970383] [2024-06-28 03:58:26,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:26,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:58:26,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:26,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:58:26,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:58:26,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:26,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 82 transitions, 609 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 03:58:26,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:26,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:26,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:27,326 INFO L124 PetriNetUnfolderBase]: 1655/2481 cut-off events. [2024-06-28 03:58:27,326 INFO L125 PetriNetUnfolderBase]: For 12588/12600 co-relation queries the response was YES. [2024-06-28 03:58:27,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11033 conditions, 2481 events. 1655/2481 cut-off events. For 12588/12600 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11242 event pairs, 492 based on Foata normal form. 16/2492 useless extension candidates. Maximal degree in co-relation 11002. Up to 2084 conditions per place. [2024-06-28 03:58:27,337 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 85 selfloop transitions, 42 changer transitions 0/130 dead transitions. [2024-06-28 03:58:27,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 130 transitions, 1121 flow [2024-06-28 03:58:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 03:58:27,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:58:27,339 INFO L175 Difference]: Start difference. First operand has 72 places, 82 transitions, 609 flow. Second operand 7 states and 126 transitions. [2024-06-28 03:58:27,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 130 transitions, 1121 flow [2024-06-28 03:58:27,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 130 transitions, 1078 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:27,351 INFO L231 Difference]: Finished difference. Result has 78 places, 96 transitions, 823 flow [2024-06-28 03:58:27,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=78, PETRI_TRANSITIONS=96} [2024-06-28 03:58:27,351 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-06-28 03:58:27,351 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 96 transitions, 823 flow [2024-06-28 03:58:27,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 03:58:27,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:27,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:27,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:58:27,352 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:27,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:27,352 INFO L85 PathProgramCache]: Analyzing trace with hash 400562435, now seen corresponding path program 1 times [2024-06-28 03:58:27,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:27,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814983390] [2024-06-28 03:58:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:27,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:30,030 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 03:58:30,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:30,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814983390] [2024-06-28 03:58:30,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814983390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:30,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:30,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:30,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393295598] [2024-06-28 03:58:30,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:30,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:30,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:30,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:30,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 823 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:30,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:30,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:30,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:31,135 INFO L124 PetriNetUnfolderBase]: 1707/2563 cut-off events. [2024-06-28 03:58:31,135 INFO L125 PetriNetUnfolderBase]: For 17028/17028 co-relation queries the response was YES. [2024-06-28 03:58:31,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12383 conditions, 2563 events. 1707/2563 cut-off events. For 17028/17028 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11715 event pairs, 499 based on Foata normal form. 16/2576 useless extension candidates. Maximal degree in co-relation 12348. Up to 2352 conditions per place. [2024-06-28 03:58:31,176 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 115 selfloop transitions, 19 changer transitions 0/137 dead transitions. [2024-06-28 03:58:31,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 137 transitions, 1275 flow [2024-06-28 03:58:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:58:31,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205574912891986 [2024-06-28 03:58:31,179 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 823 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:58:31,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 137 transitions, 1275 flow [2024-06-28 03:58:31,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 137 transitions, 1225 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-28 03:58:31,196 INFO L231 Difference]: Finished difference. Result has 84 places, 98 transitions, 851 flow [2024-06-28 03:58:31,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=851, PETRI_PLACES=84, PETRI_TRANSITIONS=98} [2024-06-28 03:58:31,197 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 42 predicate places. [2024-06-28 03:58:31,197 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 98 transitions, 851 flow [2024-06-28 03:58:31,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:31,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:31,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:58:31,198 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:31,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1675017807, now seen corresponding path program 1 times [2024-06-28 03:58:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:31,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396378405] [2024-06-28 03:58:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:31,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:34,110 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 03:58:34,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:34,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396378405] [2024-06-28 03:58:34,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396378405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:34,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:34,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:34,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617027420] [2024-06-28 03:58:34,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:34,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:34,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:34,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:34,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:34,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 98 transitions, 851 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:34,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:34,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:34,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:35,155 INFO L124 PetriNetUnfolderBase]: 1738/2612 cut-off events. [2024-06-28 03:58:35,155 INFO L125 PetriNetUnfolderBase]: For 17884/17927 co-relation queries the response was YES. [2024-06-28 03:58:35,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12488 conditions, 2612 events. 1738/2612 cut-off events. For 17884/17927 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11957 event pairs, 581 based on Foata normal form. 27/2632 useless extension candidates. Maximal degree in co-relation 12450. Up to 2463 conditions per place. [2024-06-28 03:58:35,188 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 114 selfloop transitions, 26 changer transitions 0/143 dead transitions. [2024-06-28 03:58:35,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 143 transitions, 1337 flow [2024-06-28 03:58:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:58:35,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:58:35,190 INFO L175 Difference]: Start difference. First operand has 84 places, 98 transitions, 851 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:58:35,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 143 transitions, 1337 flow [2024-06-28 03:58:35,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 143 transitions, 1285 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:35,205 INFO L231 Difference]: Finished difference. Result has 87 places, 104 transitions, 937 flow [2024-06-28 03:58:35,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=87, PETRI_TRANSITIONS=104} [2024-06-28 03:58:35,205 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-28 03:58:35,206 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 104 transitions, 937 flow [2024-06-28 03:58:35,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:35,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:35,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:35,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:58:35,206 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:35,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:35,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1187784304, now seen corresponding path program 1 times [2024-06-28 03:58:35,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:35,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719940509] [2024-06-28 03:58:35,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:35,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:38,270 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 03:58:38,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:38,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719940509] [2024-06-28 03:58:38,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719940509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:38,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:38,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251281657] [2024-06-28 03:58:38,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:38,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:38,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:38,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:38,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 937 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:38,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:38,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:38,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:39,448 INFO L124 PetriNetUnfolderBase]: 1856/2776 cut-off events. [2024-06-28 03:58:39,449 INFO L125 PetriNetUnfolderBase]: For 21152/21164 co-relation queries the response was YES. [2024-06-28 03:58:39,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13678 conditions, 2776 events. 1856/2776 cut-off events. For 21152/21164 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12759 event pairs, 550 based on Foata normal form. 16/2787 useless extension candidates. Maximal degree in co-relation 13639. Up to 2608 conditions per place. [2024-06-28 03:58:39,462 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 128 selfloop transitions, 26 changer transitions 0/157 dead transitions. [2024-06-28 03:58:39,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 157 transitions, 1575 flow [2024-06-28 03:58:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:58:39,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:58:39,464 INFO L175 Difference]: Start difference. First operand has 87 places, 104 transitions, 937 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:58:39,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 157 transitions, 1575 flow [2024-06-28 03:58:39,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 157 transitions, 1518 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:39,482 INFO L231 Difference]: Finished difference. Result has 94 places, 120 transitions, 1154 flow [2024-06-28 03:58:39,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1154, PETRI_PLACES=94, PETRI_TRANSITIONS=120} [2024-06-28 03:58:39,483 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-28 03:58:39,483 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 120 transitions, 1154 flow [2024-06-28 03:58:39,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:39,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:39,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:39,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:58:39,484 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:39,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1187784459, now seen corresponding path program 2 times [2024-06-28 03:58:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:39,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212169599] [2024-06-28 03:58:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:42,159 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 03:58:42,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:42,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212169599] [2024-06-28 03:58:42,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212169599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:42,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:42,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:42,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93185936] [2024-06-28 03:58:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:42,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:42,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:42,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:42,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:42,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 120 transitions, 1154 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:42,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:42,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:42,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:42,968 INFO L124 PetriNetUnfolderBase]: 1851/2769 cut-off events. [2024-06-28 03:58:42,969 INFO L125 PetriNetUnfolderBase]: For 25541/25556 co-relation queries the response was YES. [2024-06-28 03:58:42,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14728 conditions, 2769 events. 1851/2769 cut-off events. For 25541/25556 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12689 event pairs, 578 based on Foata normal form. 12/2776 useless extension candidates. Maximal degree in co-relation 14684. Up to 2693 conditions per place. [2024-06-28 03:58:42,985 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 133 selfloop transitions, 15 changer transitions 0/151 dead transitions. [2024-06-28 03:58:42,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 151 transitions, 1564 flow [2024-06-28 03:58:42,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 03:58:42,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39372822299651566 [2024-06-28 03:58:42,987 INFO L175 Difference]: Start difference. First operand has 94 places, 120 transitions, 1154 flow. Second operand 7 states and 113 transitions. [2024-06-28 03:58:42,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 151 transitions, 1564 flow [2024-06-28 03:58:43,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 151 transitions, 1497 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-28 03:58:43,008 INFO L231 Difference]: Finished difference. Result has 99 places, 123 transitions, 1177 flow [2024-06-28 03:58:43,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1177, PETRI_PLACES=99, PETRI_TRANSITIONS=123} [2024-06-28 03:58:43,009 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-28 03:58:43,009 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 123 transitions, 1177 flow [2024-06-28 03:58:43,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:43,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:43,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:43,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:58:43,010 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:43,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1184059654, now seen corresponding path program 2 times [2024-06-28 03:58:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:43,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77821257] [2024-06-28 03:58:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:44,968 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 03:58:44,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:44,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77821257] [2024-06-28 03:58:44,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77821257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:44,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:44,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:44,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729474837] [2024-06-28 03:58:44,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:44,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:44,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:44,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:44,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:44,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 123 transitions, 1177 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:44,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:44,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:44,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:46,615 INFO L124 PetriNetUnfolderBase]: 2142/3192 cut-off events. [2024-06-28 03:58:46,615 INFO L125 PetriNetUnfolderBase]: For 33487/33502 co-relation queries the response was YES. [2024-06-28 03:58:46,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17456 conditions, 3192 events. 2142/3192 cut-off events. For 33487/33502 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14987 event pairs, 485 based on Foata normal form. 18/3205 useless extension candidates. Maximal degree in co-relation 17410. Up to 2635 conditions per place. [2024-06-28 03:58:46,635 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 134 selfloop transitions, 65 changer transitions 0/202 dead transitions. [2024-06-28 03:58:46,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 202 transitions, 2160 flow [2024-06-28 03:58:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:58:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:58:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 03:58:46,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035476718403548 [2024-06-28 03:58:46,637 INFO L175 Difference]: Start difference. First operand has 99 places, 123 transitions, 1177 flow. Second operand 11 states and 182 transitions. [2024-06-28 03:58:46,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 202 transitions, 2160 flow [2024-06-28 03:58:46,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 202 transitions, 2094 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:46,668 INFO L231 Difference]: Finished difference. Result has 108 places, 157 transitions, 1675 flow [2024-06-28 03:58:46,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1675, PETRI_PLACES=108, PETRI_TRANSITIONS=157} [2024-06-28 03:58:46,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2024-06-28 03:58:46,669 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 157 transitions, 1675 flow [2024-06-28 03:58:46,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:46,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:46,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:46,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:58:46,670 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:46,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:46,670 INFO L85 PathProgramCache]: Analyzing trace with hash -629952634, now seen corresponding path program 3 times [2024-06-28 03:58:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:46,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406671851] [2024-06-28 03:58:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:46,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:48,823 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 03:58:48,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406671851] [2024-06-28 03:58:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406671851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:48,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229532167] [2024-06-28 03:58:48,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:48,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:48,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:48,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 157 transitions, 1675 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:48,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:48,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:48,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:50,555 INFO L124 PetriNetUnfolderBase]: 2392/3551 cut-off events. [2024-06-28 03:58:50,555 INFO L125 PetriNetUnfolderBase]: For 43349/43367 co-relation queries the response was YES. [2024-06-28 03:58:50,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21741 conditions, 3551 events. 2392/3551 cut-off events. For 43349/43367 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16991 event pairs, 500 based on Foata normal form. 21/3567 useless extension candidates. Maximal degree in co-relation 21691. Up to 2633 conditions per place. [2024-06-28 03:58:50,579 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 150 selfloop transitions, 86 changer transitions 0/239 dead transitions. [2024-06-28 03:58:50,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 239 transitions, 2827 flow [2024-06-28 03:58:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:58:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:58:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 03:58:50,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43658536585365854 [2024-06-28 03:58:50,581 INFO L175 Difference]: Start difference. First operand has 108 places, 157 transitions, 1675 flow. Second operand 10 states and 179 transitions. [2024-06-28 03:58:50,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 239 transitions, 2827 flow [2024-06-28 03:58:50,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 239 transitions, 2684 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:50,650 INFO L231 Difference]: Finished difference. Result has 116 places, 181 transitions, 2084 flow [2024-06-28 03:58:50,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2084, PETRI_PLACES=116, PETRI_TRANSITIONS=181} [2024-06-28 03:58:50,650 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2024-06-28 03:58:50,651 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 181 transitions, 2084 flow [2024-06-28 03:58:50,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:50,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:50,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:50,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:58:50,651 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:50,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1184065389, now seen corresponding path program 3 times [2024-06-28 03:58:50,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:50,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904888563] [2024-06-28 03:58:50,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:50,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:52,622 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 03:58:52,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:52,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904888563] [2024-06-28 03:58:52,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904888563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:52,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:52,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:52,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975164994] [2024-06-28 03:58:52,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:52,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:52,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:52,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:52,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 181 transitions, 2084 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:52,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:52,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:52,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:53,744 INFO L124 PetriNetUnfolderBase]: 2387/3544 cut-off events. [2024-06-28 03:58:53,744 INFO L125 PetriNetUnfolderBase]: For 50641/50659 co-relation queries the response was YES. [2024-06-28 03:58:53,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23317 conditions, 3544 events. 2387/3544 cut-off events. For 50641/50659 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16781 event pairs, 603 based on Foata normal form. 14/3553 useless extension candidates. Maximal degree in co-relation 23263. Up to 3459 conditions per place. [2024-06-28 03:58:53,770 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 186 selfloop transitions, 16 changer transitions 0/205 dead transitions. [2024-06-28 03:58:53,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 205 transitions, 2546 flow [2024-06-28 03:58:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 03:58:53,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832752613240418 [2024-06-28 03:58:53,773 INFO L175 Difference]: Start difference. First operand has 116 places, 181 transitions, 2084 flow. Second operand 7 states and 110 transitions. [2024-06-28 03:58:53,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 205 transitions, 2546 flow [2024-06-28 03:58:53,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 205 transitions, 2365 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:53,845 INFO L231 Difference]: Finished difference. Result has 118 places, 181 transitions, 1943 flow [2024-06-28 03:58:53,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1943, PETRI_PLACES=118, PETRI_TRANSITIONS=181} [2024-06-28 03:58:53,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-06-28 03:58:53,846 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 181 transitions, 1943 flow [2024-06-28 03:58:53,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:53,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:53,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:53,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:58:53,847 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:53,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:53,847 INFO L85 PathProgramCache]: Analyzing trace with hash -467741318, now seen corresponding path program 4 times [2024-06-28 03:58:53,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:53,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139782381] [2024-06-28 03:58:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:53,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:55,833 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 03:58:55,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139782381] [2024-06-28 03:58:55,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139782381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:55,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:55,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:55,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393614536] [2024-06-28 03:58:55,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:55,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:55,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:55,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:55,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:55,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 181 transitions, 1943 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:55,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:55,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:55,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:57,202 INFO L124 PetriNetUnfolderBase]: 2405/3570 cut-off events. [2024-06-28 03:58:57,203 INFO L125 PetriNetUnfolderBase]: For 53370/53388 co-relation queries the response was YES. [2024-06-28 03:58:57,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23301 conditions, 3570 events. 2405/3570 cut-off events. For 53370/53388 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16948 event pairs, 567 based on Foata normal form. 20/3585 useless extension candidates. Maximal degree in co-relation 23245. Up to 3366 conditions per place. [2024-06-28 03:58:57,229 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 191 selfloop transitions, 43 changer transitions 0/237 dead transitions. [2024-06-28 03:58:57,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 237 transitions, 2880 flow [2024-06-28 03:58:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:58:57,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:58:57,234 INFO L175 Difference]: Start difference. First operand has 118 places, 181 transitions, 1943 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:58:57,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 237 transitions, 2880 flow [2024-06-28 03:58:57,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 237 transitions, 2840 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:57,302 INFO L231 Difference]: Finished difference. Result has 124 places, 203 transitions, 2365 flow [2024-06-28 03:58:57,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2365, PETRI_PLACES=124, PETRI_TRANSITIONS=203} [2024-06-28 03:58:57,303 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-06-28 03:58:57,303 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 203 transitions, 2365 flow [2024-06-28 03:58:57,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:57,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:57,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:57,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:58:57,303 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:57,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:57,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1094440153, now seen corresponding path program 1 times [2024-06-28 03:58:57,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:57,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557370500] [2024-06-28 03:58:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:57,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:58,276 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 03:58:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:58,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557370500] [2024-06-28 03:58:58,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557370500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:58,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:58,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:58:58,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402129616] [2024-06-28 03:58:58,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:58,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:58:58,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:58,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:58:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:58:58,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:58:58,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 203 transitions, 2365 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 03:58:58,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:58,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:58:58,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:59,359 INFO L124 PetriNetUnfolderBase]: 2399/3560 cut-off events. [2024-06-28 03:58:59,360 INFO L125 PetriNetUnfolderBase]: For 58689/58689 co-relation queries the response was YES. [2024-06-28 03:58:59,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24593 conditions, 3560 events. 2399/3560 cut-off events. For 58689/58689 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16969 event pairs, 581 based on Foata normal form. 2/3559 useless extension candidates. Maximal degree in co-relation 24532. Up to 3540 conditions per place. [2024-06-28 03:58:59,400 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 202 selfloop transitions, 10 changer transitions 0/215 dead transitions. [2024-06-28 03:58:59,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 215 transitions, 2832 flow [2024-06-28 03:58:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:58:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:58:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-06-28 03:58:59,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37073170731707317 [2024-06-28 03:58:59,417 INFO L175 Difference]: Start difference. First operand has 124 places, 203 transitions, 2365 flow. Second operand 5 states and 76 transitions. [2024-06-28 03:58:59,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 215 transitions, 2832 flow [2024-06-28 03:58:59,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 215 transitions, 2710 flow, removed 60 selfloop flow, removed 1 redundant places. [2024-06-28 03:58:59,501 INFO L231 Difference]: Finished difference. Result has 129 places, 204 transitions, 2287 flow [2024-06-28 03:58:59,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2287, PETRI_PLACES=129, PETRI_TRANSITIONS=204} [2024-06-28 03:58:59,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 87 predicate places. [2024-06-28 03:58:59,501 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 204 transitions, 2287 flow [2024-06-28 03:58:59,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 03:58:59,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:59,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:59,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:58:59,502 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:59,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:59,502 INFO L85 PathProgramCache]: Analyzing trace with hash -386003000, now seen corresponding path program 1 times [2024-06-28 03:58:59,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:59,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307109730] [2024-06-28 03:58:59,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:59,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:01,806 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 03:59:01,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:01,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307109730] [2024-06-28 03:59:01,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307109730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:01,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:01,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:01,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702315497] [2024-06-28 03:59:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:01,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:01,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:01,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:01,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:01,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 204 transitions, 2287 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:01,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:01,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:01,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:03,096 INFO L124 PetriNetUnfolderBase]: 2447/3640 cut-off events. [2024-06-28 03:59:03,096 INFO L125 PetriNetUnfolderBase]: For 65694/65756 co-relation queries the response was YES. [2024-06-28 03:59:03,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25237 conditions, 3640 events. 2447/3640 cut-off events. For 65694/65756 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17507 event pairs, 462 based on Foata normal form. 38/3671 useless extension candidates. Maximal degree in co-relation 25172. Up to 3404 conditions per place. [2024-06-28 03:59:03,124 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 217 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2024-06-28 03:59:03,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 249 transitions, 3051 flow [2024-06-28 03:59:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:59:03,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-28 03:59:03,126 INFO L175 Difference]: Start difference. First operand has 129 places, 204 transitions, 2287 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:59:03,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 249 transitions, 3051 flow [2024-06-28 03:59:03,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 249 transitions, 3027 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 03:59:03,200 INFO L231 Difference]: Finished difference. Result has 134 places, 208 transitions, 2436 flow [2024-06-28 03:59:03,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2263, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2436, PETRI_PLACES=134, PETRI_TRANSITIONS=208} [2024-06-28 03:59:03,201 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2024-06-28 03:59:03,201 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 208 transitions, 2436 flow [2024-06-28 03:59:03,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:03,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:03,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:03,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:59:03,201 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:03,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:03,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1830592964, now seen corresponding path program 1 times [2024-06-28 03:59:03,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:03,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544317836] [2024-06-28 03:59:03,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:03,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:06,354 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 03:59:06,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:06,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544317836] [2024-06-28 03:59:06,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544317836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:06,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:06,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:06,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75910673] [2024-06-28 03:59:06,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:06,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:06,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:06,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:06,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:06,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 208 transitions, 2436 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:06,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:06,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:06,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:08,182 INFO L124 PetriNetUnfolderBase]: 2672/3956 cut-off events. [2024-06-28 03:59:08,183 INFO L125 PetriNetUnfolderBase]: For 77785/77847 co-relation queries the response was YES. [2024-06-28 03:59:08,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28048 conditions, 3956 events. 2672/3956 cut-off events. For 77785/77847 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 19230 event pairs, 496 based on Foata normal form. 42/3991 useless extension candidates. Maximal degree in co-relation 27982. Up to 3254 conditions per place. [2024-06-28 03:59:08,211 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 233 selfloop transitions, 72 changer transitions 0/308 dead transitions. [2024-06-28 03:59:08,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 308 transitions, 3911 flow [2024-06-28 03:59:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:59:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:59:08,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 03:59:08,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611973392461197 [2024-06-28 03:59:08,213 INFO L175 Difference]: Start difference. First operand has 134 places, 208 transitions, 2436 flow. Second operand 11 states and 208 transitions. [2024-06-28 03:59:08,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 308 transitions, 3911 flow [2024-06-28 03:59:08,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 308 transitions, 3819 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:08,302 INFO L231 Difference]: Finished difference. Result has 144 places, 230 transitions, 2869 flow [2024-06-28 03:59:08,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2869, PETRI_PLACES=144, PETRI_TRANSITIONS=230} [2024-06-28 03:59:08,303 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2024-06-28 03:59:08,303 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 230 transitions, 2869 flow [2024-06-28 03:59:08,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:08,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:08,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:08,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:59:08,304 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:08,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1830592840, now seen corresponding path program 2 times [2024-06-28 03:59:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806009020] [2024-06-28 03:59:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:08,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:11,727 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 03:59:11,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:11,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806009020] [2024-06-28 03:59:11,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806009020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:11,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:11,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:11,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535313522] [2024-06-28 03:59:11,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:11,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:11,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:11,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:11,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:11,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:11,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 230 transitions, 2869 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:11,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:11,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:11,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:13,112 INFO L124 PetriNetUnfolderBase]: 2692/3988 cut-off events. [2024-06-28 03:59:13,112 INFO L125 PetriNetUnfolderBase]: For 87918/87980 co-relation queries the response was YES. [2024-06-28 03:59:13,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29726 conditions, 3988 events. 2692/3988 cut-off events. For 87918/87980 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 19422 event pairs, 592 based on Foata normal form. 38/4019 useless extension candidates. Maximal degree in co-relation 29655. Up to 3808 conditions per place. [2024-06-28 03:59:13,141 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 235 selfloop transitions, 32 changer transitions 0/270 dead transitions. [2024-06-28 03:59:13,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 270 transitions, 3535 flow [2024-06-28 03:59:13,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:13,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:59:13,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-28 03:59:13,143 INFO L175 Difference]: Start difference. First operand has 144 places, 230 transitions, 2869 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:59:13,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 270 transitions, 3535 flow [2024-06-28 03:59:13,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 270 transitions, 3388 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 03:59:13,245 INFO L231 Difference]: Finished difference. Result has 147 places, 232 transitions, 2837 flow [2024-06-28 03:59:13,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2837, PETRI_PLACES=147, PETRI_TRANSITIONS=232} [2024-06-28 03:59:13,245 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 03:59:13,245 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 232 transitions, 2837 flow [2024-06-28 03:59:13,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:13,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:13,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:13,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:59:13,246 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:13,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1833394124, now seen corresponding path program 2 times [2024-06-28 03:59:13,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:13,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162602239] [2024-06-28 03:59:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:13,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:16,309 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 03:59:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:16,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162602239] [2024-06-28 03:59:16,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162602239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:16,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:16,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:16,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231307305] [2024-06-28 03:59:16,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:16,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:16,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:16,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:16,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:16,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:16,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 232 transitions, 2837 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:16,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:16,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:16,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:17,811 INFO L124 PetriNetUnfolderBase]: 2746/4064 cut-off events. [2024-06-28 03:59:17,811 INFO L125 PetriNetUnfolderBase]: For 92872/92893 co-relation queries the response was YES. [2024-06-28 03:59:17,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30238 conditions, 4064 events. 2746/4064 cut-off events. For 92872/92893 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19813 event pairs, 538 based on Foata normal form. 22/4081 useless extension candidates. Maximal degree in co-relation 30165. Up to 3833 conditions per place. [2024-06-28 03:59:17,843 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 243 selfloop transitions, 35 changer transitions 0/281 dead transitions. [2024-06-28 03:59:17,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 281 transitions, 3756 flow [2024-06-28 03:59:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:59:17,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:59:17,845 INFO L175 Difference]: Start difference. First operand has 147 places, 232 transitions, 2837 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:59:17,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 281 transitions, 3756 flow [2024-06-28 03:59:17,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 281 transitions, 3663 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:17,958 INFO L231 Difference]: Finished difference. Result has 150 places, 236 transitions, 2911 flow [2024-06-28 03:59:17,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2911, PETRI_PLACES=150, PETRI_TRANSITIONS=236} [2024-06-28 03:59:17,959 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-28 03:59:17,959 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 236 transitions, 2911 flow [2024-06-28 03:59:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:17,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:17,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:17,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:59:17,960 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1833389350, now seen corresponding path program 3 times [2024-06-28 03:59:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81339039] [2024-06-28 03:59:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:21,278 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 03:59:21,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:21,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81339039] [2024-06-28 03:59:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81339039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:21,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284682759] [2024-06-28 03:59:21,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:21,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:21,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:21,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:21,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 236 transitions, 2911 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:21,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:21,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:21,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:22,641 INFO L124 PetriNetUnfolderBase]: 2738/4052 cut-off events. [2024-06-28 03:59:22,642 INFO L125 PetriNetUnfolderBase]: For 98356/98377 co-relation queries the response was YES. [2024-06-28 03:59:22,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30713 conditions, 4052 events. 2738/4052 cut-off events. For 98356/98377 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 19695 event pairs, 595 based on Foata normal form. 18/4065 useless extension candidates. Maximal degree in co-relation 30639. Up to 3954 conditions per place. [2024-06-28 03:59:22,676 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 251 selfloop transitions, 18 changer transitions 0/272 dead transitions. [2024-06-28 03:59:22,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 272 transitions, 3593 flow [2024-06-28 03:59:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:59:22,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-28 03:59:22,678 INFO L175 Difference]: Start difference. First operand has 150 places, 236 transitions, 2911 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:59:22,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 272 transitions, 3593 flow [2024-06-28 03:59:22,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 272 transitions, 3462 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:22,798 INFO L231 Difference]: Finished difference. Result has 151 places, 238 transitions, 2889 flow [2024-06-28 03:59:22,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2889, PETRI_PLACES=151, PETRI_TRANSITIONS=238} [2024-06-28 03:59:22,798 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 109 predicate places. [2024-06-28 03:59:22,798 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 238 transitions, 2889 flow [2024-06-28 03:59:22,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:22,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:22,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:22,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:59:22,800 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:22,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:22,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1833389474, now seen corresponding path program 3 times [2024-06-28 03:59:22,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:22,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646581287] [2024-06-28 03:59:22,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:22,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:25,679 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 03:59:25,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:25,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646581287] [2024-06-28 03:59:25,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646581287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:25,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:25,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:25,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627620350] [2024-06-28 03:59:25,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:25,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:25,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:25,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:25,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:25,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:25,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 238 transitions, 2889 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:25,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:25,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:25,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:27,270 INFO L124 PetriNetUnfolderBase]: 2840/4198 cut-off events. [2024-06-28 03:59:27,270 INFO L125 PetriNetUnfolderBase]: For 108707/108769 co-relation queries the response was YES. [2024-06-28 03:59:27,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31940 conditions, 4198 events. 2840/4198 cut-off events. For 108707/108769 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 20594 event pairs, 524 based on Foata normal form. 42/4233 useless extension candidates. Maximal degree in co-relation 31865. Up to 3616 conditions per place. [2024-06-28 03:59:27,305 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 234 selfloop transitions, 65 changer transitions 0/302 dead transitions. [2024-06-28 03:59:27,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 302 transitions, 4062 flow [2024-06-28 03:59:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:59:27,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-28 03:59:27,307 INFO L175 Difference]: Start difference. First operand has 151 places, 238 transitions, 2889 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:59:27,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 302 transitions, 4062 flow [2024-06-28 03:59:27,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 302 transitions, 3971 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:27,452 INFO L231 Difference]: Finished difference. Result has 155 places, 246 transitions, 3123 flow [2024-06-28 03:59:27,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3123, PETRI_PLACES=155, PETRI_TRANSITIONS=246} [2024-06-28 03:59:27,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2024-06-28 03:59:27,453 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 246 transitions, 3123 flow [2024-06-28 03:59:27,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:27,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:27,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:27,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:59:27,454 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:27,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1766662680, now seen corresponding path program 1 times [2024-06-28 03:59:27,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:27,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147078908] [2024-06-28 03:59:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:27,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:29,922 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 03:59:29,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:29,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147078908] [2024-06-28 03:59:29,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147078908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:29,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:29,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:29,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124400275] [2024-06-28 03:59:29,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:29,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:29,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:29,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:29,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:29,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:29,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 246 transitions, 3123 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:29,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:29,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:29,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:31,744 INFO L124 PetriNetUnfolderBase]: 2863/4229 cut-off events. [2024-06-28 03:59:31,745 INFO L125 PetriNetUnfolderBase]: For 117916/117937 co-relation queries the response was YES. [2024-06-28 03:59:31,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33198 conditions, 4229 events. 2863/4229 cut-off events. For 117916/117937 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 20700 event pairs, 572 based on Foata normal form. 20/4244 useless extension candidates. Maximal degree in co-relation 33121. Up to 3916 conditions per place. [2024-06-28 03:59:31,780 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 228 selfloop transitions, 56 changer transitions 0/287 dead transitions. [2024-06-28 03:59:31,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 287 transitions, 4011 flow [2024-06-28 03:59:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 03:59:31,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39295392953929537 [2024-06-28 03:59:31,781 INFO L175 Difference]: Start difference. First operand has 155 places, 246 transitions, 3123 flow. Second operand 9 states and 145 transitions. [2024-06-28 03:59:31,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 287 transitions, 4011 flow [2024-06-28 03:59:31,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 287 transitions, 3830 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 03:59:31,929 INFO L231 Difference]: Finished difference. Result has 159 places, 253 transitions, 3189 flow [2024-06-28 03:59:31,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2942, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3189, PETRI_PLACES=159, PETRI_TRANSITIONS=253} [2024-06-28 03:59:31,930 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-06-28 03:59:31,931 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 253 transitions, 3189 flow [2024-06-28 03:59:31,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:31,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:31,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:31,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:59:31,931 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:31,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1948865218, now seen corresponding path program 1 times [2024-06-28 03:59:31,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:31,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881527218] [2024-06-28 03:59:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:31,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:34,585 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 03:59:34,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:34,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881527218] [2024-06-28 03:59:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881527218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:34,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:34,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243216759] [2024-06-28 03:59:34,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:34,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:34,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:34,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:34,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:34,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 253 transitions, 3189 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:34,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:34,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:34,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:36,348 INFO L124 PetriNetUnfolderBase]: 2943/4357 cut-off events. [2024-06-28 03:59:36,348 INFO L125 PetriNetUnfolderBase]: For 127312/127333 co-relation queries the response was YES. [2024-06-28 03:59:36,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34143 conditions, 4357 events. 2943/4357 cut-off events. For 127312/127333 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21602 event pairs, 520 based on Foata normal form. 30/4382 useless extension candidates. Maximal degree in co-relation 34064. Up to 3927 conditions per place. [2024-06-28 03:59:36,389 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 241 selfloop transitions, 49 changer transitions 0/293 dead transitions. [2024-06-28 03:59:36,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 293 transitions, 4091 flow [2024-06-28 03:59:36,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:36,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 03:59:36,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-28 03:59:36,391 INFO L175 Difference]: Start difference. First operand has 159 places, 253 transitions, 3189 flow. Second operand 9 states and 148 transitions. [2024-06-28 03:59:36,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 293 transitions, 4091 flow [2024-06-28 03:59:36,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 293 transitions, 3939 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 03:59:36,528 INFO L231 Difference]: Finished difference. Result has 160 places, 255 transitions, 3213 flow [2024-06-28 03:59:36,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3213, PETRI_PLACES=160, PETRI_TRANSITIONS=255} [2024-06-28 03:59:36,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-28 03:59:36,529 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 255 transitions, 3213 flow [2024-06-28 03:59:36,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:36,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:36,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:36,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:59:36,529 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:36,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1946479690, now seen corresponding path program 4 times [2024-06-28 03:59:36,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:36,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86204877] [2024-06-28 03:59:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:38,945 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 03:59:38,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:38,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86204877] [2024-06-28 03:59:38,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86204877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:38,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:38,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:38,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046739276] [2024-06-28 03:59:38,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:38,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:38,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:38,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 255 transitions, 3213 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:38,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:38,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:38,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:41,294 INFO L124 PetriNetUnfolderBase]: 3585/5287 cut-off events. [2024-06-28 03:59:41,294 INFO L125 PetriNetUnfolderBase]: For 149973/149985 co-relation queries the response was YES. [2024-06-28 03:59:41,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42174 conditions, 5287 events. 3585/5287 cut-off events. For 149973/149985 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26851 event pairs, 523 based on Foata normal form. 21/5304 useless extension candidates. Maximal degree in co-relation 42095. Up to 4127 conditions per place. [2024-06-28 03:59:41,336 INFO L140 encePairwiseOnDemand]: 24/41 looper letters, 288 selfloop transitions, 153 changer transitions 0/444 dead transitions. [2024-06-28 03:59:41,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 444 transitions, 6214 flow [2024-06-28 03:59:41,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 03:59:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 03:59:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 262 transitions. [2024-06-28 03:59:41,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42601626016260163 [2024-06-28 03:59:41,337 INFO L175 Difference]: Start difference. First operand has 160 places, 255 transitions, 3213 flow. Second operand 15 states and 262 transitions. [2024-06-28 03:59:41,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 444 transitions, 6214 flow [2024-06-28 03:59:41,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 444 transitions, 6012 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:41,523 INFO L231 Difference]: Finished difference. Result has 177 places, 341 transitions, 4902 flow [2024-06-28 03:59:41,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3085, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4902, PETRI_PLACES=177, PETRI_TRANSITIONS=341} [2024-06-28 03:59:41,523 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-06-28 03:59:41,523 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 341 transitions, 4902 flow [2024-06-28 03:59:41,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:41,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:41,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:41,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:59:41,524 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:41,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash -875522058, now seen corresponding path program 5 times [2024-06-28 03:59:41,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:41,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597447438] [2024-06-28 03:59:41,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:41,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:44,026 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 03:59:44,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:44,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597447438] [2024-06-28 03:59:44,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597447438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:44,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:44,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667178697] [2024-06-28 03:59:44,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:44,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:44,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:44,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:44,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 341 transitions, 4902 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:44,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:44,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:44,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:46,342 INFO L124 PetriNetUnfolderBase]: 4394/6437 cut-off events. [2024-06-28 03:59:46,342 INFO L125 PetriNetUnfolderBase]: For 190045/190069 co-relation queries the response was YES. [2024-06-28 03:59:46,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55562 conditions, 6437 events. 4394/6437 cut-off events. For 190045/190069 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 33428 event pairs, 611 based on Foata normal form. 26/6456 useless extension candidates. Maximal degree in co-relation 55473. Up to 5611 conditions per place. [2024-06-28 03:59:46,409 INFO L140 encePairwiseOnDemand]: 25/41 looper letters, 403 selfloop transitions, 139 changer transitions 0/545 dead transitions. [2024-06-28 03:59:46,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 545 transitions, 8723 flow [2024-06-28 03:59:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:59:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:59:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-28 03:59:46,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40150093808630394 [2024-06-28 03:59:46,412 INFO L175 Difference]: Start difference. First operand has 177 places, 341 transitions, 4902 flow. Second operand 13 states and 214 transitions. [2024-06-28 03:59:46,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 545 transitions, 8723 flow [2024-06-28 03:59:46,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 545 transitions, 8528 flow, removed 94 selfloop flow, removed 2 redundant places. [2024-06-28 03:59:46,802 INFO L231 Difference]: Finished difference. Result has 196 places, 453 transitions, 7242 flow [2024-06-28 03:59:46,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4752, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7242, PETRI_PLACES=196, PETRI_TRANSITIONS=453} [2024-06-28 03:59:46,803 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-28 03:59:46,803 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 453 transitions, 7242 flow [2024-06-28 03:59:46,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:46,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:46,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:46,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:59:46,804 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:46,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash -267854870, now seen corresponding path program 4 times [2024-06-28 03:59:46,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:46,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482745791] [2024-06-28 03:59:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:46,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:49,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:49,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482745791] [2024-06-28 03:59:49,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482745791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:49,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:49,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:49,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380781172] [2024-06-28 03:59:49,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:49,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:49,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:49,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:49,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:49,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:49,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 453 transitions, 7242 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:49,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:49,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:49,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:51,428 INFO L124 PetriNetUnfolderBase]: 4498/6592 cut-off events. [2024-06-28 03:59:51,429 INFO L125 PetriNetUnfolderBase]: For 208783/208804 co-relation queries the response was YES. [2024-06-28 03:59:51,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59617 conditions, 6592 events. 4498/6592 cut-off events. For 208783/208804 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 34401 event pairs, 616 based on Foata normal form. 18/6602 useless extension candidates. Maximal degree in co-relation 59518. Up to 5723 conditions per place. [2024-06-28 03:59:51,502 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 366 selfloop transitions, 146 changer transitions 0/515 dead transitions. [2024-06-28 03:59:51,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 515 transitions, 8828 flow [2024-06-28 03:59:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 03:59:51,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-28 03:59:51,503 INFO L175 Difference]: Start difference. First operand has 196 places, 453 transitions, 7242 flow. Second operand 9 states and 151 transitions. [2024-06-28 03:59:51,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 515 transitions, 8828 flow [2024-06-28 03:59:51,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 515 transitions, 8688 flow, removed 69 selfloop flow, removed 1 redundant places. [2024-06-28 03:59:52,002 INFO L231 Difference]: Finished difference. Result has 205 places, 472 transitions, 7870 flow [2024-06-28 03:59:52,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7870, PETRI_PLACES=205, PETRI_TRANSITIONS=472} [2024-06-28 03:59:52,004 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-28 03:59:52,004 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 472 transitions, 7870 flow [2024-06-28 03:59:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:52,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:52,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:52,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:59:52,005 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:52,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash -705869364, now seen corresponding path program 6 times [2024-06-28 03:59:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:52,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601682895] [2024-06-28 03:59:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:54,326 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 03:59:54,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:54,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601682895] [2024-06-28 03:59:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601682895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:54,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:54,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:54,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928080261] [2024-06-28 03:59:54,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:54,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:54,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:54,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:54,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 03:59:54,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 472 transitions, 7870 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:54,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:54,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 03:59:54,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:56,819 INFO L124 PetriNetUnfolderBase]: 4816/7047 cut-off events. [2024-06-28 03:59:56,820 INFO L125 PetriNetUnfolderBase]: For 243645/243666 co-relation queries the response was YES. [2024-06-28 03:59:56,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66135 conditions, 7047 events. 4816/7047 cut-off events. For 243645/243666 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 37032 event pairs, 520 based on Foata normal form. 24/7063 useless extension candidates. Maximal degree in co-relation 66032. Up to 4221 conditions per place. [2024-06-28 03:59:56,900 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 302 selfloop transitions, 334 changer transitions 0/639 dead transitions. [2024-06-28 03:59:56,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 639 transitions, 11719 flow [2024-06-28 03:59:56,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:59:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:59:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 03:59:56,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43680709534368073 [2024-06-28 03:59:56,902 INFO L175 Difference]: Start difference. First operand has 205 places, 472 transitions, 7870 flow. Second operand 11 states and 197 transitions. [2024-06-28 03:59:56,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 639 transitions, 11719 flow [2024-06-28 03:59:57,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 639 transitions, 11641 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:57,470 INFO L231 Difference]: Finished difference. Result has 213 places, 572 transitions, 10773 flow [2024-06-28 03:59:57,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7792, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10773, PETRI_PLACES=213, PETRI_TRANSITIONS=572} [2024-06-28 03:59:57,470 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-28 03:59:57,470 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 572 transitions, 10773 flow [2024-06-28 03:59:57,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:57,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:57,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:57,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:59:57,471 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:57,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:57,471 INFO L85 PathProgramCache]: Analyzing trace with hash -705691734, now seen corresponding path program 7 times [2024-06-28 03:59:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:57,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420470315] [2024-06-28 03:59:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:57,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:00,068 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 04:00:00,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:00,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420470315] [2024-06-28 04:00:00,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420470315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:00,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:00,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:00,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292540907] [2024-06-28 04:00:00,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:00,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:00,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:00,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:00,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:00,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:00:00,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 572 transitions, 10773 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:00,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:00,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:00:00,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:02,609 INFO L124 PetriNetUnfolderBase]: 4870/7125 cut-off events. [2024-06-28 04:00:02,609 INFO L125 PetriNetUnfolderBase]: For 278990/279011 co-relation queries the response was YES. [2024-06-28 04:00:02,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72776 conditions, 7125 events. 4870/7125 cut-off events. For 278990/279011 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 37496 event pairs, 650 based on Foata normal form. 22/7139 useless extension candidates. Maximal degree in co-relation 72668. Up to 6513 conditions per place. [2024-06-28 04:00:02,718 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 506 selfloop transitions, 104 changer transitions 0/613 dead transitions. [2024-06-28 04:00:02,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 613 transitions, 12348 flow [2024-06-28 04:00:02,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:00:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:00:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 04:00:02,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3829268292682927 [2024-06-28 04:00:02,720 INFO L175 Difference]: Start difference. First operand has 213 places, 572 transitions, 10773 flow. Second operand 10 states and 157 transitions. [2024-06-28 04:00:02,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 613 transitions, 12348 flow [2024-06-28 04:00:03,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 613 transitions, 12087 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:03,617 INFO L231 Difference]: Finished difference. Result has 218 places, 577 transitions, 10859 flow [2024-06-28 04:00:03,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10512, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10859, PETRI_PLACES=218, PETRI_TRANSITIONS=577} [2024-06-28 04:00:03,618 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 176 predicate places. [2024-06-28 04:00:03,618 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 577 transitions, 10859 flow [2024-06-28 04:00:03,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:03,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:03,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:03,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:00:03,619 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:03,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1843151216, now seen corresponding path program 8 times [2024-06-28 04:00:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:03,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371284331] [2024-06-28 04:00:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:03,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:06,269 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 04:00:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371284331] [2024-06-28 04:00:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371284331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:06,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:06,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:06,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293384376] [2024-06-28 04:00:06,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:06,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:06,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:06,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:06,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:06,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:00:06,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 577 transitions, 10859 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:06,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:06,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:00:06,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:09,124 INFO L124 PetriNetUnfolderBase]: 5293/7742 cut-off events. [2024-06-28 04:00:09,124 INFO L125 PetriNetUnfolderBase]: For 316951/316972 co-relation queries the response was YES. [2024-06-28 04:00:09,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80182 conditions, 7742 events. 5293/7742 cut-off events. For 316951/316972 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 41356 event pairs, 636 based on Foata normal form. 22/7756 useless extension candidates. Maximal degree in co-relation 80072. Up to 6346 conditions per place. [2024-06-28 04:00:09,215 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 447 selfloop transitions, 259 changer transitions 0/709 dead transitions. [2024-06-28 04:00:09,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 709 transitions, 14075 flow [2024-06-28 04:00:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:00:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:00:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 04:00:09,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44124168514412415 [2024-06-28 04:00:09,217 INFO L175 Difference]: Start difference. First operand has 218 places, 577 transitions, 10859 flow. Second operand 11 states and 199 transitions. [2024-06-28 04:00:09,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 709 transitions, 14075 flow [2024-06-28 04:00:10,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 709 transitions, 13859 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:10,110 INFO L231 Difference]: Finished difference. Result has 227 places, 639 transitions, 12759 flow [2024-06-28 04:00:10,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10649, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12759, PETRI_PLACES=227, PETRI_TRANSITIONS=639} [2024-06-28 04:00:10,111 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-06-28 04:00:10,111 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 639 transitions, 12759 flow [2024-06-28 04:00:10,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:10,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:10,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:10,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:00:10,112 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:10,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash -703207880, now seen corresponding path program 2 times [2024-06-28 04:00:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751204326] [2024-06-28 04:00:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:13,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:13,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:13,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751204326] [2024-06-28 04:00:13,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751204326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:13,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:13,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:13,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888162637] [2024-06-28 04:00:13,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:13,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:13,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:00:13,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 639 transitions, 12759 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:13,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:13,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:00:13,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:16,141 INFO L124 PetriNetUnfolderBase]: 5445/7978 cut-off events. [2024-06-28 04:00:16,141 INFO L125 PetriNetUnfolderBase]: For 367476/367497 co-relation queries the response was YES. [2024-06-28 04:00:16,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85805 conditions, 7978 events. 5445/7978 cut-off events. For 367476/367497 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 43054 event pairs, 624 based on Foata normal form. 30/8000 useless extension candidates. Maximal degree in co-relation 85690. Up to 6592 conditions per place. [2024-06-28 04:00:16,230 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 521 selfloop transitions, 171 changer transitions 0/695 dead transitions. [2024-06-28 04:00:16,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 695 transitions, 14945 flow [2024-06-28 04:00:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:00:16,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 04:00:16,232 INFO L175 Difference]: Start difference. First operand has 227 places, 639 transitions, 12759 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:00:16,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 695 transitions, 14945 flow [2024-06-28 04:00:17,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 695 transitions, 14730 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:17,268 INFO L231 Difference]: Finished difference. Result has 231 places, 643 transitions, 13065 flow [2024-06-28 04:00:17,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12544, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13065, PETRI_PLACES=231, PETRI_TRANSITIONS=643} [2024-06-28 04:00:17,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 189 predicate places. [2024-06-28 04:00:17,269 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 643 transitions, 13065 flow [2024-06-28 04:00:17,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:17,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:17,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:17,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:00:17,270 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:17,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1606796180, now seen corresponding path program 2 times [2024-06-28 04:00:17,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:17,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515118116] [2024-06-28 04:00:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:17,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:19,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515118116] [2024-06-28 04:00:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515118116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:19,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:19,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037718914] [2024-06-28 04:00:19,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:19,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:19,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:00:19,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 643 transitions, 13065 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:19,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:19,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:00:19,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:22,328 INFO L124 PetriNetUnfolderBase]: 5468/8011 cut-off events. [2024-06-28 04:00:22,328 INFO L125 PetriNetUnfolderBase]: For 381944/381965 co-relation queries the response was YES. [2024-06-28 04:00:22,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87256 conditions, 8011 events. 5468/8011 cut-off events. For 381944/381965 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 43324 event pairs, 711 based on Foata normal form. 20/8023 useless extension candidates. Maximal degree in co-relation 87139. Up to 7083 conditions per place. [2024-06-28 04:00:22,434 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 510 selfloop transitions, 179 changer transitions 0/692 dead transitions. [2024-06-28 04:00:22,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 692 transitions, 15051 flow [2024-06-28 04:00:22,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:00:22,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 04:00:22,436 INFO L175 Difference]: Start difference. First operand has 231 places, 643 transitions, 13065 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:00:22,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 692 transitions, 15051 flow [2024-06-28 04:00:23,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 692 transitions, 14789 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:23,695 INFO L231 Difference]: Finished difference. Result has 235 places, 650 transitions, 13382 flow [2024-06-28 04:00:23,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12803, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13382, PETRI_PLACES=235, PETRI_TRANSITIONS=650} [2024-06-28 04:00:23,696 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2024-06-28 04:00:23,696 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 650 transitions, 13382 flow [2024-06-28 04:00:23,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:23,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:23,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:23,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:00:23,697 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:23,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:23,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1606795932, now seen corresponding path program 3 times [2024-06-28 04:00:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:23,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113414538] [2024-06-28 04:00:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:23,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:27,298 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 04:00:27,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:27,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113414538] [2024-06-28 04:00:27,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113414538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:27,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:27,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:27,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226602396] [2024-06-28 04:00:27,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:27,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:27,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:27,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:27,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:00:27,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 650 transitions, 13382 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:27,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:27,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:00:27,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:30,468 INFO L124 PetriNetUnfolderBase]: 5520/8095 cut-off events. [2024-06-28 04:00:30,468 INFO L125 PetriNetUnfolderBase]: For 404290/404311 co-relation queries the response was YES. [2024-06-28 04:00:30,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89313 conditions, 8095 events. 5520/8095 cut-off events. For 404290/404311 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 43962 event pairs, 724 based on Foata normal form. 30/8117 useless extension candidates. Maximal degree in co-relation 89194. Up to 7144 conditions per place. [2024-06-28 04:00:30,567 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 526 selfloop transitions, 168 changer transitions 0/697 dead transitions. [2024-06-28 04:00:30,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 697 transitions, 15268 flow [2024-06-28 04:00:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:30,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:00:30,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 04:00:30,569 INFO L175 Difference]: Start difference. First operand has 235 places, 650 transitions, 13382 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:00:30,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 697 transitions, 15268 flow [2024-06-28 04:00:31,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 697 transitions, 14946 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:31,639 INFO L231 Difference]: Finished difference. Result has 239 places, 651 transitions, 13436 flow [2024-06-28 04:00:31,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13060, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13436, PETRI_PLACES=239, PETRI_TRANSITIONS=651} [2024-06-28 04:00:31,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-28 04:00:31,640 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 651 transitions, 13436 flow [2024-06-28 04:00:31,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:31,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:31,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:31,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:00:31,641 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:31,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1615077086, now seen corresponding path program 9 times [2024-06-28 04:00:31,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:31,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755775829] [2024-06-28 04:00:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:31,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:34,005 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 04:00:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755775829] [2024-06-28 04:00:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755775829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:34,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:34,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513896310] [2024-06-28 04:00:34,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:34,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:34,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:34,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:34,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:00:34,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 651 transitions, 13436 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:34,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:34,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:00:34,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:37,196 INFO L124 PetriNetUnfolderBase]: 5618/8234 cut-off events. [2024-06-28 04:00:37,196 INFO L125 PetriNetUnfolderBase]: For 422363/422384 co-relation queries the response was YES. [2024-06-28 04:00:37,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91152 conditions, 8234 events. 5618/8234 cut-off events. For 422363/422384 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 44829 event pairs, 686 based on Foata normal form. 22/8248 useless extension candidates. Maximal degree in co-relation 91032. Up to 7299 conditions per place. [2024-06-28 04:00:37,294 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 549 selfloop transitions, 210 changer transitions 0/762 dead transitions. [2024-06-28 04:00:37,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 762 transitions, 16989 flow [2024-06-28 04:00:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:00:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:00:37,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 202 transitions. [2024-06-28 04:00:37,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3789868667917448 [2024-06-28 04:00:37,296 INFO L175 Difference]: Start difference. First operand has 239 places, 651 transitions, 13436 flow. Second operand 13 states and 202 transitions. [2024-06-28 04:00:37,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 762 transitions, 16989 flow [2024-06-28 04:00:38,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 762 transitions, 16528 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:38,449 INFO L231 Difference]: Finished difference. Result has 250 places, 711 transitions, 15051 flow [2024-06-28 04:00:38,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13062, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15051, PETRI_PLACES=250, PETRI_TRANSITIONS=711} [2024-06-28 04:00:38,451 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-06-28 04:00:38,451 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 711 transitions, 15051 flow [2024-06-28 04:00:38,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:38,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:38,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:38,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:00:38,452 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:38,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:38,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1948685294, now seen corresponding path program 10 times [2024-06-28 04:00:38,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:38,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615549163] [2024-06-28 04:00:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:38,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:40,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:40,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615549163] [2024-06-28 04:00:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615549163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:40,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:40,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755495854] [2024-06-28 04:00:40,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:40,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:40,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:00:40,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 711 transitions, 15051 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:40,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:40,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:00:40,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:44,184 INFO L124 PetriNetUnfolderBase]: 5650/8280 cut-off events. [2024-06-28 04:00:44,184 INFO L125 PetriNetUnfolderBase]: For 434229/434250 co-relation queries the response was YES. [2024-06-28 04:00:44,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92960 conditions, 8280 events. 5650/8280 cut-off events. For 434229/434250 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 45056 event pairs, 646 based on Foata normal form. 24/8296 useless extension candidates. Maximal degree in co-relation 92835. Up to 5399 conditions per place. [2024-06-28 04:00:44,279 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 369 selfloop transitions, 410 changer transitions 0/782 dead transitions. [2024-06-28 04:00:44,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 782 transitions, 17535 flow [2024-06-28 04:00:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:00:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:00:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 04:00:44,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43015521064301554 [2024-06-28 04:00:44,281 INFO L175 Difference]: Start difference. First operand has 250 places, 711 transitions, 15051 flow. Second operand 11 states and 194 transitions. [2024-06-28 04:00:44,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 782 transitions, 17535 flow [2024-06-28 04:00:45,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 782 transitions, 17348 flow, removed 80 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:45,590 INFO L231 Difference]: Finished difference. Result has 259 places, 719 transitions, 16088 flow [2024-06-28 04:00:45,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14864, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16088, PETRI_PLACES=259, PETRI_TRANSITIONS=719} [2024-06-28 04:00:45,591 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2024-06-28 04:00:45,591 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 719 transitions, 16088 flow [2024-06-28 04:00:45,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:45,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:45,591 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 04:00:45,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:00:45,591 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:45,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1704668527, now seen corresponding path program 1 times [2024-06-28 04:00:45,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:45,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291451680] [2024-06-28 04:00:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:50,524 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 04:00:50,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:50,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291451680] [2024-06-28 04:00:50,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291451680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:50,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:50,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:00:50,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390829620] [2024-06-28 04:00:50,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:50,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:00:50,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:50,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:00:50,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:00:50,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:00:50,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 719 transitions, 16088 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:00:50,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:50,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:00:50,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:54,432 INFO L124 PetriNetUnfolderBase]: 6780/10082 cut-off events. [2024-06-28 04:00:54,432 INFO L125 PetriNetUnfolderBase]: For 628361/628528 co-relation queries the response was YES. [2024-06-28 04:00:54,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115042 conditions, 10082 events. 6780/10082 cut-off events. For 628361/628528 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 57853 event pairs, 999 based on Foata normal form. 149/10217 useless extension candidates. Maximal degree in co-relation 114915. Up to 5871 conditions per place. [2024-06-28 04:00:54,573 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 640 selfloop transitions, 179 changer transitions 0/822 dead transitions. [2024-06-28 04:00:54,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 822 transitions, 19243 flow [2024-06-28 04:00:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:00:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:00:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 04:00:54,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975609756097561 [2024-06-28 04:00:54,575 INFO L175 Difference]: Start difference. First operand has 259 places, 719 transitions, 16088 flow. Second operand 10 states and 204 transitions. [2024-06-28 04:00:54,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 822 transitions, 19243 flow [2024-06-28 04:00:56,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 822 transitions, 18358 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-28 04:00:56,460 INFO L231 Difference]: Finished difference. Result has 263 places, 726 transitions, 15861 flow [2024-06-28 04:00:56,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15229, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15861, PETRI_PLACES=263, PETRI_TRANSITIONS=726} [2024-06-28 04:00:56,461 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 221 predicate places. [2024-06-28 04:00:56,461 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 726 transitions, 15861 flow [2024-06-28 04:00:56,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:00:56,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:56,462 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 04:00:56,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:00:56,462 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:56,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1706542477, now seen corresponding path program 2 times [2024-06-28 04:00:56,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:56,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940363572] [2024-06-28 04:00:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:56,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:59,412 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 04:00:59,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:59,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940363572] [2024-06-28 04:00:59,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940363572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:59,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:59,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:00:59,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928426429] [2024-06-28 04:00:59,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:59,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:00:59,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:00:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:00:59,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:00:59,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 726 transitions, 15861 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:00:59,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:59,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:00:59,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:03,687 INFO L124 PetriNetUnfolderBase]: 7493/11229 cut-off events. [2024-06-28 04:01:03,687 INFO L125 PetriNetUnfolderBase]: For 711981/712148 co-relation queries the response was YES. [2024-06-28 04:01:03,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125902 conditions, 11229 events. 7493/11229 cut-off events. For 711981/712148 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 66539 event pairs, 1489 based on Foata normal form. 141/11356 useless extension candidates. Maximal degree in co-relation 125772. Up to 7431 conditions per place. [2024-06-28 04:01:03,857 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 431 selfloop transitions, 386 changer transitions 0/820 dead transitions. [2024-06-28 04:01:03,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 820 transitions, 19063 flow [2024-06-28 04:01:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:03,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 04:01:03,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 04:01:03,859 INFO L175 Difference]: Start difference. First operand has 263 places, 726 transitions, 15861 flow. Second operand 10 states and 200 transitions. [2024-06-28 04:01:03,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 820 transitions, 19063 flow [2024-06-28 04:01:06,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 820 transitions, 18737 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:06,145 INFO L231 Difference]: Finished difference. Result has 272 places, 738 transitions, 17082 flow [2024-06-28 04:01:06,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15535, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17082, PETRI_PLACES=272, PETRI_TRANSITIONS=738} [2024-06-28 04:01:06,146 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-28 04:01:06,146 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 738 transitions, 17082 flow [2024-06-28 04:01:06,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:06,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:06,146 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 04:01:06,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:01:06,147 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:06,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1789663087, now seen corresponding path program 3 times [2024-06-28 04:01:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:06,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684021392] [2024-06-28 04:01:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:06,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:09,253 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 04:01:09,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:09,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684021392] [2024-06-28 04:01:09,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684021392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:09,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:09,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:09,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448934865] [2024-06-28 04:01:09,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:09,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:09,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:09,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:09,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:09,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:01:09,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 738 transitions, 17082 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:09,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:09,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:01:09,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:14,148 INFO L124 PetriNetUnfolderBase]: 7643/11491 cut-off events. [2024-06-28 04:01:14,148 INFO L125 PetriNetUnfolderBase]: For 767497/767667 co-relation queries the response was YES. [2024-06-28 04:01:14,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132003 conditions, 11491 events. 7643/11491 cut-off events. For 767497/767667 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 68587 event pairs, 1728 based on Foata normal form. 153/11630 useless extension candidates. Maximal degree in co-relation 131867. Up to 8383 conditions per place. [2024-06-28 04:01:14,296 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 421 selfloop transitions, 390 changer transitions 0/814 dead transitions. [2024-06-28 04:01:14,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 814 transitions, 19760 flow [2024-06-28 04:01:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 04:01:14,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 04:01:14,298 INFO L175 Difference]: Start difference. First operand has 272 places, 738 transitions, 17082 flow. Second operand 10 states and 195 transitions. [2024-06-28 04:01:14,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 814 transitions, 19760 flow [2024-06-28 04:01:16,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 814 transitions, 19227 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:16,419 INFO L231 Difference]: Finished difference. Result has 280 places, 742 transitions, 17531 flow [2024-06-28 04:01:16,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=16565, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17531, PETRI_PLACES=280, PETRI_TRANSITIONS=742} [2024-06-28 04:01:16,420 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 04:01:16,420 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 742 transitions, 17531 flow [2024-06-28 04:01:16,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:16,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:16,420 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 04:01:16,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:01:16,421 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:16,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:16,421 INFO L85 PathProgramCache]: Analyzing trace with hash 313973287, now seen corresponding path program 4 times [2024-06-28 04:01:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:16,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962522039] [2024-06-28 04:01:16,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:20,574 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 04:01:20,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:20,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962522039] [2024-06-28 04:01:20,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962522039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:20,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:20,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:20,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956213166] [2024-06-28 04:01:20,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:20,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:20,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:20,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:20,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:20,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:01:20,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 742 transitions, 17531 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:20,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:20,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:01:20,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:25,012 INFO L124 PetriNetUnfolderBase]: 7919/11959 cut-off events. [2024-06-28 04:01:25,012 INFO L125 PetriNetUnfolderBase]: For 838833/838857 co-relation queries the response was YES. [2024-06-28 04:01:25,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137374 conditions, 11959 events. 7919/11959 cut-off events. For 838833/838857 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 72468 event pairs, 1908 based on Foata normal form. 80/12031 useless extension candidates. Maximal degree in co-relation 137235. Up to 11193 conditions per place. [2024-06-28 04:01:25,195 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 750 selfloop transitions, 48 changer transitions 0/801 dead transitions. [2024-06-28 04:01:25,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 801 transitions, 19793 flow [2024-06-28 04:01:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 04:01:25,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219512195121951 [2024-06-28 04:01:25,196 INFO L175 Difference]: Start difference. First operand has 280 places, 742 transitions, 17531 flow. Second operand 10 states and 173 transitions. [2024-06-28 04:01:25,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 801 transitions, 19793 flow [2024-06-28 04:01:27,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 801 transitions, 18920 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:27,294 INFO L231 Difference]: Finished difference. Result has 283 places, 743 transitions, 16832 flow [2024-06-28 04:01:27,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=16658, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16832, PETRI_PLACES=283, PETRI_TRANSITIONS=743} [2024-06-28 04:01:27,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-28 04:01:27,295 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 743 transitions, 16832 flow [2024-06-28 04:01:27,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:27,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:27,295 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 04:01:27,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:01:27,296 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:27,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:27,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1793388109, now seen corresponding path program 1 times [2024-06-28 04:01:27,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:27,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059038288] [2024-06-28 04:01:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:27,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:32,004 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 04:01:32,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:32,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059038288] [2024-06-28 04:01:32,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059038288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:32,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:32,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:32,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142928727] [2024-06-28 04:01:32,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:32,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:32,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:32,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:32,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:32,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:01:32,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 743 transitions, 16832 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:32,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:32,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:01:32,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:36,557 INFO L124 PetriNetUnfolderBase]: 7999/12087 cut-off events. [2024-06-28 04:01:36,557 INFO L125 PetriNetUnfolderBase]: For 814151/814175 co-relation queries the response was YES. [2024-06-28 04:01:36,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136682 conditions, 12087 events. 7999/12087 cut-off events. For 814151/814175 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 73416 event pairs, 1943 based on Foata normal form. 32/12111 useless extension candidates. Maximal degree in co-relation 136542. Up to 11773 conditions per place. [2024-06-28 04:01:36,724 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 746 selfloop transitions, 45 changer transitions 0/794 dead transitions. [2024-06-28 04:01:36,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 794 transitions, 19040 flow [2024-06-28 04:01:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 04:01:36,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 04:01:36,726 INFO L175 Difference]: Start difference. First operand has 283 places, 743 transitions, 16832 flow. Second operand 9 states and 155 transitions. [2024-06-28 04:01:36,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 794 transitions, 19040 flow [2024-06-28 04:01:39,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 794 transitions, 18925 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:39,082 INFO L231 Difference]: Finished difference. Result has 286 places, 745 transitions, 16909 flow [2024-06-28 04:01:39,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=16717, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16909, PETRI_PLACES=286, PETRI_TRANSITIONS=745} [2024-06-28 04:01:39,083 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-06-28 04:01:39,084 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 745 transitions, 16909 flow [2024-06-28 04:01:39,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:39,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:39,084 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 04:01:39,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:01:39,084 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:39,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:39,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1793238007, now seen corresponding path program 5 times [2024-06-28 04:01:39,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:39,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070603778] [2024-06-28 04:01:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:39,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:42,617 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 04:01:42,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:42,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070603778] [2024-06-28 04:01:42,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070603778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:42,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:42,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:42,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459260111] [2024-06-28 04:01:42,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:42,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:42,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:42,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:42,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:42,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:01:42,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 745 transitions, 16909 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:42,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:42,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:01:42,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:47,796 INFO L124 PetriNetUnfolderBase]: 8275/12555 cut-off events. [2024-06-28 04:01:47,796 INFO L125 PetriNetUnfolderBase]: For 894936/894960 co-relation queries the response was YES. [2024-06-28 04:01:47,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140843 conditions, 12555 events. 8275/12555 cut-off events. For 894936/894960 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 77212 event pairs, 2026 based on Foata normal form. 80/12627 useless extension candidates. Maximal degree in co-relation 140701. Up to 11679 conditions per place. [2024-06-28 04:01:47,965 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 748 selfloop transitions, 54 changer transitions 0/805 dead transitions. [2024-06-28 04:01:47,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 805 transitions, 19279 flow [2024-06-28 04:01:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 04:01:47,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 04:01:47,967 INFO L175 Difference]: Start difference. First operand has 286 places, 745 transitions, 16909 flow. Second operand 10 states and 175 transitions. [2024-06-28 04:01:47,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 805 transitions, 19279 flow [2024-06-28 04:01:50,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 805 transitions, 19127 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:50,242 INFO L231 Difference]: Finished difference. Result has 289 places, 746 transitions, 16947 flow [2024-06-28 04:01:50,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=16757, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16947, PETRI_PLACES=289, PETRI_TRANSITIONS=746} [2024-06-28 04:01:50,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-28 04:01:50,243 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 746 transitions, 16947 flow [2024-06-28 04:01:50,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:50,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:50,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:50,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:01:50,244 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:50,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1793234287, now seen corresponding path program 6 times [2024-06-28 04:01:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:50,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366915408] [2024-06-28 04:01:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:54,329 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 04:01:54,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366915408] [2024-06-28 04:01:54,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366915408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:54,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:54,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:54,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389804451] [2024-06-28 04:01:54,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:54,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:54,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:54,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:54,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:54,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 04:01:54,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 746 transitions, 16947 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 04:01:54,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:54,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 04:01:54,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand