./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.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/mix051_tso.oepc.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/mix051_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix051_tso.oepc.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 03:34:16,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:34:17,051 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:34:17,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:34:17,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:34:17,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:34:17,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:34:17,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:34:17,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:34:17,084 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:34:17,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:34:17,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:34:17,085 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:34:17,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:34:17,086 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:34:17,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:34:17,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:34:17,087 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:34:17,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:34:17,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:34:17,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:34:17,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:34:17,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:34:17,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:34:17,089 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:34:17,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:34:17,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:34:17,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:34:17,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:34:17,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:34:17,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:34:17,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:34:17,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:34:17,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:34:17,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:34:17,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:34:17,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:34:17,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:34:17,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:34:17,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:34:17,093 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:34:17,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:34:17,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:34:17,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:34:17,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:34:17,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:34:17,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:34:17,352 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:34:17,353 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:34:17,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix051_tso.oepc.yml/witness.yml [2024-06-28 03:34:17,585 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:34:17,586 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:34:17,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i [2024-06-28 03:34:18,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:34:18,760 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:34:18,761 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix051_tso.oepc.i [2024-06-28 03:34:18,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/095131809/aa98dcc82390445281eeb4ac08480cca/FLAG6eb383f6f [2024-06-28 03:34:18,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/095131809/aa98dcc82390445281eeb4ac08480cca [2024-06-28 03:34:18,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:34:18,783 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:34:18,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:34:18,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:34:18,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:34:18,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:34:17" (1/2) ... [2024-06-28 03:34:18,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdb57d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:34:18, skipping insertion in model container [2024-06-28 03:34:18,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:34:17" (1/2) ... [2024-06-28 03:34:18,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1075baa8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:34:18, skipping insertion in model container [2024-06-28 03:34:18,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:34:18" (2/2) ... [2024-06-28 03:34:18,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdb57d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:18, skipping insertion in model container [2024-06-28 03:34:18,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:34:18" (2/2) ... [2024-06-28 03:34:18,792 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:34:18,890 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:34:18,891 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || x$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:34:18,891 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || x$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:34:18,891 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((! multithreaded || x$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:34:18,892 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((! multithreaded || x$r_buff0_thd4 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-28 03:34:18,892 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:34:18,892 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-28 03:34:18,928 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:34:19,263 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:34:19,274 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:34:19,397 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:34:19,445 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:34:19,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19 WrapperNode [2024-06-28 03:34:19,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:34:19,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:34:19,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:34:19,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:34:19,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,464 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,494 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2024-06-28 03:34:19,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:34:19,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:34:19,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:34:19,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:34:19,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,520 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:34:19,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:34:19,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:34:19,540 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:34:19,540 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:34:19,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (1/1) ... [2024-06-28 03:34:19,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:34:19,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:34:19,588 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 03:34:19,598 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 03:34:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:34:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:34:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:34:19,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:34:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:34:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:34:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:34:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:34:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:34:19,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:34:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:34:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:34:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:34:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:34:19,624 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 03:34:19,744 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:34:19,745 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:34:20,167 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:34:20,168 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:34:20,290 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:34:20,290 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:34:20,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:34:20 BoogieIcfgContainer [2024-06-28 03:34:20,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:34:20,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:34:20,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:34:20,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:34:20,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:34:17" (1/4) ... [2024-06-28 03:34:20,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ea0e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:34:20, skipping insertion in model container [2024-06-28 03:34:20,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:34:18" (2/4) ... [2024-06-28 03:34:20,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ea0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:34:20, skipping insertion in model container [2024-06-28 03:34:20,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:34:19" (3/4) ... [2024-06-28 03:34:20,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ea0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:34:20, skipping insertion in model container [2024-06-28 03:34:20,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:34:20" (4/4) ... [2024-06-28 03:34:20,296 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_tso.oepc.i [2024-06-28 03:34:20,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:34:20,309 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:34:20,309 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:34:20,349 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:34:20,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:34:20,394 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-28 03:34:20,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:34:20,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:34:20,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:34:20,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-28 03:34:20,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:34:20,436 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;@5aff0b73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:34:20,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:34:20,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:34:20,438 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:34:20,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:34:20,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:20,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:34:20,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:20,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash 400202035, now seen corresponding path program 1 times [2024-06-28 03:34:20,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:20,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565462083] [2024-06-28 03:34:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:20,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:21,502 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 03:34:21,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:21,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565462083] [2024-06-28 03:34:21,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565462083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:21,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:21,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:34:21,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843297981] [2024-06-28 03:34:21,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:21,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:34:21,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:21,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:34:21,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:34:21,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:34:21,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 03:34:21,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:21,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:34:21,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:22,831 INFO L124 PetriNetUnfolderBase]: 8192/11588 cut-off events. [2024-06-28 03:34:22,831 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-28 03:34:22,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23151 conditions, 11588 events. 8192/11588 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 63990 event pairs, 6310 based on Foata normal form. 1/11373 useless extension candidates. Maximal degree in co-relation 23138. Up to 11172 conditions per place. [2024-06-28 03:34:22,895 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 42 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-28 03:34:22,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 225 flow [2024-06-28 03:34:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:34:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:34:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-28 03:34:22,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-06-28 03:34:22,906 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 93 transitions. [2024-06-28 03:34:22,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 225 flow [2024-06-28 03:34:22,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:34:22,914 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-28 03:34:22,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 03:34:22,918 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-28 03:34:22,919 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-28 03:34:22,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 03:34:22,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:22,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:22,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:34:22,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:22,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:22,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1952851310, now seen corresponding path program 1 times [2024-06-28 03:34:22,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:22,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295223108] [2024-06-28 03:34:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:22,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:23,542 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 03:34:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295223108] [2024-06-28 03:34:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295223108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:23,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:23,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:34:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925409004] [2024-06-28 03:34:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:23,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:34:23,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:34:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:34:23,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:23,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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 03:34:23,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:23,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:23,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:24,761 INFO L124 PetriNetUnfolderBase]: 9577/13187 cut-off events. [2024-06-28 03:34:24,761 INFO L125 PetriNetUnfolderBase]: For 2471/2471 co-relation queries the response was YES. [2024-06-28 03:34:24,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30036 conditions, 13187 events. 9577/13187 cut-off events. For 2471/2471 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70148 event pairs, 6775 based on Foata normal form. 4/13158 useless extension candidates. Maximal degree in co-relation 30024. Up to 12982 conditions per place. [2024-06-28 03:34:24,823 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 53 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-28 03:34:24,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 319 flow [2024-06-28 03:34:24,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:34:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:34:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-28 03:34:24,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2024-06-28 03:34:24,827 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 118 transitions. [2024-06-28 03:34:24,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 319 flow [2024-06-28 03:34:24,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:34:24,831 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-28 03:34:24,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-28 03:34:24,832 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-28 03:34:24,833 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-28 03:34:24,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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 03:34:24,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:24,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:24,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:34:24,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:24,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:24,842 INFO L85 PathProgramCache]: Analyzing trace with hash -408846852, now seen corresponding path program 1 times [2024-06-28 03:34:24,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:24,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021108282] [2024-06-28 03:34:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:25,528 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 03:34:25,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:25,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021108282] [2024-06-28 03:34:25,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021108282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:25,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:25,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:34:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700698015] [2024-06-28 03:34:25,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:25,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:34:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:34:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:34:25,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:25,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:25,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:25,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:25,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:26,796 INFO L124 PetriNetUnfolderBase]: 9557/13165 cut-off events. [2024-06-28 03:34:26,796 INFO L125 PetriNetUnfolderBase]: For 7067/7067 co-relation queries the response was YES. [2024-06-28 03:34:26,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33389 conditions, 13165 events. 9557/13165 cut-off events. For 7067/7067 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70104 event pairs, 5407 based on Foata normal form. 8/13140 useless extension candidates. Maximal degree in co-relation 33375. Up to 12912 conditions per place. [2024-06-28 03:34:26,851 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 64 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-28 03:34:26,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 431 flow [2024-06-28 03:34:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:34:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:34:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-28 03:34:26,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725490196078431 [2024-06-28 03:34:26,854 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 146 transitions. [2024-06-28 03:34:26,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 431 flow [2024-06-28 03:34:26,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 412 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:34:26,857 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 225 flow [2024-06-28 03:34:26,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-28 03:34:26,857 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-06-28 03:34:26,858 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 225 flow [2024-06-28 03:34:26,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:26,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:26,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:26,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:34:26,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:26,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1202062927, now seen corresponding path program 1 times [2024-06-28 03:34:26,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:26,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947535874] [2024-06-28 03:34:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:26,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:28,065 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 03:34:28,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:28,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947535874] [2024-06-28 03:34:28,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947535874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:28,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:28,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:28,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314666149] [2024-06-28 03:34:28,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:28,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:28,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:28,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:34:28,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:28,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:28,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:34:28,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:29,382 INFO L124 PetriNetUnfolderBase]: 9541/13143 cut-off events. [2024-06-28 03:34:29,383 INFO L125 PetriNetUnfolderBase]: For 13690/13690 co-relation queries the response was YES. [2024-06-28 03:34:29,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36701 conditions, 13143 events. 9541/13143 cut-off events. For 13690/13690 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 69902 event pairs, 4602 based on Foata normal form. 8/13118 useless extension candidates. Maximal degree in co-relation 36686. Up to 12846 conditions per place. [2024-06-28 03:34:29,464 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 71 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-28 03:34:29,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 515 flow [2024-06-28 03:34:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:29,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-28 03:34:29,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5522875816993464 [2024-06-28 03:34:29,466 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 225 flow. Second operand 6 states and 169 transitions. [2024-06-28 03:34:29,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 515 flow [2024-06-28 03:34:29,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 482 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:29,469 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 256 flow [2024-06-28 03:34:29,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-28 03:34:29,470 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 03:34:29,470 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 256 flow [2024-06-28 03:34:29,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:29,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:29,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:29,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:34:29,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:29,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1198197421, now seen corresponding path program 1 times [2024-06-28 03:34:29,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:29,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560191931] [2024-06-28 03:34:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:29,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:30,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560191931] [2024-06-28 03:34:30,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560191931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:30,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:30,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:34:30,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740571893] [2024-06-28 03:34:30,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:30,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:34:30,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:30,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:34:30,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:34:30,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:30,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 03:34:30,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:30,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:30,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:31,213 INFO L124 PetriNetUnfolderBase]: 8137/11567 cut-off events. [2024-06-28 03:34:31,213 INFO L125 PetriNetUnfolderBase]: For 18131/18131 co-relation queries the response was YES. [2024-06-28 03:34:31,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34439 conditions, 11567 events. 8137/11567 cut-off events. For 18131/18131 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 64197 event pairs, 4690 based on Foata normal form. 3/11567 useless extension candidates. Maximal degree in co-relation 34422. Up to 11079 conditions per place. [2024-06-28 03:34:31,284 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 58 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-28 03:34:31,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 474 flow [2024-06-28 03:34:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 03:34:31,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-06-28 03:34:31,286 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 256 flow. Second operand 6 states and 134 transitions. [2024-06-28 03:34:31,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 474 flow [2024-06-28 03:34:31,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 426 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:34:31,294 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 292 flow [2024-06-28 03:34:31,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-06-28 03:34:31,297 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-28 03:34:31,298 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 292 flow [2024-06-28 03:34:31,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 03:34:31,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:31,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:31,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:34:31,298 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:31,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1430906450, now seen corresponding path program 1 times [2024-06-28 03:34:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:31,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452288597] [2024-06-28 03:34:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:31,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:32,100 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 03:34:32,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:32,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452288597] [2024-06-28 03:34:32,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452288597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:32,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:32,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:32,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736690849] [2024-06-28 03:34:32,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:32,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:32,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:32,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:32,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:32,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 292 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 03:34:32,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:32,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:32,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:33,285 INFO L124 PetriNetUnfolderBase]: 9577/13226 cut-off events. [2024-06-28 03:34:33,285 INFO L125 PetriNetUnfolderBase]: For 31032/31032 co-relation queries the response was YES. [2024-06-28 03:34:33,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42846 conditions, 13226 events. 9577/13226 cut-off events. For 31032/31032 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 70244 event pairs, 5495 based on Foata normal form. 3/13224 useless extension candidates. Maximal degree in co-relation 42826. Up to 12957 conditions per place. [2024-06-28 03:34:33,351 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 68 selfloop transitions, 21 changer transitions 0/95 dead transitions. [2024-06-28 03:34:33,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 594 flow [2024-06-28 03:34:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 03:34:33,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-06-28 03:34:33,352 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 292 flow. Second operand 7 states and 154 transitions. [2024-06-28 03:34:33,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 594 flow [2024-06-28 03:34:33,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 559 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:33,359 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 384 flow [2024-06-28 03:34:33,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-06-28 03:34:33,359 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-28 03:34:33,359 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 384 flow [2024-06-28 03:34:33,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 03:34:33,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:33,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:33,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:34:33,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:33,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1458761810, now seen corresponding path program 2 times [2024-06-28 03:34:33,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:33,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423245495] [2024-06-28 03:34:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:33,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:34,070 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 03:34:34,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:34,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423245495] [2024-06-28 03:34:34,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423245495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:34,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:34,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:34,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954522274] [2024-06-28 03:34:34,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:34,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:34,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:34,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:34,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:34,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 03:34:34,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:34,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:34,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:35,198 INFO L124 PetriNetUnfolderBase]: 9599/13284 cut-off events. [2024-06-28 03:34:35,198 INFO L125 PetriNetUnfolderBase]: For 42177/42189 co-relation queries the response was YES. [2024-06-28 03:34:35,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46398 conditions, 13284 events. 9599/13284 cut-off events. For 42177/42189 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 70736 event pairs, 5475 based on Foata normal form. 11/13288 useless extension candidates. Maximal degree in co-relation 46376. Up to 12939 conditions per place. [2024-06-28 03:34:35,262 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 69 selfloop transitions, 30 changer transitions 0/105 dead transitions. [2024-06-28 03:34:35,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 105 transitions, 764 flow [2024-06-28 03:34:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 03:34:35,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-06-28 03:34:35,264 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 384 flow. Second operand 6 states and 144 transitions. [2024-06-28 03:34:35,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 105 transitions, 764 flow [2024-06-28 03:34:35,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 105 transitions, 720 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 03:34:35,273 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 499 flow [2024-06-28 03:34:35,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2024-06-28 03:34:35,274 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-28 03:34:35,274 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 499 flow [2024-06-28 03:34:35,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 03:34:35,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:35,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:35,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:34:35,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:35,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:35,275 INFO L85 PathProgramCache]: Analyzing trace with hash 740447338, now seen corresponding path program 3 times [2024-06-28 03:34:35,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:35,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65432572] [2024-06-28 03:34:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:35,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:35,931 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 03:34:35,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:35,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65432572] [2024-06-28 03:34:35,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65432572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:35,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:35,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453792706] [2024-06-28 03:34:35,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:35,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:35,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:35,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:36,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:36,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 499 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 03:34:36,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:36,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:36,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:37,368 INFO L124 PetriNetUnfolderBase]: 9626/13326 cut-off events. [2024-06-28 03:34:37,369 INFO L125 PetriNetUnfolderBase]: For 56374/56374 co-relation queries the response was YES. [2024-06-28 03:34:37,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49867 conditions, 13326 events. 9626/13326 cut-off events. For 56374/56374 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 70967 event pairs, 5466 based on Foata normal form. 3/13326 useless extension candidates. Maximal degree in co-relation 49843. Up to 13007 conditions per place. [2024-06-28 03:34:37,446 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 83 selfloop transitions, 31 changer transitions 0/120 dead transitions. [2024-06-28 03:34:37,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 871 flow [2024-06-28 03:34:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 03:34:37,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2024-06-28 03:34:37,447 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 499 flow. Second operand 7 states and 165 transitions. [2024-06-28 03:34:37,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 871 flow [2024-06-28 03:34:37,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 802 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 03:34:37,473 INFO L231 Difference]: Finished difference. Result has 79 places, 89 transitions, 590 flow [2024-06-28 03:34:37,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=79, PETRI_TRANSITIONS=89} [2024-06-28 03:34:37,474 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-28 03:34:37,474 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 89 transitions, 590 flow [2024-06-28 03:34:37,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 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 03:34:37,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:37,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:37,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:34:37,475 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:37,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash 416520844, now seen corresponding path program 1 times [2024-06-28 03:34:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671545001] [2024-06-28 03:34:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:37,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:38,468 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 03:34:38,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:38,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671545001] [2024-06-28 03:34:38,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671545001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:38,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:38,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:38,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152666055] [2024-06-28 03:34:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:38,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:38,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:38,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:38,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:38,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:38,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 89 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:38,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:38,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:38,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:39,819 INFO L124 PetriNetUnfolderBase]: 10021/14135 cut-off events. [2024-06-28 03:34:39,820 INFO L125 PetriNetUnfolderBase]: For 63399/63399 co-relation queries the response was YES. [2024-06-28 03:34:39,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53252 conditions, 14135 events. 10021/14135 cut-off events. For 63399/63399 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 77882 event pairs, 5576 based on Foata normal form. 3/14135 useless extension candidates. Maximal degree in co-relation 53225. Up to 13574 conditions per place. [2024-06-28 03:34:39,884 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 102 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2024-06-28 03:34:39,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 127 transitions, 987 flow [2024-06-28 03:34:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 03:34:39,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-28 03:34:39,885 INFO L175 Difference]: Start difference. First operand has 79 places, 89 transitions, 590 flow. Second operand 7 states and 161 transitions. [2024-06-28 03:34:39,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 127 transitions, 987 flow [2024-06-28 03:34:39,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 907 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:39,917 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 635 flow [2024-06-28 03:34:39,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=635, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2024-06-28 03:34:39,917 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-28 03:34:39,918 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 635 flow [2024-06-28 03:34:39,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:39,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:39,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:39,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:34:39,918 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:39,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1005558990, now seen corresponding path program 1 times [2024-06-28 03:34:39,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:39,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955951820] [2024-06-28 03:34:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:39,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:40,648 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 03:34:40,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:40,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955951820] [2024-06-28 03:34:40,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955951820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:40,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:40,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:40,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524185436] [2024-06-28 03:34:40,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:40,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:40,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:40,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 635 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:40,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:40,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:40,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:42,243 INFO L124 PetriNetUnfolderBase]: 11525/15883 cut-off events. [2024-06-28 03:34:42,243 INFO L125 PetriNetUnfolderBase]: For 95717/95717 co-relation queries the response was YES. [2024-06-28 03:34:42,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65517 conditions, 15883 events. 11525/15883 cut-off events. For 95717/95717 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 85805 event pairs, 5497 based on Foata normal form. 6/15881 useless extension candidates. Maximal degree in co-relation 65489. Up to 15489 conditions per place. [2024-06-28 03:34:42,569 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 103 selfloop transitions, 32 changer transitions 0/142 dead transitions. [2024-06-28 03:34:42,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 142 transitions, 1083 flow [2024-06-28 03:34:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 03:34:42,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2024-06-28 03:34:42,571 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 635 flow. Second operand 7 states and 169 transitions. [2024-06-28 03:34:42,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 142 transitions, 1083 flow [2024-06-28 03:34:42,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 142 transitions, 1020 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:34:42,597 INFO L231 Difference]: Finished difference. Result has 85 places, 105 transitions, 727 flow [2024-06-28 03:34:42,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=727, PETRI_PLACES=85, PETRI_TRANSITIONS=105} [2024-06-28 03:34:42,598 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 03:34:42,598 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 105 transitions, 727 flow [2024-06-28 03:34:42,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:42,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:42,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:42,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:34:42,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:42,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash 20570064, now seen corresponding path program 2 times [2024-06-28 03:34:42,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:42,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770456938] [2024-06-28 03:34:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:42,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:43,320 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 03:34:43,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:43,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770456938] [2024-06-28 03:34:43,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770456938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:43,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:43,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:43,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886140623] [2024-06-28 03:34:43,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:43,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:43,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:43,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:43,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:43,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 105 transitions, 727 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:43,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:43,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:43,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:44,957 INFO L124 PetriNetUnfolderBase]: 11752/16218 cut-off events. [2024-06-28 03:34:44,957 INFO L125 PetriNetUnfolderBase]: For 121953/121953 co-relation queries the response was YES. [2024-06-28 03:34:45,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72475 conditions, 16218 events. 11752/16218 cut-off events. For 121953/121953 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 87577 event pairs, 5097 based on Foata normal form. 12/16227 useless extension candidates. Maximal degree in co-relation 72445. Up to 15561 conditions per place. [2024-06-28 03:34:45,071 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 102 selfloop transitions, 45 changer transitions 0/154 dead transitions. [2024-06-28 03:34:45,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 154 transitions, 1327 flow [2024-06-28 03:34:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 03:34:45,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2024-06-28 03:34:45,072 INFO L175 Difference]: Start difference. First operand has 85 places, 105 transitions, 727 flow. Second operand 7 states and 174 transitions. [2024-06-28 03:34:45,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 154 transitions, 1327 flow [2024-06-28 03:34:45,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 154 transitions, 1256 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:45,128 INFO L231 Difference]: Finished difference. Result has 90 places, 115 transitions, 914 flow [2024-06-28 03:34:45,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=914, PETRI_PLACES=90, PETRI_TRANSITIONS=115} [2024-06-28 03:34:45,129 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-28 03:34:45,129 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 115 transitions, 914 flow [2024-06-28 03:34:45,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:45,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:45,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:45,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:34:45,130 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:45,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:45,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2023023252, now seen corresponding path program 3 times [2024-06-28 03:34:45,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:45,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905133951] [2024-06-28 03:34:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:45,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:45,931 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 03:34:45,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:45,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905133951] [2024-06-28 03:34:45,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905133951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:45,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:45,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:45,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054322153] [2024-06-28 03:34:45,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:45,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:45,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:46,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:46,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 115 transitions, 914 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:46,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:46,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:46,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:47,542 INFO L124 PetriNetUnfolderBase]: 11769/16223 cut-off events. [2024-06-28 03:34:47,542 INFO L125 PetriNetUnfolderBase]: For 154626/154638 co-relation queries the response was YES. [2024-06-28 03:34:47,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78412 conditions, 16223 events. 11769/16223 cut-off events. For 154626/154638 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 87729 event pairs, 4839 based on Foata normal form. 26/16236 useless extension candidates. Maximal degree in co-relation 78380. Up to 15353 conditions per place. [2024-06-28 03:34:47,678 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 98 selfloop transitions, 61 changer transitions 0/166 dead transitions. [2024-06-28 03:34:47,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 166 transitions, 1636 flow [2024-06-28 03:34:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:47,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 03:34:47,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014005602240896 [2024-06-28 03:34:47,680 INFO L175 Difference]: Start difference. First operand has 90 places, 115 transitions, 914 flow. Second operand 7 states and 179 transitions. [2024-06-28 03:34:47,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 166 transitions, 1636 flow [2024-06-28 03:34:47,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 166 transitions, 1560 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:47,760 INFO L231 Difference]: Finished difference. Result has 95 places, 125 transitions, 1135 flow [2024-06-28 03:34:47,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1135, PETRI_PLACES=95, PETRI_TRANSITIONS=125} [2024-06-28 03:34:47,761 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 03:34:47,761 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 125 transitions, 1135 flow [2024-06-28 03:34:47,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:47,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:47,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:47,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:34:47,761 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:47,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:47,762 INFO L85 PathProgramCache]: Analyzing trace with hash -828061236, now seen corresponding path program 1 times [2024-06-28 03:34:47,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:47,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301620189] [2024-06-28 03:34:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:47,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:48,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:48,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301620189] [2024-06-28 03:34:48,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301620189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:48,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:48,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430626681] [2024-06-28 03:34:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:48,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:48,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:48,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 125 transitions, 1135 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 03:34:48,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:48,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:48,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:50,449 INFO L124 PetriNetUnfolderBase]: 10413/14597 cut-off events. [2024-06-28 03:34:50,450 INFO L125 PetriNetUnfolderBase]: For 154458/154458 co-relation queries the response was YES. [2024-06-28 03:34:50,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73462 conditions, 14597 events. 10413/14597 cut-off events. For 154458/154458 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 79813 event pairs, 4459 based on Foata normal form. 6/14600 useless extension candidates. Maximal degree in co-relation 73427. Up to 14081 conditions per place. [2024-06-28 03:34:50,547 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 138 selfloop transitions, 22 changer transitions 0/166 dead transitions. [2024-06-28 03:34:50,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 166 transitions, 1629 flow [2024-06-28 03:34:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 03:34:50,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485294117647059 [2024-06-28 03:34:50,549 INFO L175 Difference]: Start difference. First operand has 95 places, 125 transitions, 1135 flow. Second operand 8 states and 183 transitions. [2024-06-28 03:34:50,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 166 transitions, 1629 flow [2024-06-28 03:34:50,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 166 transitions, 1460 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 03:34:50,681 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1082 flow [2024-06-28 03:34:50,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1082, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2024-06-28 03:34:50,681 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-28 03:34:50,681 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1082 flow [2024-06-28 03:34:50,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 03:34:50,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:50,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:50,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:34:50,682 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:50,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1349759235, now seen corresponding path program 1 times [2024-06-28 03:34:50,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:50,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397022848] [2024-06-28 03:34:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:50,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:51,374 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 03:34:51,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:51,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397022848] [2024-06-28 03:34:51,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397022848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:51,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:51,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:51,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918978345] [2024-06-28 03:34:51,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:51,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:51,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:51,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:51,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:51,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:51,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1082 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:51,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:51,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:51,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:52,946 INFO L124 PetriNetUnfolderBase]: 10399/14835 cut-off events. [2024-06-28 03:34:52,946 INFO L125 PetriNetUnfolderBase]: For 158415/158415 co-relation queries the response was YES. [2024-06-28 03:34:52,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73050 conditions, 14835 events. 10399/14835 cut-off events. For 158415/158415 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 82680 event pairs, 4533 based on Foata normal form. 4/14836 useless extension candidates. Maximal degree in co-relation 73014. Up to 14120 conditions per place. [2024-06-28 03:34:53,053 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 129 selfloop transitions, 11 changer transitions 0/146 dead transitions. [2024-06-28 03:34:53,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 146 transitions, 1450 flow [2024-06-28 03:34:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:34:53,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:34:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 03:34:53,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470588235294118 [2024-06-28 03:34:53,055 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1082 flow. Second operand 5 states and 114 transitions. [2024-06-28 03:34:53,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 146 transitions, 1450 flow [2024-06-28 03:34:53,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 146 transitions, 1364 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:53,163 INFO L231 Difference]: Finished difference. Result has 98 places, 132 transitions, 1081 flow [2024-06-28 03:34:53,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1081, PETRI_PLACES=98, PETRI_TRANSITIONS=132} [2024-06-28 03:34:53,163 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-06-28 03:34:53,164 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 132 transitions, 1081 flow [2024-06-28 03:34:53,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:53,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:53,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:53,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:34:53,164 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:53,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:53,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1107646903, now seen corresponding path program 1 times [2024-06-28 03:34:53,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:53,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498458413] [2024-06-28 03:34:53,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:53,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:54,247 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 03:34:54,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:54,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498458413] [2024-06-28 03:34:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498458413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:54,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:54,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:54,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420673735] [2024-06-28 03:34:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:54,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:54,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:54,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:54,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:54,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 132 transitions, 1081 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 03:34:54,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:54,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:54,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:56,119 INFO L124 PetriNetUnfolderBase]: 11681/16099 cut-off events. [2024-06-28 03:34:56,119 INFO L125 PetriNetUnfolderBase]: For 214068/214068 co-relation queries the response was YES. [2024-06-28 03:34:56,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86641 conditions, 16099 events. 11681/16099 cut-off events. For 214068/214068 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 87242 event pairs, 5068 based on Foata normal form. 3/16099 useless extension candidates. Maximal degree in co-relation 86604. Up to 15695 conditions per place. [2024-06-28 03:34:56,232 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 130 selfloop transitions, 35 changer transitions 0/172 dead transitions. [2024-06-28 03:34:56,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 172 transitions, 1594 flow [2024-06-28 03:34:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 03:34:56,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2024-06-28 03:34:56,234 INFO L175 Difference]: Start difference. First operand has 98 places, 132 transitions, 1081 flow. Second operand 7 states and 169 transitions. [2024-06-28 03:34:56,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 172 transitions, 1594 flow [2024-06-28 03:34:56,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 1539 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:56,352 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1189 flow [2024-06-28 03:34:56,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1189, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2024-06-28 03:34:56,353 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 03:34:56,353 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1189 flow [2024-06-28 03:34:56,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 03:34:56,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:56,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:56,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:34:56,354 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:56,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:56,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1103831671, now seen corresponding path program 1 times [2024-06-28 03:34:56,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:56,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395780614] [2024-06-28 03:34:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:56,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:57,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:57,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395780614] [2024-06-28 03:34:57,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395780614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:57,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:57,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:57,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222323697] [2024-06-28 03:34:57,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:57,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:57,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:57,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:57,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:57,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:34:57,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1189 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 03:34:57,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:57,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:34:57,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:59,166 INFO L124 PetriNetUnfolderBase]: 12405/17023 cut-off events. [2024-06-28 03:34:59,166 INFO L125 PetriNetUnfolderBase]: For 231290/231290 co-relation queries the response was YES. [2024-06-28 03:34:59,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90619 conditions, 17023 events. 12405/17023 cut-off events. For 231290/231290 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 89756 event pairs, 4981 based on Foata normal form. 9/17023 useless extension candidates. Maximal degree in co-relation 90581. Up to 16363 conditions per place. [2024-06-28 03:34:59,284 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 146 selfloop transitions, 70 changer transitions 0/221 dead transitions. [2024-06-28 03:34:59,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 221 transitions, 2238 flow [2024-06-28 03:34:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-28 03:34:59,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4400871459694989 [2024-06-28 03:34:59,285 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1189 flow. Second operand 9 states and 202 transitions. [2024-06-28 03:34:59,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 221 transitions, 2238 flow [2024-06-28 03:34:59,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 221 transitions, 2028 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:59,443 INFO L231 Difference]: Finished difference. Result has 109 places, 176 transitions, 1668 flow [2024-06-28 03:34:59,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1668, PETRI_PLACES=109, PETRI_TRANSITIONS=176} [2024-06-28 03:34:59,443 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-28 03:34:59,443 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 176 transitions, 1668 flow [2024-06-28 03:34:59,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 03:34:59,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:59,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:59,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:34:59,444 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:59,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash 836980651, now seen corresponding path program 2 times [2024-06-28 03:34:59,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:59,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460216905] [2024-06-28 03:34:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:59,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:00,422 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 03:35:00,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:00,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460216905] [2024-06-28 03:35:00,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460216905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:00,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:00,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468635992] [2024-06-28 03:35:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:00,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:00,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:00,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:00,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 176 transitions, 1668 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 03:35:00,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:00,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:00,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:02,318 INFO L124 PetriNetUnfolderBase]: 12537/17209 cut-off events. [2024-06-28 03:35:02,319 INFO L125 PetriNetUnfolderBase]: For 253196/253208 co-relation queries the response was YES. [2024-06-28 03:35:02,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93918 conditions, 17209 events. 12537/17209 cut-off events. For 253196/253208 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 90534 event pairs, 5000 based on Foata normal form. 17/17209 useless extension candidates. Maximal degree in co-relation 93876. Up to 16188 conditions per place. [2024-06-28 03:35:02,433 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 129 selfloop transitions, 105 changer transitions 0/239 dead transitions. [2024-06-28 03:35:02,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 239 transitions, 2446 flow [2024-06-28 03:35:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-28 03:35:02,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:35:02,436 INFO L175 Difference]: Start difference. First operand has 109 places, 176 transitions, 1668 flow. Second operand 9 states and 204 transitions. [2024-06-28 03:35:02,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 239 transitions, 2446 flow [2024-06-28 03:35:02,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 239 transitions, 2386 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-06-28 03:35:02,626 INFO L231 Difference]: Finished difference. Result has 119 places, 195 transitions, 2084 flow [2024-06-28 03:35:02,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2084, PETRI_PLACES=119, PETRI_TRANSITIONS=195} [2024-06-28 03:35:02,626 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-28 03:35:02,627 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 195 transitions, 2084 flow [2024-06-28 03:35:02,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 03:35:02,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:02,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:02,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:35:02,627 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:02,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:02,628 INFO L85 PathProgramCache]: Analyzing trace with hash 99896713, now seen corresponding path program 3 times [2024-06-28 03:35:02,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:02,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515348780] [2024-06-28 03:35:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:03,578 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 03:35:03,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:03,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515348780] [2024-06-28 03:35:03,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515348780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:03,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:03,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:03,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630290715] [2024-06-28 03:35:03,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:03,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:03,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:03,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:03,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:03,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:03,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 195 transitions, 2084 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 03:35:03,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:03,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:03,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:05,642 INFO L124 PetriNetUnfolderBase]: 12516/17169 cut-off events. [2024-06-28 03:35:05,642 INFO L125 PetriNetUnfolderBase]: For 276621/276645 co-relation queries the response was YES. [2024-06-28 03:35:05,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96807 conditions, 17169 events. 12516/17169 cut-off events. For 276621/276645 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 90261 event pairs, 4986 based on Foata normal form. 19/17179 useless extension candidates. Maximal degree in co-relation 96760. Up to 16667 conditions per place. [2024-06-28 03:35:05,793 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 181 selfloop transitions, 80 changer transitions 0/266 dead transitions. [2024-06-28 03:35:05,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 266 transitions, 3180 flow [2024-06-28 03:35:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-28 03:35:05,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:35:05,795 INFO L175 Difference]: Start difference. First operand has 119 places, 195 transitions, 2084 flow. Second operand 9 states and 204 transitions. [2024-06-28 03:35:05,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 266 transitions, 3180 flow [2024-06-28 03:35:06,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 266 transitions, 3050 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:06,038 INFO L231 Difference]: Finished difference. Result has 127 places, 219 transitions, 2529 flow [2024-06-28 03:35:06,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2529, PETRI_PLACES=127, PETRI_TRANSITIONS=219} [2024-06-28 03:35:06,039 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-28 03:35:06,039 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 219 transitions, 2529 flow [2024-06-28 03:35:06,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 03:35:06,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:06,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:06,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:35:06,039 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:06,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash -535770197, now seen corresponding path program 4 times [2024-06-28 03:35:06,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:06,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730047437] [2024-06-28 03:35:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:06,941 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 03:35:06,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730047437] [2024-06-28 03:35:06,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730047437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:06,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:35:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105726851] [2024-06-28 03:35:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:06,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:35:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:35:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:35:07,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:07,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 219 transitions, 2529 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 03:35:07,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:07,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:07,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:09,027 INFO L124 PetriNetUnfolderBase]: 12747/17483 cut-off events. [2024-06-28 03:35:09,028 INFO L125 PetriNetUnfolderBase]: For 300377/300377 co-relation queries the response was YES. [2024-06-28 03:35:09,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101081 conditions, 17483 events. 12747/17483 cut-off events. For 300377/300377 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 91941 event pairs, 4962 based on Foata normal form. 9/17489 useless extension candidates. Maximal degree in co-relation 101030. Up to 16636 conditions per place. [2024-06-28 03:35:09,198 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 197 selfloop transitions, 116 changer transitions 0/318 dead transitions. [2024-06-28 03:35:09,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 318 transitions, 3909 flow [2024-06-28 03:35:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 03:35:09,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596949891067538 [2024-06-28 03:35:09,201 INFO L175 Difference]: Start difference. First operand has 127 places, 219 transitions, 2529 flow. Second operand 9 states and 211 transitions. [2024-06-28 03:35:09,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 318 transitions, 3909 flow [2024-06-28 03:35:09,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 318 transitions, 3691 flow, removed 66 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:09,738 INFO L231 Difference]: Finished difference. Result has 136 places, 269 transitions, 3323 flow [2024-06-28 03:35:09,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3323, PETRI_PLACES=136, PETRI_TRANSITIONS=269} [2024-06-28 03:35:09,738 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-28 03:35:09,739 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 269 transitions, 3323 flow [2024-06-28 03:35:09,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 03:35:09,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:09,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:09,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:35:09,739 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:09,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash 466379785, now seen corresponding path program 1 times [2024-06-28 03:35:09,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:09,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701504590] [2024-06-28 03:35:09,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:09,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:11,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:11,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701504590] [2024-06-28 03:35:11,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701504590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:11,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:11,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:11,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986667621] [2024-06-28 03:35:11,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:11,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:11,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:11,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:11,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:11,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:35:11,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 269 transitions, 3323 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 03:35:11,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:11,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:35:11,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:13,255 INFO L124 PetriNetUnfolderBase]: 12229/16969 cut-off events. [2024-06-28 03:35:13,255 INFO L125 PetriNetUnfolderBase]: For 326487/326585 co-relation queries the response was YES. [2024-06-28 03:35:13,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101224 conditions, 16969 events. 12229/16969 cut-off events. For 326487/326585 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 92539 event pairs, 3976 based on Foata normal form. 76/17017 useless extension candidates. Maximal degree in co-relation 101169. Up to 16349 conditions per place. [2024-06-28 03:35:13,759 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 252 selfloop transitions, 48 changer transitions 0/315 dead transitions. [2024-06-28 03:35:13,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 315 transitions, 4141 flow [2024-06-28 03:35:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:13,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 03:35:13,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46568627450980393 [2024-06-28 03:35:13,760 INFO L175 Difference]: Start difference. First operand has 136 places, 269 transitions, 3323 flow. Second operand 8 states and 190 transitions. [2024-06-28 03:35:13,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 315 transitions, 4141 flow [2024-06-28 03:35:14,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 315 transitions, 3804 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:14,170 INFO L231 Difference]: Finished difference. Result has 138 places, 272 transitions, 3184 flow [2024-06-28 03:35:14,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3006, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3184, PETRI_PLACES=138, PETRI_TRANSITIONS=272} [2024-06-28 03:35:14,170 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-28 03:35:14,171 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 272 transitions, 3184 flow [2024-06-28 03:35:14,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 03:35:14,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:14,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:14,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:35:14,171 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:14,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:14,172 INFO L85 PathProgramCache]: Analyzing trace with hash 466440235, now seen corresponding path program 2 times [2024-06-28 03:35:14,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:14,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729246466] [2024-06-28 03:35:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:14,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:15,331 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 03:35:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:15,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729246466] [2024-06-28 03:35:15,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729246466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:15,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:15,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218228783] [2024-06-28 03:35:15,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:15,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:15,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:15,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:15,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:15,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:35:15,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 272 transitions, 3184 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 03:35:15,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:15,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:35:15,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:17,813 INFO L124 PetriNetUnfolderBase]: 12279/17056 cut-off events. [2024-06-28 03:35:17,813 INFO L125 PetriNetUnfolderBase]: For 362828/362880 co-relation queries the response was YES. [2024-06-28 03:35:17,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104401 conditions, 17056 events. 12279/17056 cut-off events. For 362828/362880 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 93223 event pairs, 4462 based on Foata normal form. 12/17017 useless extension candidates. Maximal degree in co-relation 104346. Up to 16255 conditions per place. [2024-06-28 03:35:17,953 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 216 selfloop transitions, 87 changer transitions 0/318 dead transitions. [2024-06-28 03:35:17,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 318 transitions, 3996 flow [2024-06-28 03:35:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 03:35:17,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2024-06-28 03:35:17,955 INFO L175 Difference]: Start difference. First operand has 138 places, 272 transitions, 3184 flow. Second operand 8 states and 191 transitions. [2024-06-28 03:35:17,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 318 transitions, 3996 flow [2024-06-28 03:35:18,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 318 transitions, 3844 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:18,486 INFO L231 Difference]: Finished difference. Result has 140 places, 275 transitions, 3305 flow [2024-06-28 03:35:18,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3305, PETRI_PLACES=140, PETRI_TRANSITIONS=275} [2024-06-28 03:35:18,486 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-28 03:35:18,487 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 275 transitions, 3305 flow [2024-06-28 03:35:18,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 03:35:18,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:18,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:18,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:35:18,487 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:18,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:18,487 INFO L85 PathProgramCache]: Analyzing trace with hash 140773011, now seen corresponding path program 3 times [2024-06-28 03:35:18,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:18,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614257240] [2024-06-28 03:35:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:19,563 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 03:35:19,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:19,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614257240] [2024-06-28 03:35:19,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614257240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:19,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:19,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:19,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209639924] [2024-06-28 03:35:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:19,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:19,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:19,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:19,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:35:19,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 275 transitions, 3305 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 03:35:19,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:19,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:35:19,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:21,980 INFO L124 PetriNetUnfolderBase]: 12507/17373 cut-off events. [2024-06-28 03:35:21,980 INFO L125 PetriNetUnfolderBase]: For 422030/422082 co-relation queries the response was YES. [2024-06-28 03:35:22,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109973 conditions, 17373 events. 12507/17373 cut-off events. For 422030/422082 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 94823 event pairs, 4485 based on Foata normal form. 42/17369 useless extension candidates. Maximal degree in co-relation 109917. Up to 16017 conditions per place. [2024-06-28 03:35:22,182 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 165 selfloop transitions, 144 changer transitions 0/324 dead transitions. [2024-06-28 03:35:22,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 324 transitions, 4153 flow [2024-06-28 03:35:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 03:35:22,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48284313725490197 [2024-06-28 03:35:22,183 INFO L175 Difference]: Start difference. First operand has 140 places, 275 transitions, 3305 flow. Second operand 8 states and 197 transitions. [2024-06-28 03:35:22,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 324 transitions, 4153 flow [2024-06-28 03:35:22,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 324 transitions, 3928 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:22,748 INFO L231 Difference]: Finished difference. Result has 142 places, 278 transitions, 3469 flow [2024-06-28 03:35:22,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3080, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3469, PETRI_PLACES=142, PETRI_TRANSITIONS=278} [2024-06-28 03:35:22,749 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-28 03:35:22,749 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 278 transitions, 3469 flow [2024-06-28 03:35:22,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 03:35:22,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:22,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:22,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:35:22,749 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:22,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:22,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1706790647, now seen corresponding path program 1 times [2024-06-28 03:35:22,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:22,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068078822] [2024-06-28 03:35:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:24,157 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 03:35:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:24,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068078822] [2024-06-28 03:35:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068078822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:24,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208115225] [2024-06-28 03:35:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:24,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:24,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:24,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 278 transitions, 3469 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:24,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:24,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:24,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:27,100 INFO L124 PetriNetUnfolderBase]: 13163/18104 cut-off events. [2024-06-28 03:35:27,100 INFO L125 PetriNetUnfolderBase]: For 455385/455397 co-relation queries the response was YES. [2024-06-28 03:35:27,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116074 conditions, 18104 events. 13163/18104 cut-off events. For 455385/455397 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 96091 event pairs, 4731 based on Foata normal form. 14/18108 useless extension candidates. Maximal degree in co-relation 116017. Up to 17716 conditions per place. [2024-06-28 03:35:27,280 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 273 selfloop transitions, 48 changer transitions 0/326 dead transitions. [2024-06-28 03:35:27,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 326 transitions, 4325 flow [2024-06-28 03:35:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:35:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:35:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 03:35:27,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137254901960784 [2024-06-28 03:35:27,282 INFO L175 Difference]: Start difference. First operand has 142 places, 278 transitions, 3469 flow. Second operand 10 states and 211 transitions. [2024-06-28 03:35:27,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 326 transitions, 4325 flow [2024-06-28 03:35:28,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 326 transitions, 3994 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:28,055 INFO L231 Difference]: Finished difference. Result has 146 places, 281 transitions, 3325 flow [2024-06-28 03:35:28,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3325, PETRI_PLACES=146, PETRI_TRANSITIONS=281} [2024-06-28 03:35:28,056 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-28 03:35:28,056 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 281 transitions, 3325 flow [2024-06-28 03:35:28,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:28,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:28,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:28,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:35:28,056 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:28,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:28,056 INFO L85 PathProgramCache]: Analyzing trace with hash -936461668, now seen corresponding path program 1 times [2024-06-28 03:35:28,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:28,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115166770] [2024-06-28 03:35:28,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:28,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:28,929 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 03:35:28,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:28,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115166770] [2024-06-28 03:35:28,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115166770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:28,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:28,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:28,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805851060] [2024-06-28 03:35:28,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:28,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:28,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:28,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:28,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:28,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:28,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 281 transitions, 3325 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 03:35:28,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:28,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:28,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:31,472 INFO L124 PetriNetUnfolderBase]: 13195/18165 cut-off events. [2024-06-28 03:35:31,472 INFO L125 PetriNetUnfolderBase]: For 484766/484766 co-relation queries the response was YES. [2024-06-28 03:35:31,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117700 conditions, 18165 events. 13195/18165 cut-off events. For 484766/484766 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 96581 event pairs, 4760 based on Foata normal form. 4/18163 useless extension candidates. Maximal degree in co-relation 117642. Up to 17797 conditions per place. [2024-06-28 03:35:31,616 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 280 selfloop transitions, 31 changer transitions 0/316 dead transitions. [2024-06-28 03:35:31,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 316 transitions, 4245 flow [2024-06-28 03:35:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 03:35:31,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2024-06-28 03:35:31,617 INFO L175 Difference]: Start difference. First operand has 146 places, 281 transitions, 3325 flow. Second operand 6 states and 140 transitions. [2024-06-28 03:35:31,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 316 transitions, 4245 flow [2024-06-28 03:35:32,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 316 transitions, 4100 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:32,334 INFO L231 Difference]: Finished difference. Result has 146 places, 289 transitions, 3389 flow [2024-06-28 03:35:32,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3389, PETRI_PLACES=146, PETRI_TRANSITIONS=289} [2024-06-28 03:35:32,334 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-28 03:35:32,335 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 289 transitions, 3389 flow [2024-06-28 03:35:32,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 03:35:32,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:32,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:32,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:35:32,335 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:32,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:32,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1434343411, now seen corresponding path program 2 times [2024-06-28 03:35:32,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:32,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907367443] [2024-06-28 03:35:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:32,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:33,588 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 03:35:33,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:33,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907367443] [2024-06-28 03:35:33,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907367443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:33,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:33,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:33,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992247071] [2024-06-28 03:35:33,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:33,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:33,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:33,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:33,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 289 transitions, 3389 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:33,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:33,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:33,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:36,495 INFO L124 PetriNetUnfolderBase]: 13395/18454 cut-off events. [2024-06-28 03:35:36,495 INFO L125 PetriNetUnfolderBase]: For 542636/542648 co-relation queries the response was YES. [2024-06-28 03:35:36,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123285 conditions, 18454 events. 13395/18454 cut-off events. For 542636/542648 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 98289 event pairs, 4727 based on Foata normal form. 44/18477 useless extension candidates. Maximal degree in co-relation 123226. Up to 17050 conditions per place. [2024-06-28 03:35:36,638 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 190 selfloop transitions, 150 changer transitions 0/345 dead transitions. [2024-06-28 03:35:36,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 345 transitions, 4329 flow [2024-06-28 03:35:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 03:35:36,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684095860566449 [2024-06-28 03:35:36,639 INFO L175 Difference]: Start difference. First operand has 146 places, 289 transitions, 3389 flow. Second operand 9 states and 215 transitions. [2024-06-28 03:35:36,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 345 transitions, 4329 flow [2024-06-28 03:35:37,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 345 transitions, 4258 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-28 03:35:37,274 INFO L231 Difference]: Finished difference. Result has 153 places, 292 transitions, 3720 flow [2024-06-28 03:35:37,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3318, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3720, PETRI_PLACES=153, PETRI_TRANSITIONS=292} [2024-06-28 03:35:37,274 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 03:35:37,274 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 292 transitions, 3720 flow [2024-06-28 03:35:37,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:37,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:37,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:37,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:35:37,275 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:37,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:37,275 INFO L85 PathProgramCache]: Analyzing trace with hash 176412849, now seen corresponding path program 4 times [2024-06-28 03:35:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:37,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826170466] [2024-06-28 03:35:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:37,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:38,468 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 03:35:38,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826170466] [2024-06-28 03:35:38,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826170466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:38,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:38,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:38,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176911497] [2024-06-28 03:35:38,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:38,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:38,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:38,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:38,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:38,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:35:38,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 292 transitions, 3720 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 03:35:38,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:38,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:35:38,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:41,190 INFO L124 PetriNetUnfolderBase]: 12929/18002 cut-off events. [2024-06-28 03:35:41,190 INFO L125 PetriNetUnfolderBase]: For 607528/607577 co-relation queries the response was YES. [2024-06-28 03:35:41,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126124 conditions, 18002 events. 12929/18002 cut-off events. For 607528/607577 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 98958 event pairs, 4477 based on Foata normal form. 50/17988 useless extension candidates. Maximal degree in co-relation 126063. Up to 16324 conditions per place. [2024-06-28 03:35:41,612 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 151 selfloop transitions, 177 changer transitions 0/343 dead transitions. [2024-06-28 03:35:41,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 343 transitions, 4772 flow [2024-06-28 03:35:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 03:35:41,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2024-06-28 03:35:41,614 INFO L175 Difference]: Start difference. First operand has 153 places, 292 transitions, 3720 flow. Second operand 8 states and 202 transitions. [2024-06-28 03:35:41,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 343 transitions, 4772 flow [2024-06-28 03:35:42,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 343 transitions, 4416 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:35:42,318 INFO L231 Difference]: Finished difference. Result has 154 places, 295 transitions, 3831 flow [2024-06-28 03:35:42,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3831, PETRI_PLACES=154, PETRI_TRANSITIONS=295} [2024-06-28 03:35:42,319 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-28 03:35:42,319 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 295 transitions, 3831 flow [2024-06-28 03:35:42,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 03:35:42,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:42,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:42,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:35:42,319 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:42,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1197871381, now seen corresponding path program 3 times [2024-06-28 03:35:42,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:42,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836802793] [2024-06-28 03:35:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:42,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:43,480 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 03:35:43,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836802793] [2024-06-28 03:35:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836802793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:43,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:43,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:43,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215127360] [2024-06-28 03:35:43,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:43,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:43,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:43,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:43,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:43,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 295 transitions, 3831 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:43,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:43,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:43,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:46,572 INFO L124 PetriNetUnfolderBase]: 13798/19063 cut-off events. [2024-06-28 03:35:46,573 INFO L125 PetriNetUnfolderBase]: For 651498/651510 co-relation queries the response was YES. [2024-06-28 03:35:46,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134423 conditions, 19063 events. 13798/19063 cut-off events. For 651498/651510 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 102388 event pairs, 4286 based on Foata normal form. 14/19056 useless extension candidates. Maximal degree in co-relation 134361. Up to 16858 conditions per place. [2024-06-28 03:35:46,718 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 153 selfloop transitions, 205 changer transitions 0/363 dead transitions. [2024-06-28 03:35:46,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 363 transitions, 5256 flow [2024-06-28 03:35:46,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:46,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 03:35:46,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793028322440087 [2024-06-28 03:35:46,720 INFO L175 Difference]: Start difference. First operand has 154 places, 295 transitions, 3831 flow. Second operand 9 states and 220 transitions. [2024-06-28 03:35:46,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 363 transitions, 5256 flow [2024-06-28 03:35:47,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 363 transitions, 4834 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:47,653 INFO L231 Difference]: Finished difference. Result has 157 places, 304 transitions, 4054 flow [2024-06-28 03:35:47,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4054, PETRI_PLACES=157, PETRI_TRANSITIONS=304} [2024-06-28 03:35:47,654 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-28 03:35:47,654 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 304 transitions, 4054 flow [2024-06-28 03:35:47,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:47,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:47,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:47,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:35:47,654 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:47,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1501540995, now seen corresponding path program 4 times [2024-06-28 03:35:47,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:47,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249226291] [2024-06-28 03:35:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:47,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:48,777 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 03:35:48,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:48,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249226291] [2024-06-28 03:35:48,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249226291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:48,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:48,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278097066] [2024-06-28 03:35:48,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:48,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:48,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:48,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:48,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 304 transitions, 4054 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:48,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:48,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:48,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:51,900 INFO L124 PetriNetUnfolderBase]: 13834/19127 cut-off events. [2024-06-28 03:35:51,900 INFO L125 PetriNetUnfolderBase]: For 695397/695421 co-relation queries the response was YES. [2024-06-28 03:35:51,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137014 conditions, 19127 events. 13834/19127 cut-off events. For 695397/695421 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 103288 event pairs, 4821 based on Foata normal form. 22/19140 useless extension candidates. Maximal degree in co-relation 136951. Up to 18536 conditions per place. [2024-06-28 03:35:52,047 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 266 selfloop transitions, 88 changer transitions 0/359 dead transitions. [2024-06-28 03:35:52,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 359 transitions, 5024 flow [2024-06-28 03:35:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:35:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:35:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2024-06-28 03:35:52,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43529411764705883 [2024-06-28 03:35:52,049 INFO L175 Difference]: Start difference. First operand has 157 places, 304 transitions, 4054 flow. Second operand 10 states and 222 transitions. [2024-06-28 03:35:52,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 359 transitions, 5024 flow [2024-06-28 03:35:52,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 359 transitions, 4743 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:52,956 INFO L231 Difference]: Finished difference. Result has 163 places, 307 transitions, 4065 flow [2024-06-28 03:35:52,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3787, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4065, PETRI_PLACES=163, PETRI_TRANSITIONS=307} [2024-06-28 03:35:52,957 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-28 03:35:52,957 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 307 transitions, 4065 flow [2024-06-28 03:35:52,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:52,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:52,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:52,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:35:52,957 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:52,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash 404491939, now seen corresponding path program 1 times [2024-06-28 03:35:52,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:52,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684369288] [2024-06-28 03:35:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:52,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:54,110 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 03:35:54,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:54,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684369288] [2024-06-28 03:35:54,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684369288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:54,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:54,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:35:54,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880059974] [2024-06-28 03:35:54,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:54,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:35:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:35:54,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:35:54,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:54,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 307 transitions, 4065 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:54,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:54,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:54,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:57,152 INFO L124 PetriNetUnfolderBase]: 13860/19167 cut-off events. [2024-06-28 03:35:57,153 INFO L125 PetriNetUnfolderBase]: For 711125/711137 co-relation queries the response was YES. [2024-06-28 03:35:57,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136278 conditions, 19167 events. 13860/19167 cut-off events. For 711125/711137 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 103309 event pairs, 4708 based on Foata normal form. 14/19160 useless extension candidates. Maximal degree in co-relation 136215. Up to 17572 conditions per place. [2024-06-28 03:35:57,292 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 169 selfloop transitions, 185 changer transitions 0/359 dead transitions. [2024-06-28 03:35:57,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 359 transitions, 4957 flow [2024-06-28 03:35:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:35:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:35:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 03:35:57,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596949891067538 [2024-06-28 03:35:57,293 INFO L175 Difference]: Start difference. First operand has 163 places, 307 transitions, 4065 flow. Second operand 9 states and 211 transitions. [2024-06-28 03:35:57,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 359 transitions, 4957 flow [2024-06-28 03:35:58,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 359 transitions, 4673 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 03:35:58,541 INFO L231 Difference]: Finished difference. Result has 164 places, 311 transitions, 4192 flow [2024-06-28 03:35:58,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3781, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4192, PETRI_PLACES=164, PETRI_TRANSITIONS=311} [2024-06-28 03:35:58,541 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 110 predicate places. [2024-06-28 03:35:58,542 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 311 transitions, 4192 flow [2024-06-28 03:35:58,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 03:35:58,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:58,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:58,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:35:58,542 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:58,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash -925033828, now seen corresponding path program 2 times [2024-06-28 03:35:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:58,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764868018] [2024-06-28 03:35:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:58,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:59,269 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 03:35:59,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:59,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764868018] [2024-06-28 03:35:59,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764868018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:59,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:59,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:59,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540324477] [2024-06-28 03:35:59,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:59,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:59,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:59,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:59,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:35:59,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 311 transitions, 4192 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 03:35:59,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:59,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:35:59,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand