./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_ok.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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-deagle/circular_buffer_ok.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_ok.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:22:29,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:22:29,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:22:29,916 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:22:29,917 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:22:29,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:22:29,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:22:29,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:22:29,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:22:29,944 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:22:29,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:22:29,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:22:29,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:22:29,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:22:29,947 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:22:29,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:22:29,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:22:29,947 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:22:29,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:22:29,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:22:29,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:22:29,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:22:29,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:22:29,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:22:29,949 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:22:29,949 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:22:29,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:22:29,950 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:22:29,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:22:29,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:22:29,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:22:29,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:22:29,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:22:29,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:22:29,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:22:29,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:22:29,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:22:29,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:22:29,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:22:29,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:22:29,953 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:22:29,953 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:22:29,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:22:29,954 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:22:30,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:22:30,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:22:30,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:22:30,191 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:22:30,192 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:22:30,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_ok.yml/witness.yml [2024-02-02 09:22:30,364 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:22:30,366 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:22:30,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-02-02 09:22:31,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:22:31,709 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:22:31,709 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-02-02 09:22:31,723 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6006b11f4/418dd8518deb44b885a8113018c3fac3/FLAG9ef00844f [2024-02-02 09:22:31,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6006b11f4/418dd8518deb44b885a8113018c3fac3 [2024-02-02 09:22:31,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:22:31,738 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:22:31,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:22:31,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:22:31,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:22:31,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:22:30" (1/2) ... [2024-02-02 09:22:31,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ec2bea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:22:31, skipping insertion in model container [2024-02-02 09:22:31,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:22:30" (1/2) ... [2024-02-02 09:22:31,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f97db69 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:22:31, skipping insertion in model container [2024-02-02 09:22:31,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:22:31" (2/2) ... [2024-02-02 09:22:31,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ec2bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:31, skipping insertion in model container [2024-02-02 09:22:31,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:22:31" (2/2) ... [2024-02-02 09:22:31,748 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:22:31,907 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:22:31,908 INFO L101 nessWitnessExtractor]: Location invariant before [L745-L745] ((unsigned long )arg == 0UL) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) [2024-02-02 09:22:31,908 INFO L101 nessWitnessExtractor]: Location invariant before [L763-L763] ((send == (_Bool)1) && (receive == (_Bool)0)) && (value == 0) [2024-02-02 09:22:31,909 INFO L101 nessWitnessExtractor]: Location invariant before [L760-L760] ((send == (_Bool)0) && (receive == (_Bool)0)) && (value == 0) [2024-02-02 09:22:31,909 INFO L101 nessWitnessExtractor]: Location invariant before [L732-L732] (((((0 <= value) && (value <= 6)) && (send == (_Bool)1)) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-02-02 09:22:31,909 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L692] ((((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (value == 0)) && (max == 10) [2024-02-02 09:22:31,909 INFO L101 nessWitnessExtractor]: Location invariant before [L759-L759] ((send == (_Bool)0) && (receive == (_Bool)0)) && (value == 0) [2024-02-02 09:22:31,909 INFO L101 nessWitnessExtractor]: Location invariant before [L710-L710] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-02-02 09:22:31,909 INFO L101 nessWitnessExtractor]: Location invariant before [L720-L720] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-02-02 09:22:31,909 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] ((unsigned long )arg == 0UL) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) [2024-02-02 09:22:31,910 INFO L101 nessWitnessExtractor]: Location invariant before [L750-L750] (((((((-128 <= value) && (0 <= value)) && (value <= 6)) && (value <= 127)) && (receive == (_Bool)1)) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-02-02 09:22:31,910 INFO L101 nessWitnessExtractor]: Location invariant before [L699-L699] (((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && (send == (_Bool)0 || send == (_Bool)1) [2024-02-02 09:22:31,910 INFO L101 nessWitnessExtractor]: Location invariant before [L734-L734] (((send == (_Bool)0) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((value == 3 && i == 3) || (value == 2 && i == 2)) || (value == 1 && i == 1)) || ((0 == i && value == 0) && i == 0)) || (((5 <= value && 5 <= i) && value <= 6) && i <= 6)) || (value == 4 && i == 4)) [2024-02-02 09:22:31,910 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] ((((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (value == 0)) && (max == 10) [2024-02-02 09:22:31,910 INFO L101 nessWitnessExtractor]: Location invariant before [L711-L711] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-02-02 09:22:31,910 INFO L101 nessWitnessExtractor]: Location invariant before [L751-L751] (((((((-128 <= value) && (0 <= value)) && (value <= 6)) && (value <= 127)) && (receive == (_Bool)0)) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-02-02 09:22:31,910 INFO L101 nessWitnessExtractor]: Location invariant before [L733-L733] (((send == (_Bool)1) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((value == 3 && i == 3) || (value == 2 && i == 2)) || (value == 1 && i == 1)) || ((0 == i && value == 0) && i == 0)) || (((5 <= value && 5 <= i) && value <= 6) && i <= 6)) || (value == 4 && i == 4)) [2024-02-02 09:22:31,910 INFO L101 nessWitnessExtractor]: Location invariant before [L748-L749] (((((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && ((((((((((i == 4 || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || (5 <= i && i <= 6)) [2024-02-02 09:22:31,911 INFO L101 nessWitnessExtractor]: Location invariant after [L748-L749] (((((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) [2024-02-02 09:22:31,911 INFO L101 nessWitnessExtractor]: Location invariant before [L718-L718] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-02-02 09:22:31,911 INFO L101 nessWitnessExtractor]: Location invariant before [L746-L752] (((((0 <= value) && (value <= 6)) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) [2024-02-02 09:22:31,911 INFO L101 nessWitnessExtractor]: Location invariant before [L753-L753] (((((0 <= value) && (value <= 6)) && (receive == (_Bool)0)) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-02-02 09:22:31,911 INFO L101 nessWitnessExtractor]: Loop invariant at [L743-L754] (unsigned long )arg == 0UL [2024-02-02 09:22:31,912 INFO L101 nessWitnessExtractor]: Location invariant before [L738-L738] (i == 7) && ((unsigned long )arg == 0UL) [2024-02-02 09:22:31,912 INFO L101 nessWitnessExtractor]: Location invariant before [L713-L714] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-02-02 09:22:31,912 INFO L101 nessWitnessExtractor]: Location invariant before [L761-L761] ((send == (_Bool)0) && (receive == (_Bool)0)) && (value == 0) [2024-02-02 09:22:31,912 INFO L101 nessWitnessExtractor]: Location invariant before [L728-L735] (((((0 <= value) && (value <= 6)) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) [2024-02-02 09:22:31,912 INFO L101 nessWitnessExtractor]: Location invariant before [L708-L719] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-02-02 09:22:31,912 INFO L101 nessWitnessExtractor]: Location invariant before [L755-L755] (i == 7) && ((unsigned long )arg == 0UL) [2024-02-02 09:22:31,912 INFO L101 nessWitnessExtractor]: Location invariant before [L736-L736] (((((0 <= value) && (value <= 6)) && (send == (_Bool)0)) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-02-02 09:22:31,913 INFO L101 nessWitnessExtractor]: Location invariant before [L698-L698] (((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && (send == (_Bool)0 || send == (_Bool)1) [2024-02-02 09:22:31,913 INFO L101 nessWitnessExtractor]: Loop invariant at [L725-L737] (unsigned long )arg == 0UL [2024-02-02 09:22:31,913 INFO L101 nessWitnessExtractor]: Location invariant before [L762-L762] ((send == (_Bool)1) && (receive == (_Bool)0)) && (value == 0) [2024-02-02 09:22:31,913 INFO L101 nessWitnessExtractor]: Location invariant after [L689-L693] ((((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (value == 0)) && (max == 10) [2024-02-02 09:22:31,913 INFO L101 nessWitnessExtractor]: Location invariant before [L696-L704] (((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && (send == (_Bool)0 || send == (_Bool)1) [2024-02-02 09:22:31,913 INFO L101 nessWitnessExtractor]: Location invariant before [L730-L731] (((((0 <= value) && (value <= 6)) && (send == (_Bool)1)) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((((((i == 4 || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || (5 <= i && i <= 6)) [2024-02-02 09:22:31,914 INFO L101 nessWitnessExtractor]: Location invariant after [L730-L731] (((((0 <= value) && (value <= 6)) && (send == (_Bool)1)) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && (((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) [2024-02-02 09:22:31,914 INFO L101 nessWitnessExtractor]: Location invariant before [L703-L703] (((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && (send == (_Bool)0 || send == (_Bool)1) [2024-02-02 09:22:31,949 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:22:32,215 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2024-02-02 09:22:32,224 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2024-02-02 09:22:32,233 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2024-02-02 09:22:32,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:22:32,247 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-02-02 09:22:32,319 WARN L424 MainDispatcher]: Unable to annotate void initLog(int max) { buffer_size = max; first = next = 0; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:22:32,330 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:22:32,353 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:22:32,369 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:22:32,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:22:32,409 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:22:32,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32 WrapperNode [2024-02-02 09:22:32,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:22:32,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:22:32,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:22:32,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:22:32,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,500 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 186 [2024-02-02 09:22:32,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:22:32,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:22:32,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:22:32,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:22:32,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,546 INFO L175 MemorySlicer]: Split 18 memory accesses to 6 slices as follows [2, 1, 3, 8, 2, 2]. 44 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 0, 8, 0, 0]. The 4 writes are split as follows [0, 0, 2, 0, 1, 1]. [2024-02-02 09:22:32,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:22:32,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:22:32,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:22:32,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:22:32,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (1/1) ... [2024-02-02 09:22:32,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:22:32,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:22:32,636 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) [2024-02-02 09:22:32,709 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 [2024-02-02 09:22:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:22:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:22:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:22:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:22:32,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 09:22:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-02 09:22:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-02-02 09:22:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-02-02 09:22:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-02-02 09:22:32,737 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-02-02 09:22:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:22:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:22:32,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:22:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:22:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:22:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-02 09:22:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:22:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:22:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:22:32,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:22:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-02-02 09:22:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-02-02 09:22:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-02-02 09:22:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-02-02 09:22:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-02-02 09:22:32,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-02-02 09:22:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:22:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:22:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:22:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:22:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:22:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-02 09:22:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:22:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:22:32,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:22:32,743 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:22:32,869 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:22:32,871 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:22:33,239 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:22:33,241 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:22:33,378 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:22:33,378 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-02 09:22:33,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:22:33 BoogieIcfgContainer [2024-02-02 09:22:33,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:22:33,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:22:33,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:22:33,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:22:33,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:22:30" (1/4) ... [2024-02-02 09:22:33,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8c3a09 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:22:33, skipping insertion in model container [2024-02-02 09:22:33,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:22:31" (2/4) ... [2024-02-02 09:22:33,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8c3a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:22:33, skipping insertion in model container [2024-02-02 09:22:33,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:22:32" (3/4) ... [2024-02-02 09:22:33,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8c3a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:22:33, skipping insertion in model container [2024-02-02 09:22:33,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:22:33" (4/4) ... [2024-02-02 09:22:33,387 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-02-02 09:22:33,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:22:33,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2024-02-02 09:22:33,401 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:22:33,479 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-02 09:22:33,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 123 transitions, 260 flow [2024-02-02 09:22:33,563 INFO L124 PetriNetUnfolderBase]: 9/121 cut-off events. [2024-02-02 09:22:33,563 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:22:33,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 121 events. 9/121 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 408 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 103. Up to 2 conditions per place. [2024-02-02 09:22:33,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 123 transitions, 260 flow [2024-02-02 09:22:33,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 119 transitions, 247 flow [2024-02-02 09:22:33,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:22:33,593 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;@32079e57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:22:33,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2024-02-02 09:22:33,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:22:33,597 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:22:33,597 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:22:33,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:33,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:22:33,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:33,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 14828, now seen corresponding path program 1 times [2024-02-02 09:22:33,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:33,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143356373] [2024-02-02 09:22:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:33,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:33,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143356373] [2024-02-02 09:22:33,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143356373] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:33,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:33,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:22:33,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087028766] [2024-02-02 09:22:33,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:33,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:22:33,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:34,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:22:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:22:34,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 123 [2024-02-02 09:22:34,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:34,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:34,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 123 [2024-02-02 09:22:34,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:34,586 INFO L124 PetriNetUnfolderBase]: 1437/3395 cut-off events. [2024-02-02 09:22:34,587 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-02-02 09:22:34,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5726 conditions, 3395 events. 1437/3395 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 25907 event pairs, 1116 based on Foata normal form. 120/3089 useless extension candidates. Maximal degree in co-relation 5490. Up to 2261 conditions per place. [2024-02-02 09:22:34,616 INFO L140 encePairwiseOnDemand]: 115/123 looper letters, 51 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2024-02-02 09:22:34,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 341 flow [2024-02-02 09:22:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:22:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:22:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2024-02-02 09:22:34,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6639566395663956 [2024-02-02 09:22:34,636 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 247 flow. Second operand 3 states and 245 transitions. [2024-02-02 09:22:34,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 341 flow [2024-02-02 09:22:34,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:22:34,644 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 234 flow [2024-02-02 09:22:34,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=113, PETRI_TRANSITIONS=113} [2024-02-02 09:22:34,649 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -4 predicate places. [2024-02-02 09:22:34,649 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 234 flow [2024-02-02 09:22:34,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:34,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:34,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-02 09:22:34,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:22:34,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:34,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 14265498, now seen corresponding path program 1 times [2024-02-02 09:22:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:34,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548910500] [2024-02-02 09:22:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:34,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:34,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548910500] [2024-02-02 09:22:34,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548910500] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:34,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:34,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:34,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146958379] [2024-02-02 09:22:34,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:34,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:22:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:34,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:22:34,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:22:34,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2024-02-02 09:22:34,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:34,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:34,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2024-02-02 09:22:34,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:35,428 INFO L124 PetriNetUnfolderBase]: 2548/6061 cut-off events. [2024-02-02 09:22:35,428 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-02-02 09:22:35,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10124 conditions, 6061 events. 2548/6061 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 47479 event pairs, 955 based on Foata normal form. 0/5374 useless extension candidates. Maximal degree in co-relation 10107. Up to 2055 conditions per place. [2024-02-02 09:22:35,455 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 89 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2024-02-02 09:22:35,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 152 transitions, 503 flow [2024-02-02 09:22:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:22:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:22:35,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2024-02-02 09:22:35,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439024390243903 [2024-02-02 09:22:35,457 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 234 flow. Second operand 5 states and 396 transitions. [2024-02-02 09:22:35,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 152 transitions, 503 flow [2024-02-02 09:22:35,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 152 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:35,460 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 242 flow [2024-02-02 09:22:35,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2024-02-02 09:22:35,461 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2024-02-02 09:22:35,461 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 242 flow [2024-02-02 09:22:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:35,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:35,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:35,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:22:35,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:35,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:35,463 INFO L85 PathProgramCache]: Analyzing trace with hash -217841028, now seen corresponding path program 1 times [2024-02-02 09:22:35,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:35,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825574392] [2024-02-02 09:22:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:35,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:35,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825574392] [2024-02-02 09:22:35,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825574392] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:35,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:35,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:35,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071392688] [2024-02-02 09:22:35,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:35,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:22:35,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:22:35,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:22:35,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-02-02 09:22:35,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:35,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:35,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-02-02 09:22:35,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:36,003 INFO L124 PetriNetUnfolderBase]: 1570/3954 cut-off events. [2024-02-02 09:22:36,003 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-02-02 09:22:36,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6606 conditions, 3954 events. 1570/3954 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 29412 event pairs, 641 based on Foata normal form. 18/3419 useless extension candidates. Maximal degree in co-relation 5113. Up to 1863 conditions per place. [2024-02-02 09:22:36,019 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 75 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-02-02 09:22:36,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 134 transitions, 445 flow [2024-02-02 09:22:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2024-02-02 09:22:36,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6788617886178862 [2024-02-02 09:22:36,021 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 242 flow. Second operand 4 states and 334 transitions. [2024-02-02 09:22:36,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 134 transitions, 445 flow [2024-02-02 09:22:36,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 134 transitions, 437 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:22:36,023 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 242 flow [2024-02-02 09:22:36,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-02-02 09:22:36,024 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -4 predicate places. [2024-02-02 09:22:36,024 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 242 flow [2024-02-02 09:22:36,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:36,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:36,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:36,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:22:36,025 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:36,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash -185302406, now seen corresponding path program 1 times [2024-02-02 09:22:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:36,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121869000] [2024-02-02 09:22:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:36,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:36,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121869000] [2024-02-02 09:22:36,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121869000] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:36,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:36,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969793540] [2024-02-02 09:22:36,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:36,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:36,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 123 [2024-02-02 09:22:36,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:36,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:36,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 123 [2024-02-02 09:22:36,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:36,445 INFO L124 PetriNetUnfolderBase]: 1209/3387 cut-off events. [2024-02-02 09:22:36,446 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-02-02 09:22:36,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5494 conditions, 3387 events. 1209/3387 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 25711 event pairs, 246 based on Foata normal form. 50/2934 useless extension candidates. Maximal degree in co-relation 5061. Up to 1902 conditions per place. [2024-02-02 09:22:36,462 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 54 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-02-02 09:22:36,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 117 transitions, 370 flow [2024-02-02 09:22:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2024-02-02 09:22:36,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6849593495934959 [2024-02-02 09:22:36,463 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 242 flow. Second operand 4 states and 337 transitions. [2024-02-02 09:22:36,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 117 transitions, 370 flow [2024-02-02 09:22:36,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 117 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:22:36,465 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 236 flow [2024-02-02 09:22:36,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2024-02-02 09:22:36,466 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -6 predicate places. [2024-02-02 09:22:36,466 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 236 flow [2024-02-02 09:22:36,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:36,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:36,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:36,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:22:36,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:36,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:36,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1981935107, now seen corresponding path program 1 times [2024-02-02 09:22:36,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:36,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319091280] [2024-02-02 09:22:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:36,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:36,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:36,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319091280] [2024-02-02 09:22:36,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319091280] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:36,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:36,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:36,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987378394] [2024-02-02 09:22:36,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:36,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:36,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-02-02 09:22:36,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:36,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:36,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-02-02 09:22:36,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:36,915 INFO L124 PetriNetUnfolderBase]: 1756/4191 cut-off events. [2024-02-02 09:22:36,915 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-02 09:22:36,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7209 conditions, 4191 events. 1756/4191 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 30822 event pairs, 574 based on Foata normal form. 16/3798 useless extension candidates. Maximal degree in co-relation 6038. Up to 1857 conditions per place. [2024-02-02 09:22:36,928 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 95 selfloop transitions, 3 changer transitions 0/152 dead transitions. [2024-02-02 09:22:36,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 152 transitions, 524 flow [2024-02-02 09:22:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2024-02-02 09:22:36,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7154471544715447 [2024-02-02 09:22:36,930 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 236 flow. Second operand 4 states and 352 transitions. [2024-02-02 09:22:36,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 152 transitions, 524 flow [2024-02-02 09:22:36,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 152 transitions, 521 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:36,932 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 249 flow [2024-02-02 09:22:36,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2024-02-02 09:22:36,933 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -4 predicate places. [2024-02-02 09:22:36,933 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 249 flow [2024-02-02 09:22:36,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:36,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:36,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:36,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:22:36,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:36,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:36,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1983925629, now seen corresponding path program 1 times [2024-02-02 09:22:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:36,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134542259] [2024-02-02 09:22:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:36,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:36,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134542259] [2024-02-02 09:22:36,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134542259] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:36,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:36,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:36,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579122553] [2024-02-02 09:22:36,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:36,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:36,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:36,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:36,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:37,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 123 [2024-02-02 09:22:37,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:37,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:37,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 123 [2024-02-02 09:22:37,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:37,350 INFO L124 PetriNetUnfolderBase]: 1251/3452 cut-off events. [2024-02-02 09:22:37,350 INFO L125 PetriNetUnfolderBase]: For 157/195 co-relation queries the response was YES. [2024-02-02 09:22:37,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5736 conditions, 3452 events. 1251/3452 cut-off events. For 157/195 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 26205 event pairs, 79 based on Foata normal form. 134/3106 useless extension candidates. Maximal degree in co-relation 5578. Up to 1736 conditions per place. [2024-02-02 09:22:37,365 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 87 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2024-02-02 09:22:37,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 148 transitions, 536 flow [2024-02-02 09:22:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2024-02-02 09:22:37,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.741869918699187 [2024-02-02 09:22:37,367 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 249 flow. Second operand 4 states and 365 transitions. [2024-02-02 09:22:37,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 148 transitions, 536 flow [2024-02-02 09:22:37,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 148 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:37,370 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 245 flow [2024-02-02 09:22:37,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=112, PETRI_TRANSITIONS=107} [2024-02-02 09:22:37,372 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -5 predicate places. [2024-02-02 09:22:37,372 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 245 flow [2024-02-02 09:22:37,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:37,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:37,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:37,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:22:37,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:37,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:37,374 INFO L85 PathProgramCache]: Analyzing trace with hash 412969606, now seen corresponding path program 1 times [2024-02-02 09:22:37,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:37,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022995494] [2024-02-02 09:22:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:37,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:37,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:37,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022995494] [2024-02-02 09:22:37,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022995494] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:37,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:37,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:37,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666224664] [2024-02-02 09:22:37,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:37,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:37,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:37,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:37,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-02-02 09:22:37,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 107 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:37,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:37,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-02-02 09:22:37,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:38,170 INFO L124 PetriNetUnfolderBase]: 2962/7025 cut-off events. [2024-02-02 09:22:38,170 INFO L125 PetriNetUnfolderBase]: For 372/440 co-relation queries the response was YES. [2024-02-02 09:22:38,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12436 conditions, 7025 events. 2962/7025 cut-off events. For 372/440 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 56815 event pairs, 1435 based on Foata normal form. 96/6468 useless extension candidates. Maximal degree in co-relation 12157. Up to 2764 conditions per place. [2024-02-02 09:22:38,197 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 112 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2024-02-02 09:22:38,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 621 flow [2024-02-02 09:22:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:38,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2024-02-02 09:22:38,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7378048780487805 [2024-02-02 09:22:38,199 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 245 flow. Second operand 4 states and 363 transitions. [2024-02-02 09:22:38,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 621 flow [2024-02-02 09:22:38,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 167 transitions, 618 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:38,202 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 258 flow [2024-02-02 09:22:38,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=114, PETRI_TRANSITIONS=108} [2024-02-02 09:22:38,203 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2024-02-02 09:22:38,204 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 258 flow [2024-02-02 09:22:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:38,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:38,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:22:38,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:38,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash -912792453, now seen corresponding path program 1 times [2024-02-02 09:22:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202848703] [2024-02-02 09:22:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:38,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:38,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202848703] [2024-02-02 09:22:38,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202848703] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:38,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:38,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:22:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561350030] [2024-02-02 09:22:38,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:38,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:22:38,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:22:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:22:38,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-02-02 09:22:38,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 108 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:38,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:38,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-02-02 09:22:38,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:40,093 INFO L124 PetriNetUnfolderBase]: 8285/17463 cut-off events. [2024-02-02 09:22:40,093 INFO L125 PetriNetUnfolderBase]: For 1393/1688 co-relation queries the response was YES. [2024-02-02 09:22:40,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33460 conditions, 17463 events. 8285/17463 cut-off events. For 1393/1688 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 144845 event pairs, 1066 based on Foata normal form. 321/16350 useless extension candidates. Maximal degree in co-relation 32539. Up to 5325 conditions per place. [2024-02-02 09:22:40,231 INFO L140 encePairwiseOnDemand]: 103/123 looper letters, 214 selfloop transitions, 13 changer transitions 0/266 dead transitions. [2024-02-02 09:22:40,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 266 transitions, 1114 flow [2024-02-02 09:22:40,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:22:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:22:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2024-02-02 09:22:40,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6562137049941928 [2024-02-02 09:22:40,241 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 258 flow. Second operand 7 states and 565 transitions. [2024-02-02 09:22:40,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 266 transitions, 1114 flow [2024-02-02 09:22:40,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 266 transitions, 1095 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:40,248 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 359 flow [2024-02-02 09:22:40,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2024-02-02 09:22:40,251 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 5 predicate places. [2024-02-02 09:22:40,251 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 359 flow [2024-02-02 09:22:40,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:40,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:40,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:40,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:22:40,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:40,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:40,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1991812296, now seen corresponding path program 1 times [2024-02-02 09:22:40,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:40,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971834833] [2024-02-02 09:22:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:40,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:40,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:40,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971834833] [2024-02-02 09:22:40,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971834833] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:40,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:40,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:22:40,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770991070] [2024-02-02 09:22:40,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:40,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:22:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:22:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:22:40,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2024-02-02 09:22:40,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 52.285714285714285) internal successors, (366), 7 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:40,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:40,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2024-02-02 09:22:40,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:42,757 INFO L124 PetriNetUnfolderBase]: 8796/19656 cut-off events. [2024-02-02 09:22:42,758 INFO L125 PetriNetUnfolderBase]: For 4663/4796 co-relation queries the response was YES. [2024-02-02 09:22:42,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40634 conditions, 19656 events. 8796/19656 cut-off events. For 4663/4796 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 171142 event pairs, 3101 based on Foata normal form. 69/18555 useless extension candidates. Maximal degree in co-relation 39867. Up to 12882 conditions per place. [2024-02-02 09:22:42,844 INFO L140 encePairwiseOnDemand]: 115/123 looper letters, 135 selfloop transitions, 8 changer transitions 0/184 dead transitions. [2024-02-02 09:22:42,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 184 transitions, 820 flow [2024-02-02 09:22:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:22:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:22:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 434 transitions. [2024-02-02 09:22:42,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5880758807588076 [2024-02-02 09:22:42,846 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 359 flow. Second operand 6 states and 434 transitions. [2024-02-02 09:22:42,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 184 transitions, 820 flow [2024-02-02 09:22:42,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 184 transitions, 812 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-02-02 09:22:42,853 INFO L231 Difference]: Finished difference. Result has 129 places, 122 transitions, 410 flow [2024-02-02 09:22:42,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=129, PETRI_TRANSITIONS=122} [2024-02-02 09:22:42,854 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 12 predicate places. [2024-02-02 09:22:42,854 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 122 transitions, 410 flow [2024-02-02 09:22:42,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.285714285714285) internal successors, (366), 7 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:42,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:42,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:42,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:22:42,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:42,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:42,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1561450237, now seen corresponding path program 1 times [2024-02-02 09:22:42,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:42,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099367793] [2024-02-02 09:22:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:42,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:43,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:43,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099367793] [2024-02-02 09:22:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099367793] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:43,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:43,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:22:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149599201] [2024-02-02 09:22:43,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:43,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:22:43,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:22:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:22:43,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 123 [2024-02-02 09:22:43,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 122 transitions, 410 flow. Second operand has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 7 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:43,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:43,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 123 [2024-02-02 09:22:43,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:44,946 INFO L124 PetriNetUnfolderBase]: 7758/16680 cut-off events. [2024-02-02 09:22:44,946 INFO L125 PetriNetUnfolderBase]: For 5521/5736 co-relation queries the response was YES. [2024-02-02 09:22:44,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35912 conditions, 16680 events. 7758/16680 cut-off events. For 5521/5736 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 139690 event pairs, 782 based on Foata normal form. 23/14905 useless extension candidates. Maximal degree in co-relation 34998. Up to 4897 conditions per place. [2024-02-02 09:22:45,088 INFO L140 encePairwiseOnDemand]: 106/123 looper letters, 208 selfloop transitions, 14 changer transitions 0/266 dead transitions. [2024-02-02 09:22:45,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 266 transitions, 1277 flow [2024-02-02 09:22:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:22:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:22:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 593 transitions. [2024-02-02 09:22:45,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6887340301974448 [2024-02-02 09:22:45,109 INFO L175 Difference]: Start difference. First operand has 129 places, 122 transitions, 410 flow. Second operand 7 states and 593 transitions. [2024-02-02 09:22:45,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 266 transitions, 1277 flow [2024-02-02 09:22:45,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 266 transitions, 1267 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:22:45,117 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 456 flow [2024-02-02 09:22:45,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=456, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-02-02 09:22:45,121 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 17 predicate places. [2024-02-02 09:22:45,121 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 456 flow [2024-02-02 09:22:45,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 7 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:45,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:45,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:45,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:22:45,122 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:45,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:45,123 INFO L85 PathProgramCache]: Analyzing trace with hash 513941324, now seen corresponding path program 1 times [2024-02-02 09:22:45,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:45,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595380987] [2024-02-02 09:22:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:45,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:45,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:45,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595380987] [2024-02-02 09:22:45,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595380987] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:45,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:45,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:22:45,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699487410] [2024-02-02 09:22:45,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:22:45,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:22:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:22:45,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 123 [2024-02-02 09:22:45,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 456 flow. Second operand has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:45,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:45,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 123 [2024-02-02 09:22:45,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:46,450 INFO L124 PetriNetUnfolderBase]: 4933/12844 cut-off events. [2024-02-02 09:22:46,450 INFO L125 PetriNetUnfolderBase]: For 3626/3797 co-relation queries the response was YES. [2024-02-02 09:22:46,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26230 conditions, 12844 events. 4933/12844 cut-off events. For 3626/3797 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 119132 event pairs, 1822 based on Foata normal form. 48/12073 useless extension candidates. Maximal degree in co-relation 25645. Up to 7521 conditions per place. [2024-02-02 09:22:46,528 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 74 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2024-02-02 09:22:46,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 655 flow [2024-02-02 09:22:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:22:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:22:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2024-02-02 09:22:46,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-02-02 09:22:46,532 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 456 flow. Second operand 6 states and 477 transitions. [2024-02-02 09:22:46,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 655 flow [2024-02-02 09:22:46,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 629 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:22:46,542 INFO L231 Difference]: Finished difference. Result has 136 places, 125 transitions, 446 flow [2024-02-02 09:22:46,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=136, PETRI_TRANSITIONS=125} [2024-02-02 09:22:46,543 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2024-02-02 09:22:46,543 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 125 transitions, 446 flow [2024-02-02 09:22:46,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.2) internal successors, (361), 5 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:46,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:46,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:46,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 09:22:46,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:46,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash -296406091, now seen corresponding path program 1 times [2024-02-02 09:22:46,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:46,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129245941] [2024-02-02 09:22:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:46,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:46,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:46,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129245941] [2024-02-02 09:22:46,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129245941] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:22:46,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31398922] [2024-02-02 09:22:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:46,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:22:46,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:22:46,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:22:46,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-02 09:22:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:46,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-02 09:22:46,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:22:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:46,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:22:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:47,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31398922] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:22:47,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:22:47,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-02-02 09:22:47,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903753310] [2024-02-02 09:22:47,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:22:47,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:22:47,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:47,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:22:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:22:47,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 123 [2024-02-02 09:22:47,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 65.9) internal successors, (659), 10 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:47,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:47,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 123 [2024-02-02 09:22:47,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:50,292 INFO L124 PetriNetUnfolderBase]: 11205/25595 cut-off events. [2024-02-02 09:22:50,292 INFO L125 PetriNetUnfolderBase]: For 6819/7409 co-relation queries the response was YES. [2024-02-02 09:22:50,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54610 conditions, 25595 events. 11205/25595 cut-off events. For 6819/7409 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 238266 event pairs, 1684 based on Foata normal form. 882/24973 useless extension candidates. Maximal degree in co-relation 53874. Up to 4220 conditions per place. [2024-02-02 09:22:50,533 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 298 selfloop transitions, 10 changer transitions 0/360 dead transitions. [2024-02-02 09:22:50,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 360 transitions, 1942 flow [2024-02-02 09:22:50,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:22:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:22:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 730 transitions. [2024-02-02 09:22:50,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.741869918699187 [2024-02-02 09:22:50,535 INFO L175 Difference]: Start difference. First operand has 136 places, 125 transitions, 446 flow. Second operand 8 states and 730 transitions. [2024-02-02 09:22:50,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 360 transitions, 1942 flow [2024-02-02 09:22:50,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 360 transitions, 1937 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:22:50,564 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 485 flow [2024-02-02 09:22:50,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=485, PETRI_PLACES=143, PETRI_TRANSITIONS=127} [2024-02-02 09:22:50,565 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 26 predicate places. [2024-02-02 09:22:50,565 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 485 flow [2024-02-02 09:22:50,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.9) internal successors, (659), 10 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:50,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:50,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:50,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-02 09:22:50,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-02 09:22:50,778 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:50,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:50,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1278195566, now seen corresponding path program 1 times [2024-02-02 09:22:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:50,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544085969] [2024-02-02 09:22:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:50,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:50,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-02 09:22:50,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432962232] [2024-02-02 09:22:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:50,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:22:50,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:22:50,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:22:50,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-02 09:22:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:50,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-02 09:22:50,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:22:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:51,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-02 09:22:51,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:51,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544085969] [2024-02-02 09:22:51,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-02 09:22:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432962232] [2024-02-02 09:22:51,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432962232] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:51,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:51,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:22:51,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643039598] [2024-02-02 09:22:51,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:51,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:51,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:51,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:51,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:51,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 123 [2024-02-02 09:22:51,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 127 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:51,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:51,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 123 [2024-02-02 09:22:51,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:53,288 INFO L124 PetriNetUnfolderBase]: 8859/22942 cut-off events. [2024-02-02 09:22:53,289 INFO L125 PetriNetUnfolderBase]: For 9474/9620 co-relation queries the response was YES. [2024-02-02 09:22:53,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48055 conditions, 22942 events. 8859/22942 cut-off events. For 9474/9620 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 230424 event pairs, 3251 based on Foata normal form. 48/21287 useless extension candidates. Maximal degree in co-relation 47591. Up to 13330 conditions per place. [2024-02-02 09:22:53,535 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 92 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2024-02-02 09:22:53,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 152 transitions, 811 flow [2024-02-02 09:22:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2024-02-02 09:22:53,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2024-02-02 09:22:53,537 INFO L175 Difference]: Start difference. First operand has 143 places, 127 transitions, 485 flow. Second operand 4 states and 348 transitions. [2024-02-02 09:22:53,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 152 transitions, 811 flow [2024-02-02 09:22:53,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 152 transitions, 777 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-02-02 09:22:53,563 INFO L231 Difference]: Finished difference. Result has 142 places, 126 transitions, 474 flow [2024-02-02 09:22:53,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=474, PETRI_PLACES=142, PETRI_TRANSITIONS=126} [2024-02-02 09:22:53,564 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 25 predicate places. [2024-02-02 09:22:53,564 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 126 transitions, 474 flow [2024-02-02 09:22:53,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:53,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:53,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:53,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-02 09:22:53,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-02 09:22:53,777 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:53,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash 455542531, now seen corresponding path program 1 times [2024-02-02 09:22:53,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:53,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554701424] [2024-02-02 09:22:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:53,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:53,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-02 09:22:53,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105197000] [2024-02-02 09:22:53,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:53,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:22:53,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:22:53,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:22:53,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-02 09:22:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:53,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-02 09:22:53,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:22:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:53,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-02 09:22:53,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:53,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554701424] [2024-02-02 09:22:53,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-02 09:22:53,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105197000] [2024-02-02 09:22:53,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105197000] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:53,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:53,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:22:53,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554357015] [2024-02-02 09:22:53,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:53,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:22:53,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:53,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:22:53,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:22:54,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 123 [2024-02-02 09:22:54,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 126 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:54,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:54,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 123 [2024-02-02 09:22:54,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:56,561 INFO L124 PetriNetUnfolderBase]: 9322/25000 cut-off events. [2024-02-02 09:22:56,561 INFO L125 PetriNetUnfolderBase]: For 8821/8977 co-relation queries the response was YES. [2024-02-02 09:22:56,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53086 conditions, 25000 events. 9322/25000 cut-off events. For 8821/8977 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 258431 event pairs, 2975 based on Foata normal form. 44/23813 useless extension candidates. Maximal degree in co-relation 52631. Up to 6976 conditions per place. [2024-02-02 09:22:56,824 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 165 selfloop transitions, 10 changer transitions 0/236 dead transitions. [2024-02-02 09:22:56,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 236 transitions, 1298 flow [2024-02-02 09:22:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:22:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:22:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 558 transitions. [2024-02-02 09:22:56,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7560975609756098 [2024-02-02 09:22:56,826 INFO L175 Difference]: Start difference. First operand has 142 places, 126 transitions, 474 flow. Second operand 6 states and 558 transitions. [2024-02-02 09:22:56,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 236 transitions, 1298 flow [2024-02-02 09:22:56,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 236 transitions, 1296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:22:56,851 INFO L231 Difference]: Finished difference. Result has 148 places, 129 transitions, 514 flow [2024-02-02 09:22:56,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2024-02-02 09:22:56,852 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2024-02-02 09:22:56,852 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 514 flow [2024-02-02 09:22:56,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:56,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:56,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:56,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-02 09:22:57,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:22:57,065 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:22:57,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash 219519289, now seen corresponding path program 1 times [2024-02-02 09:22:57,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:57,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655133966] [2024-02-02 09:22:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:57,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:57,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:57,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655133966] [2024-02-02 09:22:57,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655133966] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:22:57,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258814401] [2024-02-02 09:22:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:57,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:22:57,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:22:57,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:22:57,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-02 09:22:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:57,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-02 09:22:57,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:22:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:57,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:22:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:58,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258814401] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:22:58,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:22:58,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-02-02 09:22:58,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822902944] [2024-02-02 09:22:58,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:22:58,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-02-02 09:22:58,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:58,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-02-02 09:22:58,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2024-02-02 09:22:59,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 123 [2024-02-02 09:22:59,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 514 flow. Second operand has 22 states, 22 states have (on average 50.27272727272727) internal successors, (1106), 22 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:22:59,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:59,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 123 [2024-02-02 09:22:59,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:23:12,087 INFO L124 PetriNetUnfolderBase]: 44201/89207 cut-off events. [2024-02-02 09:23:12,087 INFO L125 PetriNetUnfolderBase]: For 46745/47615 co-relation queries the response was YES. [2024-02-02 09:23:12,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217838 conditions, 89207 events. 44201/89207 cut-off events. For 46745/47615 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 877416 event pairs, 3021 based on Foata normal form. 3676/90767 useless extension candidates. Maximal degree in co-relation 217040. Up to 13672 conditions per place. [2024-02-02 09:23:13,048 INFO L140 encePairwiseOnDemand]: 92/123 looper letters, 571 selfloop transitions, 115 changer transitions 0/723 dead transitions. [2024-02-02 09:23:13,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 723 transitions, 4182 flow [2024-02-02 09:23:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-02-02 09:23:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-02-02 09:23:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1982 transitions. [2024-02-02 09:23:13,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5556490047659097 [2024-02-02 09:23:13,076 INFO L175 Difference]: Start difference. First operand has 148 places, 129 transitions, 514 flow. Second operand 29 states and 1982 transitions. [2024-02-02 09:23:13,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 723 transitions, 4182 flow [2024-02-02 09:23:13,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 723 transitions, 4124 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:23:13,611 INFO L231 Difference]: Finished difference. Result has 196 places, 229 transitions, 1620 flow [2024-02-02 09:23:13,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1620, PETRI_PLACES=196, PETRI_TRANSITIONS=229} [2024-02-02 09:23:13,613 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 79 predicate places. [2024-02-02 09:23:13,613 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 229 transitions, 1620 flow [2024-02-02 09:23:13,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.27272727272727) internal successors, (1106), 22 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:23:13,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:23:13,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:23:13,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-02-02 09:23:13,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-02 09:23:13,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err15ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-02-02 09:23:13,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:23:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1029495618, now seen corresponding path program 1 times [2024-02-02 09:23:13,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:23:13,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821896843] [2024-02-02 09:23:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:23:13,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:23:13,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-02 09:23:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782240767] [2024-02-02 09:23:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:23:13,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:23:13,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:23:13,839 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:23:13,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-02 09:23:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:23:13,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-02 09:23:13,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:23:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:23:14,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-02 09:23:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:23:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821896843] [2024-02-02 09:23:14,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-02 09:23:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782240767] [2024-02-02 09:23:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782240767] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:23:14,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:23:14,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:23:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245800207] [2024-02-02 09:23:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:23:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:23:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:23:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:23:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:23:14,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 123 [2024-02-02 09:23:14,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 229 transitions, 1620 flow. Second operand has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 7 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:23:14,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:23:14,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 123 [2024-02-02 09:23:14,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand