./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 3d25acf6 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-3d25acf-m [2024-01-30 14:26:28,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:26:28,070 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:26:28,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:26:28,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:26:28,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:26:28,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:26:28,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:26:28,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:26:28,121 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:26:28,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:26:28,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:26:28,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:26:28,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:26:28,185 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:26:28,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:26:28,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:26:28,186 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:26:28,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:26:28,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:26:28,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:26:28,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:26:28,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:26:28,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:26:28,187 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:26:28,188 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:26:28,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:26:28,188 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:26:28,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:26:28,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:26:28,189 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:26:28,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:26:28,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:26:28,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:26:28,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:26:28,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:26:28,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:26:28,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:26:28,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:26:28,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:26:28,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:26:28,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:26:28,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:26:28,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:26:28,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:26:28,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:26:28,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:26:28,424 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:26:28,425 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:26:28,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-01-30 14:26:29,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:26:29,735 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:26:29,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-01-30 14:26:29,747 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b2f0933/6d134e7ac8f34f9385ceb0332b4d0a4f/FLAG9b1901952 [2024-01-30 14:26:29,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b2f0933/6d134e7ac8f34f9385ceb0332b4d0a4f [2024-01-30 14:26:29,765 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:26:29,765 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:26:29,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_ok.yml/witness.yml [2024-01-30 14:26:29,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:26:29,938 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:26:29,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:26:29,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:26:29,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:26:29,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:26:29" (1/2) ... [2024-01-30 14:26:29,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4376b510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:29, skipping insertion in model container [2024-01-30 14:26:29,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:26:29" (1/2) ... [2024-01-30 14:26:29,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@82ad93c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:26:29, skipping insertion in model container [2024-01-30 14:26:29,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:26:29" (2/2) ... [2024-01-30 14:26:29,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4376b510 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:29, skipping insertion in model container [2024-01-30 14:26:29,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:26:29" (2/2) ... [2024-01-30 14:26:29,949 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:26:30,094 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:26:30,096 INFO L98 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)) [2024-01-30 14:26:30,097 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] (((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-30 14:26:30,097 INFO L98 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) [2024-01-30 14:26:30,097 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] ((((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (value == 0)) && (max == 10) [2024-01-30 14:26:30,097 INFO L98 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)) [2024-01-30 14:26:30,098 INFO L98 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)) [2024-01-30 14:26:30,098 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L704] (((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-30 14:26:30,098 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-30 14:26:30,099 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L719] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-30 14:26:30,099 INFO L98 nessWitnessExtractor]: Location invariant before [L755-L755] (i == 7) && ((unsigned long )arg == 0UL) [2024-01-30 14:26:30,099 INFO L98 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) [2024-01-30 14:26:30,099 INFO L98 nessWitnessExtractor]: Location invariant before [L759-L759] ((send == (_Bool)0) && (receive == (_Bool)0)) && (value == 0) [2024-01-30 14:26:30,099 INFO L98 nessWitnessExtractor]: Location invariant before [L763-L763] ((send == (_Bool)1) && (receive == (_Bool)0)) && (value == 0) [2024-01-30 14:26:30,099 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-30 14:26:30,100 INFO L98 nessWitnessExtractor]: Location invariant before [L760-L760] ((send == (_Bool)0) && (receive == (_Bool)0)) && (value == 0) [2024-01-30 14:26:30,100 INFO L98 nessWitnessExtractor]: Loop invariant at [L725-L737] (unsigned long )arg == 0UL [2024-01-30 14:26:30,100 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] ((send == (_Bool)1) && (receive == (_Bool)0)) && (value == 0) [2024-01-30 14:26:30,100 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] ((send == (_Bool)0) && (receive == (_Bool)0)) && (value == 0) [2024-01-30 14:26:30,100 INFO L98 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)) [2024-01-30 14:26:30,101 INFO L98 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)) [2024-01-30 14:26:30,101 INFO L98 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)) [2024-01-30 14:26:30,101 INFO L98 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)) [2024-01-30 14:26:30,102 INFO L98 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)) [2024-01-30 14:26:30,102 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-30 14:26:30,102 INFO L98 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)) [2024-01-30 14:26:30,102 INFO L98 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)) [2024-01-30 14:26:30,102 INFO L98 nessWitnessExtractor]: Loop invariant at [L743-L754] (unsigned long )arg == 0UL [2024-01-30 14:26:30,102 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-30 14:26:30,103 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-30 14:26:30,103 INFO L98 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) [2024-01-30 14:26:30,103 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] ((((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (value == 0)) && (max == 10) [2024-01-30 14:26:30,103 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] (((0 <= value) && (value <= 6)) && (receive == (_Bool)1)) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-30 14:26:30,103 INFO L98 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) [2024-01-30 14:26:30,104 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L714] (((((0 <= value) && (0 <= b)) && (value <= 6)) && (b <= 6)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-30 14:26:30,104 INFO L98 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) [2024-01-30 14:26:30,104 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (i == 7) && ((unsigned long )arg == 0UL) [2024-01-30 14:26:30,104 INFO L98 nessWitnessExtractor]: Location invariant after [L689-L693] ((((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (value == 0)) && (max == 10) [2024-01-30 14:26:30,151 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:26:30,468 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] [2024-01-30 14:26:30,480 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] [2024-01-30 14:26:30,487 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] [2024-01-30 14:26:30,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:26:30,513 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-01-30 14:26:30,579 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 [2024-01-30 14:26:30,589 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 [2024-01-30 14:26:30,599 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 [2024-01-30 14:26:30,635 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 [2024-01-30 14:26:30,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:26:30,701 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:26:30,701 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30 WrapperNode [2024-01-30 14:26:30,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:26:30,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:26:30,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:26:30,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:26:30,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,774 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 186 [2024-01-30 14:26:30,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:26:30,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:26:30,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:26:30,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:26:30,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,792 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,813 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]. [2024-01-30 14:26:30,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,813 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:26:30,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:26:30,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:26:30,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:26:30,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (1/1) ... [2024-01-30 14:26:30,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:26:30,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:26:30,904 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) [2024-01-30 14:26:30,956 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 [2024-01-30 14:26:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:26:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:26:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:26:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:26:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:26:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-30 14:26:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-01-30 14:26:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-01-30 14:26:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-01-30 14:26:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-01-30 14:26:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:26:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:26:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:26:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:26:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:26:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-30 14:26:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:26:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:26:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:26:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:26:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-01-30 14:26:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-01-30 14:26:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-01-30 14:26:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-01-30 14:26:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-01-30 14:26:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-01-30 14:26:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:26:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:26:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:26:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:26:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:26:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-30 14:26:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:26:30,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:26:30,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:26:30,988 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:26:31,203 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:26:31,205 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:26:31,628 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:26:31,629 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:26:31,762 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:26:31,763 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-30 14:26:31,764 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:26:31 BoogieIcfgContainer [2024-01-30 14:26:31,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:26:31,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:26:31,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:26:31,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:26:31,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:26:29" (1/4) ... [2024-01-30 14:26:31,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150033ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:26:31, skipping insertion in model container [2024-01-30 14:26:31,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:26:29" (2/4) ... [2024-01-30 14:26:31,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150033ea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:26:31, skipping insertion in model container [2024-01-30 14:26:31,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:26:30" (3/4) ... [2024-01-30 14:26:31,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150033ea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:26:31, skipping insertion in model container [2024-01-30 14:26:31,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:26:31" (4/4) ... [2024-01-30 14:26:31,772 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-01-30 14:26:31,787 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:26:31,787 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2024-01-30 14:26:31,787 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:26:31,878 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-30 14:26:31,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 123 transitions, 260 flow [2024-01-30 14:26:32,007 INFO L124 PetriNetUnfolderBase]: 9/121 cut-off events. [2024-01-30 14:26:32,008 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-30 14:26:32,012 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. [2024-01-30 14:26:32,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 123 transitions, 260 flow [2024-01-30 14:26:32,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 119 transitions, 247 flow [2024-01-30 14:26:32,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:26:32,039 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;@1c0a616c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:26:32,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2024-01-30 14:26:32,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:26:32,043 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:26:32,043 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:26:32,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:32,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:26:32,045 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)] === [2024-01-30 14:26:32,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash 14828, now seen corresponding path program 1 times [2024-01-30 14:26:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996930176] [2024-01-30 14:26:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:32,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:32,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996930176] [2024-01-30 14:26:32,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996930176] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:32,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:32,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:26:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233993475] [2024-01-30 14:26:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:32,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:26:32,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:26:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:26:32,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 123 [2024-01-30 14:26:32,528 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) [2024-01-30 14:26:32,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:32,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 123 [2024-01-30 14:26:32,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:32,979 INFO L124 PetriNetUnfolderBase]: 1437/3395 cut-off events. [2024-01-30 14:26:32,980 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-01-30 14:26:32,987 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. [2024-01-30 14:26:33,005 INFO L140 encePairwiseOnDemand]: 115/123 looper letters, 51 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2024-01-30 14:26:33,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 341 flow [2024-01-30 14:26:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:26:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:26:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2024-01-30 14:26:33,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6639566395663956 [2024-01-30 14:26:33,026 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 247 flow. Second operand 3 states and 245 transitions. [2024-01-30 14:26:33,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 341 flow [2024-01-30 14:26:33,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:26:33,034 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 234 flow [2024-01-30 14:26:33,035 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} [2024-01-30 14:26:33,038 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -4 predicate places. [2024-01-30 14:26:33,038 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 234 flow [2024-01-30 14:26:33,038 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) [2024-01-30 14:26:33,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:33,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:26:33,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:26:33,039 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)] === [2024-01-30 14:26:33,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:33,040 INFO L85 PathProgramCache]: Analyzing trace with hash 14265498, now seen corresponding path program 1 times [2024-01-30 14:26:33,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:33,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442390231] [2024-01-30 14:26:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:33,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442390231] [2024-01-30 14:26:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442390231] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:33,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:33,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:33,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335980042] [2024-01-30 14:26:33,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:33,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:26:33,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:33,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:26:33,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:26:33,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 123 [2024-01-30 14:26:33,247 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) [2024-01-30 14:26:33,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:33,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 123 [2024-01-30 14:26:33,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:33,813 INFO L124 PetriNetUnfolderBase]: 2548/6061 cut-off events. [2024-01-30 14:26:33,814 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-01-30 14:26:33,820 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. [2024-01-30 14:26:33,838 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 89 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2024-01-30 14:26:33,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 152 transitions, 503 flow [2024-01-30 14:26:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:26:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:26:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 396 transitions. [2024-01-30 14:26:33,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439024390243903 [2024-01-30 14:26:33,840 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 234 flow. Second operand 5 states and 396 transitions. [2024-01-30 14:26:33,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 152 transitions, 503 flow [2024-01-30 14:26:33,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 152 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:33,843 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 242 flow [2024-01-30 14:26:33,843 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} [2024-01-30 14:26:33,844 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2024-01-30 14:26:33,844 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 242 flow [2024-01-30 14:26:33,844 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) [2024-01-30 14:26:33,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:33,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:33,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:26:33,845 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)] === [2024-01-30 14:26:33,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash -217841028, now seen corresponding path program 1 times [2024-01-30 14:26:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:33,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491165308] [2024-01-30 14:26:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:33,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:33,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:33,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491165308] [2024-01-30 14:26:33,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491165308] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:33,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:33,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:33,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099864953] [2024-01-30 14:26:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:33,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:26:33,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:33,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:26:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:26:34,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-01-30 14:26:34,040 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) [2024-01-30 14:26:34,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:34,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-01-30 14:26:34,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:34,460 INFO L124 PetriNetUnfolderBase]: 1570/3954 cut-off events. [2024-01-30 14:26:34,461 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-01-30 14:26:34,466 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. [2024-01-30 14:26:34,481 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 75 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-01-30 14:26:34,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 134 transitions, 445 flow [2024-01-30 14:26:34,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2024-01-30 14:26:34,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6788617886178862 [2024-01-30 14:26:34,483 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 242 flow. Second operand 4 states and 334 transitions. [2024-01-30 14:26:34,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 134 transitions, 445 flow [2024-01-30 14:26:34,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 134 transitions, 437 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:26:34,485 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 242 flow [2024-01-30 14:26:34,485 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} [2024-01-30 14:26:34,486 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -4 predicate places. [2024-01-30 14:26:34,486 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 242 flow [2024-01-30 14:26:34,486 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) [2024-01-30 14:26:34,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:34,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:34,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:26:34,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:34,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash -185302406, now seen corresponding path program 1 times [2024-01-30 14:26:34,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:34,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834410400] [2024-01-30 14:26:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:34,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:34,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834410400] [2024-01-30 14:26:34,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834410400] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:34,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:34,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:34,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638996632] [2024-01-30 14:26:34,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:34,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:34,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:34,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:34,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:34,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 123 [2024-01-30 14:26:34,653 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) [2024-01-30 14:26:34,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:34,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 123 [2024-01-30 14:26:34,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:34,961 INFO L124 PetriNetUnfolderBase]: 1209/3387 cut-off events. [2024-01-30 14:26:34,962 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-01-30 14:26:34,968 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. [2024-01-30 14:26:34,987 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 54 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-01-30 14:26:34,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 117 transitions, 370 flow [2024-01-30 14:26:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2024-01-30 14:26:34,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6849593495934959 [2024-01-30 14:26:34,989 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 242 flow. Second operand 4 states and 337 transitions. [2024-01-30 14:26:34,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 117 transitions, 370 flow [2024-01-30 14:26:34,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 117 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:26:34,992 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 236 flow [2024-01-30 14:26:34,993 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} [2024-01-30 14:26:34,994 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -6 predicate places. [2024-01-30 14:26:34,994 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 236 flow [2024-01-30 14:26:34,995 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) [2024-01-30 14:26:34,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:34,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:34,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:26:34,995 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:34,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1981935107, now seen corresponding path program 1 times [2024-01-30 14:26:34,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:34,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232541551] [2024-01-30 14:26:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:34,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232541551] [2024-01-30 14:26:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232541551] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:35,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:35,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:35,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37059231] [2024-01-30 14:26:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:35,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:35,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-01-30 14:26:35,144 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) [2024-01-30 14:26:35,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:35,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-01-30 14:26:35,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:35,555 INFO L124 PetriNetUnfolderBase]: 1756/4191 cut-off events. [2024-01-30 14:26:35,556 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-30 14:26:35,560 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. [2024-01-30 14:26:35,569 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 95 selfloop transitions, 3 changer transitions 0/152 dead transitions. [2024-01-30 14:26:35,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 152 transitions, 524 flow [2024-01-30 14:26:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2024-01-30 14:26:35,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7154471544715447 [2024-01-30 14:26:35,571 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 236 flow. Second operand 4 states and 352 transitions. [2024-01-30 14:26:35,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 152 transitions, 524 flow [2024-01-30 14:26:35,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 152 transitions, 521 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:35,573 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 249 flow [2024-01-30 14:26:35,573 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} [2024-01-30 14:26:35,574 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -4 predicate places. [2024-01-30 14:26:35,574 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 249 flow [2024-01-30 14:26:35,574 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) [2024-01-30 14:26:35,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:35,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:35,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:26:35,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:35,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1983925629, now seen corresponding path program 1 times [2024-01-30 14:26:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:35,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185025898] [2024-01-30 14:26:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:35,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:35,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:35,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185025898] [2024-01-30 14:26:35,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185025898] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:35,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:35,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:35,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862541676] [2024-01-30 14:26:35,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:35,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:35,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:35,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:35,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:35,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 123 [2024-01-30 14:26:35,683 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) [2024-01-30 14:26:35,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:35,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 123 [2024-01-30 14:26:35,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:36,110 INFO L124 PetriNetUnfolderBase]: 1251/3452 cut-off events. [2024-01-30 14:26:36,111 INFO L125 PetriNetUnfolderBase]: For 157/195 co-relation queries the response was YES. [2024-01-30 14:26:36,118 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. [2024-01-30 14:26:36,129 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 87 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2024-01-30 14:26:36,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 148 transitions, 536 flow [2024-01-30 14:26:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:36,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2024-01-30 14:26:36,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.741869918699187 [2024-01-30 14:26:36,131 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 249 flow. Second operand 4 states and 365 transitions. [2024-01-30 14:26:36,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 148 transitions, 536 flow [2024-01-30 14:26:36,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 148 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:36,134 INFO L231 Difference]: Finished difference. Result has 112 places, 107 transitions, 245 flow [2024-01-30 14:26:36,135 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} [2024-01-30 14:26:36,135 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -5 predicate places. [2024-01-30 14:26:36,136 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 107 transitions, 245 flow [2024-01-30 14:26:36,136 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) [2024-01-30 14:26:36,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:36,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:36,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:26:36,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:36,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:36,137 INFO L85 PathProgramCache]: Analyzing trace with hash 412969606, now seen corresponding path program 1 times [2024-01-30 14:26:36,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:36,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841837600] [2024-01-30 14:26:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:36,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841837600] [2024-01-30 14:26:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841837600] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:36,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:36,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:36,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268655160] [2024-01-30 14:26:36,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:36,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 123 [2024-01-30 14:26:36,277 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) [2024-01-30 14:26:36,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:36,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 123 [2024-01-30 14:26:36,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:36,979 INFO L124 PetriNetUnfolderBase]: 2962/7025 cut-off events. [2024-01-30 14:26:36,980 INFO L125 PetriNetUnfolderBase]: For 372/440 co-relation queries the response was YES. [2024-01-30 14:26:36,993 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. [2024-01-30 14:26:37,016 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 112 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2024-01-30 14:26:37,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 621 flow [2024-01-30 14:26:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2024-01-30 14:26:37,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7378048780487805 [2024-01-30 14:26:37,019 INFO L175 Difference]: Start difference. First operand has 112 places, 107 transitions, 245 flow. Second operand 4 states and 363 transitions. [2024-01-30 14:26:37,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 621 flow [2024-01-30 14:26:37,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 167 transitions, 618 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:37,022 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 258 flow [2024-01-30 14:26:37,023 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} [2024-01-30 14:26:37,023 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2024-01-30 14:26:37,023 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 258 flow [2024-01-30 14:26:37,024 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) [2024-01-30 14:26:37,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:37,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:37,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:26:37,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:37,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:37,025 INFO L85 PathProgramCache]: Analyzing trace with hash -912792453, now seen corresponding path program 1 times [2024-01-30 14:26:37,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:37,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144875467] [2024-01-30 14:26:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:37,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:37,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:37,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144875467] [2024-01-30 14:26:37,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144875467] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:37,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:37,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:26:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196525722] [2024-01-30 14:26:37,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:37,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:26:37,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:26:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:26:37,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 123 [2024-01-30 14:26:37,398 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) [2024-01-30 14:26:37,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:37,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 123 [2024-01-30 14:26:37,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:38,993 INFO L124 PetriNetUnfolderBase]: 8285/17463 cut-off events. [2024-01-30 14:26:39,004 INFO L125 PetriNetUnfolderBase]: For 1393/1688 co-relation queries the response was YES. [2024-01-30 14:26:39,038 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. [2024-01-30 14:26:39,098 INFO L140 encePairwiseOnDemand]: 103/123 looper letters, 214 selfloop transitions, 13 changer transitions 0/266 dead transitions. [2024-01-30 14:26:39,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 266 transitions, 1114 flow [2024-01-30 14:26:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:26:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:26:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2024-01-30 14:26:39,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6562137049941928 [2024-01-30 14:26:39,101 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 258 flow. Second operand 7 states and 565 transitions. [2024-01-30 14:26:39,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 266 transitions, 1114 flow [2024-01-30 14:26:39,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 266 transitions, 1095 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:39,106 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 359 flow [2024-01-30 14:26:39,106 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} [2024-01-30 14:26:39,106 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 5 predicate places. [2024-01-30 14:26:39,107 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 359 flow [2024-01-30 14:26:39,107 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) [2024-01-30 14:26:39,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:39,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:39,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:26:39,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:39,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1991812296, now seen corresponding path program 1 times [2024-01-30 14:26:39,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:39,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862642525] [2024-01-30 14:26:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:39,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:39,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862642525] [2024-01-30 14:26:39,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862642525] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:39,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:39,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:26:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268725756] [2024-01-30 14:26:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:39,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:26:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:26:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:26:39,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2024-01-30 14:26:39,487 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) [2024-01-30 14:26:39,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:39,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2024-01-30 14:26:39,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:41,540 INFO L124 PetriNetUnfolderBase]: 8796/19656 cut-off events. [2024-01-30 14:26:41,540 INFO L125 PetriNetUnfolderBase]: For 4663/4796 co-relation queries the response was YES. [2024-01-30 14:26:41,572 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. [2024-01-30 14:26:41,633 INFO L140 encePairwiseOnDemand]: 115/123 looper letters, 135 selfloop transitions, 8 changer transitions 0/184 dead transitions. [2024-01-30 14:26:41,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 184 transitions, 820 flow [2024-01-30 14:26:41,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:26:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:26:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 434 transitions. [2024-01-30 14:26:41,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5880758807588076 [2024-01-30 14:26:41,635 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 359 flow. Second operand 6 states and 434 transitions. [2024-01-30 14:26:41,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 184 transitions, 820 flow [2024-01-30 14:26:41,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 184 transitions, 812 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-30 14:26:41,642 INFO L231 Difference]: Finished difference. Result has 129 places, 122 transitions, 410 flow [2024-01-30 14:26:41,642 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} [2024-01-30 14:26:41,643 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 12 predicate places. [2024-01-30 14:26:41,643 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 122 transitions, 410 flow [2024-01-30 14:26:41,643 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) [2024-01-30 14:26:41,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:41,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:41,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:26:41,644 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:41,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:41,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1561450237, now seen corresponding path program 1 times [2024-01-30 14:26:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:41,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547953704] [2024-01-30 14:26:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:41,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:41,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547953704] [2024-01-30 14:26:41,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547953704] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:41,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:41,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:26:41,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664936670] [2024-01-30 14:26:41,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:41,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:26:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:26:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:26:42,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 123 [2024-01-30 14:26:42,215 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) [2024-01-30 14:26:42,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:42,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 123 [2024-01-30 14:26:42,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:43,853 INFO L124 PetriNetUnfolderBase]: 7758/16680 cut-off events. [2024-01-30 14:26:43,853 INFO L125 PetriNetUnfolderBase]: For 5521/5736 co-relation queries the response was YES. [2024-01-30 14:26:44,003 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. [2024-01-30 14:26:44,064 INFO L140 encePairwiseOnDemand]: 106/123 looper letters, 208 selfloop transitions, 14 changer transitions 0/266 dead transitions. [2024-01-30 14:26:44,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 266 transitions, 1277 flow [2024-01-30 14:26:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:26:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:26:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 593 transitions. [2024-01-30 14:26:44,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6887340301974448 [2024-01-30 14:26:44,066 INFO L175 Difference]: Start difference. First operand has 129 places, 122 transitions, 410 flow. Second operand 7 states and 593 transitions. [2024-01-30 14:26:44,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 266 transitions, 1277 flow [2024-01-30 14:26:44,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 266 transitions, 1267 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:26:44,076 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 456 flow [2024-01-30 14:26:44,077 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} [2024-01-30 14:26:44,077 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 17 predicate places. [2024-01-30 14:26:44,078 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 456 flow [2024-01-30 14:26:44,078 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) [2024-01-30 14:26:44,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:44,078 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] [2024-01-30 14:26:44,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-30 14:26:44,079 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:44,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:44,079 INFO L85 PathProgramCache]: Analyzing trace with hash 513941324, now seen corresponding path program 1 times [2024-01-30 14:26:44,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:44,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84707768] [2024-01-30 14:26:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:44,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:44,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:44,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84707768] [2024-01-30 14:26:44,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84707768] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:44,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:44,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:26:44,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991646074] [2024-01-30 14:26:44,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:44,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:26:44,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:44,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:26:44,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:26:44,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 123 [2024-01-30 14:26:44,277 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) [2024-01-30 14:26:44,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:44,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 123 [2024-01-30 14:26:44,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:45,563 INFO L124 PetriNetUnfolderBase]: 4933/12844 cut-off events. [2024-01-30 14:26:45,563 INFO L125 PetriNetUnfolderBase]: For 3626/3797 co-relation queries the response was YES. [2024-01-30 14:26:45,609 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. [2024-01-30 14:26:45,651 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 74 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2024-01-30 14:26:45,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 655 flow [2024-01-30 14:26:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:26:45,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:26:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 477 transitions. [2024-01-30 14:26:45,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-01-30 14:26:45,657 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 456 flow. Second operand 6 states and 477 transitions. [2024-01-30 14:26:45,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 655 flow [2024-01-30 14:26:45,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 629 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-30 14:26:45,672 INFO L231 Difference]: Finished difference. Result has 136 places, 125 transitions, 446 flow [2024-01-30 14:26:45,672 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} [2024-01-30 14:26:45,673 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2024-01-30 14:26:45,674 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 125 transitions, 446 flow [2024-01-30 14:26:45,674 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) [2024-01-30 14:26:45,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:45,674 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] [2024-01-30 14:26:45,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-30 14:26:45,675 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:45,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash -296406091, now seen corresponding path program 1 times [2024-01-30 14:26:45,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:45,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968415201] [2024-01-30 14:26:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:45,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:45,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968415201] [2024-01-30 14:26:45,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968415201] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:26:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186996363] [2024-01-30 14:26:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:45,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:26:45,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:26:45,844 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) [2024-01-30 14:26:45,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-30 14:26:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:45,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-30 14:26:46,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:26:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:46,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:26:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:46,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186996363] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:26:46,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:26:46,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-01-30 14:26:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960035570] [2024-01-30 14:26:46,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:26:46,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:26:46,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:46,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:26:46,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:26:46,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 123 [2024-01-30 14:26:46,654 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) [2024-01-30 14:26:46,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:46,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 123 [2024-01-30 14:26:46,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:49,784 INFO L124 PetriNetUnfolderBase]: 11205/25595 cut-off events. [2024-01-30 14:26:49,785 INFO L125 PetriNetUnfolderBase]: For 6819/7409 co-relation queries the response was YES. [2024-01-30 14:26:49,883 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. [2024-01-30 14:26:49,966 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 298 selfloop transitions, 10 changer transitions 0/360 dead transitions. [2024-01-30 14:26:49,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 360 transitions, 1942 flow [2024-01-30 14:26:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:26:49,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:26:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 730 transitions. [2024-01-30 14:26:49,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.741869918699187 [2024-01-30 14:26:49,969 INFO L175 Difference]: Start difference. First operand has 136 places, 125 transitions, 446 flow. Second operand 8 states and 730 transitions. [2024-01-30 14:26:49,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 360 transitions, 1942 flow [2024-01-30 14:26:49,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 360 transitions, 1937 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:26:49,991 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 485 flow [2024-01-30 14:26:49,991 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} [2024-01-30 14:26:49,992 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 26 predicate places. [2024-01-30 14:26:49,992 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 485 flow [2024-01-30 14:26:49,992 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) [2024-01-30 14:26:49,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:49,993 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] [2024-01-30 14:26:50,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-30 14:26:50,204 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 [2024-01-30 14:26:50,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:50,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:50,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1278195566, now seen corresponding path program 1 times [2024-01-30 14:26:50,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:50,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7525311] [2024-01-30 14:26:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:50,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:50,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-30 14:26:50,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322583248] [2024-01-30 14:26:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:50,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:26:50,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:26:50,241 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) [2024-01-30 14:26:50,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-30 14:26:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:50,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-30 14:26:50,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:26:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:50,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-30 14:26:50,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:50,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7525311] [2024-01-30 14:26:50,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-30 14:26:50,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322583248] [2024-01-30 14:26:50,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322583248] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:50,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:50,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:26:50,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485812799] [2024-01-30 14:26:50,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:50,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:50,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 123 [2024-01-30 14:26:50,510 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) [2024-01-30 14:26:50,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:50,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 123 [2024-01-30 14:26:50,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:53,366 INFO L124 PetriNetUnfolderBase]: 8859/22942 cut-off events. [2024-01-30 14:26:53,368 INFO L125 PetriNetUnfolderBase]: For 9474/9620 co-relation queries the response was YES. [2024-01-30 14:26:53,467 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. [2024-01-30 14:26:53,535 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 92 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2024-01-30 14:26:53,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 152 transitions, 811 flow [2024-01-30 14:26:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:53,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2024-01-30 14:26:53,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2024-01-30 14:26:53,537 INFO L175 Difference]: Start difference. First operand has 143 places, 127 transitions, 485 flow. Second operand 4 states and 348 transitions. [2024-01-30 14:26:53,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 152 transitions, 811 flow [2024-01-30 14:26:53,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 152 transitions, 777 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-01-30 14:26:53,557 INFO L231 Difference]: Finished difference. Result has 142 places, 126 transitions, 474 flow [2024-01-30 14:26:53,557 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} [2024-01-30 14:26:53,558 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 25 predicate places. [2024-01-30 14:26:53,558 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 126 transitions, 474 flow [2024-01-30 14:26:53,558 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) [2024-01-30 14:26:53,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:53,558 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] [2024-01-30 14:26:53,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-30 14:26:53,770 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 [2024-01-30 14:26:53,770 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:53,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:53,771 INFO L85 PathProgramCache]: Analyzing trace with hash 455542531, now seen corresponding path program 1 times [2024-01-30 14:26:53,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:53,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816025532] [2024-01-30 14:26:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:53,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:53,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-30 14:26:53,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371632682] [2024-01-30 14:26:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:53,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:26:53,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:26:53,784 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) [2024-01-30 14:26:53,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-30 14:26:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:53,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-30 14:26:53,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:26:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:53,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-30 14:26:53,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816025532] [2024-01-30 14:26:53,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-30 14:26:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371632682] [2024-01-30 14:26:53,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371632682] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:53,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:26:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803768036] [2024-01-30 14:26:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:53,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:26:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:26:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:26:53,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 123 [2024-01-30 14:26:53,998 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) [2024-01-30 14:26:53,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:53,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 123 [2024-01-30 14:26:53,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:57,083 INFO L124 PetriNetUnfolderBase]: 9322/25000 cut-off events. [2024-01-30 14:26:57,083 INFO L125 PetriNetUnfolderBase]: For 8821/8977 co-relation queries the response was YES. [2024-01-30 14:26:57,192 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. [2024-01-30 14:26:57,258 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 165 selfloop transitions, 10 changer transitions 0/236 dead transitions. [2024-01-30 14:26:57,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 236 transitions, 1298 flow [2024-01-30 14:26:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:26:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:26:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 558 transitions. [2024-01-30 14:26:57,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7560975609756098 [2024-01-30 14:26:57,260 INFO L175 Difference]: Start difference. First operand has 142 places, 126 transitions, 474 flow. Second operand 6 states and 558 transitions. [2024-01-30 14:26:57,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 236 transitions, 1298 flow [2024-01-30 14:26:57,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 236 transitions, 1296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:26:57,284 INFO L231 Difference]: Finished difference. Result has 148 places, 129 transitions, 514 flow [2024-01-30 14:26:57,285 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} [2024-01-30 14:26:57,285 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 31 predicate places. [2024-01-30 14:26:57,285 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 514 flow [2024-01-30 14:26:57,285 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) [2024-01-30 14:26:57,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:57,286 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] [2024-01-30 14:26:57,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-01-30 14:26:57,496 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 [2024-01-30 14:26:57,497 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:26:57,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash 219519289, now seen corresponding path program 1 times [2024-01-30 14:26:57,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:57,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631726106] [2024-01-30 14:26:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:57,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:57,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:57,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631726106] [2024-01-30 14:26:57,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631726106] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:26:57,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648446423] [2024-01-30 14:26:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:57,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:26:57,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:26:57,766 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) [2024-01-30 14:26:57,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-30 14:26:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:57,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjunts are in the unsatisfiable core [2024-01-30 14:26:57,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:26:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:58,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:26:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:59,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648446423] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:26:59,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:26:59,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-01-30 14:26:59,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438359882] [2024-01-30 14:26:59,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:26:59,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-30 14:26:59,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:59,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-30 14:26:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2024-01-30 14:27:00,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 123 [2024-01-30 14:27:00,330 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) [2024-01-30 14:27:00,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:27:00,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 123 [2024-01-30 14:27:00,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:27:12,446 INFO L124 PetriNetUnfolderBase]: 44201/89207 cut-off events. [2024-01-30 14:27:12,446 INFO L125 PetriNetUnfolderBase]: For 46745/47615 co-relation queries the response was YES. [2024-01-30 14:27:13,048 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. [2024-01-30 14:27:13,325 INFO L140 encePairwiseOnDemand]: 92/123 looper letters, 571 selfloop transitions, 115 changer transitions 0/723 dead transitions. [2024-01-30 14:27:13,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 723 transitions, 4182 flow [2024-01-30 14:27:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-01-30 14:27:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-01-30 14:27:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1982 transitions. [2024-01-30 14:27:13,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5556490047659097 [2024-01-30 14:27:13,329 INFO L175 Difference]: Start difference. First operand has 148 places, 129 transitions, 514 flow. Second operand 29 states and 1982 transitions. [2024-01-30 14:27:13,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 723 transitions, 4182 flow [2024-01-30 14:27:13,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 723 transitions, 4124 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:27:13,863 INFO L231 Difference]: Finished difference. Result has 196 places, 229 transitions, 1620 flow [2024-01-30 14:27:13,863 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} [2024-01-30 14:27:13,863 INFO L281 CegarLoopForPetriNet]: 117 programPoint places, 79 predicate places. [2024-01-30 14:27:13,863 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 229 transitions, 1620 flow [2024-01-30 14:27:13,864 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) [2024-01-30 14:27:13,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:27:13,864 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] [2024-01-30 14:27:13,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-30 14:27:14,075 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 [2024-01-30 14:27:14,075 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err15ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 74 more)] === [2024-01-30 14:27:14,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:27:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1029495618, now seen corresponding path program 1 times [2024-01-30 14:27:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:27:14,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709857745] [2024-01-30 14:27:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:27:14,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:27:14,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-30 14:27:14,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224798702] [2024-01-30 14:27:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:27:14,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:27:14,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:27:14,372 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) [2024-01-30 14:27:14,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-30 14:27:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:27:14,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 12 conjunts are in the unsatisfiable core [2024-01-30 14:27:14,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:27:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:27:14,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-30 14:27:14,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:27:14,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709857745] [2024-01-30 14:27:14,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-30 14:27:14,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224798702] [2024-01-30 14:27:14,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224798702] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:27:14,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:27:14,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:27:14,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292158340] [2024-01-30 14:27:14,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:27:14,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:27:14,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:27:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:27:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:27:14,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 123 [2024-01-30 14:27:14,864 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) [2024-01-30 14:27:14,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:27:14,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 123 [2024-01-30 14:27:14,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand