./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.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/36-apron_21-traces-cluster-based_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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/goblint-regression/36-apron_21-traces-cluster-based_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_true.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-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:07:19,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:07:19,248 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:07:19,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:07:19,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:07:19,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:07:19,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:07:19,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:07:19,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:07:19,268 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:07:19,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:07:19,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:07:19,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:07:19,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:07:19,270 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:07:19,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:07:19,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:07:19,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:07:19,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:07:19,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:07:19,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:07:19,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:07:19,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:07:19,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:07:19,273 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:07:19,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:07:19,274 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:07:19,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:07:19,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:07:19,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:07:19,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:07:19,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:07:19,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:07:19,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:07:19,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:07:19,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:07:19,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:07:19,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:07:19,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:07:19,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:07:19,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:07:19,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:07:19,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:07:19,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:07:19,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:07:19,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:07:19,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:07:19,548 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:07:19,548 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:07:19,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-01-31 16:07:20,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:07:20,861 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:07:20,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-01-31 16:07:20,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d85e0cf2a/ffa6eec782ea463f83c6f5719ac933fa/FLAG9d8323291 [2024-01-31 16:07:20,921 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d85e0cf2a/ffa6eec782ea463f83c6f5719ac933fa [2024-01-31 16:07:20,933 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:07:20,934 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:07:20,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/36-apron_21-traces-cluster-based_true.yml/witness.yml [2024-01-31 16:07:21,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:07:21,122 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:07:21,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:07:21,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:07:21,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:07:21,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:07:20" (1/2) ... [2024-01-31 16:07:21,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee166c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:21, skipping insertion in model container [2024-01-31 16:07:21,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:07:20" (1/2) ... [2024-01-31 16:07:21,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49830c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:07:21, skipping insertion in model container [2024-01-31 16:07:21,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:07:21" (2/2) ... [2024-01-31 16:07:21,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee166c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21, skipping insertion in model container [2024-01-31 16:07:21,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:07:21" (2/2) ... [2024-01-31 16:07:21,133 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:07:21,265 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:07:21,266 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L712] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,266 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] ((-1016 <= h) && (-999 <= g)) && (-999 <= x) [2024-01-31 16:07:21,266 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] ((((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && (h <= 2147483630)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,266 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] ((-1016 <= y) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,266 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,267 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] ((-1016 <= y) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,267 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (unsigned long )arg == 0UL [2024-01-31 16:07:21,267 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] (((-999 <= g) && (-999 <= h)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,267 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] (unsigned long )arg == 0UL [2024-01-31 16:07:21,267 INFO L98 nessWitnessExtractor]: Location invariant after [L713-L713] (unsigned long )arg == 0UL [2024-01-31 16:07:21,267 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,267 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x) [2024-01-31 16:07:21,268 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (((-999 <= g) && (-999 <= h)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,268 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (g == 42) && (h == 42) [2024-01-31 16:07:21,268 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] ((-1016 <= h) && (-999 <= g)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,268 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] ((((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,268 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] ((-1016 <= h) && (-999 <= g)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,268 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] (unsigned long )arg == 0UL [2024-01-31 16:07:21,269 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] ((((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && (g == 42)) && (h == 42) [2024-01-31 16:07:21,269 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,269 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] (((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x) [2024-01-31 16:07:21,269 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && (h <= 2147483630)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,269 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] ((-1016 <= y) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,270 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] (-1016 <= h) && (-999 <= g) [2024-01-31 16:07:21,270 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (g == 42) && (h == 42) [2024-01-31 16:07:21,270 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] ((-1016 <= y) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,270 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] (unsigned long )arg == 0UL [2024-01-31 16:07:21,270 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] ((-1016 <= h) && (-999 <= g)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,270 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] ((((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && (h <= 2147483630)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,270 INFO L98 nessWitnessExtractor]: Location invariant after [L724-L724] ((((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && (g == 42)) && (h == 42) [2024-01-31 16:07:21,270 INFO L98 nessWitnessExtractor]: Location invariant after [L702-L702] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,271 INFO L98 nessWitnessExtractor]: Location invariant before [L735-L735] (((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x) [2024-01-31 16:07:21,271 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] ((((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,271 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x) [2024-01-31 16:07:21,271 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] (unsigned long )arg == 0UL [2024-01-31 16:07:21,272 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] (unsigned long )arg == 0UL [2024-01-31 16:07:21,272 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (-1016 <= y) && (-999 <= x) [2024-01-31 16:07:21,272 INFO L98 nessWitnessExtractor]: Location invariant after [L703-L703] (unsigned long )arg == 0UL [2024-01-31 16:07:21,273 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] ((((-1016 <= h) && (-1016 <= y)) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,273 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,273 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] (-1016 <= y) && (-999 <= x) [2024-01-31 16:07:21,273 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L713] (unsigned long )arg == 0UL [2024-01-31 16:07:21,274 INFO L98 nessWitnessExtractor]: Location invariant after [L712-L712] (((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,274 INFO L98 nessWitnessExtractor]: Location invariant after [L725-L725] (g == 42) && (h == 42) [2024-01-31 16:07:21,274 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,274 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] (-999 <= x) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,274 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] (((-1016 <= h) && (-999 <= g)) && (-999 <= x)) && ((unsigned long )arg == 0UL) [2024-01-31 16:07:21,275 INFO L98 nessWitnessExtractor]: Location invariant after [L687-L687] (unsigned long )arg == 0UL [2024-01-31 16:07:21,314 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:07:21,450 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-01-31 16:07:21,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:07:21,598 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:07:21,608 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-01-31 16:07:21,636 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:07:21,639 WARN L424 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry 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 [2024-01-31 16:07:21,691 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:07:21,692 WARN L424 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry [2024-01-31 16:07:21,693 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:07:21,693 WARN L424 MainDispatcher]: Unable to annotate y = __VERIFIER_nondet_int() with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:07:21,704 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:07:21,705 WARN L424 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry [2024-01-31 16:07:21,705 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:07:21,705 WARN L424 MainDispatcher]: Unable to annotate y = __VERIFIER_nondet_int() with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:07:21,715 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:07:21,715 WARN L424 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry [2024-01-31 16:07:21,716 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:07:21,716 WARN L424 MainDispatcher]: Unable to annotate y = __VERIFIER_nondet_int() with a witness entry 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 [2024-01-31 16:07:21,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:07:21,758 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:07:21,758 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21 WrapperNode [2024-01-31 16:07:21,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:07:21,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:07:21,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:07:21,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:07:21,765 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 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,790 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 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,816 INFO L138 Inliner]: procedures = 166, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 172 [2024-01-31 16:07:21,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:07:21,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:07:21,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:07:21,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:07:21,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,846 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 1, 5, 5, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0, 0]. The 3 writes are split as follows [0, 1, 0, 0, 1, 1]. [2024-01-31 16:07:21,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,872 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:07:21,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:07:21,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:07:21,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:07:21,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (1/1) ... [2024-01-31 16:07:21,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:07:21,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:07:21,908 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) [2024-01-31 16:07:21,910 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 [2024-01-31 16:07:21,935 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-01-31 16:07:21,936 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-01-31 16:07:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:07:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:07:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:07:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:07:21,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:07:21,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:07:21,937 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 16:07:21,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:07:21,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:07:21,938 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-01-31 16:07:21,938 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-01-31 16:07:21,938 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-31 16:07:21,938 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-31 16:07:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:07:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:07:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:07:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:07:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:07:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:07:21,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:07:21,940 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 16:07:21,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:07:21,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:07:21,941 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:07:22,057 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:07:22,060 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:07:22,410 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:07:22,411 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:07:22,544 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:07:22,544 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:07:22,544 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:07:22 BoogieIcfgContainer [2024-01-31 16:07:22,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:07:22,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:07:22,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:07:22,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:07:22,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:07:20" (1/4) ... [2024-01-31 16:07:22,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a281b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:07:22, skipping insertion in model container [2024-01-31 16:07:22,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:07:21" (2/4) ... [2024-01-31 16:07:22,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a281b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:07:22, skipping insertion in model container [2024-01-31 16:07:22,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:07:21" (3/4) ... [2024-01-31 16:07:22,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a281b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:07:22, skipping insertion in model container [2024-01-31 16:07:22,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:07:22" (4/4) ... [2024-01-31 16:07:22,551 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-01-31 16:07:22,564 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:07:22,564 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-01-31 16:07:22,564 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:07:22,634 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:07:22,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 135 transitions, 282 flow [2024-01-31 16:07:22,695 INFO L124 PetriNetUnfolderBase]: 5/132 cut-off events. [2024-01-31 16:07:22,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:07:22,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 132 events. 5/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 455 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2024-01-31 16:07:22,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 135 transitions, 282 flow [2024-01-31 16:07:22,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 132 transitions, 273 flow [2024-01-31 16:07:22,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:07:22,714 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;@2dcdaf28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:07:22,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2024-01-31 16:07:22,716 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:07:22,716 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:07:22,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:07:22,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:22,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:07:22,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:22,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 16051, now seen corresponding path program 1 times [2024-01-31 16:07:22,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:22,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909041995] [2024-01-31 16:07:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:23,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909041995] [2024-01-31 16:07:23,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909041995] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:23,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:23,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:07:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980268528] [2024-01-31 16:07:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:23,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:07:23,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:23,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:07:23,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:07:23,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 135 [2024-01-31 16:07:23,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 132 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:23,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:23,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 135 [2024-01-31 16:07:23,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:30,288 INFO L124 PetriNetUnfolderBase]: 46805/94352 cut-off events. [2024-01-31 16:07:30,289 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-01-31 16:07:30,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159209 conditions, 94352 events. 46805/94352 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 2146. Compared 1043741 event pairs, 17077 based on Foata normal form. 5950/90681 useless extension candidates. Maximal degree in co-relation 159196. Up to 41670 conditions per place. [2024-01-31 16:07:30,965 INFO L140 encePairwiseOnDemand]: 127/135 looper letters, 82 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2024-01-31 16:07:30,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 162 transitions, 507 flow [2024-01-31 16:07:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:07:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:07:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2024-01-31 16:07:30,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8320987654320988 [2024-01-31 16:07:30,976 INFO L175 Difference]: Start difference. First operand has 137 places, 132 transitions, 273 flow. Second operand 3 states and 337 transitions. [2024-01-31 16:07:30,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 162 transitions, 507 flow [2024-01-31 16:07:30,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 162 transitions, 502 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:07:30,984 INFO L231 Difference]: Finished difference. Result has 136 places, 127 transitions, 268 flow [2024-01-31 16:07:30,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=136, PETRI_TRANSITIONS=127} [2024-01-31 16:07:30,989 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -1 predicate places. [2024-01-31 16:07:30,989 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 127 transitions, 268 flow [2024-01-31 16:07:30,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:30,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:30,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:07:30,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:07:30,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:30,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash 478867177, now seen corresponding path program 1 times [2024-01-31 16:07:30,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:30,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320175335] [2024-01-31 16:07:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:30,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:31,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320175335] [2024-01-31 16:07:31,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320175335] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:31,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:31,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:31,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206624869] [2024-01-31 16:07:31,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:31,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:31,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:31,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 135 [2024-01-31 16:07:31,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 127 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:31,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:31,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 135 [2024-01-31 16:07:31,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:38,008 INFO L124 PetriNetUnfolderBase]: 44688/95177 cut-off events. [2024-01-31 16:07:38,008 INFO L125 PetriNetUnfolderBase]: For 1307/1307 co-relation queries the response was YES. [2024-01-31 16:07:38,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159838 conditions, 95177 events. 44688/95177 cut-off events. For 1307/1307 co-relation queries the response was YES. Maximal size of possible extension queue 2140. Compared 1095202 event pairs, 2232 based on Foata normal form. 1307/86619 useless extension candidates. Maximal degree in co-relation 159825. Up to 58140 conditions per place. [2024-01-31 16:07:38,838 INFO L140 encePairwiseOnDemand]: 131/135 looper letters, 80 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2024-01-31 16:07:38,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 159 transitions, 500 flow [2024-01-31 16:07:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:07:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:07:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2024-01-31 16:07:38,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2024-01-31 16:07:38,844 INFO L175 Difference]: Start difference. First operand has 136 places, 127 transitions, 268 flow. Second operand 4 states and 408 transitions. [2024-01-31 16:07:38,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 159 transitions, 500 flow [2024-01-31 16:07:39,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 159 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:39,102 INFO L231 Difference]: Finished difference. Result has 135 places, 125 transitions, 264 flow [2024-01-31 16:07:39,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=135, PETRI_TRANSITIONS=125} [2024-01-31 16:07:39,102 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -2 predicate places. [2024-01-31 16:07:39,103 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 125 transitions, 264 flow [2024-01-31 16:07:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:39,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:39,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:39,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:07:39,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:39,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash 629877580, now seen corresponding path program 1 times [2024-01-31 16:07:39,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:39,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056024704] [2024-01-31 16:07:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:39,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:39,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:39,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056024704] [2024-01-31 16:07:39,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056024704] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:39,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:39,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:39,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463757801] [2024-01-31 16:07:39,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:39,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:39,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:39,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:39,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:39,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 135 [2024-01-31 16:07:39,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 125 transitions, 264 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) [2024-01-31 16:07:39,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:39,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 135 [2024-01-31 16:07:39,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:47,848 INFO L124 PetriNetUnfolderBase]: 76530/127741 cut-off events. [2024-01-31 16:07:47,848 INFO L125 PetriNetUnfolderBase]: For 1306/1306 co-relation queries the response was YES. [2024-01-31 16:07:48,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236187 conditions, 127741 events. 76530/127741 cut-off events. For 1306/1306 co-relation queries the response was YES. Maximal size of possible extension queue 2538. Compared 1207256 event pairs, 5770 based on Foata normal form. 0/124900 useless extension candidates. Maximal degree in co-relation 236174. Up to 82365 conditions per place. [2024-01-31 16:07:48,662 INFO L140 encePairwiseOnDemand]: 132/135 looper letters, 124 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2024-01-31 16:07:48,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 193 transitions, 660 flow [2024-01-31 16:07:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:07:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:07:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 411 transitions. [2024-01-31 16:07:48,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7611111111111111 [2024-01-31 16:07:48,668 INFO L175 Difference]: Start difference. First operand has 135 places, 125 transitions, 264 flow. Second operand 4 states and 411 transitions. [2024-01-31 16:07:48,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 193 transitions, 660 flow [2024-01-31 16:07:48,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 193 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:48,672 INFO L231 Difference]: Finished difference. Result has 135 places, 124 transitions, 263 flow [2024-01-31 16:07:48,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2024-01-31 16:07:48,673 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -2 predicate places. [2024-01-31 16:07:48,673 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 263 flow [2024-01-31 16:07:48,677 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) [2024-01-31 16:07:48,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:48,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:48,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:07:48,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:48,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash 624819998, now seen corresponding path program 1 times [2024-01-31 16:07:48,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:48,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272525097] [2024-01-31 16:07:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:48,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:48,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:48,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272525097] [2024-01-31 16:07:48,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272525097] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:48,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:48,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:48,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629961094] [2024-01-31 16:07:48,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:48,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:48,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:48,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:48,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:48,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 135 [2024-01-31 16:07:48,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:48,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:48,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 135 [2024-01-31 16:07:48,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:54,838 INFO L124 PetriNetUnfolderBase]: 44688/88430 cut-off events. [2024-01-31 16:07:54,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:07:55,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153035 conditions, 88430 events. 44688/88430 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2066. Compared 969055 event pairs, 23399 based on Foata normal form. 1885/81822 useless extension candidates. Maximal degree in co-relation 153023. Up to 56456 conditions per place. [2024-01-31 16:07:55,415 INFO L140 encePairwiseOnDemand]: 132/135 looper letters, 92 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2024-01-31 16:07:55,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 169 transitions, 547 flow [2024-01-31 16:07:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:07:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:07:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 423 transitions. [2024-01-31 16:07:55,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2024-01-31 16:07:55,422 INFO L175 Difference]: Start difference. First operand has 135 places, 124 transitions, 263 flow. Second operand 4 states and 423 transitions. [2024-01-31 16:07:55,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 169 transitions, 547 flow [2024-01-31 16:07:55,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 169 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:55,427 INFO L231 Difference]: Finished difference. Result has 135 places, 123 transitions, 262 flow [2024-01-31 16:07:55,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=135, PETRI_TRANSITIONS=123} [2024-01-31 16:07:55,428 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -2 predicate places. [2024-01-31 16:07:55,428 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 123 transitions, 262 flow [2024-01-31 16:07:55,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:55,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:55,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:55,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:07:55,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t3_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:55,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash -846635288, now seen corresponding path program 1 times [2024-01-31 16:07:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:55,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411821125] [2024-01-31 16:07:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:55,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:55,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:55,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411821125] [2024-01-31 16:07:55,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411821125] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:55,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:55,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841784077] [2024-01-31 16:07:55,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:55,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:55,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:55,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 135 [2024-01-31 16:07:55,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 123 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:55,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:55,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 135 [2024-01-31 16:07:55,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand