./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_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/13-privatized_01-priv_nr_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/13-privatized_01-priv_nr_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_01-priv_nr_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-dev-a340643-m [2024-01-27 14:48:54,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:48:55,035 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:48:55,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:48:55,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:48:55,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:48:55,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:48:55,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:48:55,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:48:55,072 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:48:55,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:48:55,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:48:55,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:48:55,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:48:55,074 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:48:55,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:48:55,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:48:55,075 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:48:55,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:48:55,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:48:55,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:48:55,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:48:55,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:48:55,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:48:55,077 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:48:55,077 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:48:55,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:48:55,078 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:48:55,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:48:55,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:48:55,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:48:55,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:48:55,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:48:55,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:48:55,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:48:55,080 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:48:55,080 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:48:55,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:48:55,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:48:55,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:48:55,081 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:48:55,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:48:55,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:48:55,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:48:55,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:48:55,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:48:55,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:48:55,312 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:48:55,313 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:48:55,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2024-01-27 14:48:56,487 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:48:56,728 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:48:56,729 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2024-01-27 14:48:56,750 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f92d8c75/f2a7812c92e642e89d0e5c94df909532/FLAGf4f568f29 [2024-01-27 14:48:56,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f92d8c75/f2a7812c92e642e89d0e5c94df909532 [2024-01-27 14:48:56,769 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:48:56,769 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:48:56,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_01-priv_nr_true.yml/witness.yml [2024-01-27 14:48:56,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:48:56,856 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:48:56,858 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:48:56,858 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:48:56,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:48:56,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:48:56" (1/2) ... [2024-01-27 14:48:56,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a800df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:48:56, skipping insertion in model container [2024-01-27 14:48:56,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:48:56" (1/2) ... [2024-01-27 14:48:56,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ff953fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:48:56, skipping insertion in model container [2024-01-27 14:48:56,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:48:56" (2/2) ... [2024-01-27 14:48:56,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a800df and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:56, skipping insertion in model container [2024-01-27 14:48:56,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:48:56" (2/2) ... [2024-01-27 14:48:56,867 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:48:56,898 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:48:56,900 INFO L98 nessWitnessExtractor]: Location invariant before [L686-L686] (unsigned long )arg == 0UL [2024-01-27 14:48:56,900 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] glob1 == 5 [2024-01-27 14:48:56,900 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (0LL - (long long )glob1) + (long long )t >= 0LL [2024-01-27 14:48:56,900 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (unsigned long )arg == 0UL [2024-01-27 14:48:56,900 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] glob1 == 5 [2024-01-27 14:48:56,901 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (long long )glob1 - (long long )t >= 0LL [2024-01-27 14:48:56,901 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] t == 5 [2024-01-27 14:48:56,901 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] glob1 == 6 [2024-01-27 14:48:56,901 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] glob1 == 6 [2024-01-27 14:48:56,901 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] t == 5 [2024-01-27 14:48:56,901 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:48:56,902 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-01-27 14:48:56,902 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] t == 5 [2024-01-27 14:48:56,902 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] glob1 == -10 [2024-01-27 14:48:56,902 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] glob1 == 5 [2024-01-27 14:48:56,903 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] (unsigned long )arg == 0UL [2024-01-27 14:48:56,903 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] t == 5 [2024-01-27 14:48:56,903 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] glob1 == 5 [2024-01-27 14:48:56,903 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] (unsigned long )arg == 0UL [2024-01-27 14:48:56,903 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] t == 5 [2024-01-27 14:48:56,903 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] glob1 == 5 [2024-01-27 14:48:56,904 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] (glob1 == 5 || glob1 == 6) || ((((((-128 <= glob1 && -10 <= glob1) && glob1 <= 5) && glob1 <= 127) && glob1 % 15 == 5) && glob1 != 0) && (glob1 == -10 || glob1 == 5)) [2024-01-27 14:48:56,904 INFO L98 nessWitnessExtractor]: Location invariant before [L19-L19] (glob1 == 5 || glob1 == 6) || ((((((-128 <= glob1 && -10 <= glob1) && glob1 <= 5) && glob1 <= 127) && glob1 % 15 == 5) && glob1 != 0) && (glob1 == -10 || glob1 == 5)) [2024-01-27 14:48:56,904 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] glob1 == 5 [2024-01-27 14:48:56,904 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] (unsigned long )arg == 0UL [2024-01-27 14:48:56,904 INFO L98 nessWitnessExtractor]: Location invariant before [L687-L687] glob1 == 5 [2024-01-27 14:48:56,905 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] glob1 == 5 [2024-01-27 14:48:56,905 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] t == 5 [2024-01-27 14:48:56,905 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (unsigned long )arg == 0UL [2024-01-27 14:48:56,905 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] glob1 == -10 [2024-01-27 14:48:56,939 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:48:57,083 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/13-privatized_01-priv_nr_true.i[1084,1097] [2024-01-27 14:48:57,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:48:57,230 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 14:48:57,241 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/13-privatized_01-priv_nr_true.i[1084,1097] [2024-01-27 14:48:57,241 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } } 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 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:48:57,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:48:57,357 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:48:57,358 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57 WrapperNode [2024-01-27 14:48:57,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:48:57,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:48:57,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:48:57,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:48:57,364 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 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,372 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 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,400 INFO L138 Inliner]: procedures = 163, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2024-01-27 14:48:57,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:48:57,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:48:57,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:48:57,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:48:57,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,424 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,442 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-01-27 14:48:57,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:48:57,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:48:57,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:48:57,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:48:57,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (1/1) ... [2024-01-27 14:48:57,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:48:57,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:48:57,501 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) [2024-01-27 14:48:57,543 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 [2024-01-27 14:48:57,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 14:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 14:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 14:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 14:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 14:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 14:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 14:48:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:48:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:48:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-27 14:48:57,570 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-27 14:48:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:48:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 14:48:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 14:48:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 14:48:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 14:48:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:48:57,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:48:57,572 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 14:48:57,715 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:48:57,717 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:48:57,965 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:48:57,965 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:48:58,079 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:48:58,079 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 14:48:58,080 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:48:58 BoogieIcfgContainer [2024-01-27 14:48:58,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:48:58,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:48:58,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:48:58,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:48:58,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:48:56" (1/4) ... [2024-01-27 14:48:58,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f9ef48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:48:58, skipping insertion in model container [2024-01-27 14:48:58,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:48:56" (2/4) ... [2024-01-27 14:48:58,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f9ef48 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:48:58, skipping insertion in model container [2024-01-27 14:48:58,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:48:57" (3/4) ... [2024-01-27 14:48:58,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f9ef48 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:48:58, skipping insertion in model container [2024-01-27 14:48:58,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:48:58" (4/4) ... [2024-01-27 14:48:58,086 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2024-01-27 14:48:58,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:48:58,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-01-27 14:48:58,100 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:48:58,132 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-27 14:48:58,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 189 flow [2024-01-27 14:48:58,179 INFO L124 PetriNetUnfolderBase]: 4/90 cut-off events. [2024-01-27 14:48:58,179 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 14:48:58,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 90 events. 4/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2024-01-27 14:48:58,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 91 transitions, 189 flow [2024-01-27 14:48:58,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 88 transitions, 179 flow [2024-01-27 14:48:58,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:48:58,197 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;@770746e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:48:58,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-01-27 14:48:58,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:48:58,204 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 14:48:58,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:48:58,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:48:58,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 14:48:58,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:48:58,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:48:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash 10727, now seen corresponding path program 1 times [2024-01-27 14:48:58,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:48:58,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965052933] [2024-01-27 14:48:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:48:58,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:48:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:48:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:48:58,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:48:58,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965052933] [2024-01-27 14:48:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965052933] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:48:58,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:48:58,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:48:58,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358237873] [2024-01-27 14:48:58,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:48:58,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:48:58,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:48:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:48:58,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:48:58,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 91 [2024-01-27 14:48:58,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-01-27 14:48:58,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:48:58,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 91 [2024-01-27 14:48:58,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:48:58,551 INFO L124 PetriNetUnfolderBase]: 173/815 cut-off events. [2024-01-27 14:48:58,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:48:58,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 815 events. 173/815 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5399 event pairs, 92 based on Foata normal form. 85/746 useless extension candidates. Maximal degree in co-relation 1242. Up to 257 conditions per place. [2024-01-27 14:48:58,558 INFO L140 encePairwiseOnDemand]: 67/91 looper letters, 48 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2024-01-27 14:48:58,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 323 flow [2024-01-27 14:48:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:48:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:48:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-01-27 14:48:58,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2024-01-27 14:48:58,570 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 179 flow. Second operand 3 states and 217 transitions. [2024-01-27 14:48:58,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 323 flow [2024-01-27 14:48:58,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 103 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 14:48:58,576 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 248 flow [2024-01-27 14:48:58,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2024-01-27 14:48:58,580 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2024-01-27 14:48:58,580 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 248 flow [2024-01-27 14:48:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-01-27 14:48:58,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:48:58,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 14:48:58,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 14:48:58,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:48:58,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:48:58,582 INFO L85 PathProgramCache]: Analyzing trace with hash 10318938, now seen corresponding path program 1 times [2024-01-27 14:48:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:48:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030582158] [2024-01-27 14:48:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:48:58,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:48:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:48:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:48:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:48:58,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030582158] [2024-01-27 14:48:58,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030582158] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:48:58,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:48:58,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:48:58,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462605925] [2024-01-27 14:48:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:48:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:48:58,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:48:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:48:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:48:58,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2024-01-27 14:48:58,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2024-01-27 14:48:58,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:48:58,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2024-01-27 14:48:58,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:48:58,887 INFO L124 PetriNetUnfolderBase]: 201/839 cut-off events. [2024-01-27 14:48:58,888 INFO L125 PetriNetUnfolderBase]: For 203/218 co-relation queries the response was YES. [2024-01-27 14:48:58,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 839 events. 201/839 cut-off events. For 203/218 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5496 event pairs, 83 based on Foata normal form. 7/715 useless extension candidates. Maximal degree in co-relation 1612. Up to 245 conditions per place. [2024-01-27 14:48:58,894 INFO L140 encePairwiseOnDemand]: 76/91 looper letters, 69 selfloop transitions, 19 changer transitions 0/128 dead transitions. [2024-01-27 14:48:58,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 540 flow [2024-01-27 14:48:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 14:48:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 14:48:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 306 transitions. [2024-01-27 14:48:58,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6725274725274726 [2024-01-27 14:48:58,901 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 248 flow. Second operand 5 states and 306 transitions. [2024-01-27 14:48:58,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 540 flow [2024-01-27 14:48:58,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:48:58,910 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 282 flow [2024-01-27 14:48:58,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-01-27 14:48:58,911 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -1 predicate places. [2024-01-27 14:48:58,911 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 282 flow [2024-01-27 14:48:58,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2024-01-27 14:48:58,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:48:58,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:48:58,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 14:48:58,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:48:58,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:48:58,921 INFO L85 PathProgramCache]: Analyzing trace with hash -705145586, now seen corresponding path program 1 times [2024-01-27 14:48:58,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:48:58,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501301870] [2024-01-27 14:48:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:48:58,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:48:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:48:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:48:59,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:48:59,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501301870] [2024-01-27 14:48:59,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501301870] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:48:59,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:48:59,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:48:59,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287834232] [2024-01-27 14:48:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:48:59,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:48:59,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:48:59,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:48:59,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:48:59,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 91 [2024-01-27 14:48:59,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-01-27 14:48:59,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:48:59,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 91 [2024-01-27 14:48:59,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:48:59,171 INFO L124 PetriNetUnfolderBase]: 132/641 cut-off events. [2024-01-27 14:48:59,171 INFO L125 PetriNetUnfolderBase]: For 175/183 co-relation queries the response was YES. [2024-01-27 14:48:59,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 641 events. 132/641 cut-off events. For 175/183 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3964 event pairs, 74 based on Foata normal form. 61/621 useless extension candidates. Maximal degree in co-relation 1216. Up to 286 conditions per place. [2024-01-27 14:48:59,174 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 36 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-01-27 14:48:59,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 91 transitions, 372 flow [2024-01-27 14:48:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:48:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:48:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-01-27 14:48:59,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-01-27 14:48:59,176 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 282 flow. Second operand 4 states and 252 transitions. [2024-01-27 14:48:59,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 91 transitions, 372 flow [2024-01-27 14:48:59,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 14:48:59,180 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 270 flow [2024-01-27 14:48:59,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2024-01-27 14:48:59,181 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -6 predicate places. [2024-01-27 14:48:59,182 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 270 flow [2024-01-27 14:48:59,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2024-01-27 14:48:59,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:48:59,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:48:59,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 14:48:59,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:48:59,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:48:59,184 INFO L85 PathProgramCache]: Analyzing trace with hash -325528768, now seen corresponding path program 1 times [2024-01-27 14:48:59,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:48:59,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855059815] [2024-01-27 14:48:59,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:48:59,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:48:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:48:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:48:59,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:48:59,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855059815] [2024-01-27 14:48:59,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855059815] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:48:59,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:48:59,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:48:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998660398] [2024-01-27 14:48:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:48:59,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:48:59,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:48:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:48:59,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:48:59,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 91 [2024-01-27 14:48:59,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-01-27 14:48:59,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:48:59,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 91 [2024-01-27 14:48:59,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:48:59,407 INFO L124 PetriNetUnfolderBase]: 156/629 cut-off events. [2024-01-27 14:48:59,408 INFO L125 PetriNetUnfolderBase]: For 171/182 co-relation queries the response was YES. [2024-01-27 14:48:59,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 629 events. 156/629 cut-off events. For 171/182 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3705 event pairs, 88 based on Foata normal form. 62/616 useless extension candidates. Maximal degree in co-relation 1323. Up to 245 conditions per place. [2024-01-27 14:48:59,410 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 49 selfloop transitions, 9 changer transitions 1/91 dead transitions. [2024-01-27 14:48:59,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 91 transitions, 380 flow [2024-01-27 14:48:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:48:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:48:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2024-01-27 14:48:59,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6758241758241759 [2024-01-27 14:48:59,412 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 270 flow. Second operand 4 states and 246 transitions. [2024-01-27 14:48:59,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 91 transitions, 380 flow [2024-01-27 14:48:59,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:48:59,414 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 258 flow [2024-01-27 14:48:59,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2024-01-27 14:48:59,415 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -4 predicate places. [2024-01-27 14:48:59,415 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 258 flow [2024-01-27 14:48:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-01-27 14:48:59,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:48:59,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:48:59,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 14:48:59,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:48:59,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:48:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2143750989, now seen corresponding path program 1 times [2024-01-27 14:48:59,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:48:59,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195532175] [2024-01-27 14:48:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:48:59,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:48:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:48:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:48:59,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:48:59,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195532175] [2024-01-27 14:48:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195532175] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:48:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:48:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:48:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713572099] [2024-01-27 14:48:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:48:59,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:48:59,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:48:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:48:59,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:48:59,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 91 [2024-01-27 14:48:59,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-01-27 14:48:59,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:48:59,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 91 [2024-01-27 14:48:59,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:48:59,631 INFO L124 PetriNetUnfolderBase]: 203/729 cut-off events. [2024-01-27 14:48:59,631 INFO L125 PetriNetUnfolderBase]: For 425/425 co-relation queries the response was YES. [2024-01-27 14:48:59,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 729 events. 203/729 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4078 event pairs, 55 based on Foata normal form. 16/697 useless extension candidates. Maximal degree in co-relation 1713. Up to 235 conditions per place. [2024-01-27 14:48:59,634 INFO L140 encePairwiseOnDemand]: 77/91 looper letters, 62 selfloop transitions, 12 changer transitions 2/100 dead transitions. [2024-01-27 14:48:59,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 100 transitions, 485 flow [2024-01-27 14:48:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 14:48:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 14:48:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 271 transitions. [2024-01-27 14:48:59,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5956043956043956 [2024-01-27 14:48:59,636 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 258 flow. Second operand 5 states and 271 transitions. [2024-01-27 14:48:59,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 100 transitions, 485 flow [2024-01-27 14:48:59,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 475 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 14:48:59,639 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 313 flow [2024-01-27 14:48:59,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2024-01-27 14:48:59,639 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2024-01-27 14:48:59,640 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 313 flow [2024-01-27 14:48:59,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2024-01-27 14:48:59,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:48:59,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:48:59,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 14:48:59,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:48:59,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:48:59,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2095386262, now seen corresponding path program 1 times [2024-01-27 14:48:59,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:48:59,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199949815] [2024-01-27 14:48:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:48:59,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:48:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:48:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:48:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:48:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199949815] [2024-01-27 14:48:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199949815] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:48:59,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:48:59,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:48:59,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280176734] [2024-01-27 14:48:59,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:48:59,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:48:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:48:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:48:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:48:59,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 91 [2024-01-27 14:48:59,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2024-01-27 14:48:59,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:48:59,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 91 [2024-01-27 14:48:59,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:48:59,720 INFO L124 PetriNetUnfolderBase]: 35/228 cut-off events. [2024-01-27 14:48:59,721 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-01-27 14:48:59,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 228 events. 35/228 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 754 event pairs, 7 based on Foata normal form. 13/224 useless extension candidates. Maximal degree in co-relation 463. Up to 78 conditions per place. [2024-01-27 14:48:59,722 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 22 selfloop transitions, 3 changer transitions 7/62 dead transitions. [2024-01-27 14:48:59,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 62 transitions, 284 flow [2024-01-27 14:48:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:48:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:48:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-01-27 14:48:59,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7802197802197802 [2024-01-27 14:48:59,723 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 313 flow. Second operand 3 states and 213 transitions. [2024-01-27 14:48:59,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 62 transitions, 284 flow [2024-01-27 14:48:59,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 62 transitions, 204 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-01-27 14:48:59,725 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 125 flow [2024-01-27 14:48:59,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-01-27 14:48:59,727 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -22 predicate places. [2024-01-27 14:48:59,728 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 125 flow [2024-01-27 14:48:59,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2024-01-27 14:48:59,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:48:59,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:48:59,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 14:48:59,729 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:48:59,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:48:59,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1678375456, now seen corresponding path program 1 times [2024-01-27 14:48:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:48:59,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692198115] [2024-01-27 14:48:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:48:59,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:48:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:48:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:48:59,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:48:59,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692198115] [2024-01-27 14:48:59,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692198115] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:48:59,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:48:59,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 14:48:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086309195] [2024-01-27 14:48:59,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:48:59,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:48:59,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:48:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:48:59,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:48:59,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 91 [2024-01-27 14:48:59,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-01-27 14:48:59,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:48:59,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 91 [2024-01-27 14:48:59,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:48:59,843 INFO L124 PetriNetUnfolderBase]: 38/190 cut-off events. [2024-01-27 14:48:59,843 INFO L125 PetriNetUnfolderBase]: For 20/21 co-relation queries the response was YES. [2024-01-27 14:48:59,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 190 events. 38/190 cut-off events. For 20/21 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 508 event pairs, 12 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 332. Up to 60 conditions per place. [2024-01-27 14:48:59,844 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 28 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-01-27 14:48:59,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 54 transitions, 195 flow [2024-01-27 14:48:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:48:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:48:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 222 transitions. [2024-01-27 14:48:59,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6098901098901099 [2024-01-27 14:48:59,846 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 125 flow. Second operand 4 states and 222 transitions. [2024-01-27 14:48:59,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 54 transitions, 195 flow [2024-01-27 14:48:59,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 180 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-27 14:48:59,847 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 116 flow [2024-01-27 14:48:59,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-01-27 14:48:59,847 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -30 predicate places. [2024-01-27 14:48:59,848 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 116 flow [2024-01-27 14:48:59,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-01-27 14:48:59,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:48:59,848 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] [2024-01-27 14:48:59,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 14:48:59,848 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:48:59,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:48:59,849 INFO L85 PathProgramCache]: Analyzing trace with hash -20836348, now seen corresponding path program 1 times [2024-01-27 14:48:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:48:59,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144089437] [2024-01-27 14:48:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:48:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:48:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:48:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:48:59,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:48:59,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144089437] [2024-01-27 14:48:59,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144089437] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:48:59,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:48:59,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:48:59,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937838596] [2024-01-27 14:48:59,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:48:59,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:48:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:48:59,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:48:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:48:59,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 91 [2024-01-27 14:48:59,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2024-01-27 14:48:59,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:48:59,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 91 [2024-01-27 14:48:59,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:48:59,923 INFO L124 PetriNetUnfolderBase]: 35/171 cut-off events. [2024-01-27 14:48:59,924 INFO L125 PetriNetUnfolderBase]: For 9/10 co-relation queries the response was YES. [2024-01-27 14:48:59,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 171 events. 35/171 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 421 event pairs, 25 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 302. Up to 82 conditions per place. [2024-01-27 14:48:59,925 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 28 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-01-27 14:48:59,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 176 flow [2024-01-27 14:48:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:48:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:48:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-01-27 14:48:59,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6996336996336996 [2024-01-27 14:48:59,926 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 116 flow. Second operand 3 states and 191 transitions. [2024-01-27 14:48:59,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 176 flow [2024-01-27 14:48:59,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 14:48:59,927 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 106 flow [2024-01-27 14:48:59,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-01-27 14:48:59,928 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -33 predicate places. [2024-01-27 14:48:59,928 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 106 flow [2024-01-27 14:48:59,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2024-01-27 14:48:59,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:48:59,928 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] [2024-01-27 14:48:59,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 14:48:59,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:48:59,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:48:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1338677847, now seen corresponding path program 1 times [2024-01-27 14:48:59,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:48:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341198253] [2024-01-27 14:48:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:48:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:48:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:48:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:48:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:48:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341198253] [2024-01-27 14:48:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341198253] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:48:59,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:48:59,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 14:48:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222519595] [2024-01-27 14:48:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:48:59,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:48:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:48:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:48:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:49:00,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2024-01-27 14:49:00,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-01-27 14:49:00,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:49:00,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2024-01-27 14:49:00,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:49:00,058 INFO L124 PetriNetUnfolderBase]: 39/168 cut-off events. [2024-01-27 14:49:00,058 INFO L125 PetriNetUnfolderBase]: For 12/13 co-relation queries the response was YES. [2024-01-27 14:49:00,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 168 events. 39/168 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 385 event pairs, 25 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 300. Up to 82 conditions per place. [2024-01-27 14:49:00,059 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 30 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-01-27 14:49:00,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 186 flow [2024-01-27 14:49:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 14:49:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 14:49:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2024-01-27 14:49:00,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197802197802198 [2024-01-27 14:49:00,061 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 106 flow. Second operand 5 states and 282 transitions. [2024-01-27 14:49:00,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 186 flow [2024-01-27 14:49:00,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:49:00,062 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 110 flow [2024-01-27 14:49:00,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-01-27 14:49:00,062 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -33 predicate places. [2024-01-27 14:49:00,063 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 110 flow [2024-01-27 14:49:00,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-01-27 14:49:00,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:49:00,063 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] [2024-01-27 14:49:00,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 14:49:00,063 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr18ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:49:00,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:49:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash -243343357, now seen corresponding path program 1 times [2024-01-27 14:49:00,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:49:00,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084163253] [2024-01-27 14:49:00,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:49:00,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:49:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:49:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:49:00,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:49:00,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084163253] [2024-01-27 14:49:00,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084163253] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:49:00,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:49:00,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:49:00,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526496198] [2024-01-27 14:49:00,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:49:00,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:49:00,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:49:00,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:49:00,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:49:00,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 91 [2024-01-27 14:49:00,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-01-27 14:49:00,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:49:00,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 91 [2024-01-27 14:49:00,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:49:00,176 INFO L124 PetriNetUnfolderBase]: 28/156 cut-off events. [2024-01-27 14:49:00,176 INFO L125 PetriNetUnfolderBase]: For 20/21 co-relation queries the response was YES. [2024-01-27 14:49:00,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 156 events. 28/156 cut-off events. For 20/21 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 16 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 270. Up to 55 conditions per place. [2024-01-27 14:49:00,177 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 23 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-01-27 14:49:00,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 164 flow [2024-01-27 14:49:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:49:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:49:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2024-01-27 14:49:00,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7362637362637363 [2024-01-27 14:49:00,178 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 110 flow. Second operand 3 states and 201 transitions. [2024-01-27 14:49:00,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 164 flow [2024-01-27 14:49:00,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 152 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 14:49:00,179 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 102 flow [2024-01-27 14:49:00,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-01-27 14:49:00,180 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -36 predicate places. [2024-01-27 14:49:00,180 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 102 flow [2024-01-27 14:49:00,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-01-27 14:49:00,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:49:00,181 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, 1, 1] [2024-01-27 14:49:00,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 14:49:00,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr21ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-27 14:49:00,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:49:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash 463278289, now seen corresponding path program 1 times [2024-01-27 14:49:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:49:00,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651116172] [2024-01-27 14:49:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:49:00,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:49:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:49:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:49:00,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:49:00,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651116172] [2024-01-27 14:49:00,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651116172] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:49:00,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:49:00,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:49:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536202217] [2024-01-27 14:49:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:49:00,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:49:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:49:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:49:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:49:00,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 91 [2024-01-27 14:49:00,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-01-27 14:49:00,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:49:00,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 91 [2024-01-27 14:49:00,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:49:00,273 INFO L124 PetriNetUnfolderBase]: 26/155 cut-off events. [2024-01-27 14:49:00,274 INFO L125 PetriNetUnfolderBase]: For 16/17 co-relation queries the response was YES. [2024-01-27 14:49:00,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 155 events. 26/155 cut-off events. For 16/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 353 event pairs, 10 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 251. Up to 48 conditions per place. [2024-01-27 14:49:00,274 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2024-01-27 14:49:00,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 154 flow [2024-01-27 14:49:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:49:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:49:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2024-01-27 14:49:00,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7326007326007326 [2024-01-27 14:49:00,276 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 102 flow. Second operand 3 states and 200 transitions. [2024-01-27 14:49:00,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 154 flow [2024-01-27 14:49:00,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:49:00,276 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-01-27 14:49:00,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-01-27 14:49:00,277 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -37 predicate places. [2024-01-27 14:49:00,277 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-01-27 14:49:00,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-01-27 14:49:00,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 57 remaining) [2024-01-27 14:49:00,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (55 of 57 remaining) [2024-01-27 14:49:00,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 57 remaining) [2024-01-27 14:49:00,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 57 remaining) [2024-01-27 14:49:00,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 57 remaining) [2024-01-27 14:49:00,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (51 of 57 remaining) [2024-01-27 14:49:00,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 57 remaining) [2024-01-27 14:49:00,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 57 remaining) [2024-01-27 14:49:00,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 57 remaining) [2024-01-27 14:49:00,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 57 remaining) [2024-01-27 14:49:00,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 57 remaining) [2024-01-27 14:49:00,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 57 remaining) [2024-01-27 14:49:00,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 57 remaining) [2024-01-27 14:49:00,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 57 remaining) [2024-01-27 14:49:00,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 57 remaining) [2024-01-27 14:49:00,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (41 of 57 remaining) [2024-01-27 14:49:00,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 57 remaining) [2024-01-27 14:49:00,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 57 remaining) [2024-01-27 14:49:00,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 57 remaining) [2024-01-27 14:49:00,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 57 remaining) [2024-01-27 14:49:00,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 57 remaining) [2024-01-27 14:49:00,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr12ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 57 remaining) [2024-01-27 14:49:00,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr13ASSERT_VIOLATIONERROR_FUNCTION (34 of 57 remaining) [2024-01-27 14:49:00,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr14ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 57 remaining) [2024-01-27 14:49:00,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr15ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 57 remaining) [2024-01-27 14:49:00,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr16ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 57 remaining) [2024-01-27 14:49:00,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr17ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 57 remaining) [2024-01-27 14:49:00,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr18ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 57 remaining) [2024-01-27 14:49:00,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr19ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 57 remaining) [2024-01-27 14:49:00,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr20ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 57 remaining) [2024-01-27 14:49:00,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr21ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 57 remaining) [2024-01-27 14:49:00,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr22ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 57 remaining) [2024-01-27 14:49:00,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr23ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 57 remaining) [2024-01-27 14:49:00,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 57 remaining) [2024-01-27 14:49:00,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 57 remaining) [2024-01-27 14:49:00,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 57 remaining) [2024-01-27 14:49:00,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 57 remaining) [2024-01-27 14:49:00,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 57 remaining) [2024-01-27 14:49:00,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 57 remaining) [2024-01-27 14:49:00,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (17 of 57 remaining) [2024-01-27 14:49:00,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 57 remaining) [2024-01-27 14:49:00,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 57 remaining) [2024-01-27 14:49:00,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 57 remaining) [2024-01-27 14:49:00,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 57 remaining) [2024-01-27 14:49:00,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 57 remaining) [2024-01-27 14:49:00,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr12ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 57 remaining) [2024-01-27 14:49:00,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr13ASSERT_VIOLATIONERROR_FUNCTION (10 of 57 remaining) [2024-01-27 14:49:00,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr14ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 57 remaining) [2024-01-27 14:49:00,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr15ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 57 remaining) [2024-01-27 14:49:00,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr16ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 57 remaining) [2024-01-27 14:49:00,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr17ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 57 remaining) [2024-01-27 14:49:00,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr18ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 57 remaining) [2024-01-27 14:49:00,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr19ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 57 remaining) [2024-01-27 14:49:00,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr20ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 57 remaining) [2024-01-27 14:49:00,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr21ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 57 remaining) [2024-01-27 14:49:00,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr22ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 57 remaining) [2024-01-27 14:49:00,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr23ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 57 remaining) [2024-01-27 14:49:00,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 14:49:00,288 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:49:00,292 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 14:49:00,292 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 14:49:00,296 INFO L503 ceAbstractionStarter]: Automizer considered 28 witness invariants [2024-01-27 14:49:00,296 INFO L504 ceAbstractionStarter]: WitnessConsidered=28 [2024-01-27 14:49:00,296 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 02:49:00 BasicIcfg [2024-01-27 14:49:00,297 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 14:49:00,297 INFO L158 Benchmark]: Toolchain (without parser) took 3441.25ms. Allocated memory was 174.1MB in the beginning and 257.9MB in the end (delta: 83.9MB). Free memory was 116.4MB in the beginning and 182.9MB in the end (delta: -66.5MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2024-01-27 14:49:00,297 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory was 142.9MB in the beginning and 142.8MB in the end (delta: 137.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:49:00,297 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 119.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:49:00,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.01ms. Allocated memory is still 174.1MB. Free memory was 116.3MB in the beginning and 92.1MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-27 14:49:00,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.08ms. Allocated memory is still 174.1MB. Free memory was 92.1MB in the beginning and 89.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 14:49:00,298 INFO L158 Benchmark]: Boogie Preprocessor took 72.08ms. Allocated memory is still 174.1MB. Free memory was 89.0MB in the beginning and 86.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:49:00,298 INFO L158 Benchmark]: RCFGBuilder took 605.95ms. Allocated memory is still 174.1MB. Free memory was 86.5MB in the beginning and 135.4MB in the end (delta: -48.8MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2024-01-27 14:49:00,298 INFO L158 Benchmark]: TraceAbstraction took 2215.27ms. Allocated memory was 174.1MB in the beginning and 257.9MB in the end (delta: 83.9MB). Free memory was 134.8MB in the beginning and 182.9MB in the end (delta: -48.1MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2024-01-27 14:49:00,299 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory was 142.9MB in the beginning and 142.8MB in the end (delta: 137.6kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.11ms. Allocated memory is still 174.1MB. Free memory is still 119.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.01ms. Allocated memory is still 174.1MB. Free memory was 116.3MB in the beginning and 92.1MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.08ms. Allocated memory is still 174.1MB. Free memory was 92.1MB in the beginning and 89.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.08ms. Allocated memory is still 174.1MB. Free memory was 89.0MB in the beginning and 86.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 605.95ms. Allocated memory is still 174.1MB. Free memory was 86.5MB in the beginning and 135.4MB in the end (delta: -48.8MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2215.27ms. Allocated memory was 174.1MB in the beginning and 257.9MB in the end (delta: 83.9MB). Free memory was 134.8MB in the beginning and 182.9MB in the end (delta: -48.1MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 703]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 686]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 687]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 687]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 688]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 692]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 147 locations, 57 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 829 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 501 mSDsluCounter, 170 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 135 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1119 IncrementalHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 135 mSolverCounterUnsat, 129 mSDtfsCounter, 1119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=5, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 169 ConstructedInterpolants, 0 QuantifiedInterpolants, 278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 14:49:00,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE