./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_25-struct_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_25-struct_nr_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8857f20b 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_25-struct_nr_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_25-struct_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-8857f20-m [2024-01-29 22:55:14,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 22:55:14,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 22:55:14,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 22:55:14,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 22:55:14,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 22:55:14,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 22:55:14,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 22:55:14,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 22:55:14,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 22:55:14,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 22:55:14,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 22:55:14,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 22:55:14,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 22:55:14,211 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 22:55:14,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 22:55:14,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 22:55:14,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 22:55:14,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 22:55:14,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 22:55:14,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 22:55:14,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 22:55:14,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 22:55:14,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 22:55:14,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 22:55:14,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 22:55:14,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 22:55:14,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 22:55:14,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 22:55:14,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 22:55:14,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 22:55:14,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 22:55:14,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:55:14,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 22:55:14,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 22:55:14,218 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 22:55:14,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 22:55:14,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 22:55:14,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 22:55:14,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 22:55:14,218 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 22:55:14,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 22:55:14,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 22:55:14,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 22:55:14,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 22:55:14,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 22:55:14,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 22:55:14,494 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 22:55:14,494 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 22:55:14,495 INFO L431 ainManager$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_25-struct_nr_true.yml/witness.yml [2024-01-29 22:55:14,613 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 22:55:14,614 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 22:55:14,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_25-struct_nr_true.i [2024-01-29 22:55:15,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 22:55:16,048 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 22:55:16,049 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_25-struct_nr_true.i [2024-01-29 22:55:16,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7c42e10/4f3fd4fb585c4a4497ccc8b1bd3dade6/FLAG0b553ab92 [2024-01-29 22:55:16,088 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7c42e10/4f3fd4fb585c4a4497ccc8b1bd3dade6 [2024-01-29 22:55:16,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 22:55:16,090 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 22:55:16,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 22:55:16,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 22:55:16,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 22:55:16,099 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:55:14" (1/2) ... [2024-01-29 22:55:16,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35389ffa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:16, skipping insertion in model container [2024-01-29 22:55:16,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:55:14" (1/2) ... [2024-01-29 22:55:16,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5872b8d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:55:16, skipping insertion in model container [2024-01-29 22:55:16,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:55:16" (2/2) ... [2024-01-29 22:55:16,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35389ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16, skipping insertion in model container [2024-01-29 22:55:16,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:55:16" (2/2) ... [2024-01-29 22:55:16,103 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 22:55:16,142 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 22:55:16,144 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] glob1 == 5 [2024-01-29 22:55:16,144 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] glob1 == 5 [2024-01-29 22:55:16,144 INFO L98 nessWitnessExtractor]: Location invariant before [L703-L703] glob1 == 6 [2024-01-29 22:55:16,144 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (glob1 == -10) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:16,144 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] glob1 == -10 [2024-01-29 22:55:16,145 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (glob1 == -10) && (t == 5) [2024-01-29 22:55:16,145 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] glob1 == 5 [2024-01-29 22:55:16,145 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] (t == 5) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:16,145 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] t == 5 [2024-01-29 22:55:16,146 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] ((0LL - (long long )glob1) + (long long )t >= 0LL) && (t == 5) [2024-01-29 22:55:16,146 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (0LL - (long long )glob1) + (long long )t >= 0LL [2024-01-29 22:55:16,146 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] ((0LL - (long long )glob1) + (long long )t >= 0LL) && ((long long )glob1 - (long long )t >= 0LL) [2024-01-29 22:55:16,146 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (((0LL - (long long )glob1) + (long long )t >= 0LL) && (t == 5)) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:16,146 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] ((0LL - (long long )glob1) + (long long )t >= 0LL) && (glob1 == 5) [2024-01-29 22:55:16,146 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] (glob1 == 5) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:16,146 INFO L98 nessWitnessExtractor]: Location invariant before [L689-L689] glob1 == 5 [2024-01-29 22:55:16,147 INFO L98 nessWitnessExtractor]: Location invariant before [L688-L688] (unsigned long )arg == 0UL [2024-01-29 22:55:16,147 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] glob1 == -10 [2024-01-29 22:55:16,147 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (glob1 == -10) && (t == 5) [2024-01-29 22:55:16,147 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (glob1 == -10) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:16,147 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (glob1 == 5) && (t == 5) [2024-01-29 22:55:16,148 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] ((glob1 == 5) && (t == 5)) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:16,148 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] glob1 == 5 [2024-01-29 22:55:16,148 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (glob1 == 5) && ((unsigned long )arg == 0UL) [2024-01-29 22:55:16,148 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] glob1 == 5 [2024-01-29 22:55:16,148 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (glob1 == 5) && (t == 5) [2024-01-29 22:55:16,148 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] glob1 == 5 [2024-01-29 22:55:16,149 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))) && ((glob1 == 5 || glob1 == 6) || ((((((-128 <= glob1 && -10 <= glob1) && glob1 <= 5) && glob1 <= 127) && glob1 % 15 == 5) && glob1 != 0) && (glob1 == -10 || glob1 == 5))) [2024-01-29 22:55:16,149 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)) [2024-01-29 22:55:16,149 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] glob1 == 6 [2024-01-29 22:55:16,250 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 22:55:16,417 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_25-struct_nr_true.i[1086,1099] [2024-01-29 22:55:16,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:55:16,556 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 22:55:16,567 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_25-struct_nr_true.i[1086,1099] [2024-01-29 22:55:16,568 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 [2024-01-29 22:55:16,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:55:16,705 INFO L206 MainTranslator]: Completed translation [2024-01-29 22:55:16,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16 WrapperNode [2024-01-29 22:55:16,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 22:55:16,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 22:55:16,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 22:55:16,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 22:55:16,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,769 INFO L138 Inliner]: procedures = 163, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 109 [2024-01-29 22:55:16,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 22:55:16,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 22:55:16,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 22:55:16,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 22:55:16,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,805 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]. [2024-01-29 22:55:16,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,823 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 22:55:16,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 22:55:16,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 22:55:16,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 22:55:16,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (1/1) ... [2024-01-29 22:55:16,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:55:16,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:55:16,869 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) [2024-01-29 22:55:16,915 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 [2024-01-29 22:55:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 22:55:16,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 22:55:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 22:55:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 22:55:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 22:55:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 22:55:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 22:55:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 22:55:16,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 22:55:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-29 22:55:16,930 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-29 22:55:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 22:55:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 22:55:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 22:55:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 22:55:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 22:55:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 22:55:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 22:55:16,932 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 22:55:17,065 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 22:55:17,068 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 22:55:17,292 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 22:55:17,292 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 22:55:17,354 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 22:55:17,354 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-29 22:55:17,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:55:17 BoogieIcfgContainer [2024-01-29 22:55:17,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 22:55:17,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 22:55:17,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 22:55:17,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 22:55:17,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:55:14" (1/4) ... [2024-01-29 22:55:17,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410ed12a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:55:17, skipping insertion in model container [2024-01-29 22:55:17,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:55:16" (2/4) ... [2024-01-29 22:55:17,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410ed12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:55:17, skipping insertion in model container [2024-01-29 22:55:17,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:55:16" (3/4) ... [2024-01-29 22:55:17,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410ed12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:55:17, skipping insertion in model container [2024-01-29 22:55:17,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:55:17" (4/4) ... [2024-01-29 22:55:17,361 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_25-struct_nr_true.i [2024-01-29 22:55:17,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 22:55:17,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-01-29 22:55:17,375 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 22:55:17,423 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-29 22:55:17,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 189 flow [2024-01-29 22:55:17,510 INFO L124 PetriNetUnfolderBase]: 4/90 cut-off events. [2024-01-29 22:55:17,510 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-29 22:55:17,514 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 101 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. [2024-01-29 22:55:17,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 91 transitions, 189 flow [2024-01-29 22:55:17,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 88 transitions, 179 flow [2024-01-29 22:55:17,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:55:17,529 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;@78aca94a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:55:17,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-01-29 22:55:17,533 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:55:17,534 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:55:17,534 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:55:17,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:17,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:55:17,535 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)] === [2024-01-29 22:55:17,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:17,540 INFO L85 PathProgramCache]: Analyzing trace with hash 9947, now seen corresponding path program 1 times [2024-01-29 22:55:17,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:17,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427524178] [2024-01-29 22:55:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:17,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:17,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:17,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427524178] [2024-01-29 22:55:17,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427524178] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:17,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:17,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:55:17,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18684172] [2024-01-29 22:55:17,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:17,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:55:17,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:55:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:55:17,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2024-01-29 22:55:17,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-01-29 22:55:17,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:17,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2024-01-29 22:55:17,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:18,012 INFO L124 PetriNetUnfolderBase]: 217/946 cut-off events. [2024-01-29 22:55:18,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:55:18,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 946 events. 217/946 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6139 event pairs, 114 based on Foata normal form. 111/932 useless extension candidates. Maximal degree in co-relation 1482. Up to 308 conditions per place. [2024-01-29 22:55:18,019 INFO L140 encePairwiseOnDemand]: 60/91 looper letters, 49 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-01-29 22:55:18,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 335 flow [2024-01-29 22:55:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:55:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:55:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-01-29 22:55:18,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7802197802197802 [2024-01-29 22:55:18,034 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 179 flow. Second operand 3 states and 213 transitions. [2024-01-29 22:55:18,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 335 flow [2024-01-29 22:55:18,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 104 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:55:18,043 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 286 flow [2024-01-29 22:55:18,045 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=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2024-01-29 22:55:18,048 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2024-01-29 22:55:18,049 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 286 flow [2024-01-29 22:55:18,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-01-29 22:55:18,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:18,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-29 22:55:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 22:55:18,050 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)] === [2024-01-29 22:55:18,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:18,053 INFO L85 PathProgramCache]: Analyzing trace with hash 9568624, now seen corresponding path program 1 times [2024-01-29 22:55:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:18,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414171654] [2024-01-29 22:55:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:18,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:18,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:18,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414171654] [2024-01-29 22:55:18,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414171654] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:18,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:18,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:18,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356550065] [2024-01-29 22:55:18,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:18,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:18,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:18,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:18,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 91 [2024-01-29 22:55:18,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 286 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) [2024-01-29 22:55:18,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:18,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 91 [2024-01-29 22:55:18,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:18,408 INFO L124 PetriNetUnfolderBase]: 251/982 cut-off events. [2024-01-29 22:55:18,408 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-01-29 22:55:18,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 982 events. 251/982 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6234 event pairs, 103 based on Foata normal form. 0/884 useless extension candidates. Maximal degree in co-relation 2033. Up to 290 conditions per place. [2024-01-29 22:55:18,413 INFO L140 encePairwiseOnDemand]: 72/91 looper letters, 72 selfloop transitions, 27 changer transitions 0/135 dead transitions. [2024-01-29 22:55:18,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 135 transitions, 636 flow [2024-01-29 22:55:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:55:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:55:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 297 transitions. [2024-01-29 22:55:18,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527472527472528 [2024-01-29 22:55:18,416 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 286 flow. Second operand 5 states and 297 transitions. [2024-01-29 22:55:18,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 135 transitions, 636 flow [2024-01-29 22:55:18,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 135 transitions, 592 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:55:18,421 INFO L231 Difference]: Finished difference. Result has 87 places, 99 transitions, 344 flow [2024-01-29 22:55:18,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=87, PETRI_TRANSITIONS=99} [2024-01-29 22:55:18,422 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -1 predicate places. [2024-01-29 22:55:18,422 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 99 transitions, 344 flow [2024-01-29 22:55:18,423 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) [2024-01-29 22:55:18,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:18,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:18,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 22:55:18,423 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)] === [2024-01-29 22:55:18,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:18,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2145600355, now seen corresponding path program 1 times [2024-01-29 22:55:18,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:18,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599060524] [2024-01-29 22:55:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:18,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:18,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599060524] [2024-01-29 22:55:18,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599060524] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:18,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:18,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:18,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72421400] [2024-01-29 22:55:18,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:18,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:18,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:18,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:18,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:18,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 91 [2024-01-29 22:55:18,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 99 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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) [2024-01-29 22:55:18,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:18,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 91 [2024-01-29 22:55:18,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:18,637 INFO L124 PetriNetUnfolderBase]: 159/790 cut-off events. [2024-01-29 22:55:18,637 INFO L125 PetriNetUnfolderBase]: For 145/148 co-relation queries the response was YES. [2024-01-29 22:55:18,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 790 events. 159/790 cut-off events. For 145/148 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5168 event pairs, 82 based on Foata normal form. 9/713 useless extension candidates. Maximal degree in co-relation 1528. Up to 307 conditions per place. [2024-01-29 22:55:18,640 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 38 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-01-29 22:55:18,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 106 transitions, 452 flow [2024-01-29 22:55:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2024-01-29 22:55:18,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-29 22:55:18,642 INFO L175 Difference]: Start difference. First operand has 87 places, 99 transitions, 344 flow. Second operand 4 states and 273 transitions. [2024-01-29 22:55:18,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 106 transitions, 452 flow [2024-01-29 22:55:18,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 106 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 22:55:18,645 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 346 flow [2024-01-29 22:55:18,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-01-29 22:55:18,646 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2024-01-29 22:55:18,646 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 346 flow [2024-01-29 22:55:18,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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) [2024-01-29 22:55:18,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:18,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:18,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 22:55:18,647 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)] === [2024-01-29 22:55:18,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1958554934, now seen corresponding path program 1 times [2024-01-29 22:55:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195660834] [2024-01-29 22:55:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:18,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195660834] [2024-01-29 22:55:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195660834] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:18,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:18,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:55:18,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835018802] [2024-01-29 22:55:18,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:18,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:18,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:18,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 91 [2024-01-29 22:55:18,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2024-01-29 22:55:18,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:18,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 91 [2024-01-29 22:55:18,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:18,996 INFO L124 PetriNetUnfolderBase]: 176/738 cut-off events. [2024-01-29 22:55:19,007 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-01-29 22:55:19,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 738 events. 176/738 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4289 event pairs, 110 based on Foata normal form. 105/792 useless extension candidates. Maximal degree in co-relation 1618. Up to 276 conditions per place. [2024-01-29 22:55:19,010 INFO L140 encePairwiseOnDemand]: 68/91 looper letters, 48 selfloop transitions, 7 changer transitions 1/89 dead transitions. [2024-01-29 22:55:19,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 89 transitions, 374 flow [2024-01-29 22:55:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2024-01-29 22:55:19,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-01-29 22:55:19,011 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 346 flow. Second operand 4 states and 231 transitions. [2024-01-29 22:55:19,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 89 transitions, 374 flow [2024-01-29 22:55:19,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 366 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 22:55:19,014 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 264 flow [2024-01-29 22:55:19,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-01-29 22:55:19,015 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -1 predicate places. [2024-01-29 22:55:19,015 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 264 flow [2024-01-29 22:55:19,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2024-01-29 22:55:19,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:19,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:19,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 22:55:19,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:19,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:19,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1957723776, now seen corresponding path program 1 times [2024-01-29 22:55:19,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:19,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077699208] [2024-01-29 22:55:19,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:19,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:19,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:19,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077699208] [2024-01-29 22:55:19,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077699208] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:19,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:19,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:55:19,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816199724] [2024-01-29 22:55:19,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:19,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:19,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:19,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:19,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2024-01-29 22:55:19,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-01-29 22:55:19,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:19,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2024-01-29 22:55:19,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:19,308 INFO L124 PetriNetUnfolderBase]: 227/871 cut-off events. [2024-01-29 22:55:19,309 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-01-29 22:55:19,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 871 events. 227/871 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5282 event pairs, 40 based on Foata normal form. 14/843 useless extension candidates. Maximal degree in co-relation 2097. Up to 244 conditions per place. [2024-01-29 22:55:19,313 INFO L140 encePairwiseOnDemand]: 77/91 looper letters, 63 selfloop transitions, 13 changer transitions 2/109 dead transitions. [2024-01-29 22:55:19,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 109 transitions, 512 flow [2024-01-29 22:55:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-01-29 22:55:19,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6373626373626373 [2024-01-29 22:55:19,315 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 264 flow. Second operand 4 states and 232 transitions. [2024-01-29 22:55:19,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 109 transitions, 512 flow [2024-01-29 22:55:19,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 109 transitions, 490 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:55:19,318 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 331 flow [2024-01-29 22:55:19,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2024-01-29 22:55:19,319 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2024-01-29 22:55:19,319 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 331 flow [2024-01-29 22:55:19,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-01-29 22:55:19,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:19,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:19,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 22:55:19,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:19,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:19,320 INFO L85 PathProgramCache]: Analyzing trace with hash 559895288, now seen corresponding path program 1 times [2024-01-29 22:55:19,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:19,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800737925] [2024-01-29 22:55:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:19,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:19,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:19,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800737925] [2024-01-29 22:55:19,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800737925] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:19,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:19,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:55:19,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308872713] [2024-01-29 22:55:19,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:19,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:19,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:19,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:19,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 91 [2024-01-29 22:55:19,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-01-29 22:55:19,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:19,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 91 [2024-01-29 22:55:19,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:19,549 INFO L124 PetriNetUnfolderBase]: 309/1019 cut-off events. [2024-01-29 22:55:19,550 INFO L125 PetriNetUnfolderBase]: For 580/588 co-relation queries the response was YES. [2024-01-29 22:55:19,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 1019 events. 309/1019 cut-off events. For 580/588 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6131 event pairs, 79 based on Foata normal form. 40/1024 useless extension candidates. Maximal degree in co-relation 2602. Up to 294 conditions per place. [2024-01-29 22:55:19,554 INFO L140 encePairwiseOnDemand]: 72/91 looper letters, 75 selfloop transitions, 18 changer transitions 1/119 dead transitions. [2024-01-29 22:55:19,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 119 transitions, 619 flow [2024-01-29 22:55:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2024-01-29 22:55:19,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-01-29 22:55:19,556 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 331 flow. Second operand 4 states and 224 transitions. [2024-01-29 22:55:19,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 119 transitions, 619 flow [2024-01-29 22:55:19,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 119 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:55:19,559 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 434 flow [2024-01-29 22:55:19,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=434, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-01-29 22:55:19,560 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2024-01-29 22:55:19,560 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 434 flow [2024-01-29 22:55:19,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-01-29 22:55:19,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:19,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:19,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 22:55:19,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:19,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1196023040, now seen corresponding path program 1 times [2024-01-29 22:55:19,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:19,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693224359] [2024-01-29 22:55:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:19,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:19,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693224359] [2024-01-29 22:55:19,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693224359] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:19,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:19,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:19,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997765030] [2024-01-29 22:55:19,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:19,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:55:19,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:19,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:55:19,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:55:19,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 91 [2024-01-29 22:55:19,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 434 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) [2024-01-29 22:55:19,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:19,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 91 [2024-01-29 22:55:19,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:19,654 INFO L124 PetriNetUnfolderBase]: 36/280 cut-off events. [2024-01-29 22:55:19,654 INFO L125 PetriNetUnfolderBase]: For 243/244 co-relation queries the response was YES. [2024-01-29 22:55:19,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 280 events. 36/280 cut-off events. For 243/244 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1079 event pairs, 7 based on Foata normal form. 14/284 useless extension candidates. Maximal degree in co-relation 668. Up to 87 conditions per place. [2024-01-29 22:55:19,655 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 25 selfloop transitions, 4 changer transitions 2/73 dead transitions. [2024-01-29 22:55:19,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 379 flow [2024-01-29 22:55:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:55:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:55:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-01-29 22:55:19,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7802197802197802 [2024-01-29 22:55:19,657 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 434 flow. Second operand 3 states and 213 transitions. [2024-01-29 22:55:19,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 379 flow [2024-01-29 22:55:19,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 282 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-01-29 22:55:19,659 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 213 flow [2024-01-29 22:55:19,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2024-01-29 22:55:19,660 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -10 predicate places. [2024-01-29 22:55:19,660 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 213 flow [2024-01-29 22:55:19,660 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) [2024-01-29 22:55:19,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:19,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:19,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 22:55:19,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:19,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash -339825315, now seen corresponding path program 1 times [2024-01-29 22:55:19,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:19,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249635059] [2024-01-29 22:55:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:19,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:19,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:19,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249635059] [2024-01-29 22:55:19,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249635059] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:19,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:19,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:55:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440306345] [2024-01-29 22:55:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:19,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:19,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:19,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2024-01-29 22:55:19,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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) [2024-01-29 22:55:19,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:19,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2024-01-29 22:55:19,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:19,811 INFO L124 PetriNetUnfolderBase]: 54/275 cut-off events. [2024-01-29 22:55:19,811 INFO L125 PetriNetUnfolderBase]: For 119/120 co-relation queries the response was YES. [2024-01-29 22:55:19,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 275 events. 54/275 cut-off events. For 119/120 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 918 event pairs, 17 based on Foata normal form. 6/271 useless extension candidates. Maximal degree in co-relation 559. Up to 103 conditions per place. [2024-01-29 22:55:19,813 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 39 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-01-29 22:55:19,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 317 flow [2024-01-29 22:55:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2024-01-29 22:55:19,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6620879120879121 [2024-01-29 22:55:19,814 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 213 flow. Second operand 4 states and 241 transitions. [2024-01-29 22:55:19,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 317 flow [2024-01-29 22:55:19,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 305 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:55:19,816 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 203 flow [2024-01-29 22:55:19,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2024-01-29 22:55:19,818 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -15 predicate places. [2024-01-29 22:55:19,818 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 203 flow [2024-01-29 22:55:19,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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) [2024-01-29 22:55:19,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:19,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:19,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 22:55:19,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:19,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash -154570081, now seen corresponding path program 1 times [2024-01-29 22:55:19,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:19,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652998612] [2024-01-29 22:55:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:19,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:19,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:19,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652998612] [2024-01-29 22:55:19,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652998612] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:19,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:19,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477027344] [2024-01-29 22:55:19,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:19,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 22:55:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 22:55:19,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-29 22:55:19,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 91 [2024-01-29 22:55:19,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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) [2024-01-29 22:55:19,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:19,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 91 [2024-01-29 22:55:19,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:20,029 INFO L124 PetriNetUnfolderBase]: 88/319 cut-off events. [2024-01-29 22:55:20,029 INFO L125 PetriNetUnfolderBase]: For 101/103 co-relation queries the response was YES. [2024-01-29 22:55:20,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 319 events. 88/319 cut-off events. For 101/103 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1047 event pairs, 22 based on Foata normal form. 7/326 useless extension candidates. Maximal degree in co-relation 719. Up to 84 conditions per place. [2024-01-29 22:55:20,030 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 52 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2024-01-29 22:55:20,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 364 flow [2024-01-29 22:55:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:55:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:55:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-01-29 22:55:20,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-01-29 22:55:20,032 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 203 flow. Second operand 5 states and 190 transitions. [2024-01-29 22:55:20,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 364 flow [2024-01-29 22:55:20,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 77 transitions, 352 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:55:20,034 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 218 flow [2024-01-29 22:55:20,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-01-29 22:55:20,035 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -14 predicate places. [2024-01-29 22:55:20,035 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 218 flow [2024-01-29 22:55:20,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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) [2024-01-29 22:55:20,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:20,036 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] [2024-01-29 22:55:20,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 22:55:20,036 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:20,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:20,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1782020033, now seen corresponding path program 1 times [2024-01-29 22:55:20,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:20,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455597731] [2024-01-29 22:55:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:20,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:20,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455597731] [2024-01-29 22:55:20,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455597731] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:20,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:20,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:20,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674176888] [2024-01-29 22:55:20,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:20,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:20,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:20,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:20,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:20,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 91 [2024-01-29 22:55:20,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 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) [2024-01-29 22:55:20,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:20,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 91 [2024-01-29 22:55:20,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:20,201 INFO L124 PetriNetUnfolderBase]: 67/266 cut-off events. [2024-01-29 22:55:20,201 INFO L125 PetriNetUnfolderBase]: For 150/151 co-relation queries the response was YES. [2024-01-29 22:55:20,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 266 events. 67/266 cut-off events. For 150/151 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 812 event pairs, 22 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 617. Up to 113 conditions per place. [2024-01-29 22:55:20,202 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-01-29 22:55:20,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 342 flow [2024-01-29 22:55:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-01-29 22:55:20,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741758241758241 [2024-01-29 22:55:20,203 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 218 flow. Second operand 4 states and 209 transitions. [2024-01-29 22:55:20,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 342 flow [2024-01-29 22:55:20,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 312 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-29 22:55:20,204 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 190 flow [2024-01-29 22:55:20,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-01-29 22:55:20,207 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -19 predicate places. [2024-01-29 22:55:20,207 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 190 flow [2024-01-29 22:55:20,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 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) [2024-01-29 22:55:20,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:20,210 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] [2024-01-29 22:55:20,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 22:55:20,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:20,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -668145844, now seen corresponding path program 1 times [2024-01-29 22:55:20,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:20,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750053891] [2024-01-29 22:55:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750053891] [2024-01-29 22:55:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750053891] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:20,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:20,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032356986] [2024-01-29 22:55:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:20,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:20,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:20,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2024-01-29 22:55:20,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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) [2024-01-29 22:55:20,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:20,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2024-01-29 22:55:20,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:20,395 INFO L124 PetriNetUnfolderBase]: 63/265 cut-off events. [2024-01-29 22:55:20,395 INFO L125 PetriNetUnfolderBase]: For 93/95 co-relation queries the response was YES. [2024-01-29 22:55:20,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 265 events. 63/265 cut-off events. For 93/95 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 811 event pairs, 12 based on Foata normal form. 4/268 useless extension candidates. Maximal degree in co-relation 575. Up to 95 conditions per place. [2024-01-29 22:55:20,396 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 47 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2024-01-29 22:55:20,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 335 flow [2024-01-29 22:55:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:20,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2024-01-29 22:55:20,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659340659340659 [2024-01-29 22:55:20,411 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 190 flow. Second operand 4 states and 206 transitions. [2024-01-29 22:55:20,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 335 flow [2024-01-29 22:55:20,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 321 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 22:55:20,412 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 212 flow [2024-01-29 22:55:20,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-01-29 22:55:20,413 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -20 predicate places. [2024-01-29 22:55:20,413 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 212 flow [2024-01-29 22:55:20,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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) [2024-01-29 22:55:20,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:20,413 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] [2024-01-29 22:55:20,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 22:55:20,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr12ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:20,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1170686749, now seen corresponding path program 1 times [2024-01-29 22:55:20,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:20,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324125252] [2024-01-29 22:55:20,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:20,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:20,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:20,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324125252] [2024-01-29 22:55:20,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324125252] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:20,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:20,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371734493] [2024-01-29 22:55:20,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:20,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:20,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2024-01-29 22:55:20,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2024-01-29 22:55:20,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:20,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2024-01-29 22:55:20,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:20,614 INFO L124 PetriNetUnfolderBase]: 63/255 cut-off events. [2024-01-29 22:55:20,615 INFO L125 PetriNetUnfolderBase]: For 131/133 co-relation queries the response was YES. [2024-01-29 22:55:20,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 255 events. 63/255 cut-off events. For 131/133 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 758 event pairs, 12 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 595. Up to 127 conditions per place. [2024-01-29 22:55:20,616 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 48 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-01-29 22:55:20,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 334 flow [2024-01-29 22:55:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2024-01-29 22:55:20,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-01-29 22:55:20,617 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 212 flow. Second operand 4 states and 221 transitions. [2024-01-29 22:55:20,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 334 flow [2024-01-29 22:55:20,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:55:20,618 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 208 flow [2024-01-29 22:55:20,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-01-29 22:55:20,619 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -21 predicate places. [2024-01-29 22:55:20,619 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 208 flow [2024-01-29 22:55:20,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2024-01-29 22:55:20,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:20,621 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] [2024-01-29 22:55:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 22:55:20,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr17ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:20,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash -341926902, now seen corresponding path program 1 times [2024-01-29 22:55:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:20,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879726871] [2024-01-29 22:55:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:20,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:20,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879726871] [2024-01-29 22:55:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879726871] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:20,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:20,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:55:20,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699640148] [2024-01-29 22:55:20,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:20,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:55:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:20,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:55:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:55:20,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 91 [2024-01-29 22:55:20,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-01-29 22:55:20,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:20,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 91 [2024-01-29 22:55:20,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:20,827 INFO L124 PetriNetUnfolderBase]: 70/264 cut-off events. [2024-01-29 22:55:20,827 INFO L125 PetriNetUnfolderBase]: For 119/120 co-relation queries the response was YES. [2024-01-29 22:55:20,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 264 events. 70/264 cut-off events. For 119/120 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 783 event pairs, 20 based on Foata normal form. 4/268 useless extension candidates. Maximal degree in co-relation 622. Up to 104 conditions per place. [2024-01-29 22:55:20,829 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 50 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-01-29 22:55:20,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 352 flow [2024-01-29 22:55:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:55:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:55:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-01-29 22:55:20,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-01-29 22:55:20,830 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 208 flow. Second operand 4 states and 195 transitions. [2024-01-29 22:55:20,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 352 flow [2024-01-29 22:55:20,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 344 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:55:20,835 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 224 flow [2024-01-29 22:55:20,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-01-29 22:55:20,836 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -21 predicate places. [2024-01-29 22:55:20,836 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 224 flow [2024-01-29 22:55:20,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-01-29 22:55:20,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:55:20,837 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] [2024-01-29 22:55:20,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-29 22:55:20,837 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr18ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-29 22:55:20,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:55:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2009798958, now seen corresponding path program 1 times [2024-01-29 22:55:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:55:20,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216502238] [2024-01-29 22:55:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:55:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:55:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:55:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:55:20,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:55:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216502238] [2024-01-29 22:55:20,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216502238] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:55:20,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:55:20,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:55:20,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724800705] [2024-01-29 22:55:20,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:55:20,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 22:55:20,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:55:20,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 22:55:20,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-29 22:55:21,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 91 [2024-01-29 22:55:21,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-01-29 22:55:21,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:55:21,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 91 [2024-01-29 22:55:21,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:55:21,087 INFO L124 PetriNetUnfolderBase]: 78/269 cut-off events. [2024-01-29 22:55:21,087 INFO L125 PetriNetUnfolderBase]: For 182/184 co-relation queries the response was YES. [2024-01-29 22:55:21,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 269 events. 78/269 cut-off events. For 182/184 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 777 event pairs, 16 based on Foata normal form. 17/286 useless extension candidates. Maximal degree in co-relation 670. Up to 152 conditions per place. [2024-01-29 22:55:21,088 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2024-01-29 22:55:21,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 386 flow [2024-01-29 22:55:21,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:55:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:55:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2024-01-29 22:55:21,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2024-01-29 22:55:21,089 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 224 flow. Second operand 5 states and 252 transitions. [2024-01-29 22:55:21,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 386 flow [2024-01-29 22:55:21,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 373 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:55:21,090 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2024-01-29 22:55:21,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2024-01-29 22:55:21,091 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -22 predicate places. [2024-01-29 22:55:21,091 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2024-01-29 22:55:21,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-01-29 22:55:21,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 57 remaining) [2024-01-29 22:55:21,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (55 of 57 remaining) [2024-01-29 22:55:21,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 57 remaining) [2024-01-29 22:55:21,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 57 remaining) [2024-01-29 22:55:21,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 57 remaining) [2024-01-29 22:55:21,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (51 of 57 remaining) [2024-01-29 22:55:21,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 57 remaining) [2024-01-29 22:55:21,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 57 remaining) [2024-01-29 22:55:21,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 57 remaining) [2024-01-29 22:55:21,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 57 remaining) [2024-01-29 22:55:21,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 57 remaining) [2024-01-29 22:55:21,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 57 remaining) [2024-01-29 22:55:21,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 57 remaining) [2024-01-29 22:55:21,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 57 remaining) [2024-01-29 22:55:21,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 57 remaining) [2024-01-29 22:55:21,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (41 of 57 remaining) [2024-01-29 22:55:21,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 57 remaining) [2024-01-29 22:55:21,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 57 remaining) [2024-01-29 22:55:21,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 57 remaining) [2024-01-29 22:55:21,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 57 remaining) [2024-01-29 22:55:21,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 57 remaining) [2024-01-29 22:55:21,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr12ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 57 remaining) [2024-01-29 22:55:21,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr13ASSERT_VIOLATIONERROR_FUNCTION (34 of 57 remaining) [2024-01-29 22:55:21,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr14ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 57 remaining) [2024-01-29 22:55:21,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr15ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 57 remaining) [2024-01-29 22:55:21,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr16ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 57 remaining) [2024-01-29 22:55:21,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr17ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 57 remaining) [2024-01-29 22:55:21,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr18ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 57 remaining) [2024-01-29 22:55:21,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr19ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 57 remaining) [2024-01-29 22:55:21,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr20ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 57 remaining) [2024-01-29 22:55:21,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr21ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 57 remaining) [2024-01-29 22:55:21,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr22ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 57 remaining) [2024-01-29 22:55:21,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr23ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 57 remaining) [2024-01-29 22:55:21,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 57 remaining) [2024-01-29 22:55:21,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 57 remaining) [2024-01-29 22:55:21,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 57 remaining) [2024-01-29 22:55:21,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 57 remaining) [2024-01-29 22:55:21,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 57 remaining) [2024-01-29 22:55:21,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 57 remaining) [2024-01-29 22:55:21,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONERROR_FUNCTION (17 of 57 remaining) [2024-01-29 22:55:21,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 57 remaining) [2024-01-29 22:55:21,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 57 remaining) [2024-01-29 22:55:21,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 57 remaining) [2024-01-29 22:55:21,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 57 remaining) [2024-01-29 22:55:21,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 57 remaining) [2024-01-29 22:55:21,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr12ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 57 remaining) [2024-01-29 22:55:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr13ASSERT_VIOLATIONERROR_FUNCTION (10 of 57 remaining) [2024-01-29 22:55:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr14ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 57 remaining) [2024-01-29 22:55:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr15ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 57 remaining) [2024-01-29 22:55:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr16ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 57 remaining) [2024-01-29 22:55:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr17ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 57 remaining) [2024-01-29 22:55:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr18ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 57 remaining) [2024-01-29 22:55:21,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr19ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 57 remaining) [2024-01-29 22:55:21,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr20ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 57 remaining) [2024-01-29 22:55:21,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr21ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 57 remaining) [2024-01-29 22:55:21,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr22ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 57 remaining) [2024-01-29 22:55:21,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr23ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 57 remaining) [2024-01-29 22:55:21,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-29 22:55:21,103 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:55:21,108 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-29 22:55:21,108 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-29 22:55:21,112 INFO L503 ceAbstractionStarter]: Automizer considered 28 witness invariants [2024-01-29 22:55:21,112 INFO L504 ceAbstractionStarter]: WitnessConsidered=28 [2024-01-29 22:55:21,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 10:55:21 BasicIcfg [2024-01-29 22:55:21,114 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-29 22:55:21,114 INFO L158 Benchmark]: Toolchain (without parser) took 5024.15ms. Allocated memory was 159.4MB in the beginning and 268.4MB in the end (delta: 109.1MB). Free memory was 82.5MB in the beginning and 127.2MB in the end (delta: -44.7MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2024-01-29 22:55:21,114 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 22:55:21,114 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 129.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 22:55:21,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.32ms. Allocated memory was 159.4MB in the beginning and 195.0MB in the end (delta: 35.7MB). Free memory was 82.4MB in the beginning and 143.7MB in the end (delta: -61.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-01-29 22:55:21,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.12ms. Allocated memory is still 195.0MB. Free memory was 143.7MB in the beginning and 141.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 22:55:21,115 INFO L158 Benchmark]: Boogie Preprocessor took 65.02ms. Allocated memory is still 195.0MB. Free memory was 141.6MB in the beginning and 138.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-29 22:55:21,115 INFO L158 Benchmark]: RCFGBuilder took 518.67ms. Allocated memory is still 195.0MB. Free memory was 138.7MB in the beginning and 112.2MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-29 22:55:21,115 INFO L158 Benchmark]: TraceAbstraction took 3757.53ms. Allocated memory was 195.0MB in the beginning and 268.4MB in the end (delta: 73.4MB). Free memory was 111.4MB in the beginning and 127.2MB in the end (delta: -15.8MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2024-01-29 22:55:21,116 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 129.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.32ms. Allocated memory was 159.4MB in the beginning and 195.0MB in the end (delta: 35.7MB). Free memory was 82.4MB in the beginning and 143.7MB in the end (delta: -61.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.12ms. Allocated memory is still 195.0MB. Free memory was 143.7MB in the beginning and 141.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.02ms. Allocated memory is still 195.0MB. Free memory was 141.6MB in the beginning and 138.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 518.67ms. Allocated memory is still 195.0MB. Free memory was 138.7MB in the beginning and 112.2MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3757.53ms. Allocated memory was 195.0MB in the beginning and 268.4MB in the end (delta: 73.4MB). Free memory was 111.4MB in the beginning and 127.2MB in the end (delta: -15.8MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 699]: 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: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds 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: 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: 704]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 705]: 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: 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: 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: 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 - PositiveResult [Line: 693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 694]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 694]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 694]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 694]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 694]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 695]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 695]: 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: 3.6s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1862 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1112 mSDsluCounter, 581 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 187 mSDsCounter, 309 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2165 IncrementalHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 309 mSolverCounterUnsat, 394 mSDtfsCounter, 2165 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=434occurred in iteration=6, InterpolantAutomatonStates: 57, 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, 0.8s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 1198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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! [2024-01-29 22:55:21,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE