./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_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_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_27-multiple-protecting2_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-59af5db-m [2024-02-02 09:17:36,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:17:36,381 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:17:36,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:17:36,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:17:36,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:17:36,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:17:36,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:17:36,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:17:36,421 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:17:36,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:17:36,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:17:36,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:17:36,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:17:36,424 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:17:36,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:17:36,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:17:36,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:17:36,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:17:36,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:17:36,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:17:36,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:17:36,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:17:36,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:17:36,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:17:36,427 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:17:36,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:17:36,427 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:17:36,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:17:36,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:17:36,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:17:36,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:17:36,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:17:36,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:17:36,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:17:36,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:17:36,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:17:36,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:17:36,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:17:36,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:17:36,431 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:17:36,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:17:36,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:17:36,432 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:17:36,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:17:36,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:17:36,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:17:36,754 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:17:36,755 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:17:36,756 INFO L431 ainManager$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_27-multiple-protecting2_true.yml/witness.yml [2024-02-02 09:17:36,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:17:36,894 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:17:36,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-02-02 09:17:38,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:17:38,480 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:17:38,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-02-02 09:17:38,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/922369d49/10274b3fc8ae49128a58fefa7384b4be/FLAG7b12a9762 [2024-02-02 09:17:38,756 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/922369d49/10274b3fc8ae49128a58fefa7384b4be [2024-02-02 09:17:38,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:17:38,758 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:17:38,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:17:38,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:17:38,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:17:38,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:36" (1/2) ... [2024-02-02 09:17:38,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6637375 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:17:38, skipping insertion in model container [2024-02-02 09:17:38,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:36" (1/2) ... [2024-02-02 09:17:38,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1abbb32f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:17:38, skipping insertion in model container [2024-02-02 09:17:38,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:38" (2/2) ... [2024-02-02 09:17:38,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6637375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:38, skipping insertion in model container [2024-02-02 09:17:38,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:38" (2/2) ... [2024-02-02 09:17:38,768 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:17:38,837 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:17:38,839 INFO L101 nessWitnessExtractor]: Location invariant before [L719-L719] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,839 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L693] (g1 == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,839 INFO L101 nessWitnessExtractor]: Location invariant before [L720-L720] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,839 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] ((g1 == 1) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,839 INFO L101 nessWitnessExtractor]: Location invariant before [L689-L689] ((g1 == 1) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,840 INFO L101 nessWitnessExtractor]: Location invariant before [L688-L688] ((g1 == 0) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,840 INFO L101 nessWitnessExtractor]: Location invariant before [L718-L718] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,841 INFO L101 nessWitnessExtractor]: Location invariant before [L722-L722] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,841 INFO L101 nessWitnessExtractor]: Location invariant before [L717-L717] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,841 INFO L101 nessWitnessExtractor]: Location invariant before [L701-L701] (g2 == 1) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,841 INFO L101 nessWitnessExtractor]: Location invariant before [L703-L703] ((g1 == 0) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,841 INFO L101 nessWitnessExtractor]: Location invariant before [L714-L714] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,841 INFO L101 nessWitnessExtractor]: Location invariant before [L704-L704] (g2 == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,842 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] g1 == 0 [2024-02-02 09:17:38,842 INFO L101 nessWitnessExtractor]: Location invariant before [L715-L715] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,842 INFO L101 nessWitnessExtractor]: Location invariant before [L700-L700] ((g1 == 0) && (g2 == 1)) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,842 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] (unsigned long )arg == 0UL [2024-02-02 09:17:38,842 INFO L101 nessWitnessExtractor]: Location invariant before [L698-L698] (g2 == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,842 INFO L101 nessWitnessExtractor]: Location invariant before [L687-L687] (g1 == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,843 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,843 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] g1 == 0 [2024-02-02 09:17:38,843 INFO L101 nessWitnessExtractor]: Location invariant before [L705-L705] (unsigned long )arg == 0UL [2024-02-02 09:17:38,843 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L692] ((g1 == 0) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,844 INFO L101 nessWitnessExtractor]: Location invariant before [L699-L699] ((g1 == 0) && (g2 == 0)) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,844 INFO L101 nessWitnessExtractor]: Location invariant before [L702-L702] ((g1 == 0) && (g2 == 1)) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,844 INFO L101 nessWitnessExtractor]: Location invariant before [L713-L713] g1 == 0 [2024-02-02 09:17:38,844 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (g1 == 1) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:38,844 INFO L101 nessWitnessExtractor]: Location invariant before [L710-L710] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,844 INFO L101 nessWitnessExtractor]: Location invariant before [L725-L725] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,845 INFO L101 nessWitnessExtractor]: Location invariant before [L723-L723] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,845 INFO L101 nessWitnessExtractor]: Location invariant before [L686-L686] (unsigned long )arg == 0UL [2024-02-02 09:17:38,845 INFO L101 nessWitnessExtractor]: Location invariant before [L694-L694] (unsigned long )arg == 0UL [2024-02-02 09:17:38,845 INFO L101 nessWitnessExtractor]: Location invariant before [L19-L19] (((g1 == 0) && (g2 == 0)) && (g1 == 0)) && (g2 == 0) [2024-02-02 09:17:38,845 INFO L101 nessWitnessExtractor]: Location invariant before [L716-L716] g1 == 0 [2024-02-02 09:17:38,845 INFO L101 nessWitnessExtractor]: Location invariant before [L726-L726] (g1 == 0) && (g2 == 0) [2024-02-02 09:17:38,883 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:17:39,054 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_27-multiple-protecting2_true.i[1097,1110] [2024-02-02 09:17:39,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:17:39,251 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:17:39,266 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_27-multiple-protecting2_true.i[1097,1110] [2024-02-02 09:17:39,266 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:17:39,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:17:39,403 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:17:39,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39 WrapperNode [2024-02-02 09:17:39,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:17:39,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:17:39,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:17:39,405 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:17:39,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,470 INFO L138 Inliner]: procedures = 164, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-02-02 09:17:39,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:17:39,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:17:39,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:17:39,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:17:39,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,506 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 2, 5, 5, 5, 2]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5, 0]. The 2 writes are split as follows [0, 1, 0, 0, 0, 1]. [2024-02-02 09:17:39,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,514 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:17:39,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:17:39,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:17:39,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:17:39,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (1/1) ... [2024-02-02 09:17:39,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:17:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:17:39,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 09:17:39,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 09:17:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:17:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:17:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-02 09:17:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:17:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-02 09:17:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:17:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:17:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:17:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-02 09:17:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-02 09:17:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:17:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:17:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:17:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:17:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:17:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:17:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-02 09:17:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:17:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:17:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:17:39,600 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:17:39,730 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:17:39,734 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:17:40,241 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:17:40,242 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:17:40,424 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:17:40,424 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:17:40,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:40 BoogieIcfgContainer [2024-02-02 09:17:40,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:17:40,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:17:40,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:17:40,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:17:40,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:36" (1/4) ... [2024-02-02 09:17:40,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e179b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:17:40, skipping insertion in model container [2024-02-02 09:17:40,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:17:38" (2/4) ... [2024-02-02 09:17:40,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e179b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:17:40, skipping insertion in model container [2024-02-02 09:17:40,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:39" (3/4) ... [2024-02-02 09:17:40,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e179b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:17:40, skipping insertion in model container [2024-02-02 09:17:40,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:40" (4/4) ... [2024-02-02 09:17:40,435 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-02-02 09:17:40,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:17:40,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-02-02 09:17:40,450 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:17:40,517 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-02 09:17:40,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 312 flow [2024-02-02 09:17:40,602 INFO L124 PetriNetUnfolderBase]: 4/147 cut-off events. [2024-02-02 09:17:40,602 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:17:40,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 147 events. 4/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 303 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2024-02-02 09:17:40,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 312 flow [2024-02-02 09:17:40,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 145 transitions, 299 flow [2024-02-02 09:17:40,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:17:40,626 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;@535b9b21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:17:40,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2024-02-02 09:17:40,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:17:40,629 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:17:40,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:17:40,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:40,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:17:40,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:17:40,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash 16376, now seen corresponding path program 1 times [2024-02-02 09:17:40,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:40,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160076248] [2024-02-02 09:17:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:40,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:40,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160076248] [2024-02-02 09:17:40,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160076248] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:40,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:40,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:17:40,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75875034] [2024-02-02 09:17:40,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:40,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:17:40,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:17:40,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:17:40,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 149 [2024-02-02 09:17:41,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 145 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:41,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:41,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 149 [2024-02-02 09:17:41,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:45,523 INFO L124 PetriNetUnfolderBase]: 16286/37468 cut-off events. [2024-02-02 09:17:45,524 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-02-02 09:17:45,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65018 conditions, 37468 events. 16286/37468 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 395402 event pairs, 8415 based on Foata normal form. 4321/39359 useless extension candidates. Maximal degree in co-relation 64850. Up to 15725 conditions per place. [2024-02-02 09:17:45,816 INFO L140 encePairwiseOnDemand]: 107/149 looper letters, 108 selfloop transitions, 18 changer transitions 0/191 dead transitions. [2024-02-02 09:17:45,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 191 transitions, 649 flow [2024-02-02 09:17:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:17:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:17:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-02-02 09:17:45,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7986577181208053 [2024-02-02 09:17:45,837 INFO L175 Difference]: Start difference. First operand has 148 places, 145 transitions, 299 flow. Second operand 3 states and 357 transitions. [2024-02-02 09:17:45,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 191 transitions, 649 flow [2024-02-02 09:17:45,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 191 transitions, 641 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:45,853 INFO L231 Difference]: Finished difference. Result has 148 places, 155 transitions, 454 flow [2024-02-02 09:17:45,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=148, PETRI_TRANSITIONS=155} [2024-02-02 09:17:45,860 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 0 predicate places. [2024-02-02 09:17:45,862 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 155 transitions, 454 flow [2024-02-02 09:17:45,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:45,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:45,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:17:45,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:17:45,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:17:45,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:45,870 INFO L85 PathProgramCache]: Analyzing trace with hash 488530577, now seen corresponding path program 1 times [2024-02-02 09:17:45,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:45,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455752360] [2024-02-02 09:17:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:45,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:46,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:46,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455752360] [2024-02-02 09:17:46,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455752360] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:46,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:46,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:46,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987458000] [2024-02-02 09:17:46,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:46,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:46,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:46,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:46,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:46,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 149 [2024-02-02 09:17:46,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 155 transitions, 454 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:46,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:46,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 149 [2024-02-02 09:17:46,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:49,339 INFO L124 PetriNetUnfolderBase]: 11973/33809 cut-off events. [2024-02-02 09:17:49,340 INFO L125 PetriNetUnfolderBase]: For 9650/9906 co-relation queries the response was YES. [2024-02-02 09:17:49,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63722 conditions, 33809 events. 11973/33809 cut-off events. For 9650/9906 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 397834 event pairs, 2735 based on Foata normal form. 474/31163 useless extension candidates. Maximal degree in co-relation 63551. Up to 16987 conditions per place. [2024-02-02 09:17:49,581 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 89 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2024-02-02 09:17:49,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 190 transitions, 740 flow [2024-02-02 09:17:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2024-02-02 09:17:49,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7634228187919463 [2024-02-02 09:17:49,585 INFO L175 Difference]: Start difference. First operand has 148 places, 155 transitions, 454 flow. Second operand 4 states and 455 transitions. [2024-02-02 09:17:49,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 190 transitions, 740 flow [2024-02-02 09:17:49,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 190 transitions, 692 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:49,623 INFO L231 Difference]: Finished difference. Result has 147 places, 153 transitions, 418 flow [2024-02-02 09:17:49,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=147, PETRI_TRANSITIONS=153} [2024-02-02 09:17:49,624 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -1 predicate places. [2024-02-02 09:17:49,624 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 153 transitions, 418 flow [2024-02-02 09:17:49,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:49,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:49,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:49,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:17:49,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:17:49,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1324322970, now seen corresponding path program 1 times [2024-02-02 09:17:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:49,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053465596] [2024-02-02 09:17:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:49,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:49,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:49,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053465596] [2024-02-02 09:17:49,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053465596] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:49,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:49,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:17:49,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766484640] [2024-02-02 09:17:49,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:49,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:49,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:49,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:49,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 149 [2024-02-02 09:17:49,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 153 transitions, 418 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:49,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:49,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 149 [2024-02-02 09:17:49,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:52,826 INFO L124 PetriNetUnfolderBase]: 12383/32881 cut-off events. [2024-02-02 09:17:52,827 INFO L125 PetriNetUnfolderBase]: For 3648/3690 co-relation queries the response was YES. [2024-02-02 09:17:52,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60063 conditions, 32881 events. 12383/32881 cut-off events. For 3648/3690 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 371758 event pairs, 9049 based on Foata normal form. 414/29643 useless extension candidates. Maximal degree in co-relation 60048. Up to 16903 conditions per place. [2024-02-02 09:17:53,062 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 98 selfloop transitions, 2 changer transitions 0/197 dead transitions. [2024-02-02 09:17:53,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 197 transitions, 731 flow [2024-02-02 09:17:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:53,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 464 transitions. [2024-02-02 09:17:53,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7785234899328859 [2024-02-02 09:17:53,064 INFO L175 Difference]: Start difference. First operand has 147 places, 153 transitions, 418 flow. Second operand 4 states and 464 transitions. [2024-02-02 09:17:53,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 197 transitions, 731 flow [2024-02-02 09:17:53,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 197 transitions, 728 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:53,073 INFO L231 Difference]: Finished difference. Result has 146 places, 151 transitions, 415 flow [2024-02-02 09:17:53,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=146, PETRI_TRANSITIONS=151} [2024-02-02 09:17:53,075 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, -2 predicate places. [2024-02-02 09:17:53,075 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 151 transitions, 415 flow [2024-02-02 09:17:53,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:53,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:53,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:53,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:17:53,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:17:53,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1829103239, now seen corresponding path program 1 times [2024-02-02 09:17:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:53,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264865636] [2024-02-02 09:17:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:53,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:53,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264865636] [2024-02-02 09:17:53,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264865636] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:53,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:53,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:17:53,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749924479] [2024-02-02 09:17:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:53,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:53,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:53,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:53,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:53,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 149 [2024-02-02 09:17:53,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 151 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:53,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:53,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 149 [2024-02-02 09:17:53,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:56,835 INFO L124 PetriNetUnfolderBase]: 22383/49203 cut-off events. [2024-02-02 09:17:56,836 INFO L125 PetriNetUnfolderBase]: For 9674/10209 co-relation queries the response was YES. [2024-02-02 09:17:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100451 conditions, 49203 events. 22383/49203 cut-off events. For 9674/10209 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 521071 event pairs, 5419 based on Foata normal form. 1242/48939 useless extension candidates. Maximal degree in co-relation 95460. Up to 19072 conditions per place. [2024-02-02 09:17:57,179 INFO L140 encePairwiseOnDemand]: 118/149 looper letters, 167 selfloop transitions, 24 changer transitions 0/254 dead transitions. [2024-02-02 09:17:57,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 254 transitions, 1093 flow [2024-02-02 09:17:57,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:17:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:17:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2024-02-02 09:17:57,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7550335570469798 [2024-02-02 09:17:57,187 INFO L175 Difference]: Start difference. First operand has 146 places, 151 transitions, 415 flow. Second operand 4 states and 450 transitions. [2024-02-02 09:17:57,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 254 transitions, 1093 flow [2024-02-02 09:17:57,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 254 transitions, 1086 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:57,193 INFO L231 Difference]: Finished difference. Result has 148 places, 168 transitions, 630 flow [2024-02-02 09:17:57,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=630, PETRI_PLACES=148, PETRI_TRANSITIONS=168} [2024-02-02 09:17:57,195 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 0 predicate places. [2024-02-02 09:17:57,196 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 168 transitions, 630 flow [2024-02-02 09:17:57,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:57,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:57,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:57,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:17:57,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:17:57,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:57,197 INFO L85 PathProgramCache]: Analyzing trace with hash -663369071, now seen corresponding path program 1 times [2024-02-02 09:17:57,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:57,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256650589] [2024-02-02 09:17:57,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:57,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:57,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256650589] [2024-02-02 09:17:57,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256650589] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:57,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:57,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:17:57,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804874999] [2024-02-02 09:17:57,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:57,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:17:57,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:17:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:17:57,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 149 [2024-02-02 09:17:57,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 168 transitions, 630 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:57,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:57,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 149 [2024-02-02 09:17:57,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:01,314 INFO L124 PetriNetUnfolderBase]: 20795/47496 cut-off events. [2024-02-02 09:18:01,314 INFO L125 PetriNetUnfolderBase]: For 31068/32245 co-relation queries the response was YES. [2024-02-02 09:18:01,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107117 conditions, 47496 events. 20795/47496 cut-off events. For 31068/32245 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 514285 event pairs, 5053 based on Foata normal form. 840/46477 useless extension candidates. Maximal degree in co-relation 107099. Up to 19117 conditions per place. [2024-02-02 09:18:01,605 INFO L140 encePairwiseOnDemand]: 128/149 looper letters, 160 selfloop transitions, 19 changer transitions 0/252 dead transitions. [2024-02-02 09:18:01,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 252 transitions, 1276 flow [2024-02-02 09:18:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:18:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:18:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2024-02-02 09:18:01,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7651006711409396 [2024-02-02 09:18:01,607 INFO L175 Difference]: Start difference. First operand has 148 places, 168 transitions, 630 flow. Second operand 4 states and 456 transitions. [2024-02-02 09:18:01,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 252 transitions, 1276 flow [2024-02-02 09:18:01,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 252 transitions, 1240 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:18:01,616 INFO L231 Difference]: Finished difference. Result has 149 places, 167 transitions, 686 flow [2024-02-02 09:18:01,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=686, PETRI_PLACES=149, PETRI_TRANSITIONS=167} [2024-02-02 09:18:01,617 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2024-02-02 09:18:01,618 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 167 transitions, 686 flow [2024-02-02 09:18:01,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:01,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:01,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:01,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:18:01,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:18:01,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:01,619 INFO L85 PathProgramCache]: Analyzing trace with hash -563861227, now seen corresponding path program 1 times [2024-02-02 09:18:01,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:01,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897419673] [2024-02-02 09:18:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:01,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:01,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897419673] [2024-02-02 09:18:01,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897419673] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:01,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:18:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394699664] [2024-02-02 09:18:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:18:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:18:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:18:01,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 149 [2024-02-02 09:18:01,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 167 transitions, 686 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:01,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:01,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 149 [2024-02-02 09:18:01,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:07,275 INFO L124 PetriNetUnfolderBase]: 28992/63725 cut-off events. [2024-02-02 09:18:07,276 INFO L125 PetriNetUnfolderBase]: For 39718/39819 co-relation queries the response was YES. [2024-02-02 09:18:07,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149076 conditions, 63725 events. 28992/63725 cut-off events. For 39718/39819 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 690685 event pairs, 7150 based on Foata normal form. 1094/63338 useless extension candidates. Maximal degree in co-relation 143487. Up to 18517 conditions per place. [2024-02-02 09:18:07,667 INFO L140 encePairwiseOnDemand]: 125/149 looper letters, 165 selfloop transitions, 40 changer transitions 0/260 dead transitions. [2024-02-02 09:18:07,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 260 transitions, 1327 flow [2024-02-02 09:18:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:18:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:18:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 419 transitions. [2024-02-02 09:18:07,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7030201342281879 [2024-02-02 09:18:07,670 INFO L175 Difference]: Start difference. First operand has 149 places, 167 transitions, 686 flow. Second operand 4 states and 419 transitions. [2024-02-02 09:18:07,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 260 transitions, 1327 flow [2024-02-02 09:18:07,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 260 transitions, 1306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:18:07,754 INFO L231 Difference]: Finished difference. Result has 152 places, 174 transitions, 832 flow [2024-02-02 09:18:07,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=832, PETRI_PLACES=152, PETRI_TRANSITIONS=174} [2024-02-02 09:18:07,755 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 4 predicate places. [2024-02-02 09:18:07,755 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 174 transitions, 832 flow [2024-02-02 09:18:07,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:07,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:07,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:07,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:18:07,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:18:07,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash -299828196, now seen corresponding path program 1 times [2024-02-02 09:18:07,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:07,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790867040] [2024-02-02 09:18:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:07,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:07,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:07,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790867040] [2024-02-02 09:18:07,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790867040] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:07,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:07,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:18:07,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948923513] [2024-02-02 09:18:07,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:07,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:18:07,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:18:07,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:18:07,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 149 [2024-02-02 09:18:07,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 174 transitions, 832 flow. Second operand has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:07,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:07,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 149 [2024-02-02 09:18:07,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:12,918 INFO L124 PetriNetUnfolderBase]: 25343/52863 cut-off events. [2024-02-02 09:18:12,927 INFO L125 PetriNetUnfolderBase]: For 71186/71189 co-relation queries the response was YES. [2024-02-02 09:18:13,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136066 conditions, 52863 events. 25343/52863 cut-off events. For 71186/71189 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 536714 event pairs, 4390 based on Foata normal form. 3384/55655 useless extension candidates. Maximal degree in co-relation 129977. Up to 15343 conditions per place. [2024-02-02 09:18:13,298 INFO L140 encePairwiseOnDemand]: 120/149 looper letters, 203 selfloop transitions, 25 changer transitions 0/272 dead transitions. [2024-02-02 09:18:13,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 272 transitions, 1408 flow [2024-02-02 09:18:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:18:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:18:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 498 transitions. [2024-02-02 09:18:13,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6684563758389261 [2024-02-02 09:18:13,300 INFO L175 Difference]: Start difference. First operand has 152 places, 174 transitions, 832 flow. Second operand 5 states and 498 transitions. [2024-02-02 09:18:13,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 272 transitions, 1408 flow [2024-02-02 09:18:13,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 272 transitions, 1367 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:18:13,320 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 636 flow [2024-02-02 09:18:13,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=636, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2024-02-02 09:18:13,324 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 2 predicate places. [2024-02-02 09:18:13,324 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 636 flow [2024-02-02 09:18:13,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:13,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:13,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:13,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:18:13,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:18:13,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:13,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1282848578, now seen corresponding path program 1 times [2024-02-02 09:18:13,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:13,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078227058] [2024-02-02 09:18:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:13,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:13,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:13,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078227058] [2024-02-02 09:18:13,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078227058] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:13,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:13,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:18:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634694588] [2024-02-02 09:18:13,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:13,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:18:13,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:18:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:18:13,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 149 [2024-02-02 09:18:13,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:13,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:13,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 149 [2024-02-02 09:18:13,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:18,569 INFO L124 PetriNetUnfolderBase]: 26046/55374 cut-off events. [2024-02-02 09:18:18,570 INFO L125 PetriNetUnfolderBase]: For 57879/58477 co-relation queries the response was YES. [2024-02-02 09:18:18,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139286 conditions, 55374 events. 26046/55374 cut-off events. For 57879/58477 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 570108 event pairs, 7776 based on Foata normal form. 1058/55039 useless extension candidates. Maximal degree in co-relation 139263. Up to 15898 conditions per place. [2024-02-02 09:18:18,896 INFO L140 encePairwiseOnDemand]: 125/149 looper letters, 161 selfloop transitions, 27 changer transitions 0/239 dead transitions. [2024-02-02 09:18:18,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 239 transitions, 1267 flow [2024-02-02 09:18:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:18:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:18:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 411 transitions. [2024-02-02 09:18:18,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6895973154362416 [2024-02-02 09:18:18,899 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 636 flow. Second operand 4 states and 411 transitions. [2024-02-02 09:18:18,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 239 transitions, 1267 flow [2024-02-02 09:18:18,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 239 transitions, 1207 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:18:18,942 INFO L231 Difference]: Finished difference. Result has 151 places, 157 transitions, 722 flow [2024-02-02 09:18:18,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=722, PETRI_PLACES=151, PETRI_TRANSITIONS=157} [2024-02-02 09:18:18,947 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 3 predicate places. [2024-02-02 09:18:18,948 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 157 transitions, 722 flow [2024-02-02 09:18:18,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:18,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:18,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:18,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:18:18,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:18:18,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:18,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1113599628, now seen corresponding path program 1 times [2024-02-02 09:18:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:18,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763299639] [2024-02-02 09:18:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:18,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:19,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:19,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763299639] [2024-02-02 09:18:19,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763299639] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:19,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:19,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:18:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427095398] [2024-02-02 09:18:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:19,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:18:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:18:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:18:19,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 149 [2024-02-02 09:18:19,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 157 transitions, 722 flow. Second operand has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:19,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:19,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 149 [2024-02-02 09:18:19,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:23,110 INFO L124 PetriNetUnfolderBase]: 20692/42373 cut-off events. [2024-02-02 09:18:23,111 INFO L125 PetriNetUnfolderBase]: For 66397/66857 co-relation queries the response was YES. [2024-02-02 09:18:23,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113620 conditions, 42373 events. 20692/42373 cut-off events. For 66397/66857 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 408965 event pairs, 5370 based on Foata normal form. 2110/43601 useless extension candidates. Maximal degree in co-relation 113595. Up to 14929 conditions per place. [2024-02-02 09:18:23,352 INFO L140 encePairwiseOnDemand]: 124/149 looper letters, 181 selfloop transitions, 14 changer transitions 4/247 dead transitions. [2024-02-02 09:18:23,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 247 transitions, 1222 flow [2024-02-02 09:18:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:18:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:18:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2024-02-02 09:18:23,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6456375838926175 [2024-02-02 09:18:23,353 INFO L175 Difference]: Start difference. First operand has 151 places, 157 transitions, 722 flow. Second operand 5 states and 481 transitions. [2024-02-02 09:18:23,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 247 transitions, 1222 flow [2024-02-02 09:18:23,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 247 transitions, 1201 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-02 09:18:23,374 INFO L231 Difference]: Finished difference. Result has 149 places, 140 transitions, 550 flow [2024-02-02 09:18:23,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=550, PETRI_PLACES=149, PETRI_TRANSITIONS=140} [2024-02-02 09:18:23,375 INFO L281 CegarLoopForPetriNet]: 148 programPoint places, 1 predicate places. [2024-02-02 09:18:23,375 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 140 transitions, 550 flow [2024-02-02 09:18:23,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:23,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:23,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:23,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:18:23,376 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 55 more)] === [2024-02-02 09:18:23,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:23,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1124207429, now seen corresponding path program 1 times [2024-02-02 09:18:23,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:23,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739994262] [2024-02-02 09:18:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:23,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:23,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:23,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739994262] [2024-02-02 09:18:23,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739994262] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:23,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:23,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:18:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802895862] [2024-02-02 09:18:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:23,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:18:23,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:23,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:18:23,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:18:23,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 149 [2024-02-02 09:18:23,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 140 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:23,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:23,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 149 [2024-02-02 09:18:23,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand