./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/13-privatized_24-multiple-protecting_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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_24-multiple-protecting_true.i ./goblint.2024-06-19_11-23-25.files/protection/13-privatized_24-multiple-protecting_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 16:04:53,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:04:53,939 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:04:53,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:04:53,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:04:53,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:04:53,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:04:53,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:04:53,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:04:53,986 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:04:53,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:04:53,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:04:53,988 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:04:53,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:04:53,989 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:04:53,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:04:53,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:04:53,990 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:04:53,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:04:53,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:04:53,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:04:53,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:04:53,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:04:53,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:04:53,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:04:53,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:04:53,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:04:53,992 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:04:53,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:04:53,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:04:53,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:04:53,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:04:53,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:04:53,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:04:53,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:04:53,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:04:53,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:04:53,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:04:53,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:04:53,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:04:53,996 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:04:53,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:04:53,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:04:53,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:04:54,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:04:54,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:04:54,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:04:54,267 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:04:54,267 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:04:54,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2024-06-21 16:04:55,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:04:55,644 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:04:55,644 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2024-06-21 16:04:55,657 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51f2bb21/54a065681fcc47ec91f08b5478707fae/FLAGb9c4dadff [2024-06-21 16:04:55,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51f2bb21/54a065681fcc47ec91f08b5478707fae [2024-06-21 16:04:55,672 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:04:55,673 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:04:55,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/13-privatized_24-multiple-protecting_true.yml/witness.yml [2024-06-21 16:04:55,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:04:55,790 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:04:55,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:04:55,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:04:55,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:04:55,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:04:55" (1/2) ... [2024-06-21 16:04:55,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183b5840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:04:55, skipping insertion in model container [2024-06-21 16:04:55,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:04:55" (1/2) ... [2024-06-21 16:04:55,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@691fd7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:04:55, skipping insertion in model container [2024-06-21 16:04:55,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:04:55" (2/2) ... [2024-06-21 16:04:55,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183b5840 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:55, skipping insertion in model container [2024-06-21 16:04:55,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:04:55" (2/2) ... [2024-06-21 16:04:55,800 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:04:55,854 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:04:55,855 INFO L97 edCorrectnessWitness]: Location invariant before [L707-L707] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-06-21 16:04:55,856 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:04:55,856 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-06-21 16:04:55,856 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-06-21 16:04:55,856 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-06-21 16:04:55,856 INFO L106 edCorrectnessWitness]: ghost_update [L706-L706] multithreaded = 1; [2024-06-21 16:04:55,856 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-06-21 16:04:55,856 INFO L106 edCorrectnessWitness]: ghost_update [L695-L695] __global_lock_locked = 1; [2024-06-21 16:04:55,856 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-06-21 16:04:55,856 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-06-21 16:04:55,857 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-06-21 16:04:55,857 INFO L106 edCorrectnessWitness]: ghost_update [L718-L718] mutex2_locked = 0; [2024-06-21 16:04:55,857 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 1; [2024-06-21 16:04:55,857 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-06-21 16:04:55,857 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 1; [2024-06-21 16:04:55,857 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 0; [2024-06-21 16:04:55,857 INFO L106 edCorrectnessWitness]: ghost_update [L714-L714] __global_lock_locked = 0; [2024-06-21 16:04:55,857 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] __global_lock_locked = 0; [2024-06-21 16:04:55,857 INFO L106 edCorrectnessWitness]: ghost_update [L721-L721] __global_lock_locked = 0; [2024-06-21 16:04:55,858 INFO L106 edCorrectnessWitness]: ghost_update [L708-L708] __global_lock_locked = 1; [2024-06-21 16:04:55,858 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-06-21 16:04:55,858 INFO L106 edCorrectnessWitness]: ghost_update [L711-L711] mutex2_locked = 1; [2024-06-21 16:04:55,858 INFO L106 edCorrectnessWitness]: ghost_update [L707-L707] mutex1_locked = 1; [2024-06-21 16:04:55,858 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] __global_lock_locked = 1; [2024-06-21 16:04:55,858 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] __global_lock_locked = 0; [2024-06-21 16:04:55,858 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] mutex2_locked = 0; [2024-06-21 16:04:55,858 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-06-21 16:04:55,858 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-06-21 16:04:55,859 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] mutex2_locked = 1; [2024-06-21 16:04:55,859 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] mutex1_locked = 0; [2024-06-21 16:04:55,887 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:04:56,200 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:04:56,215 INFO L202 MainTranslator]: Completed pre-run 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 [2024-06-21 16:04:56,320 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:04:56,364 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:04:56,366 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56 WrapperNode [2024-06-21 16:04:56,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:04:56,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:04:56,368 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:04:56,368 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:04:56,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,436 INFO L138 Inliner]: procedures = 162, calls = 54, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 128 [2024-06-21 16:04:56,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:04:56,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:04:56,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:04:56,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:04:56,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,479 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-06-21 16:04:56,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:04:56,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:04:56,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:04:56,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:04:56,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (1/1) ... [2024-06-21 16:04:56,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:04:56,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:04:56,543 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) [2024-06-21 16:04:56,547 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 [2024-06-21 16:04:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-21 16:04:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:04:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-21 16:04:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-21 16:04:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:04:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 16:04:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-21 16:04:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-21 16:04:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-21 16:04:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:04:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:04:56,575 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:04:56,694 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:04:56,696 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:04:56,976 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:04:56,977 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:04:57,183 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:04:57,183 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 16:04:57,184 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:04:57 BoogieIcfgContainer [2024-06-21 16:04:57,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:04:57,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:04:57,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:04:57,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:04:57,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:04:55" (1/4) ... [2024-06-21 16:04:57,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4e9665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:04:57, skipping insertion in model container [2024-06-21 16:04:57,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:04:55" (2/4) ... [2024-06-21 16:04:57,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4e9665 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:04:57, skipping insertion in model container [2024-06-21 16:04:57,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:56" (3/4) ... [2024-06-21 16:04:57,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c4e9665 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:04:57, skipping insertion in model container [2024-06-21 16:04:57,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:04:57" (4/4) ... [2024-06-21 16:04:57,195 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2024-06-21 16:04:57,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:04:57,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-21 16:04:57,212 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:04:57,251 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-06-21 16:04:57,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 123 flow [2024-06-21 16:04:57,336 INFO L124 PetriNetUnfolderBase]: 0/57 cut-off events. [2024-06-21 16:04:57,337 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-21 16:04:57,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 57 events. 0/57 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-21 16:04:57,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 58 transitions, 123 flow [2024-06-21 16:04:57,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 30 transitions, 63 flow [2024-06-21 16:04:57,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:04:57,361 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;@6491409c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:04:57,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-06-21 16:04:57,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:04:57,367 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 16:04:57,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:04:57,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:57,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 16:04:57,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-21 16:04:57,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:57,375 INFO L85 PathProgramCache]: Analyzing trace with hash 446008547, now seen corresponding path program 1 times [2024-06-21 16:04:57,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:57,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592231729] [2024-06-21 16:04:57,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:57,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:57,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592231729] [2024-06-21 16:04:57,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592231729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:57,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:57,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:04:57,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484908851] [2024-06-21 16:04:57,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:57,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:04:57,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:57,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:04:57,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:04:57,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-21 16:04:57,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-21 16:04:57,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:57,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-21 16:04:57,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:04:57,813 INFO L124 PetriNetUnfolderBase]: 31/103 cut-off events. [2024-06-21 16:04:57,813 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-21 16:04:57,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 103 events. 31/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 155 event pairs, 16 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 181. Up to 75 conditions per place. [2024-06-21 16:04:57,816 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-06-21 16:04:57,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 109 flow [2024-06-21 16:04:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:04:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:04:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-21 16:04:57,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2024-06-21 16:04:57,832 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 63 flow. Second operand 3 states and 80 transitions. [2024-06-21 16:04:57,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 109 flow [2024-06-21 16:04:57,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:04:57,838 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 70 flow [2024-06-21 16:04:57,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-06-21 16:04:57,859 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-06-21 16:04:57,859 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 70 flow [2024-06-21 16:04:57,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-21 16:04:57,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:57,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:04:57,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:04:57,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-21 16:04:57,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1678425963, now seen corresponding path program 1 times [2024-06-21 16:04:57,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:57,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134260723] [2024-06-21 16:04:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:57,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:57,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134260723] [2024-06-21 16:04:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134260723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:57,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:57,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:04:57,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014564936] [2024-06-21 16:04:57,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:57,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:04:58,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:04:58,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:04:58,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-21 16:04:58,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-06-21 16:04:58,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:58,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-21 16:04:58,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:04:58,082 INFO L124 PetriNetUnfolderBase]: 28/94 cut-off events. [2024-06-21 16:04:58,082 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-06-21 16:04:58,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 94 events. 28/94 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 135 event pairs, 13 based on Foata normal form. 3/92 useless extension candidates. Maximal degree in co-relation 182. Up to 60 conditions per place. [2024-06-21 16:04:58,084 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 20 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-06-21 16:04:58,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 120 flow [2024-06-21 16:04:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:04:58,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:04:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-21 16:04:58,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-06-21 16:04:58,088 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 70 flow. Second operand 4 states and 100 transitions. [2024-06-21 16:04:58,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 120 flow [2024-06-21 16:04:58,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 16:04:58,092 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 76 flow [2024-06-21 16:04:58,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-21 16:04:58,093 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2024-06-21 16:04:58,093 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 76 flow [2024-06-21 16:04:58,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-06-21 16:04:58,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:58,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:04:58,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:04:58,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-21 16:04:58,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash -601716247, now seen corresponding path program 1 times [2024-06-21 16:04:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:58,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572051086] [2024-06-21 16:04:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:58,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:58,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572051086] [2024-06-21 16:04:58,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572051086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:58,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:58,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:04:58,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300388269] [2024-06-21 16:04:58,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:58,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:04:58,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:58,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:04:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:04:58,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-21 16:04:58,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2024-06-21 16:04:58,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:58,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-21 16:04:58,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:04:58,337 INFO L124 PetriNetUnfolderBase]: 23/83 cut-off events. [2024-06-21 16:04:58,337 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-06-21 16:04:58,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 83 events. 23/83 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 8 based on Foata normal form. 5/85 useless extension candidates. Maximal degree in co-relation 167. Up to 35 conditions per place. [2024-06-21 16:04:58,339 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 20 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2024-06-21 16:04:58,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 130 flow [2024-06-21 16:04:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:04:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:04:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-21 16:04:58,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-21 16:04:58,346 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 76 flow. Second operand 5 states and 120 transitions. [2024-06-21 16:04:58,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 130 flow [2024-06-21 16:04:58,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 16:04:58,349 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 82 flow [2024-06-21 16:04:58,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-21 16:04:58,350 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2024-06-21 16:04:58,351 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 82 flow [2024-06-21 16:04:58,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2024-06-21 16:04:58,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:58,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:04:58,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:04:58,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-21 16:04:58,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash -871854363, now seen corresponding path program 1 times [2024-06-21 16:04:58,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:58,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433336593] [2024-06-21 16:04:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:58,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:58,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433336593] [2024-06-21 16:04:58,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433336593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:58,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:04:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413961805] [2024-06-21 16:04:58,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:58,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:04:58,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:58,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:04:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:04:58,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-21 16:04:58,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-06-21 16:04:58,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:58,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-21 16:04:58,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:04:58,609 INFO L124 PetriNetUnfolderBase]: 20/76 cut-off events. [2024-06-21 16:04:58,609 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-06-21 16:04:58,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 76 events. 20/76 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 5 based on Foata normal form. 3/76 useless extension candidates. Maximal degree in co-relation 156. Up to 20 conditions per place. [2024-06-21 16:04:58,611 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 20 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-21 16:04:58,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 140 flow [2024-06-21 16:04:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:04:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:04:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-21 16:04:58,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2024-06-21 16:04:58,613 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 82 flow. Second operand 6 states and 140 transitions. [2024-06-21 16:04:58,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 140 flow [2024-06-21 16:04:58,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 132 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 16:04:58,615 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 88 flow [2024-06-21 16:04:58,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-06-21 16:04:58,617 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2024-06-21 16:04:58,617 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 88 flow [2024-06-21 16:04:58,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-06-21 16:04:58,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:58,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:04:58,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:04:58,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-21 16:04:58,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:58,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1778829667, now seen corresponding path program 1 times [2024-06-21 16:04:58,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:58,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632193098] [2024-06-21 16:04:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:58,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:58,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632193098] [2024-06-21 16:04:58,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632193098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:58,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:58,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:04:58,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906467176] [2024-06-21 16:04:58,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:58,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:04:58,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:58,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:04:58,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:04:58,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-21 16:04:58,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-06-21 16:04:58,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:58,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-21 16:04:58,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:04:58,862 INFO L124 PetriNetUnfolderBase]: 17/69 cut-off events. [2024-06-21 16:04:58,863 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-06-21 16:04:58,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 69 events. 17/69 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 63 event pairs, 2 based on Foata normal form. 4/71 useless extension candidates. Maximal degree in co-relation 134. Up to 18 conditions per place. [2024-06-21 16:04:58,864 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-21 16:04:58,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 134 flow [2024-06-21 16:04:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:04:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:04:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-21 16:04:58,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891625615763547 [2024-06-21 16:04:58,866 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 88 flow. Second operand 7 states and 158 transitions. [2024-06-21 16:04:58,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 134 flow [2024-06-21 16:04:58,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 116 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 16:04:58,867 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-06-21 16:04:58,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-06-21 16:04:58,870 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2024-06-21 16:04:58,870 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-06-21 16:04:58,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-06-21 16:04:58,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-06-21 16:04:58,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-06-21 16:04:58,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:04:58,874 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-21 16:04:58,877 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 16:04:58,877 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 16:04:58,881 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-21 16:04:58,881 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-21 16:04:58,882 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 04:04:58 BasicIcfg [2024-06-21 16:04:58,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 16:04:58,883 INFO L158 Benchmark]: Toolchain (without parser) took 3093.06ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 120.3MB in the beginning and 129.6MB in the end (delta: -9.3MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2024-06-21 16:04:58,887 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory was 86.0MB in the beginning and 85.9MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:04:58,887 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 159.4MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:04:58,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.04ms. Allocated memory is still 159.4MB. Free memory was 120.3MB in the beginning and 90.8MB in the end (delta: 29.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-21 16:04:58,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.81ms. Allocated memory is still 159.4MB. Free memory was 90.2MB in the beginning and 88.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 16:04:58,893 INFO L158 Benchmark]: Boogie Preprocessor took 74.72ms. Allocated memory is still 159.4MB. Free memory was 88.2MB in the beginning and 86.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 16:04:58,893 INFO L158 Benchmark]: RCFGBuilder took 671.01ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 90.9MB in the end (delta: -4.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-21 16:04:58,893 INFO L158 Benchmark]: TraceAbstraction took 1696.33ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 89.9MB in the beginning and 129.6MB in the end (delta: -39.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:04:58,896 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 121.6MB. Free memory was 86.0MB in the beginning and 85.9MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 159.4MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.04ms. Allocated memory is still 159.4MB. Free memory was 120.3MB in the beginning and 90.8MB in the end (delta: 29.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.81ms. Allocated memory is still 159.4MB. Free memory was 90.2MB in the beginning and 88.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.72ms. Allocated memory is still 159.4MB. Free memory was 88.2MB in the beginning and 86.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 671.01ms. Allocated memory is still 159.4MB. Free memory was 86.1MB in the beginning and 90.9MB in the end (delta: -4.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1696.33ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 89.9MB in the beginning and 129.6MB in the end (delta: -39.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 86 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 334 IncrementalHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 3 mSDtfsCounter, 334 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=4, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 504 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 16:04:58,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE