./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.2024-05-07_14-17-48.files/mutex-meet/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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.2024-05-07_14-17-48.files/mutex-meet/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-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:49:07,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:49:07,884 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:49:07,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:49:07,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:49:07,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:49:07,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:49:07,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:49:07,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:49:07,930 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:49:07,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:49:07,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:49:07,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:49:07,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:49:07,932 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:49:07,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:49:07,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:49:07,933 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:49:07,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:49:07,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:49:07,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:49:07,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:49:07,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:49:07,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:49:07,936 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:49:07,936 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:49:07,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:49:07,937 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:49:07,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:49:07,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:49:07,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:49:07,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:49:07,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:49:07,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:49:07,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:49:07,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:49:07,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:49:07,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:49:07,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:49:07,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:49:07,941 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:49:07,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:49:07,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:49:07,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:49:08,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:49:08,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:49:08,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:49:08,193 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:49:08,193 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:49:08,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/13-privatized_27-multiple-protecting2_true.yml/witness.yml [2024-05-12 10:49:08,345 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:49:08,346 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:49:08,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-05-12 10:49:09,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:49:09,743 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:49:09,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-05-12 10:49:09,766 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a755db8a/a42bdf958d5c46e6882ee88b2997f0d8/FLAG6b8ed36ab [2024-05-12 10:49:09,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a755db8a/a42bdf958d5c46e6882ee88b2997f0d8 [2024-05-12 10:49:09,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:49:09,786 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:49:09,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:49:09,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:49:09,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:49:09,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:49:08" (1/2) ... [2024-05-12 10:49:09,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523b12b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:09, skipping insertion in model container [2024-05-12 10:49:09,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:49:08" (1/2) ... [2024-05-12 10:49:09,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d34994e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:09, skipping insertion in model container [2024-05-12 10:49:09,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:49:09" (2/2) ... [2024-05-12 10:49:09,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523b12b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:09, skipping insertion in model container [2024-05-12 10:49:09,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:49:09" (2/2) ... [2024-05-12 10:49:09,801 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:49:09,870 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:49:09,871 INFO L97 edCorrectnessWitness]: Location invariant before [L712-L712] (((((! multithreaded || (__global_lock_locked || ((1LL - (long long )g1) + (long long )g2 >= 0LL && (long long )g1 + (long long )g2 >= 0LL))) && (! multithreaded || (mutex2_locked || g2 == 0))) && (! multithreaded || ((0 <= g1 && g1 <= 1) && (g1 == 0 || g1 == 1)))) && (! multithreaded || (mutex1_locked || g1 == 0))) && (! multithreaded || (__global_lock_locked || (((((0 <= g1 && 0 <= g2) && g1 <= 1) && g2 <= 1) && (g1 == 0 || g1 == 1)) && (g2 == 0 || g2 == 1))))) && (! multithreaded || ((0 <= g2 && g2 <= 1) && (g2 == 0 || g2 == 1))) [2024-05-12 10:49:09,872 INFO L97 edCorrectnessWitness]: Location invariant before [L711-L711] (((((! multithreaded || (__global_lock_locked || ((1LL - (long long )g1) + (long long )g2 >= 0LL && (long long )g1 + (long long )g2 >= 0LL))) && (! multithreaded || (mutex2_locked || g2 == 0))) && (! multithreaded || ((0 <= g1 && g1 <= 1) && (g1 == 0 || g1 == 1)))) && (! multithreaded || (mutex1_locked || g1 == 0))) && (! multithreaded || (__global_lock_locked || (((((0 <= g1 && 0 <= g2) && g1 <= 1) && g2 <= 1) && (g1 == 0 || g1 == 1)) && (g2 == 0 || g2 == 1))))) && (! multithreaded || ((0 <= g2 && g2 <= 1) && (g2 == 0 || g2 == 1))) [2024-05-12 10:49:09,872 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:49:09,872 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-05-12 10:49:09,872 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-05-12 10:49:09,872 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-05-12 10:49:09,872 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 1; [2024-05-12 10:49:09,873 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] mutex1_locked = 1; [2024-05-12 10:49:09,873 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 0; [2024-05-12 10:49:09,873 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-05-12 10:49:09,873 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] __global_lock_locked = 1; [2024-05-12 10:49:09,873 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-05-12 10:49:09,874 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-05-12 10:49:09,874 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] mutex1_locked = 0; [2024-05-12 10:49:09,874 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] __global_lock_locked = 0; [2024-05-12 10:49:09,874 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-05-12 10:49:09,874 INFO L106 edCorrectnessWitness]: ghost_update [L726-L726] __global_lock_locked = 0; [2024-05-12 10:49:09,874 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-05-12 10:49:09,875 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-05-12 10:49:09,875 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] multithreaded = 1; [2024-05-12 10:49:09,875 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] mutex2_locked = 0; [2024-05-12 10:49:09,876 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] mutex2_locked = 1; [2024-05-12 10:49:09,876 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] mutex2_locked = 1; [2024-05-12 10:49:09,876 INFO L106 edCorrectnessWitness]: ghost_update [L723-L723] mutex2_locked = 0; [2024-05-12 10:49:09,876 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-05-12 10:49:09,876 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] __global_lock_locked = 1; [2024-05-12 10:49:09,876 INFO L106 edCorrectnessWitness]: ghost_update [L724-L724] __global_lock_locked = 1; [2024-05-12 10:49:09,877 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 0; [2024-05-12 10:49:09,877 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] __global_lock_locked = 0; [2024-05-12 10:49:09,877 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] __global_lock_locked = 1; [2024-05-12 10:49:09,877 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-05-12 10:49:09,922 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:49:10,108 WARN L246 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] [2024-05-12 10:49:10,318 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:49:10,333 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:49:10,373 WARN L246 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] 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 [2024-05-12 10:49:10,471 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:49:10,515 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:49:10,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10 WrapperNode [2024-05-12 10:49:10,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:49:10,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:49:10,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:49:10,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:49:10,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,582 INFO L138 Inliner]: procedures = 164, calls = 64, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 141 [2024-05-12 10:49:10,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:49:10,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:49:10,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:49:10,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:49:10,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,618 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 5, 5, 5, 2, 2]. 24 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0, 0]. The 2 writes are split as follows [0, 0, 0, 0, 1, 1]. [2024-05-12 10:49:10,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:49:10,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:49:10,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:49:10,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:49:10,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (1/1) ... [2024-05-12 10:49:10,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:49:10,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:49:10,672 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) [2024-05-12 10:49:10,679 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 [2024-05-12 10:49:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 10:49:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 10:49:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 10:49:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 10:49:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 10:49:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-05-12 10:49:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-05-12 10:49:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-05-12 10:49:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:49:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:49:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:49:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 10:49:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 10:49:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-05-12 10:49:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 10:49:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:49:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:49:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-12 10:49:10,714 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-12 10:49:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:49:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:49:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:49:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:49:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 10:49:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 10:49:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-05-12 10:49:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 10:49:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:49:10,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:49:10,717 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:49:10,879 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:49:10,881 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:49:11,189 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:49:11,189 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:49:11,364 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:49:11,364 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 10:49:11,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:49:11 BoogieIcfgContainer [2024-05-12 10:49:11,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:49:11,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:49:11,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:49:11,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:49:11,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:49:08" (1/4) ... [2024-05-12 10:49:11,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f69671 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:49:11, skipping insertion in model container [2024-05-12 10:49:11,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:49:09" (2/4) ... [2024-05-12 10:49:11,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f69671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:49:11, skipping insertion in model container [2024-05-12 10:49:11,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:10" (3/4) ... [2024-05-12 10:49:11,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f69671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:49:11, skipping insertion in model container [2024-05-12 10:49:11,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:49:11" (4/4) ... [2024-05-12 10:49:11,376 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-05-12 10:49:11,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:49:11,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 10:49:11,393 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:49:11,444 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-12 10:49:11,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 87 transitions, 188 flow [2024-05-12 10:49:11,530 INFO L124 PetriNetUnfolderBase]: 4/85 cut-off events. [2024-05-12 10:49:11,530 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-05-12 10:49:11,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 4/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2024-05-12 10:49:11,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 87 transitions, 188 flow [2024-05-12 10:49:11,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 74 transitions, 154 flow [2024-05-12 10:49:11,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:49:11,551 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;@1ee55203, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:49:11,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-05-12 10:49:11,555 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:49:11,555 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 10:49:11,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:49:11,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:11,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 10:49:11,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:11,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:11,561 INFO L85 PathProgramCache]: Analyzing trace with hash 476969770, now seen corresponding path program 1 times [2024-05-12 10:49:11,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:11,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30984648] [2024-05-12 10:49:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:11,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:11,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:11,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30984648] [2024-05-12 10:49:11,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30984648] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:11,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:11,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:49:11,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103044579] [2024-05-12 10:49:12,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:12,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:49:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:49:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:49:12,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:12,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-05-12 10:49:12,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:12,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:12,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:12,948 INFO L124 PetriNetUnfolderBase]: 3516/6198 cut-off events. [2024-05-12 10:49:12,949 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-05-12 10:49:12,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11771 conditions, 6198 events. 3516/6198 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 41386 event pairs, 1157 based on Foata normal form. 306/6430 useless extension candidates. Maximal degree in co-relation 11757. Up to 5139 conditions per place. [2024-05-12 10:49:12,992 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 69 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-05-12 10:49:12,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 349 flow [2024-05-12 10:49:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:49:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:49:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-05-12 10:49:13,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6513409961685823 [2024-05-12 10:49:13,007 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 154 flow. Second operand 3 states and 170 transitions. [2024-05-12 10:49:13,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 349 flow [2024-05-12 10:49:13,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 98 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:49:13,017 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 167 flow [2024-05-12 10:49:13,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-05-12 10:49:13,022 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-05-12 10:49:13,023 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 167 flow [2024-05-12 10:49:13,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-05-12 10:49:13,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:13,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:13,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:49:13,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:13,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash -617889227, now seen corresponding path program 1 times [2024-05-12 10:49:13,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375187460] [2024-05-12 10:49:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:13,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375187460] [2024-05-12 10:49:13,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375187460] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:13,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:13,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:49:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768112947] [2024-05-12 10:49:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:13,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:49:13,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:13,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:49:13,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:49:13,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:13,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:13,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:13,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:13,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:14,182 INFO L124 PetriNetUnfolderBase]: 4311/7868 cut-off events. [2024-05-12 10:49:14,182 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2024-05-12 10:49:14,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15398 conditions, 7868 events. 4311/7868 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 56830 event pairs, 305 based on Foata normal form. 28/7787 useless extension candidates. Maximal degree in co-relation 15383. Up to 5023 conditions per place. [2024-05-12 10:49:14,322 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 143 selfloop transitions, 14 changer transitions 0/183 dead transitions. [2024-05-12 10:49:14,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 183 transitions, 716 flow [2024-05-12 10:49:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:49:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:49:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 373 transitions. [2024-05-12 10:49:14,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6124794745484401 [2024-05-12 10:49:14,326 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 167 flow. Second operand 7 states and 373 transitions. [2024-05-12 10:49:14,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 183 transitions, 716 flow [2024-05-12 10:49:14,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 183 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:49:14,331 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 253 flow [2024-05-12 10:49:14,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-05-12 10:49:14,331 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-05-12 10:49:14,332 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 253 flow [2024-05-12 10:49:14,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:14,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:14,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:14,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:49:14,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:14,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:14,338 INFO L85 PathProgramCache]: Analyzing trace with hash -285073068, now seen corresponding path program 1 times [2024-05-12 10:49:14,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:14,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376397300] [2024-05-12 10:49:14,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:14,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:14,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:14,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376397300] [2024-05-12 10:49:14,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376397300] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:14,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:14,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:49:14,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493231495] [2024-05-12 10:49:14,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:14,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:49:14,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:49:14,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:49:14,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:14,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:14,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:14,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:14,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:15,356 INFO L124 PetriNetUnfolderBase]: 4509/8394 cut-off events. [2024-05-12 10:49:15,356 INFO L125 PetriNetUnfolderBase]: For 3191/3191 co-relation queries the response was YES. [2024-05-12 10:49:15,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18118 conditions, 8394 events. 4509/8394 cut-off events. For 3191/3191 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 62229 event pairs, 810 based on Foata normal form. 21/8273 useless extension candidates. Maximal degree in co-relation 18096. Up to 5469 conditions per place. [2024-05-12 10:49:15,403 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 124 selfloop transitions, 15 changer transitions 0/165 dead transitions. [2024-05-12 10:49:15,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 165 transitions, 744 flow [2024-05-12 10:49:15,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:49:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:49:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 278 transitions. [2024-05-12 10:49:15,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.639080459770115 [2024-05-12 10:49:15,408 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 253 flow. Second operand 5 states and 278 transitions. [2024-05-12 10:49:15,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 165 transitions, 744 flow [2024-05-12 10:49:15,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 165 transitions, 734 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-05-12 10:49:15,425 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 352 flow [2024-05-12 10:49:15,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-05-12 10:49:15,426 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2024-05-12 10:49:15,427 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 352 flow [2024-05-12 10:49:15,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:49:15,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:15,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:15,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:49:15,428 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:15,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:15,428 INFO L85 PathProgramCache]: Analyzing trace with hash -440125057, now seen corresponding path program 1 times [2024-05-12 10:49:15,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:15,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189890710] [2024-05-12 10:49:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:15,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:15,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:15,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189890710] [2024-05-12 10:49:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189890710] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:15,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:49:15,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596332380] [2024-05-12 10:49:15,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:15,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:49:15,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:49:15,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:49:15,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-05-12 10:49:15,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-05-12 10:49:15,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:15,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-05-12 10:49:15,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:16,733 INFO L124 PetriNetUnfolderBase]: 6233/10981 cut-off events. [2024-05-12 10:49:16,733 INFO L125 PetriNetUnfolderBase]: For 6155/6191 co-relation queries the response was YES. [2024-05-12 10:49:16,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26387 conditions, 10981 events. 6233/10981 cut-off events. For 6155/6191 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 79393 event pairs, 1719 based on Foata normal form. 151/10771 useless extension candidates. Maximal degree in co-relation 26361. Up to 6285 conditions per place. [2024-05-12 10:49:16,795 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 120 selfloop transitions, 24 changer transitions 5/169 dead transitions. [2024-05-12 10:49:16,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 169 transitions, 921 flow [2024-05-12 10:49:16,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:49:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:49:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-05-12 10:49:16,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494252873563218 [2024-05-12 10:49:16,797 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 352 flow. Second operand 5 states and 239 transitions. [2024-05-12 10:49:16,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 169 transitions, 921 flow [2024-05-12 10:49:16,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 917 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 10:49:16,810 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 521 flow [2024-05-12 10:49:16,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=521, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-05-12 10:49:16,811 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2024-05-12 10:49:16,812 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 521 flow [2024-05-12 10:49:16,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-05-12 10:49:16,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:16,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:16,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:49:16,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:16,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1031483287, now seen corresponding path program 1 times [2024-05-12 10:49:16,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:16,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905504779] [2024-05-12 10:49:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:16,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:17,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:17,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905504779] [2024-05-12 10:49:17,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905504779] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:17,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:17,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:17,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112478073] [2024-05-12 10:49:17,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:17,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:17,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:17,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:17,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:17,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:17,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 521 flow. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:17,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:17,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:17,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:18,791 INFO L124 PetriNetUnfolderBase]: 6856/13277 cut-off events. [2024-05-12 10:49:18,791 INFO L125 PetriNetUnfolderBase]: For 11927/12172 co-relation queries the response was YES. [2024-05-12 10:49:18,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34475 conditions, 13277 events. 6856/13277 cut-off events. For 11927/12172 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 107156 event pairs, 2179 based on Foata normal form. 45/13309 useless extension candidates. Maximal degree in co-relation 34443. Up to 7242 conditions per place. [2024-05-12 10:49:18,898 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 187 selfloop transitions, 43 changer transitions 0/259 dead transitions. [2024-05-12 10:49:18,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 259 transitions, 1559 flow [2024-05-12 10:49:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:49:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:49:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 469 transitions. [2024-05-12 10:49:18,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.598978288633461 [2024-05-12 10:49:18,901 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 521 flow. Second operand 9 states and 469 transitions. [2024-05-12 10:49:18,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 259 transitions, 1559 flow [2024-05-12 10:49:18,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 259 transitions, 1555 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 10:49:18,967 INFO L231 Difference]: Finished difference. Result has 115 places, 141 transitions, 925 flow [2024-05-12 10:49:18,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=925, PETRI_PLACES=115, PETRI_TRANSITIONS=141} [2024-05-12 10:49:18,968 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2024-05-12 10:49:18,969 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 141 transitions, 925 flow [2024-05-12 10:49:18,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:18,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:18,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:18,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:49:18,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:18,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1259504381, now seen corresponding path program 2 times [2024-05-12 10:49:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790715785] [2024-05-12 10:49:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:18,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:19,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:19,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790715785] [2024-05-12 10:49:19,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790715785] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:19,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:19,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:19,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295974255] [2024-05-12 10:49:19,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:19,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:19,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:19,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:19,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:19,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:19,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 141 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:19,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:19,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:19,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:21,488 INFO L124 PetriNetUnfolderBase]: 10113/19521 cut-off events. [2024-05-12 10:49:21,489 INFO L125 PetriNetUnfolderBase]: For 34298/34743 co-relation queries the response was YES. [2024-05-12 10:49:21,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57678 conditions, 19521 events. 10113/19521 cut-off events. For 34298/34743 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 167426 event pairs, 3528 based on Foata normal form. 89/19588 useless extension candidates. Maximal degree in co-relation 57636. Up to 10807 conditions per place. [2024-05-12 10:49:21,627 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 231 selfloop transitions, 64 changer transitions 0/324 dead transitions. [2024-05-12 10:49:21,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 324 transitions, 2426 flow [2024-05-12 10:49:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:49:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:49:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 483 transitions. [2024-05-12 10:49:21,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168582375478927 [2024-05-12 10:49:21,629 INFO L175 Difference]: Start difference. First operand has 115 places, 141 transitions, 925 flow. Second operand 9 states and 483 transitions. [2024-05-12 10:49:21,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 324 transitions, 2426 flow [2024-05-12 10:49:21,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 324 transitions, 2322 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-05-12 10:49:21,866 INFO L231 Difference]: Finished difference. Result has 126 places, 190 transitions, 1546 flow [2024-05-12 10:49:21,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1546, PETRI_PLACES=126, PETRI_TRANSITIONS=190} [2024-05-12 10:49:21,870 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 48 predicate places. [2024-05-12 10:49:21,870 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 190 transitions, 1546 flow [2024-05-12 10:49:21,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:21,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:21,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:21,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:49:21,871 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:21,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:21,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2046871575, now seen corresponding path program 3 times [2024-05-12 10:49:21,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:21,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241851913] [2024-05-12 10:49:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:21,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:22,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:22,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241851913] [2024-05-12 10:49:22,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241851913] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:22,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:22,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:22,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928278374] [2024-05-12 10:49:22,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:22,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:22,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:22,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:22,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 190 transitions, 1546 flow. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:22,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:22,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:22,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:24,932 INFO L124 PetriNetUnfolderBase]: 11679/21773 cut-off events. [2024-05-12 10:49:24,933 INFO L125 PetriNetUnfolderBase]: For 60961/61497 co-relation queries the response was YES. [2024-05-12 10:49:25,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70863 conditions, 21773 events. 11679/21773 cut-off events. For 60961/61497 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 184611 event pairs, 2531 based on Foata normal form. 122/21879 useless extension candidates. Maximal degree in co-relation 70813. Up to 10208 conditions per place. [2024-05-12 10:49:25,120 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 282 selfloop transitions, 73 changer transitions 0/384 dead transitions. [2024-05-12 10:49:25,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 384 transitions, 3206 flow [2024-05-12 10:49:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:49:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:49:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 489 transitions. [2024-05-12 10:49:25,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2024-05-12 10:49:25,123 INFO L175 Difference]: Start difference. First operand has 126 places, 190 transitions, 1546 flow. Second operand 9 states and 489 transitions. [2024-05-12 10:49:25,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 384 transitions, 3206 flow [2024-05-12 10:49:25,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 384 transitions, 3150 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-05-12 10:49:25,529 INFO L231 Difference]: Finished difference. Result has 141 places, 218 transitions, 2061 flow [2024-05-12 10:49:25,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2061, PETRI_PLACES=141, PETRI_TRANSITIONS=218} [2024-05-12 10:49:25,531 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 63 predicate places. [2024-05-12 10:49:25,531 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 218 transitions, 2061 flow [2024-05-12 10:49:25,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:25,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:25,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:25,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 10:49:25,532 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:25,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash 534882463, now seen corresponding path program 4 times [2024-05-12 10:49:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:25,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787496402] [2024-05-12 10:49:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:25,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:25,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:25,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787496402] [2024-05-12 10:49:25,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787496402] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:25,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:25,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:25,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770305186] [2024-05-12 10:49:25,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:25,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:25,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:25,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 218 transitions, 2061 flow. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:25,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:25,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:25,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:29,228 INFO L124 PetriNetUnfolderBase]: 13824/26782 cut-off events. [2024-05-12 10:49:29,229 INFO L125 PetriNetUnfolderBase]: For 108024/108627 co-relation queries the response was YES. [2024-05-12 10:49:29,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93174 conditions, 26782 events. 13824/26782 cut-off events. For 108024/108627 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 242467 event pairs, 5368 based on Foata normal form. 132/26882 useless extension candidates. Maximal degree in co-relation 93113. Up to 17981 conditions per place. [2024-05-12 10:49:29,412 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 301 selfloop transitions, 53 changer transitions 0/383 dead transitions. [2024-05-12 10:49:29,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 383 transitions, 3690 flow [2024-05-12 10:49:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:49:29,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:49:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 469 transitions. [2024-05-12 10:49:29,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.598978288633461 [2024-05-12 10:49:29,415 INFO L175 Difference]: Start difference. First operand has 141 places, 218 transitions, 2061 flow. Second operand 9 states and 469 transitions. [2024-05-12 10:49:29,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 383 transitions, 3690 flow [2024-05-12 10:49:29,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 383 transitions, 3569 flow, removed 59 selfloop flow, removed 1 redundant places. [2024-05-12 10:49:29,823 INFO L231 Difference]: Finished difference. Result has 152 places, 249 transitions, 2529 flow [2024-05-12 10:49:29,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2529, PETRI_PLACES=152, PETRI_TRANSITIONS=249} [2024-05-12 10:49:29,824 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 74 predicate places. [2024-05-12 10:49:29,824 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 249 transitions, 2529 flow [2024-05-12 10:49:29,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:29,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:29,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:29,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 10:49:29,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:29,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash 483119709, now seen corresponding path program 5 times [2024-05-12 10:49:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:29,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226881732] [2024-05-12 10:49:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:30,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226881732] [2024-05-12 10:49:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226881732] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:30,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:30,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:30,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901147802] [2024-05-12 10:49:30,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:30,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:30,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:30,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:30,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 249 transitions, 2529 flow. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:30,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:30,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:30,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:34,343 INFO L124 PetriNetUnfolderBase]: 16926/32705 cut-off events. [2024-05-12 10:49:34,344 INFO L125 PetriNetUnfolderBase]: For 166100/166877 co-relation queries the response was YES. [2024-05-12 10:49:34,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119148 conditions, 32705 events. 16926/32705 cut-off events. For 166100/166877 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 304772 event pairs, 6334 based on Foata normal form. 192/32854 useless extension candidates. Maximal degree in co-relation 119080. Up to 21540 conditions per place. [2024-05-12 10:49:34,583 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 348 selfloop transitions, 74 changer transitions 0/451 dead transitions. [2024-05-12 10:49:34,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 451 transitions, 4826 flow [2024-05-12 10:49:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:49:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:49:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 483 transitions. [2024-05-12 10:49:34,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168582375478927 [2024-05-12 10:49:34,586 INFO L175 Difference]: Start difference. First operand has 152 places, 249 transitions, 2529 flow. Second operand 9 states and 483 transitions. [2024-05-12 10:49:34,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 451 transitions, 4826 flow [2024-05-12 10:49:35,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 451 transitions, 4444 flow, removed 175 selfloop flow, removed 3 redundant places. [2024-05-12 10:49:35,559 INFO L231 Difference]: Finished difference. Result has 161 places, 300 transitions, 3219 flow [2024-05-12 10:49:35,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3219, PETRI_PLACES=161, PETRI_TRANSITIONS=300} [2024-05-12 10:49:35,560 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 83 predicate places. [2024-05-12 10:49:35,560 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 300 transitions, 3219 flow [2024-05-12 10:49:35,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:35,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:35,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:35,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 10:49:35,561 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:35,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash 130828765, now seen corresponding path program 6 times [2024-05-12 10:49:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:35,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205416538] [2024-05-12 10:49:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:35,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:35,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205416538] [2024-05-12 10:49:35,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205416538] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:35,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:35,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:35,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407181264] [2024-05-12 10:49:35,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:35,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:49:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:49:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:49:35,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:35,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 300 transitions, 3219 flow. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:35,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:35,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:35,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:40,871 INFO L124 PetriNetUnfolderBase]: 18122/34889 cut-off events. [2024-05-12 10:49:40,871 INFO L125 PetriNetUnfolderBase]: For 210247/211126 co-relation queries the response was YES. [2024-05-12 10:49:41,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131016 conditions, 34889 events. 18122/34889 cut-off events. For 210247/211126 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 327176 event pairs, 6731 based on Foata normal form. 244/35073 useless extension candidates. Maximal degree in co-relation 130941. Up to 21967 conditions per place. [2024-05-12 10:49:41,200 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 354 selfloop transitions, 86 changer transitions 0/469 dead transitions. [2024-05-12 10:49:41,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 469 transitions, 5322 flow [2024-05-12 10:49:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:49:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:49:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 489 transitions. [2024-05-12 10:49:41,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6245210727969349 [2024-05-12 10:49:41,203 INFO L175 Difference]: Start difference. First operand has 161 places, 300 transitions, 3219 flow. Second operand 9 states and 489 transitions. [2024-05-12 10:49:41,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 469 transitions, 5322 flow [2024-05-12 10:49:42,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 469 transitions, 5008 flow, removed 141 selfloop flow, removed 3 redundant places. [2024-05-12 10:49:42,162 INFO L231 Difference]: Finished difference. Result has 170 places, 318 transitions, 3554 flow [2024-05-12 10:49:42,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3554, PETRI_PLACES=170, PETRI_TRANSITIONS=318} [2024-05-12 10:49:42,163 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 92 predicate places. [2024-05-12 10:49:42,163 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 318 transitions, 3554 flow [2024-05-12 10:49:42,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2024-05-12 10:49:42,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:42,164 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] [2024-05-12 10:49:42,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 10:49:42,164 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:42,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 230933320, now seen corresponding path program 1 times [2024-05-12 10:49:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:42,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030064200] [2024-05-12 10:49:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:42,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:42,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030064200] [2024-05-12 10:49:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030064200] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:42,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:42,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757434129] [2024-05-12 10:49:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:42,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:49:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:49:42,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:49:42,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2024-05-12 10:49:42,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 318 transitions, 3554 flow. Second operand has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 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) [2024-05-12 10:49:42,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:42,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2024-05-12 10:49:42,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:44,436 INFO L124 PetriNetUnfolderBase]: 6485/14575 cut-off events. [2024-05-12 10:49:44,437 INFO L125 PetriNetUnfolderBase]: For 126735/127073 co-relation queries the response was YES. [2024-05-12 10:49:44,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52821 conditions, 14575 events. 6485/14575 cut-off events. For 126735/127073 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 131884 event pairs, 2172 based on Foata normal form. 590/15074 useless extension candidates. Maximal degree in co-relation 52739. Up to 7711 conditions per place. [2024-05-12 10:49:44,560 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 198 selfloop transitions, 56 changer transitions 0/284 dead transitions. [2024-05-12 10:49:44,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 284 transitions, 3470 flow [2024-05-12 10:49:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:49:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:49:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-05-12 10:49:44,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5563218390804597 [2024-05-12 10:49:44,565 INFO L175 Difference]: Start difference. First operand has 170 places, 318 transitions, 3554 flow. Second operand 5 states and 242 transitions. [2024-05-12 10:49:44,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 284 transitions, 3470 flow [2024-05-12 10:49:44,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 284 transitions, 3211 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-05-12 10:49:44,780 INFO L231 Difference]: Finished difference. Result has 168 places, 229 transitions, 2476 flow [2024-05-12 10:49:44,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2476, PETRI_PLACES=168, PETRI_TRANSITIONS=229} [2024-05-12 10:49:44,781 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 90 predicate places. [2024-05-12 10:49:44,781 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 229 transitions, 2476 flow [2024-05-12 10:49:44,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 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) [2024-05-12 10:49:44,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:44,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:44,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 10:49:44,782 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:44,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1720527321, now seen corresponding path program 1 times [2024-05-12 10:49:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:44,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831405328] [2024-05-12 10:49:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:44,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:45,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:45,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831405328] [2024-05-12 10:49:45,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831405328] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:45,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:45,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:49:45,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141939627] [2024-05-12 10:49:45,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:45,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:49:45,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:45,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:49:45,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:49:45,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:45,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 229 transitions, 2476 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2024-05-12 10:49:45,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:45,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:45,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:47,658 INFO L124 PetriNetUnfolderBase]: 7304/16447 cut-off events. [2024-05-12 10:49:47,658 INFO L125 PetriNetUnfolderBase]: For 148777/148823 co-relation queries the response was YES. [2024-05-12 10:49:47,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61836 conditions, 16447 events. 7304/16447 cut-off events. For 148777/148823 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 152788 event pairs, 3848 based on Foata normal form. 46/16482 useless extension candidates. Maximal degree in co-relation 61754. Up to 9201 conditions per place. [2024-05-12 10:49:48,062 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 262 selfloop transitions, 42 changer transitions 0/333 dead transitions. [2024-05-12 10:49:48,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 333 transitions, 3881 flow [2024-05-12 10:49:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:49:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:49:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 356 transitions. [2024-05-12 10:49:48,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845648604269293 [2024-05-12 10:49:48,065 INFO L175 Difference]: Start difference. First operand has 168 places, 229 transitions, 2476 flow. Second operand 7 states and 356 transitions. [2024-05-12 10:49:48,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 333 transitions, 3881 flow [2024-05-12 10:49:48,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 333 transitions, 3878 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:49:48,308 INFO L231 Difference]: Finished difference. Result has 176 places, 235 transitions, 2742 flow [2024-05-12 10:49:48,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2742, PETRI_PLACES=176, PETRI_TRANSITIONS=235} [2024-05-12 10:49:48,309 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 98 predicate places. [2024-05-12 10:49:48,309 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 235 transitions, 2742 flow [2024-05-12 10:49:48,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2024-05-12 10:49:48,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:48,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:48,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 10:49:48,310 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:48,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1006305801, now seen corresponding path program 2 times [2024-05-12 10:49:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:48,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418095413] [2024-05-12 10:49:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:48,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418095413] [2024-05-12 10:49:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418095413] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:49:48,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260214679] [2024-05-12 10:49:48,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:48,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:49:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:49:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:49:48,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:48,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 235 transitions, 2742 flow. Second operand has 10 states, 10 states have (on average 31.8) internal successors, (318), 10 states have internal predecessors, (318), 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) [2024-05-12 10:49:48,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:48,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:48,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:51,166 INFO L124 PetriNetUnfolderBase]: 7589/17135 cut-off events. [2024-05-12 10:49:51,166 INFO L125 PetriNetUnfolderBase]: For 154888/154926 co-relation queries the response was YES. [2024-05-12 10:49:51,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66059 conditions, 17135 events. 7589/17135 cut-off events. For 154888/154926 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 160025 event pairs, 3758 based on Foata normal form. 12/17135 useless extension candidates. Maximal degree in co-relation 65973. Up to 11503 conditions per place. [2024-05-12 10:49:51,281 INFO L140 encePairwiseOnDemand]: 64/87 looper letters, 244 selfloop transitions, 103 changer transitions 0/376 dead transitions. [2024-05-12 10:49:51,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 376 transitions, 4459 flow [2024-05-12 10:49:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:49:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:49:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2024-05-12 10:49:51,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298850574712644 [2024-05-12 10:49:51,286 INFO L175 Difference]: Start difference. First operand has 176 places, 235 transitions, 2742 flow. Second operand 10 states and 461 transitions. [2024-05-12 10:49:51,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 376 transitions, 4459 flow [2024-05-12 10:49:51,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 376 transitions, 4347 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-05-12 10:49:51,566 INFO L231 Difference]: Finished difference. Result has 185 places, 291 transitions, 3671 flow [2024-05-12 10:49:51,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3671, PETRI_PLACES=185, PETRI_TRANSITIONS=291} [2024-05-12 10:49:51,567 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 107 predicate places. [2024-05-12 10:49:51,567 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 291 transitions, 3671 flow [2024-05-12 10:49:51,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.8) internal successors, (318), 10 states have internal predecessors, (318), 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) [2024-05-12 10:49:51,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:51,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:51,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 10:49:51,567 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:51,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:51,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1720511511, now seen corresponding path program 3 times [2024-05-12 10:49:51,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:51,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013230321] [2024-05-12 10:49:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:51,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:51,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013230321] [2024-05-12 10:49:51,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013230321] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:51,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:51,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:49:51,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276306729] [2024-05-12 10:49:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:51,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:49:51,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:51,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:49:51,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:49:51,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:51,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 291 transitions, 3671 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2024-05-12 10:49:51,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:51,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:51,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:54,912 INFO L124 PetriNetUnfolderBase]: 8726/19754 cut-off events. [2024-05-12 10:49:54,912 INFO L125 PetriNetUnfolderBase]: For 205131/205193 co-relation queries the response was YES. [2024-05-12 10:49:55,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84028 conditions, 19754 events. 8726/19754 cut-off events. For 205131/205193 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 188793 event pairs, 4133 based on Foata normal form. 46/19774 useless extension candidates. Maximal degree in co-relation 83939. Up to 8674 conditions per place. [2024-05-12 10:49:55,082 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 292 selfloop transitions, 121 changer transitions 0/442 dead transitions. [2024-05-12 10:49:55,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 442 transitions, 6053 flow [2024-05-12 10:49:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:49:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:49:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 393 transitions. [2024-05-12 10:49:55,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645320197044335 [2024-05-12 10:49:55,085 INFO L175 Difference]: Start difference. First operand has 185 places, 291 transitions, 3671 flow. Second operand 7 states and 393 transitions. [2024-05-12 10:49:55,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 442 transitions, 6053 flow [2024-05-12 10:49:55,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 442 transitions, 5876 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-05-12 10:49:55,805 INFO L231 Difference]: Finished difference. Result has 193 places, 309 transitions, 4356 flow [2024-05-12 10:49:55,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4356, PETRI_PLACES=193, PETRI_TRANSITIONS=309} [2024-05-12 10:49:55,806 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 115 predicate places. [2024-05-12 10:49:55,806 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 309 transitions, 4356 flow [2024-05-12 10:49:55,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2024-05-12 10:49:55,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:55,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:55,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 10:49:55,806 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:49:55,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1985111661, now seen corresponding path program 4 times [2024-05-12 10:49:55,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:55,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861782675] [2024-05-12 10:49:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:55,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:56,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:56,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861782675] [2024-05-12 10:49:56,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861782675] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:56,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:56,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 10:49:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298851371] [2024-05-12 10:49:56,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:56,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 10:49:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:56,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 10:49:56,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 10:49:56,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:49:56,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 309 transitions, 4356 flow. Second operand has 10 states, 10 states have (on average 31.8) internal successors, (318), 10 states have internal predecessors, (318), 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) [2024-05-12 10:49:56,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:56,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:49:56,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:59,493 INFO L124 PetriNetUnfolderBase]: 8813/20168 cut-off events. [2024-05-12 10:49:59,494 INFO L125 PetriNetUnfolderBase]: For 226815/226877 co-relation queries the response was YES. [2024-05-12 10:49:59,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88847 conditions, 20168 events. 8813/20168 cut-off events. For 226815/226877 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 195638 event pairs, 5671 based on Foata normal form. 15/20164 useless extension candidates. Maximal degree in co-relation 88753. Up to 14600 conditions per place. [2024-05-12 10:49:59,669 INFO L140 encePairwiseOnDemand]: 69/87 looper letters, 300 selfloop transitions, 62 changer transitions 0/391 dead transitions. [2024-05-12 10:49:59,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 391 transitions, 5518 flow [2024-05-12 10:49:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 10:49:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 10:49:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 428 transitions. [2024-05-12 10:49:59,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49195402298850577 [2024-05-12 10:49:59,671 INFO L175 Difference]: Start difference. First operand has 193 places, 309 transitions, 4356 flow. Second operand 10 states and 428 transitions. [2024-05-12 10:49:59,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 391 transitions, 5518 flow [2024-05-12 10:50:00,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 391 transitions, 5480 flow, removed 19 selfloop flow, removed 0 redundant places. [2024-05-12 10:50:00,081 INFO L231 Difference]: Finished difference. Result has 207 places, 325 transitions, 4632 flow [2024-05-12 10:50:00,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4318, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4632, PETRI_PLACES=207, PETRI_TRANSITIONS=325} [2024-05-12 10:50:00,083 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 129 predicate places. [2024-05-12 10:50:00,083 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 325 transitions, 4632 flow [2024-05-12 10:50:00,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.8) internal successors, (318), 10 states have internal predecessors, (318), 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) [2024-05-12 10:50:00,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:50:00,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:50:00,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 10:50:00,084 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-05-12 10:50:00,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:50:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1793019193, now seen corresponding path program 5 times [2024-05-12 10:50:00,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:50:00,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046260310] [2024-05-12 10:50:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:50:00,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:50:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:50:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:50:00,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:50:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046260310] [2024-05-12 10:50:00,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046260310] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:50:00,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:50:00,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:50:00,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141601750] [2024-05-12 10:50:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:50:00,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:50:00,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:50:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:50:00,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:50:00,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2024-05-12 10:50:00,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 325 transitions, 4632 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2024-05-12 10:50:00,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:50:00,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2024-05-12 10:50:00,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:50:04,432 INFO L124 PetriNetUnfolderBase]: 10182/23203 cut-off events. [2024-05-12 10:50:04,432 INFO L125 PetriNetUnfolderBase]: For 280552/280638 co-relation queries the response was YES. [2024-05-12 10:50:04,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105971 conditions, 23203 events. 10182/23203 cut-off events. For 280552/280638 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 230205 event pairs, 4572 based on Foata normal form. 42/23214 useless extension candidates. Maximal degree in co-relation 105869. Up to 6593 conditions per place.