./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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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.2024-05-21_14-57-05.files/protection/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 15:36:43,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 15:36:43,986 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 15:36:43,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 15:36:43,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 15:36:44,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 15:36:44,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 15:36:44,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 15:36:44,026 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 15:36:44,030 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 15:36:44,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 15:36:44,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 15:36:44,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 15:36:44,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 15:36:44,032 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 15:36:44,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 15:36:44,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 15:36:44,033 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 15:36:44,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 15:36:44,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 15:36:44,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 15:36:44,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 15:36:44,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 15:36:44,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 15:36:44,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 15:36:44,036 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 15:36:44,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 15:36:44,036 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 15:36:44,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 15:36:44,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 15:36:44,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 15:36:44,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 15:36:44,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:36:44,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 15:36:44,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 15:36:44,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 15:36:44,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 15:36:44,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 15:36:44,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 15:36:44,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 15:36:44,050 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 15:36:44,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 15:36:44,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 15:36:44,051 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 15:36:44,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 15:36:44,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 15:36:44,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 15:36:44,335 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 15:36:44,335 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 15:36:44,336 INFO L431 ainManager$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 [2024-06-20 15:36:45,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 15:36:45,733 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 15:36:45,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-20 15:36:45,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d599286/6a8ee8b4556240caaf53c0b55d36328b/FLAG96063e570 [2024-06-20 15:36:45,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52d599286/6a8ee8b4556240caaf53c0b55d36328b [2024-06-20 15:36:45,770 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 15:36:45,770 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 15:36:45,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/13-privatized_27-multiple-protecting2_true.yml/witness.yml [2024-06-20 15:36:45,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 15:36:45,932 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 15:36:45,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 15:36:45,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 15:36:45,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 15:36:45,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:36:45" (1/2) ... [2024-06-20 15:36:45,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b9dcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:36:45, skipping insertion in model container [2024-06-20 15:36:45,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:36:45" (1/2) ... [2024-06-20 15:36:45,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78cdf403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:36:45, skipping insertion in model container [2024-06-20 15:36:45,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:36:45" (2/2) ... [2024-06-20 15:36:45,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b9dcf1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:45, skipping insertion in model container [2024-06-20 15:36:45,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:36:45" (2/2) ... [2024-06-20 15:36:45,945 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 15:36:46,011 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 15:36:46,013 INFO L97 edCorrectnessWitness]: Location invariant before [L712-L712] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-06-20 15:36:46,013 INFO L97 edCorrectnessWitness]: Location invariant before [L711-L711] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-06-20 15:36:46,013 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-06-20 15:36:46,014 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 15:36:46,014 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-06-20 15:36:46,015 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-06-20 15:36:46,015 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-06-20 15:36:46,015 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] mutex2_locked = 0; [2024-06-20 15:36:46,015 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 0; [2024-06-20 15:36:46,015 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] __global_lock_locked = 1; [2024-06-20 15:36:46,016 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-06-20 15:36:46,016 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] __global_lock_locked = 1; [2024-06-20 15:36:46,016 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 1; [2024-06-20 15:36:46,016 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-06-20 15:36:46,016 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] mutex2_locked = 1; [2024-06-20 15:36:46,016 INFO L106 edCorrectnessWitness]: ghost_update [L724-L724] __global_lock_locked = 1; [2024-06-20 15:36:46,017 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] __global_lock_locked = 1; [2024-06-20 15:36:46,017 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-06-20 15:36:46,017 INFO L106 edCorrectnessWitness]: ghost_update [L723-L723] mutex2_locked = 0; [2024-06-20 15:36:46,017 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-06-20 15:36:46,017 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] multithreaded = 1; [2024-06-20 15:36:46,018 INFO L106 edCorrectnessWitness]: ghost_update [L726-L726] __global_lock_locked = 0; [2024-06-20 15:36:46,018 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] mutex1_locked = 1; [2024-06-20 15:36:46,018 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 0; [2024-06-20 15:36:46,018 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-06-20 15:36:46,018 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] __global_lock_locked = 0; [2024-06-20 15:36:46,019 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] __global_lock_locked = 0; [2024-06-20 15:36:46,019 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-06-20 15:36:46,019 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] mutex2_locked = 1; [2024-06-20 15:36:46,019 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] mutex1_locked = 0; [2024-06-20 15:36:46,019 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-06-20 15:36:46,064 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 15:36:46,406 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:36:46,420 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 15:36:46,529 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:36:46,568 INFO L206 MainTranslator]: Completed translation [2024-06-20 15:36:46,569 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46 WrapperNode [2024-06-20 15:36:46,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 15:36:46,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 15:36:46,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 15:36:46,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 15:36:46,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,627 INFO L138 Inliner]: procedures = 163, calls = 55, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 137 [2024-06-20 15:36:46,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 15:36:46,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 15:36:46,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 15:36:46,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 15:36:46,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,681 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-06-20 15:36:46,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,692 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 15:36:46,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 15:36:46,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 15:36:46,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 15:36:46,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (1/1) ... [2024-06-20 15:36:46,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:36:46,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 15:36:46,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-20 15:36:46,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-20 15:36:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-20 15:36:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-20 15:36:46,766 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-20 15:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 15:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-20 15:36:46,767 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-20 15:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 15:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-20 15:36:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-20 15:36:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-20 15:36:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-20 15:36:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 15:36:46,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 15:36:46,769 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 15:36:46,886 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 15:36:46,888 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 15:36:47,156 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 15:36:47,160 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 15:36:47,425 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 15:36:47,425 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 15:36:47,427 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:36:47 BoogieIcfgContainer [2024-06-20 15:36:47,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 15:36:47,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 15:36:47,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 15:36:47,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 15:36:47,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 03:36:45" (1/4) ... [2024-06-20 15:36:47,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4a6a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:36:47, skipping insertion in model container [2024-06-20 15:36:47,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:36:45" (2/4) ... [2024-06-20 15:36:47,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4a6a13 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:36:47, skipping insertion in model container [2024-06-20 15:36:47,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:36:46" (3/4) ... [2024-06-20 15:36:47,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4a6a13 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:36:47, skipping insertion in model container [2024-06-20 15:36:47,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:36:47" (4/4) ... [2024-06-20 15:36:47,443 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-06-20 15:36:47,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 15:36:47,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 15:36:47,459 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 15:36:47,504 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-20 15:36:47,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 65 transitions, 144 flow [2024-06-20 15:36:47,588 INFO L124 PetriNetUnfolderBase]: 0/63 cut-off events. [2024-06-20 15:36:47,589 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-20 15:36:47,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 63 events. 0/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-20 15:36:47,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 65 transitions, 144 flow [2024-06-20 15:36:47,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 35 transitions, 76 flow [2024-06-20 15:36:47,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 15:36:47,616 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;@112ebf95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 15:36:47,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 15:36:47,623 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 15:36:47,623 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-20 15:36:47,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:36:47,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:47,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 15:36:47,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:47,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash 462481745, now seen corresponding path program 1 times [2024-06-20 15:36:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:47,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057393079] [2024-06-20 15:36:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:47,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:47,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057393079] [2024-06-20 15:36:47,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057393079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:47,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:47,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 15:36:47,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439779560] [2024-06-20 15:36:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:47,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 15:36:47,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 15:36:47,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 15:36:47,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:47,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:47,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:47,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:47,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:48,217 INFO L124 PetriNetUnfolderBase]: 456/870 cut-off events. [2024-06-20 15:36:48,218 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-06-20 15:36:48,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1681 conditions, 870 events. 456/870 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4102 event pairs, 239 based on Foata normal form. 9/864 useless extension candidates. Maximal degree in co-relation 1670. Up to 736 conditions per place. [2024-06-20 15:36:48,233 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 33 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-06-20 15:36:48,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 171 flow [2024-06-20 15:36:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:36:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:36:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-20 15:36:48,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-20 15:36:48,248 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 76 flow. Second operand 3 states and 98 transitions. [2024-06-20 15:36:48,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 171 flow [2024-06-20 15:36:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:36:48,257 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 95 flow [2024-06-20 15:36:48,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-06-20 15:36:48,263 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-20 15:36:48,263 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 95 flow [2024-06-20 15:36:48,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:48,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:48,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:48,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 15:36:48,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:48,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:48,266 INFO L85 PathProgramCache]: Analyzing trace with hash 804509906, now seen corresponding path program 1 times [2024-06-20 15:36:48,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:48,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299686348] [2024-06-20 15:36:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:48,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:48,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:48,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299686348] [2024-06-20 15:36:48,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299686348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:48,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:48,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:36:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074144829] [2024-06-20 15:36:48,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:48,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:36:48,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:48,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:36:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:36:48,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:48,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:48,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:48,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:48,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:48,586 INFO L124 PetriNetUnfolderBase]: 435/833 cut-off events. [2024-06-20 15:36:48,586 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-06-20 15:36:48,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 833 events. 435/833 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3921 event pairs, 161 based on Foata normal form. 12/831 useless extension candidates. Maximal degree in co-relation 1755. Up to 646 conditions per place. [2024-06-20 15:36:48,591 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 41 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-20 15:36:48,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 229 flow [2024-06-20 15:36:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:36:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:36:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-20 15:36:48,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-20 15:36:48,597 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 95 flow. Second operand 4 states and 128 transitions. [2024-06-20 15:36:48,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 229 flow [2024-06-20 15:36:48,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 15:36:48,599 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 119 flow [2024-06-20 15:36:48,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-20 15:36:48,600 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-20 15:36:48,601 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 119 flow [2024-06-20 15:36:48,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:48,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:48,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:48,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 15:36:48,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:48,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:48,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1094201457, now seen corresponding path program 1 times [2024-06-20 15:36:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:48,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397380428] [2024-06-20 15:36:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:48,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:48,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:48,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397380428] [2024-06-20 15:36:48,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397380428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:48,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:48,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:36:48,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879412413] [2024-06-20 15:36:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:48,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:36:48,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:48,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:36:48,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:36:48,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:48,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:48,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:48,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:48,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:48,856 INFO L124 PetriNetUnfolderBase]: 417/803 cut-off events. [2024-06-20 15:36:48,856 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2024-06-20 15:36:48,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1840 conditions, 803 events. 417/803 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3718 event pairs, 194 based on Foata normal form. 9/804 useless extension candidates. Maximal degree in co-relation 1826. Up to 637 conditions per place. [2024-06-20 15:36:48,861 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 40 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-06-20 15:36:48,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 243 flow [2024-06-20 15:36:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:36:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:36:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-20 15:36:48,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-20 15:36:48,863 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 119 flow. Second operand 4 states and 124 transitions. [2024-06-20 15:36:48,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 243 flow [2024-06-20 15:36:48,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 15:36:48,866 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 135 flow [2024-06-20 15:36:48,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-20 15:36:48,867 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-06-20 15:36:48,867 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 135 flow [2024-06-20 15:36:48,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:48,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:48,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:48,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 15:36:48,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:48,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash -248363760, now seen corresponding path program 1 times [2024-06-20 15:36:48,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:48,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141204660] [2024-06-20 15:36:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:48,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:48,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141204660] [2024-06-20 15:36:48,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141204660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:48,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:48,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:36:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150075656] [2024-06-20 15:36:48,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:48,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:36:48,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:36:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:36:48,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:48,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:48,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:48,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:48,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:49,104 INFO L124 PetriNetUnfolderBase]: 393/759 cut-off events. [2024-06-20 15:36:49,105 INFO L125 PetriNetUnfolderBase]: For 533/533 co-relation queries the response was YES. [2024-06-20 15:36:49,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 759 events. 393/759 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3457 event pairs, 73 based on Foata normal form. 16/768 useless extension candidates. Maximal degree in co-relation 1808. Up to 503 conditions per place. [2024-06-20 15:36:49,109 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 45 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-06-20 15:36:49,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 275 flow [2024-06-20 15:36:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:36:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:36:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-06-20 15:36:49,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646153846153846 [2024-06-20 15:36:49,111 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 135 flow. Second operand 5 states and 151 transitions. [2024-06-20 15:36:49,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 275 flow [2024-06-20 15:36:49,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 266 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 15:36:49,114 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 136 flow [2024-06-20 15:36:49,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2024-06-20 15:36:49,115 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-06-20 15:36:49,115 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 136 flow [2024-06-20 15:36:49,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:49,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:49,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:49,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 15:36:49,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:49,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:49,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1907984909, now seen corresponding path program 1 times [2024-06-20 15:36:49,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:49,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323400984] [2024-06-20 15:36:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:49,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:49,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:49,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323400984] [2024-06-20 15:36:49,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323400984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:49,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:49,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:36:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19983929] [2024-06-20 15:36:49,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:49,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:36:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:36:49,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:36:49,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:49,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:49,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:49,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:49,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:49,319 INFO L124 PetriNetUnfolderBase]: 372/726 cut-off events. [2024-06-20 15:36:49,319 INFO L125 PetriNetUnfolderBase]: For 717/717 co-relation queries the response was YES. [2024-06-20 15:36:49,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 726 events. 372/726 cut-off events. For 717/717 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3266 event pairs, 169 based on Foata normal form. 12/734 useless extension candidates. Maximal degree in co-relation 1766. Up to 512 conditions per place. [2024-06-20 15:36:49,323 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 42 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2024-06-20 15:36:49,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 268 flow [2024-06-20 15:36:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:36:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:36:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-20 15:36:49,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523076923076923 [2024-06-20 15:36:49,325 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 136 flow. Second operand 5 states and 147 transitions. [2024-06-20 15:36:49,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 268 flow [2024-06-20 15:36:49,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 254 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 15:36:49,328 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 138 flow [2024-06-20 15:36:49,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-06-20 15:36:49,329 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-20 15:36:49,329 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 138 flow [2024-06-20 15:36:49,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:49,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:49,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:49,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 15:36:49,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:49,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash 921700692, now seen corresponding path program 1 times [2024-06-20 15:36:49,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:49,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229466972] [2024-06-20 15:36:49,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:49,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:49,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:49,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229466972] [2024-06-20 15:36:49,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229466972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:49,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:49,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:36:49,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154408086] [2024-06-20 15:36:49,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:49,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:36:49,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:49,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:36:49,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:36:49,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:49,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:49,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:49,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:49,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:49,546 INFO L124 PetriNetUnfolderBase]: 399/774 cut-off events. [2024-06-20 15:36:49,547 INFO L125 PetriNetUnfolderBase]: For 967/967 co-relation queries the response was YES. [2024-06-20 15:36:49,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 774 events. 399/774 cut-off events. For 967/967 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3586 event pairs, 142 based on Foata normal form. 9/779 useless extension candidates. Maximal degree in co-relation 1918. Up to 552 conditions per place. [2024-06-20 15:36:49,551 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 47 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-06-20 15:36:49,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 300 flow [2024-06-20 15:36:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:36:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:36:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-20 15:36:49,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707692307692308 [2024-06-20 15:36:49,553 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 138 flow. Second operand 5 states and 153 transitions. [2024-06-20 15:36:49,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 300 flow [2024-06-20 15:36:49,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 286 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 15:36:49,556 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 155 flow [2024-06-20 15:36:49,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-20 15:36:49,556 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-06-20 15:36:49,557 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 155 flow [2024-06-20 15:36:49,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:49,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:49,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:49,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 15:36:49,558 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:49,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:49,558 INFO L85 PathProgramCache]: Analyzing trace with hash 921688602, now seen corresponding path program 2 times [2024-06-20 15:36:49,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:49,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791828379] [2024-06-20 15:36:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:49,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:49,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791828379] [2024-06-20 15:36:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791828379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:49,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:36:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382036105] [2024-06-20 15:36:49,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:49,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:36:49,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:36:49,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:36:49,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:49,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:49,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:49,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:49,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:49,779 INFO L124 PetriNetUnfolderBase]: 381/747 cut-off events. [2024-06-20 15:36:49,779 INFO L125 PetriNetUnfolderBase]: For 1129/1129 co-relation queries the response was YES. [2024-06-20 15:36:49,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1916 conditions, 747 events. 381/747 cut-off events. For 1129/1129 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3431 event pairs, 154 based on Foata normal form. 9/752 useless extension candidates. Maximal degree in co-relation 1898. Up to 543 conditions per place. [2024-06-20 15:36:49,784 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 46 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-06-20 15:36:49,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 311 flow [2024-06-20 15:36:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:36:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:36:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-20 15:36:49,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-20 15:36:49,786 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 155 flow. Second operand 5 states and 150 transitions. [2024-06-20 15:36:49,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 311 flow [2024-06-20 15:36:49,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 296 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 15:36:49,791 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 175 flow [2024-06-20 15:36:49,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-06-20 15:36:49,792 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-20 15:36:49,792 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 175 flow [2024-06-20 15:36:49,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:49,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:49,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:49,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 15:36:49,793 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:49,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:49,794 INFO L85 PathProgramCache]: Analyzing trace with hash -593163178, now seen corresponding path program 1 times [2024-06-20 15:36:49,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:49,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945949567] [2024-06-20 15:36:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:49,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:49,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945949567] [2024-06-20 15:36:49,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945949567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:49,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:49,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:36:49,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018507500] [2024-06-20 15:36:49,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:49,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:36:49,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:36:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:36:49,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:49,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:49,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:49,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:49,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:50,087 INFO L124 PetriNetUnfolderBase]: 411/803 cut-off events. [2024-06-20 15:36:50,088 INFO L125 PetriNetUnfolderBase]: For 1633/1633 co-relation queries the response was YES. [2024-06-20 15:36:50,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 803 events. 411/803 cut-off events. For 1633/1633 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3777 event pairs, 64 based on Foata normal form. 12/811 useless extension candidates. Maximal degree in co-relation 2099. Up to 371 conditions per place. [2024-06-20 15:36:50,092 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 54 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-06-20 15:36:50,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 379 flow [2024-06-20 15:36:50,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:36:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:36:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-20 15:36:50,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-20 15:36:50,094 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 175 flow. Second operand 6 states and 183 transitions. [2024-06-20 15:36:50,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 379 flow [2024-06-20 15:36:50,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 360 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 15:36:50,098 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 201 flow [2024-06-20 15:36:50,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-20 15:36:50,099 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-06-20 15:36:50,099 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 201 flow [2024-06-20 15:36:50,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:50,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:50,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:50,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 15:36:50,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:50,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash -593178988, now seen corresponding path program 2 times [2024-06-20 15:36:50,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:50,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120424210] [2024-06-20 15:36:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:50,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:50,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:50,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120424210] [2024-06-20 15:36:50,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120424210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:50,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:36:50,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873737778] [2024-06-20 15:36:50,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:50,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:36:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:36:50,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:36:50,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:50,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:50,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:50,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:50,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:50,362 INFO L124 PetriNetUnfolderBase]: 390/772 cut-off events. [2024-06-20 15:36:50,363 INFO L125 PetriNetUnfolderBase]: For 1724/1724 co-relation queries the response was YES. [2024-06-20 15:36:50,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2052 conditions, 772 events. 390/772 cut-off events. For 1724/1724 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3599 event pairs, 109 based on Foata normal form. 12/780 useless extension candidates. Maximal degree in co-relation 2032. Up to 410 conditions per place. [2024-06-20 15:36:50,367 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 53 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-06-20 15:36:50,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 393 flow [2024-06-20 15:36:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:36:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:36:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-20 15:36:50,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-20 15:36:50,369 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 201 flow. Second operand 6 states and 183 transitions. [2024-06-20 15:36:50,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 393 flow [2024-06-20 15:36:50,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 374 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 15:36:50,374 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 214 flow [2024-06-20 15:36:50,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2024-06-20 15:36:50,375 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-20 15:36:50,375 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 214 flow [2024-06-20 15:36:50,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:50,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:50,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:50,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 15:36:50,376 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:50,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:50,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1007330990, now seen corresponding path program 1 times [2024-06-20 15:36:50,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:50,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328273119] [2024-06-20 15:36:50,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:50,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:50,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:50,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328273119] [2024-06-20 15:36:50,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328273119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:50,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:50,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:36:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945611987] [2024-06-20 15:36:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:50,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:36:50,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:50,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:36:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:36:50,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:50,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:50,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:50,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:50,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:50,652 INFO L124 PetriNetUnfolderBase]: 420/834 cut-off events. [2024-06-20 15:36:50,652 INFO L125 PetriNetUnfolderBase]: For 1874/1874 co-relation queries the response was YES. [2024-06-20 15:36:50,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 834 events. 420/834 cut-off events. For 1874/1874 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4052 event pairs, 147 based on Foata normal form. 12/840 useless extension candidates. Maximal degree in co-relation 2202. Up to 548 conditions per place. [2024-06-20 15:36:50,657 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 56 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2024-06-20 15:36:50,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 408 flow [2024-06-20 15:36:50,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:36:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:36:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-20 15:36:50,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-20 15:36:50,659 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 214 flow. Second operand 6 states and 180 transitions. [2024-06-20 15:36:50,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 408 flow [2024-06-20 15:36:50,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 386 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 15:36:50,664 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 222 flow [2024-06-20 15:36:50,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2024-06-20 15:36:50,666 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-20 15:36:50,667 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 222 flow [2024-06-20 15:36:50,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:50,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:50,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:50,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 15:36:50,668 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:50,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:50,669 INFO L85 PathProgramCache]: Analyzing trace with hash 369606748, now seen corresponding path program 2 times [2024-06-20 15:36:50,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:50,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113982395] [2024-06-20 15:36:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:50,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:50,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:50,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113982395] [2024-06-20 15:36:50,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113982395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:50,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:50,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:36:50,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364732629] [2024-06-20 15:36:50,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:50,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:36:50,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:36:50,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:36:50,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:50,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:50,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:50,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:50,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:50,957 INFO L124 PetriNetUnfolderBase]: 450/892 cut-off events. [2024-06-20 15:36:50,957 INFO L125 PetriNetUnfolderBase]: For 2276/2276 co-relation queries the response was YES. [2024-06-20 15:36:50,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 892 events. 450/892 cut-off events. For 2276/2276 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4472 event pairs, 109 based on Foata normal form. 12/900 useless extension candidates. Maximal degree in co-relation 2372. Up to 470 conditions per place. [2024-06-20 15:36:50,962 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 56 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-20 15:36:50,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 77 transitions, 432 flow [2024-06-20 15:36:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:36:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:36:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-20 15:36:50,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-20 15:36:50,964 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 222 flow. Second operand 6 states and 183 transitions. [2024-06-20 15:36:50,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 77 transitions, 432 flow [2024-06-20 15:36:50,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 412 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 15:36:50,969 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 249 flow [2024-06-20 15:36:50,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-06-20 15:36:50,969 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-06-20 15:36:50,969 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 249 flow [2024-06-20 15:36:50,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:50,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:50,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:50,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 15:36:50,970 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:50,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash 369615118, now seen corresponding path program 3 times [2024-06-20 15:36:50,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:50,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274628886] [2024-06-20 15:36:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:50,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:51,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:51,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274628886] [2024-06-20 15:36:51,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274628886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:51,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:51,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:36:51,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894173840] [2024-06-20 15:36:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:51,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:36:51,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:36:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:36:51,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:51,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:51,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:51,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:51,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:51,216 INFO L124 PetriNetUnfolderBase]: 429/861 cut-off events. [2024-06-20 15:36:51,216 INFO L125 PetriNetUnfolderBase]: For 2213/2213 co-relation queries the response was YES. [2024-06-20 15:36:51,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2280 conditions, 861 events. 429/861 cut-off events. For 2213/2213 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4296 event pairs, 134 based on Foata normal form. 12/869 useless extension candidates. Maximal degree in co-relation 2257. Up to 439 conditions per place. [2024-06-20 15:36:51,222 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 54 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-20 15:36:51,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 76 transitions, 445 flow [2024-06-20 15:36:51,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:36:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:36:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-20 15:36:51,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-20 15:36:51,224 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 249 flow. Second operand 6 states and 183 transitions. [2024-06-20 15:36:51,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 76 transitions, 445 flow [2024-06-20 15:36:51,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 424 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 15:36:51,230 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 263 flow [2024-06-20 15:36:51,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2024-06-20 15:36:51,232 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-20 15:36:51,233 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 263 flow [2024-06-20 15:36:51,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:51,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:51,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:51,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 15:36:51,234 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:51,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1316156588, now seen corresponding path program 1 times [2024-06-20 15:36:51,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:51,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129789976] [2024-06-20 15:36:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:51,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:51,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:51,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129789976] [2024-06-20 15:36:51,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129789976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:51,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:51,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:36:51,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173610700] [2024-06-20 15:36:51,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:51,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:36:51,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:51,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:36:51,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:36:51,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-06-20 15:36:51,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:51,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:51,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-06-20 15:36:51,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:51,501 INFO L124 PetriNetUnfolderBase]: 276/582 cut-off events. [2024-06-20 15:36:51,501 INFO L125 PetriNetUnfolderBase]: For 951/951 co-relation queries the response was YES. [2024-06-20 15:36:51,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 582 events. 276/582 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2721 event pairs, 108 based on Foata normal form. 38/598 useless extension candidates. Maximal degree in co-relation 1577. Up to 274 conditions per place. [2024-06-20 15:36:51,505 INFO L140 encePairwiseOnDemand]: 54/65 looper letters, 42 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-06-20 15:36:51,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 62 transitions, 417 flow [2024-06-20 15:36:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:36:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:36:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-20 15:36:51,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553846153846154 [2024-06-20 15:36:51,507 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 263 flow. Second operand 5 states and 148 transitions. [2024-06-20 15:36:51,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 62 transitions, 417 flow [2024-06-20 15:36:51,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 392 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 15:36:51,511 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 281 flow [2024-06-20 15:36:51,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-06-20 15:36:51,512 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-20 15:36:51,512 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 281 flow [2024-06-20 15:36:51,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:51,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:51,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:51,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 15:36:51,513 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:51,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:51,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1763097616, now seen corresponding path program 1 times [2024-06-20 15:36:51,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:51,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936525733] [2024-06-20 15:36:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:51,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:51,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936525733] [2024-06-20 15:36:51,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936525733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:51,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:51,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:36:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329468403] [2024-06-20 15:36:51,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:51,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:36:51,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:51,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:36:51,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:36:51,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-06-20 15:36:51,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:51,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:51,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-06-20 15:36:51,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:51,811 INFO L124 PetriNetUnfolderBase]: 388/832 cut-off events. [2024-06-20 15:36:51,812 INFO L125 PetriNetUnfolderBase]: For 1980/1980 co-relation queries the response was YES. [2024-06-20 15:36:51,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2466 conditions, 832 events. 388/832 cut-off events. For 1980/1980 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4314 event pairs, 73 based on Foata normal form. 14/839 useless extension candidates. Maximal degree in co-relation 2439. Up to 234 conditions per place. [2024-06-20 15:36:51,816 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 56 selfloop transitions, 15 changer transitions 15/94 dead transitions. [2024-06-20 15:36:51,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 640 flow [2024-06-20 15:36:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:36:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:36:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-20 15:36:51,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2024-06-20 15:36:51,818 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 281 flow. Second operand 6 states and 177 transitions. [2024-06-20 15:36:51,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 640 flow [2024-06-20 15:36:51,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 637 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:36:51,824 INFO L231 Difference]: Finished difference. Result has 73 places, 50 transitions, 325 flow [2024-06-20 15:36:51,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=73, PETRI_TRANSITIONS=50} [2024-06-20 15:36:51,824 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-06-20 15:36:51,824 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 50 transitions, 325 flow [2024-06-20 15:36:51,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:51,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:51,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:51,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 15:36:51,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:51,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:51,826 INFO L85 PathProgramCache]: Analyzing trace with hash 342780759, now seen corresponding path program 1 times [2024-06-20 15:36:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:51,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675248170] [2024-06-20 15:36:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:51,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:51,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:51,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675248170] [2024-06-20 15:36:51,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675248170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:51,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:51,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:36:51,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656192010] [2024-06-20 15:36:51,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:51,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:36:51,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:51,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:36:51,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:36:51,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:51,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 50 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:51,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:51,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:51,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:52,072 INFO L124 PetriNetUnfolderBase]: 315/674 cut-off events. [2024-06-20 15:36:52,072 INFO L125 PetriNetUnfolderBase]: For 2221/2221 co-relation queries the response was YES. [2024-06-20 15:36:52,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2136 conditions, 674 events. 315/674 cut-off events. For 2221/2221 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3235 event pairs, 74 based on Foata normal form. 12/683 useless extension candidates. Maximal degree in co-relation 2107. Up to 251 conditions per place. [2024-06-20 15:36:52,077 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 55 selfloop transitions, 12 changer transitions 8/84 dead transitions. [2024-06-20 15:36:52,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 596 flow [2024-06-20 15:36:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:36:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:36:52,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-20 15:36:52,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-20 15:36:52,078 INFO L175 Difference]: Start difference. First operand has 73 places, 50 transitions, 325 flow. Second operand 7 states and 208 transitions. [2024-06-20 15:36:52,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 596 flow [2024-06-20 15:36:52,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 84 transitions, 559 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 15:36:52,084 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 300 flow [2024-06-20 15:36:52,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2024-06-20 15:36:52,085 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-20 15:36:52,085 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 300 flow [2024-06-20 15:36:52,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:52,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:52,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:52,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 15:36:52,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:52,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash 343759532, now seen corresponding path program 2 times [2024-06-20 15:36:52,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:52,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238831843] [2024-06-20 15:36:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:52,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238831843] [2024-06-20 15:36:52,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238831843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:52,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:52,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:36:52,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011858966] [2024-06-20 15:36:52,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:52,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:36:52,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:36:52,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:36:52,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:52,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:52,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:52,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:52,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:52,340 INFO L124 PetriNetUnfolderBase]: 302/649 cut-off events. [2024-06-20 15:36:52,340 INFO L125 PetriNetUnfolderBase]: For 2290/2290 co-relation queries the response was YES. [2024-06-20 15:36:52,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 649 events. 302/649 cut-off events. For 2290/2290 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3043 event pairs, 79 based on Foata normal form. 14/660 useless extension candidates. Maximal degree in co-relation 2011. Up to 173 conditions per place. [2024-06-20 15:36:52,344 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 45 selfloop transitions, 10 changer transitions 20/84 dead transitions. [2024-06-20 15:36:52,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 577 flow [2024-06-20 15:36:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:36:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:36:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-20 15:36:52,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-06-20 15:36:52,346 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 300 flow. Second operand 7 states and 205 transitions. [2024-06-20 15:36:52,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 577 flow [2024-06-20 15:36:52,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 84 transitions, 534 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-20 15:36:52,350 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 255 flow [2024-06-20 15:36:52,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=44} [2024-06-20 15:36:52,351 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2024-06-20 15:36:52,351 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 255 flow [2024-06-20 15:36:52,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:52,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:52,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:52,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 15:36:52,352 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:52,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1677286060, now seen corresponding path program 3 times [2024-06-20 15:36:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:52,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292356739] [2024-06-20 15:36:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:52,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:52,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:52,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292356739] [2024-06-20 15:36:52,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292356739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:52,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:52,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:36:52,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420840929] [2024-06-20 15:36:52,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:52,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:36:52,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:52,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:36:52,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:36:52,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:52,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 44 transitions, 255 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:52,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:52,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:52,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:52,594 INFO L124 PetriNetUnfolderBase]: 217/482 cut-off events. [2024-06-20 15:36:52,595 INFO L125 PetriNetUnfolderBase]: For 1215/1215 co-relation queries the response was YES. [2024-06-20 15:36:52,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 482 events. 217/482 cut-off events. For 1215/1215 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2086 event pairs, 50 based on Foata normal form. 14/493 useless extension candidates. Maximal degree in co-relation 1399. Up to 173 conditions per place. [2024-06-20 15:36:52,597 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 32 selfloop transitions, 7 changer transitions 24/72 dead transitions. [2024-06-20 15:36:52,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 477 flow [2024-06-20 15:36:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:36:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:36:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-20 15:36:52,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351648351648352 [2024-06-20 15:36:52,599 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 255 flow. Second operand 7 states and 198 transitions. [2024-06-20 15:36:52,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 477 flow [2024-06-20 15:36:52,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 427 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-20 15:36:52,602 INFO L231 Difference]: Finished difference. Result has 65 places, 37 transitions, 179 flow [2024-06-20 15:36:52,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=179, PETRI_PLACES=65, PETRI_TRANSITIONS=37} [2024-06-20 15:36:52,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-06-20 15:36:52,604 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 37 transitions, 179 flow [2024-06-20 15:36:52,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:52,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:52,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:52,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 15:36:52,604 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:52,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash 161090725, now seen corresponding path program 2 times [2024-06-20 15:36:52,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838226823] [2024-06-20 15:36:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:52,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:52,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:52,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838226823] [2024-06-20 15:36:52,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838226823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:52,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:52,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:36:52,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231575405] [2024-06-20 15:36:52,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:52,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:36:52,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:52,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:36:52,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:36:52,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:52,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 37 transitions, 179 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:52,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:52,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:52,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:52,817 INFO L124 PetriNetUnfolderBase]: 164/365 cut-off events. [2024-06-20 15:36:52,817 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-06-20 15:36:52,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 365 events. 164/365 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1415 event pairs, 60 based on Foata normal form. 12/371 useless extension candidates. Maximal degree in co-relation 1010. Up to 107 conditions per place. [2024-06-20 15:36:52,819 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 25 selfloop transitions, 4 changer transitions 20/58 dead transitions. [2024-06-20 15:36:52,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 339 flow [2024-06-20 15:36:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:36:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:36:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-20 15:36:52,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-06-20 15:36:52,821 INFO L175 Difference]: Start difference. First operand has 65 places, 37 transitions, 179 flow. Second operand 7 states and 190 transitions. [2024-06-20 15:36:52,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 339 flow [2024-06-20 15:36:52,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 285 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:36:52,823 INFO L231 Difference]: Finished difference. Result has 58 places, 34 transitions, 125 flow [2024-06-20 15:36:52,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=58, PETRI_TRANSITIONS=34} [2024-06-20 15:36:52,823 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-20 15:36:52,824 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 125 flow [2024-06-20 15:36:52,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:52,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:36:52,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:52,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 15:36:52,824 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:36:52,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:36:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1088398305, now seen corresponding path program 3 times [2024-06-20 15:36:52,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:36:52,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592673146] [2024-06-20 15:36:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:36:52,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:36:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:36:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:36:52,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:36:52,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592673146] [2024-06-20 15:36:52,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592673146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:36:52,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:36:52,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:36:52,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690164761] [2024-06-20 15:36:52,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:36:52,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:36:52,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:36:52,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:36:52,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:36:52,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-20 15:36:52,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 34 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:52,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:36:52,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-20 15:36:52,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:36:53,033 INFO L124 PetriNetUnfolderBase]: 75/184 cut-off events. [2024-06-20 15:36:53,033 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-06-20 15:36:53,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 184 events. 75/184 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 525 event pairs, 23 based on Foata normal form. 12/193 useless extension candidates. Maximal degree in co-relation 417. Up to 52 conditions per place. [2024-06-20 15:36:53,034 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-06-20 15:36:53,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 43 transitions, 207 flow [2024-06-20 15:36:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:36:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:36:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-20 15:36:53,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-20 15:36:53,037 INFO L175 Difference]: Start difference. First operand has 58 places, 34 transitions, 125 flow. Second operand 7 states and 175 transitions. [2024-06-20 15:36:53,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 43 transitions, 207 flow [2024-06-20 15:36:53,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-20 15:36:53,038 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-20 15:36:53,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-20 15:36:53,038 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-20 15:36:53,039 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-20 15:36:53,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:36:53,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 15:36:53,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 15:36:53,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 15:36:53,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 15:36:53,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 15:36:53,045 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-20 15:36:53,048 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 15:36:53,048 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 15:36:53,065 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 15:36:53,065 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 15:36:53,067 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 03:36:53 BasicIcfg [2024-06-20 15:36:53,067 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 15:36:53,067 INFO L158 Benchmark]: Toolchain (without parser) took 7134.95ms. Allocated memory was 184.5MB in the beginning and 331.4MB in the end (delta: 146.8MB). Free memory was 121.1MB in the beginning and 296.5MB in the end (delta: -175.5MB). Peak memory consumption was 169.5MB. Max. memory is 16.1GB. [2024-06-20 15:36:53,067 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 149.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:36:53,068 INFO L158 Benchmark]: Witness Parser took 0.86ms. Allocated memory is still 184.5MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:36:53,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 635.74ms. Allocated memory is still 184.5MB. Free memory was 121.1MB in the beginning and 90.9MB in the end (delta: 30.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-20 15:36:53,068 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.45ms. Allocated memory is still 184.5MB. Free memory was 90.9MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 15:36:53,068 INFO L158 Benchmark]: Boogie Preprocessor took 71.82ms. Allocated memory is still 184.5MB. Free memory was 88.9MB in the beginning and 86.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 15:36:53,069 INFO L158 Benchmark]: RCFGBuilder took 726.32ms. Allocated memory was 184.5MB in the beginning and 274.7MB in the end (delta: 90.2MB). Free memory was 86.0MB in the beginning and 227.9MB in the end (delta: -141.8MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. [2024-06-20 15:36:53,069 INFO L158 Benchmark]: TraceAbstraction took 5636.94ms. Allocated memory was 274.7MB in the beginning and 331.4MB in the end (delta: 56.6MB). Free memory was 226.8MB in the beginning and 296.5MB in the end (delta: -69.7MB). Peak memory consumption was 183.0MB. Max. memory is 16.1GB. [2024-06-20 15:36:53,071 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 149.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.86ms. Allocated memory is still 184.5MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 635.74ms. Allocated memory is still 184.5MB. Free memory was 121.1MB in the beginning and 90.9MB in the end (delta: 30.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.45ms. Allocated memory is still 184.5MB. Free memory was 90.9MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.82ms. Allocated memory is still 184.5MB. Free memory was 88.9MB in the beginning and 86.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 726.32ms. Allocated memory was 184.5MB in the beginning and 274.7MB in the end (delta: 90.2MB). Free memory was 86.0MB in the beginning and 227.9MB in the end (delta: -141.8MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5636.94ms. Allocated memory was 274.7MB in the beginning and 331.4MB in the end (delta: 56.6MB). Free memory was 226.8MB in the beginning and 296.5MB in the end (delta: -69.7MB). Peak memory consumption was 183.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 712]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 96 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 572 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 515 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2520 IncrementalHoareTripleChecker+Invalid, 2576 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 17 mSDtfsCounter, 2520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=14, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 393 NumberOfCodeBlocks, 393 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 2619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-20 15:36:53,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE