./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.2024-06-19_11-23-25.files/protection/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i ./goblint.2024-06-19_11-23-25.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-eb4cb34-m [2024-06-21 16:04:58,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:04:58,302 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:04:58,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:04:58,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:04:58,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:04:58,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:04:58,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:04:58,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:04:58,337 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:04:58,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:04:58,337 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:04:58,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:04:58,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:04:58,339 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:04:58,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:04:58,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:04:58,340 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:04:58,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:04:58,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:04:58,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:04:58,341 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:04:58,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:04:58,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:04:58,341 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:04:58,342 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:04:58,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:04:58,342 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:04:58,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:04:58,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:04:58,343 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:04:58,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:04:58,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:04:58,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:04:58,344 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:04:58,344 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:04:58,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:04:58,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:04:58,345 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:04:58,345 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:04:58,345 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:04:58,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:04:58,346 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:04:58,346 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:04:58,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:04:58,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:04:58,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:04:58,552 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:04:58,553 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:04:58,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/13-privatized_27-multiple-protecting2_true.yml/witness.yml [2024-06-21 16:04:58,746 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:04:58,746 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:04:58,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-21 16:04:59,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:04:59,903 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:04:59,903 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-21 16:04:59,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b25f0b05/c743bc391ec74363ab0ef160bdbf58f4/FLAGe34b2d106 [2024-06-21 16:04:59,938 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b25f0b05/c743bc391ec74363ab0ef160bdbf58f4 [2024-06-21 16:04:59,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:04:59,941 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:04:59,943 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:04:59,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:04:59,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:04:59,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:04:58" (1/2) ... [2024-06-21 16:04:59,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb27e8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:59, skipping insertion in model container [2024-06-21 16:04:59,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:04:58" (1/2) ... [2024-06-21 16:04:59,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@16f821c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:59, skipping insertion in model container [2024-06-21 16:04:59,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:04:59" (2/2) ... [2024-06-21 16:04:59,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb27e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:04:59, skipping insertion in model container [2024-06-21 16:04:59,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:04:59" (2/2) ... [2024-06-21 16:04:59,953 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:04:59,998 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:04:59,999 INFO L97 edCorrectnessWitness]: Location invariant before [L711-L711] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-06-21 16:05:00,000 INFO L97 edCorrectnessWitness]: Location invariant before [L712-L712] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-06-21 16:05:00,000 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-06-21 16:05:00,000 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-06-21 16:05:00,000 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-06-21 16:05:00,000 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:05:00,000 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] mutex1_locked = 0; [2024-06-21 16:05:00,000 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] multithreaded = 1; [2024-06-21 16:05:00,001 INFO L106 edCorrectnessWitness]: ghost_update [L724-L724] __global_lock_locked = 1; [2024-06-21 16:05:00,001 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-06-21 16:05:00,001 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-06-21 16:05:00,001 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] mutex2_locked = 0; [2024-06-21 16:05:00,001 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 0; [2024-06-21 16:05:00,001 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 1; [2024-06-21 16:05:00,001 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] mutex1_locked = 1; [2024-06-21 16:05:00,001 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] __global_lock_locked = 1; [2024-06-21 16:05:00,002 INFO L106 edCorrectnessWitness]: ghost_update [L726-L726] __global_lock_locked = 0; [2024-06-21 16:05:00,002 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] __global_lock_locked = 0; [2024-06-21 16:05:00,002 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] mutex2_locked = 1; [2024-06-21 16:05:00,002 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-06-21 16:05:00,002 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] __global_lock_locked = 0; [2024-06-21 16:05:00,003 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-06-21 16:05:00,003 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] mutex2_locked = 1; [2024-06-21 16:05:00,003 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] __global_lock_locked = 1; [2024-06-21 16:05:00,003 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-06-21 16:05:00,003 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-06-21 16:05:00,003 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-06-21 16:05:00,004 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 0; [2024-06-21 16:05:00,004 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] __global_lock_locked = 1; [2024-06-21 16:05:00,004 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-06-21 16:05:00,004 INFO L106 edCorrectnessWitness]: ghost_update [L723-L723] mutex2_locked = 0; [2024-06-21 16:05:00,039 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:05:00,313 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:05:00,325 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 [2024-06-21 16:05:00,418 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:05:00,450 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:05:00,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00 WrapperNode [2024-06-21 16:05:00,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:05:00,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:05:00,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:05:00,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:05:00,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,507 INFO L138 Inliner]: procedures = 163, calls = 55, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 137 [2024-06-21 16:05:00,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:05:00,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:05:00,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:05:00,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:05:00,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,546 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-06-21 16:05:00,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:05:00,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:05:00,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:05:00,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:05:00,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (1/1) ... [2024-06-21 16:05:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:05:00,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:05:00,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-21 16:05:00,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-21 16:05:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-21 16:05:00,621 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-21 16:05:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-21 16:05:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:05:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-21 16:05:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-21 16:05:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:05:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 16:05:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-21 16:05:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-21 16:05:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-21 16:05:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:05:00,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:05:00,623 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:05:00,734 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:05:00,736 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:05:01,023 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:05:01,023 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:05:01,166 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:05:01,166 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 16:05:01,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:05:01 BoogieIcfgContainer [2024-06-21 16:05:01,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:05:01,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:05:01,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:05:01,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:05:01,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:04:58" (1/4) ... [2024-06-21 16:05:01,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dca43a1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:05:01, skipping insertion in model container [2024-06-21 16:05:01,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:04:59" (2/4) ... [2024-06-21 16:05:01,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dca43a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:05:01, skipping insertion in model container [2024-06-21 16:05:01,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:05:00" (3/4) ... [2024-06-21 16:05:01,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dca43a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:05:01, skipping insertion in model container [2024-06-21 16:05:01,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:05:01" (4/4) ... [2024-06-21 16:05:01,179 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-06-21 16:05:01,192 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:05:01,192 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 16:05:01,192 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:05:01,228 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-21 16:05:01,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 65 transitions, 144 flow [2024-06-21 16:05:01,288 INFO L124 PetriNetUnfolderBase]: 0/63 cut-off events. [2024-06-21 16:05:01,288 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-21 16:05:01,289 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. [2024-06-21 16:05:01,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 65 transitions, 144 flow [2024-06-21 16:05:01,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 35 transitions, 76 flow [2024-06-21 16:05:01,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:05:01,309 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;@2be4ffc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:05:01,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 16:05:01,316 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:05:01,316 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 16:05:01,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:05:01,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:01,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 16:05:01,318 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)] === [2024-06-21 16:05:01,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash 462481745, now seen corresponding path program 1 times [2024-06-21 16:05:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:01,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080780515] [2024-06-21 16:05:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:01,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:01,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080780515] [2024-06-21 16:05:01,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080780515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:01,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:01,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:05:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601415748] [2024-06-21 16:05:01,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:01,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:05:01,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:01,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:05:01,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:05:01,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:01,699 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) [2024-06-21 16:05:01,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:01,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:01,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:01,828 INFO L124 PetriNetUnfolderBase]: 456/870 cut-off events. [2024-06-21 16:05:01,828 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-06-21 16:05:01,831 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. [2024-06-21 16:05:01,835 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 33 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-06-21 16:05:01,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 171 flow [2024-06-21 16:05:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:05:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:05:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-21 16:05:01,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-21 16:05:01,845 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 76 flow. Second operand 3 states and 98 transitions. [2024-06-21 16:05:01,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 171 flow [2024-06-21 16:05:01,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 16:05:01,849 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 95 flow [2024-06-21 16:05:01,850 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} [2024-06-21 16:05:01,853 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-21 16:05:01,853 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 95 flow [2024-06-21 16:05:01,853 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) [2024-06-21 16:05:01,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:01,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:01,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:05:01,854 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)] === [2024-06-21 16:05:01,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:01,854 INFO L85 PathProgramCache]: Analyzing trace with hash 804509906, now seen corresponding path program 1 times [2024-06-21 16:05:01,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:01,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644895598] [2024-06-21 16:05:01,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:01,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:01,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:01,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644895598] [2024-06-21 16:05:01,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644895598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:01,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:01,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:05:01,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066010703] [2024-06-21 16:05:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:01,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:05:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:05:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:05:01,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:01,950 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) [2024-06-21 16:05:01,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:01,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:01,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:02,069 INFO L124 PetriNetUnfolderBase]: 435/833 cut-off events. [2024-06-21 16:05:02,070 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-06-21 16:05:02,072 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. [2024-06-21 16:05:02,075 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 41 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-21 16:05:02,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 229 flow [2024-06-21 16:05:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:05:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:05:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-21 16:05:02,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-21 16:05:02,080 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 95 flow. Second operand 4 states and 128 transitions. [2024-06-21 16:05:02,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 229 flow [2024-06-21 16:05:02,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:05:02,083 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 119 flow [2024-06-21 16:05:02,084 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} [2024-06-21 16:05:02,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-21 16:05:02,085 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 119 flow [2024-06-21 16:05:02,087 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) [2024-06-21 16:05:02,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:02,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:02,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:05:02,089 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)] === [2024-06-21 16:05:02,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1094201457, now seen corresponding path program 1 times [2024-06-21 16:05:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:02,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409148991] [2024-06-21 16:05:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:02,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:02,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:02,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409148991] [2024-06-21 16:05:02,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409148991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:02,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:02,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:05:02,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777546088] [2024-06-21 16:05:02,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:02,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:05:02,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:02,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:05:02,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:05:02,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:02,189 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) [2024-06-21 16:05:02,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:02,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:02,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:02,317 INFO L124 PetriNetUnfolderBase]: 417/803 cut-off events. [2024-06-21 16:05:02,317 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2024-06-21 16:05:02,318 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. [2024-06-21 16:05:02,321 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 40 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-06-21 16:05:02,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 243 flow [2024-06-21 16:05:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:05:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:05:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-21 16:05:02,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-21 16:05:02,322 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 119 flow. Second operand 4 states and 124 transitions. [2024-06-21 16:05:02,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 243 flow [2024-06-21 16:05:02,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 16:05:02,324 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 135 flow [2024-06-21 16:05:02,325 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} [2024-06-21 16:05:02,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-06-21 16:05:02,325 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 135 flow [2024-06-21 16:05:02,326 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) [2024-06-21 16:05:02,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:02,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:02,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:05:02,326 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)] === [2024-06-21 16:05:02,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash -248363760, now seen corresponding path program 1 times [2024-06-21 16:05:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106107433] [2024-06-21 16:05:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:02,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:02,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106107433] [2024-06-21 16:05:02,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106107433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:02,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:02,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:02,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639611671] [2024-06-21 16:05:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:02,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:02,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:02,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:02,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:02,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:02,397 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) [2024-06-21 16:05:02,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:02,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:02,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:02,496 INFO L124 PetriNetUnfolderBase]: 393/759 cut-off events. [2024-06-21 16:05:02,496 INFO L125 PetriNetUnfolderBase]: For 533/533 co-relation queries the response was YES. [2024-06-21 16:05:02,497 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. [2024-06-21 16:05:02,500 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 45 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-06-21 16:05:02,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 275 flow [2024-06-21 16:05:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:02,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-06-21 16:05:02,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646153846153846 [2024-06-21 16:05:02,501 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 135 flow. Second operand 5 states and 151 transitions. [2024-06-21 16:05:02,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 275 flow [2024-06-21 16:05:02,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 266 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 16:05:02,504 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 136 flow [2024-06-21 16:05:02,504 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} [2024-06-21 16:05:02,504 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-06-21 16:05:02,505 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 136 flow [2024-06-21 16:05:02,505 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) [2024-06-21 16:05:02,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:02,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:02,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:05:02,505 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)] === [2024-06-21 16:05:02,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:02,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1907984909, now seen corresponding path program 1 times [2024-06-21 16:05:02,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:02,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351073532] [2024-06-21 16:05:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:02,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:02,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351073532] [2024-06-21 16:05:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351073532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:02,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:02,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524107733] [2024-06-21 16:05:02,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:02,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:02,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:02,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:02,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:02,579 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) [2024-06-21 16:05:02,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:02,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:02,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:02,664 INFO L124 PetriNetUnfolderBase]: 372/726 cut-off events. [2024-06-21 16:05:02,664 INFO L125 PetriNetUnfolderBase]: For 717/717 co-relation queries the response was YES. [2024-06-21 16:05:02,665 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. [2024-06-21 16:05:02,667 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 42 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2024-06-21 16:05:02,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 268 flow [2024-06-21 16:05:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-21 16:05:02,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523076923076923 [2024-06-21 16:05:02,669 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 136 flow. Second operand 5 states and 147 transitions. [2024-06-21 16:05:02,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 268 flow [2024-06-21 16:05:02,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 254 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:02,671 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 138 flow [2024-06-21 16:05:02,671 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} [2024-06-21 16:05:02,672 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-21 16:05:02,672 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 138 flow [2024-06-21 16:05:02,672 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) [2024-06-21 16:05:02,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:02,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:02,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:05:02,673 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)] === [2024-06-21 16:05:02,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:02,673 INFO L85 PathProgramCache]: Analyzing trace with hash 921700692, now seen corresponding path program 1 times [2024-06-21 16:05:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:02,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774463566] [2024-06-21 16:05:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:02,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:02,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:02,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774463566] [2024-06-21 16:05:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774463566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:02,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:02,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:02,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163415336] [2024-06-21 16:05:02,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:02,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:02,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:02,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:02,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:02,739 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) [2024-06-21 16:05:02,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:02,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:02,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:02,836 INFO L124 PetriNetUnfolderBase]: 399/774 cut-off events. [2024-06-21 16:05:02,836 INFO L125 PetriNetUnfolderBase]: For 967/967 co-relation queries the response was YES. [2024-06-21 16:05:02,837 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. [2024-06-21 16:05:02,839 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 47 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-06-21 16:05:02,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 300 flow [2024-06-21 16:05:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-21 16:05:02,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707692307692308 [2024-06-21 16:05:02,841 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 138 flow. Second operand 5 states and 153 transitions. [2024-06-21 16:05:02,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 300 flow [2024-06-21 16:05:02,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 286 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:02,843 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 155 flow [2024-06-21 16:05:02,843 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} [2024-06-21 16:05:02,844 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-06-21 16:05:02,844 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 155 flow [2024-06-21 16:05:02,844 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) [2024-06-21 16:05:02,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:02,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:02,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 16:05:02,845 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)] === [2024-06-21 16:05:02,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:02,845 INFO L85 PathProgramCache]: Analyzing trace with hash 921688602, now seen corresponding path program 2 times [2024-06-21 16:05:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:02,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519932086] [2024-06-21 16:05:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:02,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:02,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:02,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519932086] [2024-06-21 16:05:02,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519932086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:02,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:02,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:05:02,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574443811] [2024-06-21 16:05:02,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:02,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:02,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:02,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:02,922 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) [2024-06-21 16:05:02,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:02,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:02,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:03,053 INFO L124 PetriNetUnfolderBase]: 381/747 cut-off events. [2024-06-21 16:05:03,053 INFO L125 PetriNetUnfolderBase]: For 1129/1129 co-relation queries the response was YES. [2024-06-21 16:05:03,055 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. [2024-06-21 16:05:03,063 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 46 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-06-21 16:05:03,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 311 flow [2024-06-21 16:05:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:03,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-21 16:05:03,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-21 16:05:03,067 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 155 flow. Second operand 5 states and 150 transitions. [2024-06-21 16:05:03,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 311 flow [2024-06-21 16:05:03,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 296 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:03,071 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 175 flow [2024-06-21 16:05:03,071 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} [2024-06-21 16:05:03,072 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-21 16:05:03,072 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 175 flow [2024-06-21 16:05:03,072 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) [2024-06-21 16:05:03,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:03,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 16:05:03,072 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)] === [2024-06-21 16:05:03,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash -593163178, now seen corresponding path program 1 times [2024-06-21 16:05:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:03,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831324700] [2024-06-21 16:05:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:03,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:03,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:03,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831324700] [2024-06-21 16:05:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831324700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:03,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:03,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:03,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895823786] [2024-06-21 16:05:03,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:03,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:03,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:03,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:03,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:03,192 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) [2024-06-21 16:05:03,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:03,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:03,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:03,304 INFO L124 PetriNetUnfolderBase]: 411/803 cut-off events. [2024-06-21 16:05:03,304 INFO L125 PetriNetUnfolderBase]: For 1633/1633 co-relation queries the response was YES. [2024-06-21 16:05:03,305 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. [2024-06-21 16:05:03,307 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 54 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-06-21 16:05:03,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 379 flow [2024-06-21 16:05:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-21 16:05:03,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-21 16:05:03,309 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 175 flow. Second operand 6 states and 183 transitions. [2024-06-21 16:05:03,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 379 flow [2024-06-21 16:05:03,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 360 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 16:05:03,312 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 201 flow [2024-06-21 16:05:03,312 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} [2024-06-21 16:05:03,313 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-06-21 16:05:03,313 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 201 flow [2024-06-21 16:05:03,313 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) [2024-06-21 16:05:03,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:03,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:03,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 16:05:03,314 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)] === [2024-06-21 16:05:03,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash -593178988, now seen corresponding path program 2 times [2024-06-21 16:05:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039698328] [2024-06-21 16:05:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:03,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:03,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039698328] [2024-06-21 16:05:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039698328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:03,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:03,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562356476] [2024-06-21 16:05:03,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:03,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:03,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:03,390 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) [2024-06-21 16:05:03,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:03,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:03,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:03,503 INFO L124 PetriNetUnfolderBase]: 390/772 cut-off events. [2024-06-21 16:05:03,503 INFO L125 PetriNetUnfolderBase]: For 1724/1724 co-relation queries the response was YES. [2024-06-21 16:05:03,504 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. [2024-06-21 16:05:03,507 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 53 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-06-21 16:05:03,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 393 flow [2024-06-21 16:05:03,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-21 16:05:03,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-21 16:05:03,508 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 201 flow. Second operand 6 states and 183 transitions. [2024-06-21 16:05:03,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 393 flow [2024-06-21 16:05:03,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 374 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 16:05:03,511 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 214 flow [2024-06-21 16:05:03,511 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} [2024-06-21 16:05:03,512 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-21 16:05:03,512 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 214 flow [2024-06-21 16:05:03,512 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) [2024-06-21 16:05:03,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:03,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:03,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 16:05:03,513 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)] === [2024-06-21 16:05:03,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:03,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1007330990, now seen corresponding path program 1 times [2024-06-21 16:05:03,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:03,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326781953] [2024-06-21 16:05:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:03,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:03,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:03,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326781953] [2024-06-21 16:05:03,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326781953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:03,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:03,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:03,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608720373] [2024-06-21 16:05:03,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:03,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:03,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:03,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:03,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:03,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:03,583 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) [2024-06-21 16:05:03,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:03,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:03,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:03,703 INFO L124 PetriNetUnfolderBase]: 420/834 cut-off events. [2024-06-21 16:05:03,704 INFO L125 PetriNetUnfolderBase]: For 1874/1874 co-relation queries the response was YES. [2024-06-21 16:05:03,705 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. [2024-06-21 16:05:03,707 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 56 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2024-06-21 16:05:03,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 408 flow [2024-06-21 16:05:03,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-21 16:05:03,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-21 16:05:03,709 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 214 flow. Second operand 6 states and 180 transitions. [2024-06-21 16:05:03,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 408 flow [2024-06-21 16:05:03,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 386 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 16:05:03,712 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 222 flow [2024-06-21 16:05:03,728 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} [2024-06-21 16:05:03,729 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-21 16:05:03,729 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 222 flow [2024-06-21 16:05:03,729 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) [2024-06-21 16:05:03,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:03,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:03,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 16:05:03,730 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)] === [2024-06-21 16:05:03,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash 369606748, now seen corresponding path program 2 times [2024-06-21 16:05:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520953206] [2024-06-21 16:05:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:03,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:03,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:03,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520953206] [2024-06-21 16:05:03,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520953206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:03,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:03,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:03,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519434041] [2024-06-21 16:05:03,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:03,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:03,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:03,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:03,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:03,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:03,799 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) [2024-06-21 16:05:03,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:03,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:03,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:03,945 INFO L124 PetriNetUnfolderBase]: 450/892 cut-off events. [2024-06-21 16:05:03,945 INFO L125 PetriNetUnfolderBase]: For 2276/2276 co-relation queries the response was YES. [2024-06-21 16:05:03,947 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. [2024-06-21 16:05:03,950 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 56 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-21 16:05:03,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 77 transitions, 432 flow [2024-06-21 16:05:03,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-21 16:05:03,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-21 16:05:03,951 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 222 flow. Second operand 6 states and 183 transitions. [2024-06-21 16:05:03,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 77 transitions, 432 flow [2024-06-21 16:05:03,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 412 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 16:05:03,954 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 249 flow [2024-06-21 16:05:03,954 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} [2024-06-21 16:05:03,968 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-06-21 16:05:03,968 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 249 flow [2024-06-21 16:05:03,968 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) [2024-06-21 16:05:03,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:03,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:03,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 16:05:03,969 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)] === [2024-06-21 16:05:03,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash 369615118, now seen corresponding path program 3 times [2024-06-21 16:05:03,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:03,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742924699] [2024-06-21 16:05:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:03,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:04,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:04,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742924699] [2024-06-21 16:05:04,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742924699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:04,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:04,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:04,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737827366] [2024-06-21 16:05:04,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:04,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:04,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:04,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:04,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:04,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:04,051 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) [2024-06-21 16:05:04,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:04,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:04,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:04,167 INFO L124 PetriNetUnfolderBase]: 429/861 cut-off events. [2024-06-21 16:05:04,167 INFO L125 PetriNetUnfolderBase]: For 2213/2213 co-relation queries the response was YES. [2024-06-21 16:05:04,169 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. [2024-06-21 16:05:04,171 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 54 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-21 16:05:04,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 76 transitions, 445 flow [2024-06-21 16:05:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-06-21 16:05:04,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-21 16:05:04,172 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 249 flow. Second operand 6 states and 183 transitions. [2024-06-21 16:05:04,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 76 transitions, 445 flow [2024-06-21 16:05:04,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 424 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 16:05:04,176 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 263 flow [2024-06-21 16:05:04,176 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} [2024-06-21 16:05:04,177 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-21 16:05:04,178 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 263 flow [2024-06-21 16:05:04,178 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) [2024-06-21 16:05:04,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:04,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:04,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 16:05:04,178 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)] === [2024-06-21 16:05:04,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1316156588, now seen corresponding path program 1 times [2024-06-21 16:05:04,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:04,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328645882] [2024-06-21 16:05:04,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:04,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:04,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328645882] [2024-06-21 16:05:04,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328645882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:04,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:04,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:05:04,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051913800] [2024-06-21 16:05:04,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:04,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:04,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:04,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-06-21 16:05:04,353 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) [2024-06-21 16:05:04,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:04,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-06-21 16:05:04,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:04,446 INFO L124 PetriNetUnfolderBase]: 276/582 cut-off events. [2024-06-21 16:05:04,446 INFO L125 PetriNetUnfolderBase]: For 951/951 co-relation queries the response was YES. [2024-06-21 16:05:04,448 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. [2024-06-21 16:05:04,449 INFO L140 encePairwiseOnDemand]: 54/65 looper letters, 42 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-06-21 16:05:04,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 62 transitions, 417 flow [2024-06-21 16:05:04,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:05:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:05:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-21 16:05:04,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553846153846154 [2024-06-21 16:05:04,451 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 263 flow. Second operand 5 states and 148 transitions. [2024-06-21 16:05:04,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 62 transitions, 417 flow [2024-06-21 16:05:04,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 392 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 16:05:04,454 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 281 flow [2024-06-21 16:05:04,455 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} [2024-06-21 16:05:04,455 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-21 16:05:04,455 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 281 flow [2024-06-21 16:05:04,456 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) [2024-06-21 16:05:04,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:04,456 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] [2024-06-21 16:05:04,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 16:05:04,456 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)] === [2024-06-21 16:05:04,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:04,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1763097616, now seen corresponding path program 1 times [2024-06-21 16:05:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:04,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048724120] [2024-06-21 16:05:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:04,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:04,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048724120] [2024-06-21 16:05:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048724120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:04,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:04,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:04,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544071961] [2024-06-21 16:05:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:04,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:05:04,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:05:04,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:05:04,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 65 [2024-06-21 16:05:04,582 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) [2024-06-21 16:05:04,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:04,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 65 [2024-06-21 16:05:04,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:04,708 INFO L124 PetriNetUnfolderBase]: 388/832 cut-off events. [2024-06-21 16:05:04,709 INFO L125 PetriNetUnfolderBase]: For 1980/1980 co-relation queries the response was YES. [2024-06-21 16:05:04,711 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. [2024-06-21 16:05:04,713 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 56 selfloop transitions, 15 changer transitions 15/94 dead transitions. [2024-06-21 16:05:04,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 640 flow [2024-06-21 16:05:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:04,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:04,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-21 16:05:04,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2024-06-21 16:05:04,715 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 281 flow. Second operand 6 states and 177 transitions. [2024-06-21 16:05:04,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 640 flow [2024-06-21 16:05:04,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 637 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 16:05:04,719 INFO L231 Difference]: Finished difference. Result has 73 places, 50 transitions, 325 flow [2024-06-21 16:05:04,719 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} [2024-06-21 16:05:04,720 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-06-21 16:05:04,720 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 50 transitions, 325 flow [2024-06-21 16:05:04,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:04,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:04,721 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] [2024-06-21 16:05:04,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 16:05:04,721 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)] === [2024-06-21 16:05:04,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash 342780759, now seen corresponding path program 1 times [2024-06-21 16:05:04,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:04,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375068614] [2024-06-21 16:05:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:04,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:04,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:04,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375068614] [2024-06-21 16:05:04,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375068614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:04,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:04,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:05:04,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293897599] [2024-06-21 16:05:04,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:04,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:05:04,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:05:04,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:05:04,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:04,811 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) [2024-06-21 16:05:04,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:04,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:04,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:04,916 INFO L124 PetriNetUnfolderBase]: 315/674 cut-off events. [2024-06-21 16:05:04,916 INFO L125 PetriNetUnfolderBase]: For 2221/2221 co-relation queries the response was YES. [2024-06-21 16:05:04,918 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. [2024-06-21 16:05:04,920 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 55 selfloop transitions, 12 changer transitions 8/84 dead transitions. [2024-06-21 16:05:04,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 596 flow [2024-06-21 16:05:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:05:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:05:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-21 16:05:04,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-21 16:05:04,921 INFO L175 Difference]: Start difference. First operand has 73 places, 50 transitions, 325 flow. Second operand 7 states and 208 transitions. [2024-06-21 16:05:04,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 596 flow [2024-06-21 16:05:04,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 84 transitions, 559 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 16:05:04,925 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 300 flow [2024-06-21 16:05:04,925 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} [2024-06-21 16:05:04,925 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-21 16:05:04,926 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 300 flow [2024-06-21 16:05:04,926 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) [2024-06-21 16:05:04,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:04,926 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] [2024-06-21 16:05:04,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 16:05:04,926 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)] === [2024-06-21 16:05:04,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash 343759532, now seen corresponding path program 2 times [2024-06-21 16:05:04,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:04,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019850687] [2024-06-21 16:05:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:04,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:05,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:05,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019850687] [2024-06-21 16:05:05,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019850687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:05,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:05,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:05:05,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251002265] [2024-06-21 16:05:05,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:05,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:05:05,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:05,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:05:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:05:05,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:05,009 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) [2024-06-21 16:05:05,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:05,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:05,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:05,127 INFO L124 PetriNetUnfolderBase]: 302/649 cut-off events. [2024-06-21 16:05:05,127 INFO L125 PetriNetUnfolderBase]: For 2290/2290 co-relation queries the response was YES. [2024-06-21 16:05:05,129 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. [2024-06-21 16:05:05,131 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 45 selfloop transitions, 10 changer transitions 20/84 dead transitions. [2024-06-21 16:05:05,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 577 flow [2024-06-21 16:05:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:05:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:05:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-21 16:05:05,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-06-21 16:05:05,132 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 300 flow. Second operand 7 states and 205 transitions. [2024-06-21 16:05:05,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 577 flow [2024-06-21 16:05:05,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 84 transitions, 534 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 16:05:05,136 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 255 flow [2024-06-21 16:05:05,136 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} [2024-06-21 16:05:05,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2024-06-21 16:05:05,137 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 255 flow [2024-06-21 16:05:05,137 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) [2024-06-21 16:05:05,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:05,137 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] [2024-06-21 16:05:05,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 16:05:05,138 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)] === [2024-06-21 16:05:05,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1677286060, now seen corresponding path program 3 times [2024-06-21 16:05:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931427091] [2024-06-21 16:05:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:05,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:05,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:05,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931427091] [2024-06-21 16:05:05,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931427091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:05,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:05,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:05:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946778280] [2024-06-21 16:05:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:05,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:05:05,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:05:05,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:05:05,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:05,225 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) [2024-06-21 16:05:05,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:05,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:05,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:05,331 INFO L124 PetriNetUnfolderBase]: 217/482 cut-off events. [2024-06-21 16:05:05,331 INFO L125 PetriNetUnfolderBase]: For 1215/1215 co-relation queries the response was YES. [2024-06-21 16:05:05,332 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. [2024-06-21 16:05:05,333 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 32 selfloop transitions, 7 changer transitions 24/72 dead transitions. [2024-06-21 16:05:05,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 477 flow [2024-06-21 16:05:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:05:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:05:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-21 16:05:05,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351648351648352 [2024-06-21 16:05:05,334 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 255 flow. Second operand 7 states and 198 transitions. [2024-06-21 16:05:05,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 477 flow [2024-06-21 16:05:05,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 427 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 16:05:05,337 INFO L231 Difference]: Finished difference. Result has 65 places, 37 transitions, 179 flow [2024-06-21 16:05:05,337 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} [2024-06-21 16:05:05,337 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-06-21 16:05:05,337 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 37 transitions, 179 flow [2024-06-21 16:05:05,337 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) [2024-06-21 16:05:05,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:05,338 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] [2024-06-21 16:05:05,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 16:05:05,338 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)] === [2024-06-21 16:05:05,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash 161090725, now seen corresponding path program 2 times [2024-06-21 16:05:05,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:05,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186353229] [2024-06-21 16:05:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:05,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:05,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:05,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186353229] [2024-06-21 16:05:05,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186353229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:05,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:05,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:05:05,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291411339] [2024-06-21 16:05:05,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:05,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:05:05,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:05,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:05:05,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:05:05,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:05,418 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) [2024-06-21 16:05:05,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:05,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:05,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:05,486 INFO L124 PetriNetUnfolderBase]: 164/365 cut-off events. [2024-06-21 16:05:05,487 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-06-21 16:05:05,487 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. [2024-06-21 16:05:05,488 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 25 selfloop transitions, 4 changer transitions 20/58 dead transitions. [2024-06-21 16:05:05,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 339 flow [2024-06-21 16:05:05,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:05:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:05:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-21 16:05:05,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-06-21 16:05:05,489 INFO L175 Difference]: Start difference. First operand has 65 places, 37 transitions, 179 flow. Second operand 7 states and 190 transitions. [2024-06-21 16:05:05,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 339 flow [2024-06-21 16:05:05,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 285 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 16:05:05,491 INFO L231 Difference]: Finished difference. Result has 58 places, 34 transitions, 125 flow [2024-06-21 16:05:05,491 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} [2024-06-21 16:05:05,492 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-21 16:05:05,492 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 125 flow [2024-06-21 16:05:05,492 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) [2024-06-21 16:05:05,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:05,492 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] [2024-06-21 16:05:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 16:05:05,493 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)] === [2024-06-21 16:05:05,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1088398305, now seen corresponding path program 3 times [2024-06-21 16:05:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:05,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104110868] [2024-06-21 16:05:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:05,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:05,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:05,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104110868] [2024-06-21 16:05:05,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104110868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:05,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:05,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:05:05,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477317609] [2024-06-21 16:05:05,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:05,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:05:05,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:05:05,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:05:05,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 65 [2024-06-21 16:05:05,575 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) [2024-06-21 16:05:05,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:05,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 65 [2024-06-21 16:05:05,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:05,632 INFO L124 PetriNetUnfolderBase]: 75/184 cut-off events. [2024-06-21 16:05:05,632 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-06-21 16:05:05,633 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. [2024-06-21 16:05:05,633 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-06-21 16:05:05,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 43 transitions, 207 flow [2024-06-21 16:05:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:05:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:05:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-21 16:05:05,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-21 16:05:05,634 INFO L175 Difference]: Start difference. First operand has 58 places, 34 transitions, 125 flow. Second operand 7 states and 175 transitions. [2024-06-21 16:05:05,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 43 transitions, 207 flow [2024-06-21 16:05:05,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 16:05:05,635 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-21 16:05:05,635 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} [2024-06-21 16:05:05,636 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-21 16:05:05,636 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-21 16:05:05,636 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) [2024-06-21 16:05:05,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 16:05:05,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 16:05:05,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 16:05:05,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 16:05:05,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 16:05:05,639 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:05,641 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 16:05:05,641 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 16:05:05,644 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 16:05:05,644 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 16:05:05,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 04:05:05 BasicIcfg [2024-06-21 16:05:05,645 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 16:05:05,646 INFO L158 Benchmark]: Toolchain (without parser) took 5705.03ms. Allocated memory was 239.1MB in the beginning and 438.3MB in the end (delta: 199.2MB). Free memory was 161.4MB in the beginning and 210.1MB in the end (delta: -48.7MB). Peak memory consumption was 152.7MB. Max. memory is 16.1GB. [2024-06-21 16:05:05,646 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 239.1MB. Free memory was 201.9MB in the beginning and 201.6MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:05:05,646 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 239.1MB. Free memory is still 210.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:05:05,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.10ms. Allocated memory is still 239.1MB. Free memory was 161.0MB in the beginning and 130.9MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-21 16:05:05,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.70ms. Allocated memory is still 239.1MB. Free memory was 130.9MB in the beginning and 128.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 16:05:05,647 INFO L158 Benchmark]: Boogie Preprocessor took 52.46ms. Allocated memory is still 239.1MB. Free memory was 128.8MB in the beginning and 126.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 16:05:05,647 INFO L158 Benchmark]: RCFGBuilder took 604.44ms. Allocated memory is still 239.1MB. Free memory was 126.3MB in the beginning and 176.5MB in the end (delta: -50.2MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2024-06-21 16:05:05,648 INFO L158 Benchmark]: TraceAbstraction took 4475.63ms. Allocated memory was 239.1MB in the beginning and 438.3MB in the end (delta: 199.2MB). Free memory was 175.5MB in the beginning and 210.1MB in the end (delta: -34.6MB). Peak memory consumption was 164.6MB. Max. memory is 16.1GB. [2024-06-21 16:05:05,649 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 239.1MB. Free memory was 201.9MB in the beginning and 201.6MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 239.1MB. Free memory is still 210.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 509.10ms. Allocated memory is still 239.1MB. Free memory was 161.0MB in the beginning and 130.9MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.70ms. Allocated memory is still 239.1MB. Free memory was 130.9MB in the beginning and 128.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.46ms. Allocated memory is still 239.1MB. Free memory was 128.8MB in the beginning and 126.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 604.44ms. Allocated memory is still 239.1MB. Free memory was 126.3MB in the beginning and 176.5MB in the end (delta: -50.2MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4475.63ms. Allocated memory was 239.1MB in the beginning and 438.3MB in the end (delta: 199.2MB). Free memory was 175.5MB in the beginning and 210.1MB in the end (delta: -34.6MB). Peak memory consumption was 164.6MB. 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: 4.4s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 572 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 515 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 1.0s 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, 1.4s 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! [2024-06-21 16:05:05,669 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