./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:01:04,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:01:04,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:01:04,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:01:04,612 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:01:04,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:01:04,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:01:04,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:01:04,646 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:01:04,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:01:04,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:01:04,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:01:04,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:01:04,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:01:04,652 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:01:04,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:01:04,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:01:04,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:01:04,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:01:04,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:01:04,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:01:04,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:01:04,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:01:04,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:01:04,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:01:04,655 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:01:04,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:01:04,656 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:01:04,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:01:04,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:01:04,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:01:04,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:01:04,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:01:04,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:01:04,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:01:04,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:01:04,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:01:04,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:01:04,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:01:04,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:01:04,659 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:01:04,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:01:04,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:01:04,660 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:01:04,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:01:04,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:01:04,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:01:04,906 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:01:04,909 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:01:04,911 INFO L431 ainManager$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 [2024-06-27 18:01:05,061 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:01:05,062 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:01:05,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-27 18:01:06,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:01:06,378 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:01:06,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-27 18:01:06,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b747911/70b0b9e340214a42bf096308fdb981bf/FLAG245a69daa [2024-06-27 18:01:06,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b747911/70b0b9e340214a42bf096308fdb981bf [2024-06-27 18:01:06,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:01:06,403 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:01:06,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:01:06,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:01:06,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:01:06,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:01:05" (1/2) ... [2024-06-27 18:01:06,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb97b08 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:06, skipping insertion in model container [2024-06-27 18:01:06,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:01:05" (1/2) ... [2024-06-27 18:01:06,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cee71f4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:06, skipping insertion in model container [2024-06-27 18:01:06,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:01:06" (2/2) ... [2024-06-27 18:01:06,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb97b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06, skipping insertion in model container [2024-06-27 18:01:06,413 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:01:06" (2/2) ... [2024-06-27 18:01:06,414 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:01:06,457 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:01:06,458 INFO L97 edCorrectnessWitness]: Location invariant before [L711-L711] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-06-27 18:01:06,458 INFO L97 edCorrectnessWitness]: Location invariant before [L712-L712] (! multithreaded || 0 <= g2) && (! multithreaded || 0 <= g1) [2024-06-27 18:01:06,458 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-06-27 18:01:06,459 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-06-27 18:01:06,459 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:01:06,459 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-06-27 18:01:06,459 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-06-27 18:01:06,460 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] mutex2_locked = 1; [2024-06-27 18:01:06,460 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] mutex1_locked = 0; [2024-06-27 18:01:06,460 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] __global_lock_locked = 0; [2024-06-27 18:01:06,460 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-06-27 18:01:06,460 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 0; [2024-06-27 18:01:06,460 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-06-27 18:01:06,460 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-06-27 18:01:06,460 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] mutex1_locked = 1; [2024-06-27 18:01:06,461 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] __global_lock_locked = 1; [2024-06-27 18:01:06,461 INFO L106 edCorrectnessWitness]: ghost_update [L723-L723] mutex2_locked = 0; [2024-06-27 18:01:06,461 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 0; [2024-06-27 18:01:06,461 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] __global_lock_locked = 1; [2024-06-27 18:01:06,461 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-06-27 18:01:06,461 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 1; [2024-06-27 18:01:06,462 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-06-27 18:01:06,462 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] mutex2_locked = 0; [2024-06-27 18:01:06,462 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] multithreaded = 1; [2024-06-27 18:01:06,462 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-06-27 18:01:06,462 INFO L106 edCorrectnessWitness]: ghost_update [L724-L724] __global_lock_locked = 1; [2024-06-27 18:01:06,462 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-06-27 18:01:06,462 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] __global_lock_locked = 0; [2024-06-27 18:01:06,462 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] __global_lock_locked = 1; [2024-06-27 18:01:06,462 INFO L106 edCorrectnessWitness]: ghost_update [L726-L726] __global_lock_locked = 0; [2024-06-27 18:01:06,463 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] mutex2_locked = 1; [2024-06-27 18:01:06,500 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:01:06,637 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2024-06-27 18:01:06,756 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:01:06,769 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:01:06,801 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:01:06,836 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:01:06,871 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:01:06,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06 WrapperNode [2024-06-27 18:01:06,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:01:06,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:01:06,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:01:06,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:01:06,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,909 INFO L138 Inliner]: procedures = 163, calls = 54, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2024-06-27 18:01:06,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:01:06,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:01:06,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:01:06,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:01:06,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,937 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]. [2024-06-27 18:01:06,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:01:06,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:01:06,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:01:06,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:01:06,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (1/1) ... [2024-06-27 18:01:06,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:01:06,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:01:06,983 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) [2024-06-27 18:01:06,984 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 [2024-06-27 18:01:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-27 18:01:07,009 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-27 18:01:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 18:01:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:01:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-27 18:01:07,009 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-27 18:01:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:01:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:01:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 18:01:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-27 18:01:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 18:01:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:01:07,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:01:07,011 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:01:07,117 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:01:07,119 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:01:07,324 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:01:07,324 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:01:07,490 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:01:07,491 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:01:07,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:01:07 BoogieIcfgContainer [2024-06-27 18:01:07,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:01:07,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:01:07,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:01:07,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:01:07,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:01:05" (1/4) ... [2024-06-27 18:01:07,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418e61f6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:01:07, skipping insertion in model container [2024-06-27 18:01:07,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:01:06" (2/4) ... [2024-06-27 18:01:07,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418e61f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:01:07, skipping insertion in model container [2024-06-27 18:01:07,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:06" (3/4) ... [2024-06-27 18:01:07,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418e61f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:01:07, skipping insertion in model container [2024-06-27 18:01:07,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:01:07" (4/4) ... [2024-06-27 18:01:07,498 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-06-27 18:01:07,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:01:07,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:01:07,512 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:01:07,543 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 18:01:07,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 85 transitions, 184 flow [2024-06-27 18:01:07,615 INFO L124 PetriNetUnfolderBase]: 4/83 cut-off events. [2024-06-27 18:01:07,615 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 18:01:07,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2024-06-27 18:01:07,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 85 transitions, 184 flow [2024-06-27 18:01:07,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 73 transitions, 152 flow [2024-06-27 18:01:07,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:01:07,641 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;@57e03e6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:01:07,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 18:01:07,646 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:01:07,646 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:01:07,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:01:07,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:07,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:01:07,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:07,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash 415580344, now seen corresponding path program 1 times [2024-06-27 18:01:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234611078] [2024-06-27 18:01:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:07,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:07,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234611078] [2024-06-27 18:01:07,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234611078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:07,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:07,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:01:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655153919] [2024-06-27 18:01:07,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:07,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:01:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:07,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:01:07,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:01:07,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:07,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-06-27 18:01:07,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:07,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:07,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:08,659 INFO L124 PetriNetUnfolderBase]: 3516/6217 cut-off events. [2024-06-27 18:01:08,660 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-06-27 18:01:08,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11788 conditions, 6217 events. 3516/6217 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 41475 event pairs, 1157 based on Foata normal form. 306/6470 useless extension candidates. Maximal degree in co-relation 11777. Up to 5139 conditions per place. [2024-06-27 18:01:08,695 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 67 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-06-27 18:01:08,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 343 flow [2024-06-27 18:01:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:01:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:01:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-06-27 18:01:08,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-06-27 18:01:08,707 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 152 flow. Second operand 3 states and 174 transitions. [2024-06-27 18:01:08,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 343 flow [2024-06-27 18:01:08,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:01:08,715 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 165 flow [2024-06-27 18:01:08,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-06-27 18:01:08,721 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 1 predicate places. [2024-06-27 18:01:08,721 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 165 flow [2024-06-27 18:01:08,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-06-27 18:01:08,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:08,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:08,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:01:08,723 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:08,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:08,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1640300315, now seen corresponding path program 1 times [2024-06-27 18:01:08,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:08,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999343107] [2024-06-27 18:01:08,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:08,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:08,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:08,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999343107] [2024-06-27 18:01:08,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999343107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:08,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:08,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:01:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565868601] [2024-06-27 18:01:08,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:08,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:01:08,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:08,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:01:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:01:08,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:08,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-06-27 18:01:08,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:08,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:08,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:09,339 INFO L124 PetriNetUnfolderBase]: 3495/6197 cut-off events. [2024-06-27 18:01:09,339 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2024-06-27 18:01:09,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12333 conditions, 6197 events. 3495/6197 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 41489 event pairs, 722 based on Foata normal form. 12/6165 useless extension candidates. Maximal degree in co-relation 12321. Up to 4641 conditions per place. [2024-06-27 18:01:09,371 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 92 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2024-06-27 18:01:09,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 124 transitions, 469 flow [2024-06-27 18:01:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:01:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:01:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2024-06-27 18:01:09,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6676470588235294 [2024-06-27 18:01:09,377 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 165 flow. Second operand 4 states and 227 transitions. [2024-06-27 18:01:09,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 124 transitions, 469 flow [2024-06-27 18:01:09,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:01:09,381 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 189 flow [2024-06-27 18:01:09,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-06-27 18:01:09,382 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-06-27 18:01:09,382 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 189 flow [2024-06-27 18:01:09,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-06-27 18:01:09,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:09,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:09,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:01:09,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:09,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:09,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1804400740, now seen corresponding path program 1 times [2024-06-27 18:01:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614725995] [2024-06-27 18:01:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:09,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:09,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:09,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614725995] [2024-06-27 18:01:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614725995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:09,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:09,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:01:09,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28136149] [2024-06-27 18:01:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:01:09,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:01:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:01:09,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:09,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-06-27 18:01:09,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:09,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:09,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:10,047 INFO L124 PetriNetUnfolderBase]: 3477/6170 cut-off events. [2024-06-27 18:01:10,048 INFO L125 PetriNetUnfolderBase]: For 1284/1284 co-relation queries the response was YES. [2024-06-27 18:01:10,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12800 conditions, 6170 events. 3477/6170 cut-off events. For 1284/1284 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 41219 event pairs, 993 based on Foata normal form. 9/6141 useless extension candidates. Maximal degree in co-relation 12786. Up to 4632 conditions per place. [2024-06-27 18:01:10,072 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 91 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-06-27 18:01:10,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 123 transitions, 483 flow [2024-06-27 18:01:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:01:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:01:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-06-27 18:01:10,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6558823529411765 [2024-06-27 18:01:10,074 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 189 flow. Second operand 4 states and 223 transitions. [2024-06-27 18:01:10,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 123 transitions, 483 flow [2024-06-27 18:01:10,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 123 transitions, 474 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:01:10,078 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 205 flow [2024-06-27 18:01:10,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2024-06-27 18:01:10,078 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-06-27 18:01:10,079 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 205 flow [2024-06-27 18:01:10,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-06-27 18:01:10,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:10,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:10,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:01:10,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:10,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash -299191591, now seen corresponding path program 1 times [2024-06-27 18:01:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628992395] [2024-06-27 18:01:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:10,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:10,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:10,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628992395] [2024-06-27 18:01:10,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628992395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:10,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:10,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:01:10,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444628199] [2024-06-27 18:01:10,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:10,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:10,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:10,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2024-06-27 18:01:10,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:10,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:10,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:10,602 INFO L124 PetriNetUnfolderBase]: 3453/6123 cut-off events. [2024-06-27 18:01:10,603 INFO L125 PetriNetUnfolderBase]: For 1723/1723 co-relation queries the response was YES. [2024-06-27 18:01:10,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13069 conditions, 6123 events. 3453/6123 cut-off events. For 1723/1723 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 40893 event pairs, 277 based on Foata normal form. 16/6102 useless extension candidates. Maximal degree in co-relation 13054. Up to 3954 conditions per place. [2024-06-27 18:01:10,628 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 113 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2024-06-27 18:01:10,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 146 transitions, 583 flow [2024-06-27 18:01:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:01:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:01:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 279 transitions. [2024-06-27 18:01:10,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6564705882352941 [2024-06-27 18:01:10,630 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 205 flow. Second operand 5 states and 279 transitions. [2024-06-27 18:01:10,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 146 transitions, 583 flow [2024-06-27 18:01:10,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 146 transitions, 574 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:01:10,633 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 206 flow [2024-06-27 18:01:10,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2024-06-27 18:01:10,634 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2024-06-27 18:01:10,634 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 206 flow [2024-06-27 18:01:10,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2024-06-27 18:01:10,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:10,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:10,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:01:10,635 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:10,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash -842140066, now seen corresponding path program 1 times [2024-06-27 18:01:10,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:10,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190465754] [2024-06-27 18:01:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:10,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:10,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:10,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190465754] [2024-06-27 18:01:10,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190465754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:10,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:10,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:01:10,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048454935] [2024-06-27 18:01:10,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:10,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:01:10,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:10,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:01:10,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:01:10,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 85 [2024-06-27 18:01:10,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-06-27 18:01:10,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:10,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 85 [2024-06-27 18:01:10,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:11,339 INFO L124 PetriNetUnfolderBase]: 4771/8398 cut-off events. [2024-06-27 18:01:11,339 INFO L125 PetriNetUnfolderBase]: For 2697/2701 co-relation queries the response was YES. [2024-06-27 18:01:11,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18046 conditions, 8398 events. 4771/8398 cut-off events. For 2697/2701 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 57162 event pairs, 2002 based on Foata normal form. 100/8230 useless extension candidates. Maximal degree in co-relation 18030. Up to 4646 conditions per place. [2024-06-27 18:01:11,376 INFO L140 encePairwiseOnDemand]: 71/85 looper letters, 99 selfloop transitions, 19 changer transitions 1/140 dead transitions. [2024-06-27 18:01:11,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 140 transitions, 616 flow [2024-06-27 18:01:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:01:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:01:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2024-06-27 18:01:11,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811764705882353 [2024-06-27 18:01:11,378 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 206 flow. Second operand 5 states and 247 transitions. [2024-06-27 18:01:11,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 140 transitions, 616 flow [2024-06-27 18:01:11,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 140 transitions, 590 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:01:11,386 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 322 flow [2024-06-27 18:01:11,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2024-06-27 18:01:11,387 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-06-27 18:01:11,387 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 322 flow [2024-06-27 18:01:11,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-06-27 18:01:11,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:11,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:11,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:01:11,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:11,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1934718562, now seen corresponding path program 1 times [2024-06-27 18:01:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:11,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203978539] [2024-06-27 18:01:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:11,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:11,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203978539] [2024-06-27 18:01:11,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203978539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:11,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:11,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:01:11,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048908416] [2024-06-27 18:01:11,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:11,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:11,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:11,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:11,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:11,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:11,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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) [2024-06-27 18:01:11,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:11,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:11,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:12,027 INFO L124 PetriNetUnfolderBase]: 3715/6905 cut-off events. [2024-06-27 18:01:12,027 INFO L125 PetriNetUnfolderBase]: For 4298/4446 co-relation queries the response was YES. [2024-06-27 18:01:12,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16334 conditions, 6905 events. 3715/6905 cut-off events. For 4298/4446 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 48652 event pairs, 1157 based on Foata normal form. 23/6914 useless extension candidates. Maximal degree in co-relation 16314. Up to 4482 conditions per place. [2024-06-27 18:01:12,058 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 107 selfloop transitions, 9 changer transitions 0/146 dead transitions. [2024-06-27 18:01:12,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 146 transitions, 716 flow [2024-06-27 18:01:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:01:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:01:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 272 transitions. [2024-06-27 18:01:12,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-27 18:01:12,060 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 322 flow. Second operand 5 states and 272 transitions. [2024-06-27 18:01:12,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 146 transitions, 716 flow [2024-06-27 18:01:12,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 146 transitions, 712 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 18:01:12,073 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 341 flow [2024-06-27 18:01:12,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-06-27 18:01:12,074 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 18 predicate places. [2024-06-27 18:01:12,074 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 341 flow [2024-06-27 18:01:12,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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) [2024-06-27 18:01:12,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:12,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:12,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:01:12,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:12,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash 837946231, now seen corresponding path program 1 times [2024-06-27 18:01:12,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:12,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176447637] [2024-06-27 18:01:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:12,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:12,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176447637] [2024-06-27 18:01:12,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176447637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:12,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:12,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:01:12,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368380473] [2024-06-27 18:01:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:12,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:12,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:12,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:12,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:12,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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) [2024-06-27 18:01:12,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:12,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:12,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:12,730 INFO L124 PetriNetUnfolderBase]: 4045/7208 cut-off events. [2024-06-27 18:01:12,730 INFO L125 PetriNetUnfolderBase]: For 5662/5826 co-relation queries the response was YES. [2024-06-27 18:01:12,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17389 conditions, 7208 events. 4045/7208 cut-off events. For 5662/5826 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 49913 event pairs, 910 based on Foata normal form. 18/7213 useless extension candidates. Maximal degree in co-relation 17366. Up to 4965 conditions per place. [2024-06-27 18:01:12,762 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 121 selfloop transitions, 8 changer transitions 0/159 dead transitions. [2024-06-27 18:01:12,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 159 transitions, 809 flow [2024-06-27 18:01:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:01:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:01:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 280 transitions. [2024-06-27 18:01:12,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2024-06-27 18:01:12,763 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 341 flow. Second operand 5 states and 280 transitions. [2024-06-27 18:01:12,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 159 transitions, 809 flow [2024-06-27 18:01:12,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 159 transitions, 786 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:01:12,772 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 351 flow [2024-06-27 18:01:12,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2024-06-27 18:01:12,773 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2024-06-27 18:01:12,773 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 351 flow [2024-06-27 18:01:12,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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) [2024-06-27 18:01:12,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:12,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:12,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:01:12,774 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:12,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:12,775 INFO L85 PathProgramCache]: Analyzing trace with hash 837934141, now seen corresponding path program 2 times [2024-06-27 18:01:12,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:12,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352348120] [2024-06-27 18:01:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:12,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:12,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:12,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352348120] [2024-06-27 18:01:12,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352348120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:12,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:12,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:01:12,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126291945] [2024-06-27 18:01:12,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:12,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:12,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:12,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:12,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:12,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:12,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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) [2024-06-27 18:01:12,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:12,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:12,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:13,401 INFO L124 PetriNetUnfolderBase]: 4027/7498 cut-off events. [2024-06-27 18:01:13,401 INFO L125 PetriNetUnfolderBase]: For 5860/6024 co-relation queries the response was YES. [2024-06-27 18:01:13,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18348 conditions, 7498 events. 4027/7498 cut-off events. For 5860/6024 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 53999 event pairs, 1253 based on Foata normal form. 18/7499 useless extension candidates. Maximal degree in co-relation 18324. Up to 5028 conditions per place. [2024-06-27 18:01:13,433 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 118 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2024-06-27 18:01:13,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 157 transitions, 811 flow [2024-06-27 18:01:13,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:01:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:01:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 276 transitions. [2024-06-27 18:01:13,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6494117647058824 [2024-06-27 18:01:13,435 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 351 flow. Second operand 5 states and 276 transitions. [2024-06-27 18:01:13,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 157 transitions, 811 flow [2024-06-27 18:01:13,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 157 transitions, 794 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:01:13,447 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 374 flow [2024-06-27 18:01:13,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2024-06-27 18:01:13,448 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2024-06-27 18:01:13,448 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 374 flow [2024-06-27 18:01:13,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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) [2024-06-27 18:01:13,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:13,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:13,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:01:13,449 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:13,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:13,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1009024219, now seen corresponding path program 1 times [2024-06-27 18:01:13,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:13,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851785532] [2024-06-27 18:01:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:13,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:13,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851785532] [2024-06-27 18:01:13,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851785532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:13,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:13,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:01:13,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212420335] [2024-06-27 18:01:13,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:13,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:01:13,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:01:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:01:13,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 85 [2024-06-27 18:01:13,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2024-06-27 18:01:13,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:13,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 85 [2024-06-27 18:01:13,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:13,847 INFO L124 PetriNetUnfolderBase]: 1821/4049 cut-off events. [2024-06-27 18:01:13,847 INFO L125 PetriNetUnfolderBase]: For 2511/2563 co-relation queries the response was YES. [2024-06-27 18:01:13,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9384 conditions, 4049 events. 1821/4049 cut-off events. For 2511/2563 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 28116 event pairs, 515 based on Foata normal form. 219/4253 useless extension candidates. Maximal degree in co-relation 9358. Up to 2374 conditions per place. [2024-06-27 18:01:13,864 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 95 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-06-27 18:01:13,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 132 transitions, 715 flow [2024-06-27 18:01:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:01:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:01:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-06-27 18:01:13,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788235294117647 [2024-06-27 18:01:13,865 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 374 flow. Second operand 5 states and 246 transitions. [2024-06-27 18:01:13,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 132 transitions, 715 flow [2024-06-27 18:01:13,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 132 transitions, 692 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:01:13,873 INFO L231 Difference]: Finished difference. Result has 101 places, 91 transitions, 363 flow [2024-06-27 18:01:13,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=101, PETRI_TRANSITIONS=91} [2024-06-27 18:01:13,873 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2024-06-27 18:01:13,873 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 91 transitions, 363 flow [2024-06-27 18:01:13,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2024-06-27 18:01:13,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:13,874 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] [2024-06-27 18:01:13,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:01:13,874 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:13,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash -5868363, now seen corresponding path program 1 times [2024-06-27 18:01:13,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:13,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460753552] [2024-06-27 18:01:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:13,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:13,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460753552] [2024-06-27 18:01:13,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460753552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:13,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:13,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:13,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519489564] [2024-06-27 18:01:13,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:13,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:01:13,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:13,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:01:13,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:01:13,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:13,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 91 transitions, 363 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:13,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:13,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:13,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:14,376 INFO L124 PetriNetUnfolderBase]: 2102/4480 cut-off events. [2024-06-27 18:01:14,376 INFO L125 PetriNetUnfolderBase]: For 4225/4253 co-relation queries the response was YES. [2024-06-27 18:01:14,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11182 conditions, 4480 events. 2102/4480 cut-off events. For 4225/4253 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 31171 event pairs, 500 based on Foata normal form. 12/4485 useless extension candidates. Maximal degree in co-relation 11155. Up to 2293 conditions per place. [2024-06-27 18:01:14,396 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 137 selfloop transitions, 12 changer transitions 0/179 dead transitions. [2024-06-27 18:01:14,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 179 transitions, 955 flow [2024-06-27 18:01:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 324 transitions. [2024-06-27 18:01:14,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2024-06-27 18:01:14,398 INFO L175 Difference]: Start difference. First operand has 101 places, 91 transitions, 363 flow. Second operand 6 states and 324 transitions. [2024-06-27 18:01:14,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 179 transitions, 955 flow [2024-06-27 18:01:14,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 179 transitions, 952 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:01:14,406 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 405 flow [2024-06-27 18:01:14,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=405, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-27 18:01:14,406 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 28 predicate places. [2024-06-27 18:01:14,407 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 405 flow [2024-06-27 18:01:14,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:14,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:14,407 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] [2024-06-27 18:01:14,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:01:14,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:14,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1531953865, now seen corresponding path program 2 times [2024-06-27 18:01:14,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:14,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250465907] [2024-06-27 18:01:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:14,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:14,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:14,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250465907] [2024-06-27 18:01:14,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250465907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:14,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:14,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:14,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784834269] [2024-06-27 18:01:14,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:14,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:01:14,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:14,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:01:14,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:01:14,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:14,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:14,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:14,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:14,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:14,927 INFO L124 PetriNetUnfolderBase]: 2081/4514 cut-off events. [2024-06-27 18:01:14,927 INFO L125 PetriNetUnfolderBase]: For 5300/5328 co-relation queries the response was YES. [2024-06-27 18:01:14,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11606 conditions, 4514 events. 2081/4514 cut-off events. For 5300/5328 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 31717 event pairs, 958 based on Foata normal form. 12/4517 useless extension candidates. Maximal degree in co-relation 11578. Up to 2626 conditions per place. [2024-06-27 18:01:14,948 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 121 selfloop transitions, 12 changer transitions 0/163 dead transitions. [2024-06-27 18:01:14,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 163 transitions, 900 flow [2024-06-27 18:01:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 309 transitions. [2024-06-27 18:01:14,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6058823529411764 [2024-06-27 18:01:14,950 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 405 flow. Second operand 6 states and 309 transitions. [2024-06-27 18:01:14,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 163 transitions, 900 flow [2024-06-27 18:01:14,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 163 transitions, 881 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:01:14,961 INFO L231 Difference]: Finished difference. Result has 107 places, 92 transitions, 418 flow [2024-06-27 18:01:14,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=107, PETRI_TRANSITIONS=92} [2024-06-27 18:01:14,962 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 30 predicate places. [2024-06-27 18:01:14,962 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 418 flow [2024-06-27 18:01:14,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:14,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:14,963 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] [2024-06-27 18:01:14,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:01:14,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:14,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1946105867, now seen corresponding path program 1 times [2024-06-27 18:01:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:14,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671591608] [2024-06-27 18:01:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671591608] [2024-06-27 18:01:15,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671591608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:15,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:15,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880255047] [2024-06-27 18:01:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:15,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:01:15,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:01:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:01:15,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:15,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:15,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:15,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:15,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:15,525 INFO L124 PetriNetUnfolderBase]: 2294/4986 cut-off events. [2024-06-27 18:01:15,525 INFO L125 PetriNetUnfolderBase]: For 5943/5971 co-relation queries the response was YES. [2024-06-27 18:01:15,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12836 conditions, 4986 events. 2294/4986 cut-off events. For 5943/5971 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 36082 event pairs, 1153 based on Foata normal form. 12/4984 useless extension candidates. Maximal degree in co-relation 12807. Up to 3262 conditions per place. [2024-06-27 18:01:15,550 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 119 selfloop transitions, 8 changer transitions 0/157 dead transitions. [2024-06-27 18:01:15,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 157 transitions, 872 flow [2024-06-27 18:01:15,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 306 transitions. [2024-06-27 18:01:15,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 18:01:15,552 INFO L175 Difference]: Start difference. First operand has 107 places, 92 transitions, 418 flow. Second operand 6 states and 306 transitions. [2024-06-27 18:01:15,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 157 transitions, 872 flow [2024-06-27 18:01:15,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 157 transitions, 850 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:01:15,565 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 426 flow [2024-06-27 18:01:15,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=426, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-27 18:01:15,566 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 32 predicate places. [2024-06-27 18:01:15,566 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 426 flow [2024-06-27 18:01:15,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:15,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:15,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:15,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:01:15,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:15,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash -569168129, now seen corresponding path program 2 times [2024-06-27 18:01:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:15,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245307747] [2024-06-27 18:01:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:15,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:15,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:15,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245307747] [2024-06-27 18:01:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245307747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:15,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:15,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:15,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916417988] [2024-06-27 18:01:15,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:15,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:01:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:15,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:01:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:01:15,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:15,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 426 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:15,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:15,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:15,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:16,183 INFO L124 PetriNetUnfolderBase]: 2498/5386 cut-off events. [2024-06-27 18:01:16,183 INFO L125 PetriNetUnfolderBase]: For 6845/6873 co-relation queries the response was YES. [2024-06-27 18:01:16,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13878 conditions, 5386 events. 2498/5386 cut-off events. For 6845/6873 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 39495 event pairs, 915 based on Foata normal form. 18/5383 useless extension candidates. Maximal degree in co-relation 13848. Up to 2792 conditions per place. [2024-06-27 18:01:16,209 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 143 selfloop transitions, 13 changer transitions 0/186 dead transitions. [2024-06-27 18:01:16,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 186 transitions, 1034 flow [2024-06-27 18:01:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 337 transitions. [2024-06-27 18:01:16,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2024-06-27 18:01:16,211 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 426 flow. Second operand 6 states and 337 transitions. [2024-06-27 18:01:16,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 186 transitions, 1034 flow [2024-06-27 18:01:16,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 186 transitions, 1014 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:01:16,224 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 456 flow [2024-06-27 18:01:16,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=456, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2024-06-27 18:01:16,225 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 34 predicate places. [2024-06-27 18:01:16,225 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 456 flow [2024-06-27 18:01:16,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:16,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:16,225 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] [2024-06-27 18:01:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:01:16,226 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:16,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:16,226 INFO L85 PathProgramCache]: Analyzing trace with hash -569159759, now seen corresponding path program 3 times [2024-06-27 18:01:16,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:16,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999471417] [2024-06-27 18:01:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:16,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999471417] [2024-06-27 18:01:16,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999471417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:16,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:16,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:16,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227425524] [2024-06-27 18:01:16,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:16,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:01:16,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:01:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:01:16,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:16,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 456 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:16,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:16,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:16,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:16,811 INFO L124 PetriNetUnfolderBase]: 2477/5452 cut-off events. [2024-06-27 18:01:16,812 INFO L125 PetriNetUnfolderBase]: For 7330/7358 co-relation queries the response was YES. [2024-06-27 18:01:16,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14030 conditions, 5452 events. 2477/5452 cut-off events. For 7330/7358 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 40298 event pairs, 1258 based on Foata normal form. 12/5455 useless extension candidates. Maximal degree in co-relation 13999. Up to 2983 conditions per place. [2024-06-27 18:01:16,833 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 131 selfloop transitions, 13 changer transitions 0/174 dead transitions. [2024-06-27 18:01:16,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 174 transitions, 995 flow [2024-06-27 18:01:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:16,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 323 transitions. [2024-06-27 18:01:16,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-27 18:01:16,835 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 456 flow. Second operand 6 states and 323 transitions. [2024-06-27 18:01:16,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 174 transitions, 995 flow [2024-06-27 18:01:16,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 174 transitions, 973 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:01:16,854 INFO L231 Difference]: Finished difference. Result has 113 places, 94 transitions, 469 flow [2024-06-27 18:01:16,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=113, PETRI_TRANSITIONS=94} [2024-06-27 18:01:16,855 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 36 predicate places. [2024-06-27 18:01:16,855 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 94 transitions, 469 flow [2024-06-27 18:01:16,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-06-27 18:01:16,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:16,855 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] [2024-06-27 18:01:16,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:01:16,856 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:16,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1827166601, now seen corresponding path program 1 times [2024-06-27 18:01:16,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:16,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562967940] [2024-06-27 18:01:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:16,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:16,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:16,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562967940] [2024-06-27 18:01:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562967940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:16,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:16,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:01:16,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455103549] [2024-06-27 18:01:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:16,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:01:16,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:16,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:01:16,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:01:16,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 85 [2024-06-27 18:01:16,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 94 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-06-27 18:01:16,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:16,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 85 [2024-06-27 18:01:16,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:17,233 INFO L124 PetriNetUnfolderBase]: 1485/3593 cut-off events. [2024-06-27 18:01:17,233 INFO L125 PetriNetUnfolderBase]: For 3462/3462 co-relation queries the response was YES. [2024-06-27 18:01:17,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9371 conditions, 3593 events. 1485/3593 cut-off events. For 3462/3462 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 25730 event pairs, 486 based on Foata normal form. 413/3909 useless extension candidates. Maximal degree in co-relation 9338. Up to 1696 conditions per place. [2024-06-27 18:01:17,247 INFO L140 encePairwiseOnDemand]: 67/85 looper letters, 74 selfloop transitions, 19 changer transitions 0/123 dead transitions. [2024-06-27 18:01:17,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 760 flow [2024-06-27 18:01:17,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:01:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:01:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-06-27 18:01:17,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694117647058824 [2024-06-27 18:01:17,261 INFO L175 Difference]: Start difference. First operand has 113 places, 94 transitions, 469 flow. Second operand 5 states and 242 transitions. [2024-06-27 18:01:17,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 123 transitions, 760 flow [2024-06-27 18:01:17,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 123 transitions, 722 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:01:17,275 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 512 flow [2024-06-27 18:01:17,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2024-06-27 18:01:17,275 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 36 predicate places. [2024-06-27 18:01:17,276 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 512 flow [2024-06-27 18:01:17,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-06-27 18:01:17,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:17,276 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] [2024-06-27 18:01:17,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:01:17,276 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:17,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2035151064, now seen corresponding path program 1 times [2024-06-27 18:01:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:17,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328343846] [2024-06-27 18:01:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:17,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:17,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:17,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328343846] [2024-06-27 18:01:17,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328343846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:17,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:17,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:01:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340023931] [2024-06-27 18:01:17,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:17,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:01:17,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:01:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:01:17,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 85 [2024-06-27 18:01:17,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 512 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 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) [2024-06-27 18:01:17,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:17,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 85 [2024-06-27 18:01:17,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:17,983 INFO L124 PetriNetUnfolderBase]: 3194/6831 cut-off events. [2024-06-27 18:01:17,983 INFO L125 PetriNetUnfolderBase]: For 6724/6724 co-relation queries the response was YES. [2024-06-27 18:01:17,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19656 conditions, 6831 events. 3194/6831 cut-off events. For 6724/6724 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 50316 event pairs, 1669 based on Foata normal form. 110/6928 useless extension candidates. Maximal degree in co-relation 19622. Up to 2324 conditions per place. [2024-06-27 18:01:18,014 INFO L140 encePairwiseOnDemand]: 67/85 looper letters, 149 selfloop transitions, 35 changer transitions 8/211 dead transitions. [2024-06-27 18:01:18,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 211 transitions, 1389 flow [2024-06-27 18:01:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:01:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:01:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 367 transitions. [2024-06-27 18:01:18,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797385620915033 [2024-06-27 18:01:18,015 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 512 flow. Second operand 9 states and 367 transitions. [2024-06-27 18:01:18,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 211 transitions, 1389 flow [2024-06-27 18:01:18,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 211 transitions, 1386 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:01:18,035 INFO L231 Difference]: Finished difference. Result has 122 places, 114 transitions, 701 flow [2024-06-27 18:01:18,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=701, PETRI_PLACES=122, PETRI_TRANSITIONS=114} [2024-06-27 18:01:18,036 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 45 predicate places. [2024-06-27 18:01:18,036 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 114 transitions, 701 flow [2024-06-27 18:01:18,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 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) [2024-06-27 18:01:18,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:18,036 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] [2024-06-27 18:01:18,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:01:18,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:18,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:18,037 INFO L85 PathProgramCache]: Analyzing trace with hash 21397344, now seen corresponding path program 2 times [2024-06-27 18:01:18,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:18,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976829287] [2024-06-27 18:01:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:18,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:18,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:18,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976829287] [2024-06-27 18:01:18,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976829287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:18,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:18,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:18,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588170271] [2024-06-27 18:01:18,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:18,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:18,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:18,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:18,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:18,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 85 [2024-06-27 18:01:18,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 701 flow. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2024-06-27 18:01:18,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:18,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 85 [2024-06-27 18:01:18,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:18,649 INFO L124 PetriNetUnfolderBase]: 2574/5539 cut-off events. [2024-06-27 18:01:18,650 INFO L125 PetriNetUnfolderBase]: For 7636/7636 co-relation queries the response was YES. [2024-06-27 18:01:18,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17440 conditions, 5539 events. 2574/5539 cut-off events. For 7636/7636 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 40161 event pairs, 1530 based on Foata normal form. 123/5635 useless extension candidates. Maximal degree in co-relation 17403. Up to 3410 conditions per place. [2024-06-27 18:01:18,671 INFO L140 encePairwiseOnDemand]: 70/85 looper letters, 95 selfloop transitions, 30 changer transitions 9/156 dead transitions. [2024-06-27 18:01:18,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 156 transitions, 1158 flow [2024-06-27 18:01:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 254 transitions. [2024-06-27 18:01:18,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2024-06-27 18:01:18,677 INFO L175 Difference]: Start difference. First operand has 122 places, 114 transitions, 701 flow. Second operand 6 states and 254 transitions. [2024-06-27 18:01:18,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 156 transitions, 1158 flow [2024-06-27 18:01:18,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 156 transitions, 1143 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:01:18,694 INFO L231 Difference]: Finished difference. Result has 126 places, 112 transitions, 781 flow [2024-06-27 18:01:18,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=781, PETRI_PLACES=126, PETRI_TRANSITIONS=112} [2024-06-27 18:01:18,695 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 49 predicate places. [2024-06-27 18:01:18,695 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 112 transitions, 781 flow [2024-06-27 18:01:18,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2024-06-27 18:01:18,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:18,695 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] [2024-06-27 18:01:18,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:01:18,695 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:18,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash 621170497, now seen corresponding path program 1 times [2024-06-27 18:01:18,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:18,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181388873] [2024-06-27 18:01:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:18,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181388873] [2024-06-27 18:01:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181388873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:01:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923316439] [2024-06-27 18:01:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:01:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:01:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:01:18,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:18,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 112 transitions, 781 flow. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:18,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:18,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:18,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:19,306 INFO L124 PetriNetUnfolderBase]: 2610/6179 cut-off events. [2024-06-27 18:01:19,307 INFO L125 PetriNetUnfolderBase]: For 13988/14002 co-relation queries the response was YES. [2024-06-27 18:01:19,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19984 conditions, 6179 events. 2610/6179 cut-off events. For 13988/14002 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 49361 event pairs, 976 based on Foata normal form. 28/6183 useless extension candidates. Maximal degree in co-relation 19946. Up to 1983 conditions per place. [2024-06-27 18:01:19,342 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 179 selfloop transitions, 15 changer transitions 5/234 dead transitions. [2024-06-27 18:01:19,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 234 transitions, 1980 flow [2024-06-27 18:01:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:01:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:01:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 370 transitions. [2024-06-27 18:01:19,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6218487394957983 [2024-06-27 18:01:19,343 INFO L175 Difference]: Start difference. First operand has 126 places, 112 transitions, 781 flow. Second operand 7 states and 370 transitions. [2024-06-27 18:01:19,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 234 transitions, 1980 flow [2024-06-27 18:01:19,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 234 transitions, 1852 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:01:19,376 INFO L231 Difference]: Finished difference. Result has 128 places, 112 transitions, 756 flow [2024-06-27 18:01:19,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=756, PETRI_PLACES=128, PETRI_TRANSITIONS=112} [2024-06-27 18:01:19,377 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 51 predicate places. [2024-06-27 18:01:19,377 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 112 transitions, 756 flow [2024-06-27 18:01:19,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:19,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:19,377 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] [2024-06-27 18:01:19,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:01:19,377 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:19,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 425889620, now seen corresponding path program 1 times [2024-06-27 18:01:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:19,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684751761] [2024-06-27 18:01:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:19,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:19,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684751761] [2024-06-27 18:01:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684751761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:19,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:19,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:01:19,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287915504] [2024-06-27 18:01:19,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:19,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:01:19,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:01:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:01:19,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:19,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 112 transitions, 756 flow. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:19,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:19,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:19,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:20,079 INFO L124 PetriNetUnfolderBase]: 3058/7153 cut-off events. [2024-06-27 18:01:20,079 INFO L125 PetriNetUnfolderBase]: For 15211/15245 co-relation queries the response was YES. [2024-06-27 18:01:20,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22890 conditions, 7153 events. 3058/7153 cut-off events. For 15211/15245 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 59258 event pairs, 1308 based on Foata normal form. 12/7141 useless extension candidates. Maximal degree in co-relation 22851. Up to 3249 conditions per place. [2024-06-27 18:01:20,118 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 161 selfloop transitions, 14 changer transitions 3/213 dead transitions. [2024-06-27 18:01:20,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 213 transitions, 1665 flow [2024-06-27 18:01:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:01:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:01:20,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 364 transitions. [2024-06-27 18:01:20,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.611764705882353 [2024-06-27 18:01:20,120 INFO L175 Difference]: Start difference. First operand has 128 places, 112 transitions, 756 flow. Second operand 7 states and 364 transitions. [2024-06-27 18:01:20,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 213 transitions, 1665 flow [2024-06-27 18:01:20,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 213 transitions, 1629 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:01:20,156 INFO L231 Difference]: Finished difference. Result has 128 places, 112 transitions, 759 flow [2024-06-27 18:01:20,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=759, PETRI_PLACES=128, PETRI_TRANSITIONS=112} [2024-06-27 18:01:20,157 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 51 predicate places. [2024-06-27 18:01:20,157 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 112 transitions, 759 flow [2024-06-27 18:01:20,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:20,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:20,157 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] [2024-06-27 18:01:20,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:01:20,158 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:20,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1603824361, now seen corresponding path program 2 times [2024-06-27 18:01:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:20,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731245250] [2024-06-27 18:01:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:20,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:20,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:20,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731245250] [2024-06-27 18:01:20,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731245250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:20,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:20,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:01:20,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076430664] [2024-06-27 18:01:20,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:20,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:01:20,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:20,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:01:20,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:01:20,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:20,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 112 transitions, 759 flow. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:20,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:20,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:20,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:21,041 INFO L124 PetriNetUnfolderBase]: 3466/8235 cut-off events. [2024-06-27 18:01:21,041 INFO L125 PetriNetUnfolderBase]: For 15325/15325 co-relation queries the response was YES. [2024-06-27 18:01:21,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26286 conditions, 8235 events. 3466/8235 cut-off events. For 15325/15325 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 70523 event pairs, 1670 based on Foata normal form. 14/8225 useless extension candidates. Maximal degree in co-relation 26248. Up to 3645 conditions per place. [2024-06-27 18:01:21,094 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 158 selfloop transitions, 17 changer transitions 5/215 dead transitions. [2024-06-27 18:01:21,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 215 transitions, 1724 flow [2024-06-27 18:01:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:01:21,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:01:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-06-27 18:01:21,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 18:01:21,096 INFO L175 Difference]: Start difference. First operand has 128 places, 112 transitions, 759 flow. Second operand 7 states and 357 transitions. [2024-06-27 18:01:21,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 215 transitions, 1724 flow [2024-06-27 18:01:21,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 215 transitions, 1679 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 18:01:21,138 INFO L231 Difference]: Finished difference. Result has 126 places, 112 transitions, 760 flow [2024-06-27 18:01:21,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=760, PETRI_PLACES=126, PETRI_TRANSITIONS=112} [2024-06-27 18:01:21,139 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 49 predicate places. [2024-06-27 18:01:21,139 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 112 transitions, 760 flow [2024-06-27 18:01:21,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:21,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:21,139 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] [2024-06-27 18:01:21,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:01:21,139 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:21,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash 553322426, now seen corresponding path program 2 times [2024-06-27 18:01:21,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:21,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304977738] [2024-06-27 18:01:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:21,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:21,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:21,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304977738] [2024-06-27 18:01:21,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304977738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:21,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:21,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:01:21,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955369296] [2024-06-27 18:01:21,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:21,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:01:21,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:21,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:01:21,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:01:21,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:21,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 112 transitions, 760 flow. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:21,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:21,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:21,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:22,032 INFO L124 PetriNetUnfolderBase]: 3908/9312 cut-off events. [2024-06-27 18:01:22,032 INFO L125 PetriNetUnfolderBase]: For 17572/17602 co-relation queries the response was YES. [2024-06-27 18:01:22,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29223 conditions, 9312 events. 3908/9312 cut-off events. For 17572/17602 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 82204 event pairs, 1955 based on Foata normal form. 16/9304 useless extension candidates. Maximal degree in co-relation 29188. Up to 4480 conditions per place. [2024-06-27 18:01:22,091 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 175 selfloop transitions, 14 changer transitions 7/231 dead transitions. [2024-06-27 18:01:22,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 231 transitions, 1780 flow [2024-06-27 18:01:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:01:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:01:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 387 transitions. [2024-06-27 18:01:22,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504201680672269 [2024-06-27 18:01:22,093 INFO L175 Difference]: Start difference. First operand has 126 places, 112 transitions, 760 flow. Second operand 7 states and 387 transitions. [2024-06-27 18:01:22,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 231 transitions, 1780 flow [2024-06-27 18:01:22,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 231 transitions, 1736 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:01:22,134 INFO L231 Difference]: Finished difference. Result has 126 places, 112 transitions, 752 flow [2024-06-27 18:01:22,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=126, PETRI_TRANSITIONS=112} [2024-06-27 18:01:22,135 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 49 predicate places. [2024-06-27 18:01:22,135 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 112 transitions, 752 flow [2024-06-27 18:01:22,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:22,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:22,136 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] [2024-06-27 18:01:22,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:01:22,136 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:22,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1480630006, now seen corresponding path program 3 times [2024-06-27 18:01:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918192719] [2024-06-27 18:01:22,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:22,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:22,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918192719] [2024-06-27 18:01:22,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918192719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:22,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:22,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:01:22,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81263265] [2024-06-27 18:01:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:22,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:01:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:01:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:01:22,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-27 18:01:22,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 112 transitions, 752 flow. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:22,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:22,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-27 18:01:22,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:23,155 INFO L124 PetriNetUnfolderBase]: 3891/9263 cut-off events. [2024-06-27 18:01:23,155 INFO L125 PetriNetUnfolderBase]: For 16581/16609 co-relation queries the response was YES. [2024-06-27 18:01:23,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29103 conditions, 9263 events. 3891/9263 cut-off events. For 16581/16609 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 81561 event pairs, 2174 based on Foata normal form. 12/9251 useless extension candidates. Maximal degree in co-relation 29068. Up to 4440 conditions per place. [2024-06-27 18:01:23,209 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 154 selfloop transitions, 17 changer transitions 4/210 dead transitions. [2024-06-27 18:01:23,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 210 transitions, 1622 flow [2024-06-27 18:01:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:01:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:01:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 369 transitions. [2024-06-27 18:01:23,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6201680672268908 [2024-06-27 18:01:23,210 INFO L175 Difference]: Start difference. First operand has 126 places, 112 transitions, 752 flow. Second operand 7 states and 369 transitions. [2024-06-27 18:01:23,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 210 transitions, 1622 flow [2024-06-27 18:01:23,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 210 transitions, 1560 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 18:01:23,243 INFO L231 Difference]: Finished difference. Result has 120 places, 111 transitions, 708 flow [2024-06-27 18:01:23,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=708, PETRI_PLACES=120, PETRI_TRANSITIONS=111} [2024-06-27 18:01:23,243 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 43 predicate places. [2024-06-27 18:01:23,243 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 708 flow [2024-06-27 18:01:23,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 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) [2024-06-27 18:01:23,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:23,244 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, 1] [2024-06-27 18:01:23,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:01:23,244 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:23,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash -390825244, now seen corresponding path program 1 times [2024-06-27 18:01:23,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:23,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742259084] [2024-06-27 18:01:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:23,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742259084] [2024-06-27 18:01:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742259084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:23,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:01:23,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607324311] [2024-06-27 18:01:23,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:23,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:01:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:01:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:01:23,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 85 [2024-06-27 18:01:23,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 708 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-06-27 18:01:23,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:23,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 85 [2024-06-27 18:01:23,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:24,042 INFO L124 PetriNetUnfolderBase]: 4122/8966 cut-off events. [2024-06-27 18:01:24,043 INFO L125 PetriNetUnfolderBase]: For 13533/13533 co-relation queries the response was YES. [2024-06-27 18:01:24,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28070 conditions, 8966 events. 4122/8966 cut-off events. For 13533/13533 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 73540 event pairs, 2315 based on Foata normal form. 42/8981 useless extension candidates. Maximal degree in co-relation 28041. Up to 6449 conditions per place. [2024-06-27 18:01:24,089 INFO L140 encePairwiseOnDemand]: 75/85 looper letters, 106 selfloop transitions, 39 changer transitions 0/166 dead transitions. [2024-06-27 18:01:24,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 166 transitions, 1348 flow [2024-06-27 18:01:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:01:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:01:24,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-06-27 18:01:24,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247058823529411 [2024-06-27 18:01:24,090 INFO L175 Difference]: Start difference. First operand has 120 places, 111 transitions, 708 flow. Second operand 5 states and 223 transitions. [2024-06-27 18:01:24,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 166 transitions, 1348 flow [2024-06-27 18:01:24,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 166 transitions, 1319 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 18:01:24,115 INFO L231 Difference]: Finished difference. Result has 123 places, 127 transitions, 981 flow [2024-06-27 18:01:24,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=981, PETRI_PLACES=123, PETRI_TRANSITIONS=127} [2024-06-27 18:01:24,115 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-06-27 18:01:24,116 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 127 transitions, 981 flow [2024-06-27 18:01:24,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-06-27 18:01:24,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:24,116 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, 1, 1, 1, 1, 1] [2024-06-27 18:01:24,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:01:24,116 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:24,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash -90247997, now seen corresponding path program 1 times [2024-06-27 18:01:24,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:24,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93047775] [2024-06-27 18:01:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:24,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:24,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93047775] [2024-06-27 18:01:24,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93047775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:24,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:24,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:24,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21542307] [2024-06-27 18:01:24,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:24,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:24,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 85 [2024-06-27 18:01:24,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 127 transitions, 981 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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) [2024-06-27 18:01:24,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:24,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 85 [2024-06-27 18:01:24,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:24,694 INFO L124 PetriNetUnfolderBase]: 2341/5658 cut-off events. [2024-06-27 18:01:24,694 INFO L125 PetriNetUnfolderBase]: For 10941/10961 co-relation queries the response was YES. [2024-06-27 18:01:24,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18458 conditions, 5658 events. 2341/5658 cut-off events. For 10941/10961 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 45139 event pairs, 797 based on Foata normal form. 90/5706 useless extension candidates. Maximal degree in co-relation 18425. Up to 4040 conditions per place. [2024-06-27 18:01:24,721 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 85 selfloop transitions, 6 changer transitions 11/132 dead transitions. [2024-06-27 18:01:24,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 132 transitions, 1186 flow [2024-06-27 18:01:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:01:24,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:01:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-06-27 18:01:24,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2024-06-27 18:01:24,723 INFO L175 Difference]: Start difference. First operand has 123 places, 127 transitions, 981 flow. Second operand 4 states and 192 transitions. [2024-06-27 18:01:24,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 132 transitions, 1186 flow [2024-06-27 18:01:24,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 132 transitions, 1091 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:01:24,752 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 741 flow [2024-06-27 18:01:24,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=741, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2024-06-27 18:01:24,753 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-06-27 18:01:24,753 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 741 flow [2024-06-27 18:01:24,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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) [2024-06-27 18:01:24,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:24,753 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, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:24,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:01:24,754 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:24,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:24,754 INFO L85 PathProgramCache]: Analyzing trace with hash 977121669, now seen corresponding path program 1 times [2024-06-27 18:01:24,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:24,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58042607] [2024-06-27 18:01:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:24,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:24,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58042607] [2024-06-27 18:01:24,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58042607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:24,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:24,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:01:24,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088426516] [2024-06-27 18:01:24,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:24,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:01:24,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:24,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:01:24,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:01:24,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 85 [2024-06-27 18:01:24,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 741 flow. Second operand has 8 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 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) [2024-06-27 18:01:24,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:24,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 85 [2024-06-27 18:01:24,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:25,232 INFO L124 PetriNetUnfolderBase]: 1637/3960 cut-off events. [2024-06-27 18:01:25,232 INFO L125 PetriNetUnfolderBase]: For 6023/6025 co-relation queries the response was YES. [2024-06-27 18:01:25,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12542 conditions, 3960 events. 1637/3960 cut-off events. For 6023/6025 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 28693 event pairs, 685 based on Foata normal form. 109/4046 useless extension candidates. Maximal degree in co-relation 12509. Up to 2069 conditions per place. [2024-06-27 18:01:25,247 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 91 selfloop transitions, 6 changer transitions 6/129 dead transitions. [2024-06-27 18:01:25,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 129 transitions, 1159 flow [2024-06-27 18:01:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:01:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:01:25,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2024-06-27 18:01:25,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2024-06-27 18:01:25,252 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 741 flow. Second operand 5 states and 220 transitions. [2024-06-27 18:01:25,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 129 transitions, 1159 flow [2024-06-27 18:01:25,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 129 transitions, 1093 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:01:25,269 INFO L231 Difference]: Finished difference. Result has 107 places, 95 transitions, 634 flow [2024-06-27 18:01:25,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=634, PETRI_PLACES=107, PETRI_TRANSITIONS=95} [2024-06-27 18:01:25,270 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 30 predicate places. [2024-06-27 18:01:25,270 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 95 transitions, 634 flow [2024-06-27 18:01:25,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 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) [2024-06-27 18:01:25,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:25,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:25,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:01:25,270 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-27 18:01:25,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:25,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1950714526, now seen corresponding path program 1 times [2024-06-27 18:01:25,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:25,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848136469] [2024-06-27 18:01:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:25,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:25,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848136469] [2024-06-27 18:01:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848136469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:25,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:25,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:25,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199119316] [2024-06-27 18:01:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:25,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:25,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:25,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:25,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 85 [2024-06-27 18:01:25,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 95 transitions, 634 flow. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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) [2024-06-27 18:01:25,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:25,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 85 [2024-06-27 18:01:25,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:25,666 INFO L124 PetriNetUnfolderBase]: 1832/4003 cut-off events. [2024-06-27 18:01:25,666 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2024-06-27 18:01:25,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12664 conditions, 4003 events. 1832/4003 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 27382 event pairs, 1147 based on Foata normal form. 52/4028 useless extension candidates. Maximal degree in co-relation 12633. Up to 2569 conditions per place. [2024-06-27 18:01:25,678 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 0 selfloop transitions, 0 changer transitions 125/125 dead transitions. [2024-06-27 18:01:25,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 125 transitions, 1039 flow [2024-06-27 18:01:25,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-06-27 18:01:25,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43529411764705883 [2024-06-27 18:01:25,680 INFO L175 Difference]: Start difference. First operand has 107 places, 95 transitions, 634 flow. Second operand 6 states and 222 transitions. [2024-06-27 18:01:25,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 125 transitions, 1039 flow [2024-06-27 18:01:25,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 125 transitions, 1018 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 18:01:25,689 INFO L231 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2024-06-27 18:01:25,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2024-06-27 18:01:25,690 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 29 predicate places. [2024-06-27 18:01:25,690 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2024-06-27 18:01:25,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 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) [2024-06-27 18:01:25,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-27 18:01:25,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-27 18:01:25,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2024-06-27 18:01:25,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2024-06-27 18:01:25,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2024-06-27 18:01:25,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2024-06-27 18:01:25,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-27 18:01:25,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-27 18:01:25,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:01:25,694 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:25,697 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:01:25,698 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:01:25,702 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 18:01:25,703 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 18:01:25,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:01:25 BasicIcfg [2024-06-27 18:01:25,703 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:01:25,704 INFO L158 Benchmark]: Toolchain (without parser) took 19300.34ms. Allocated memory was 125.8MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 93.9MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 421.6MB. Max. memory is 16.1GB. [2024-06-27 18:01:25,704 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 125.8MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:01:25,704 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 125.8MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:01:25,704 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.77ms. Allocated memory is still 125.8MB. Free memory was 93.3MB in the beginning and 63.3MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-27 18:01:25,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.79ms. Allocated memory is still 125.8MB. Free memory was 63.3MB in the beginning and 61.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:01:25,705 INFO L158 Benchmark]: Boogie Preprocessor took 41.78ms. Allocated memory is still 125.8MB. Free memory was 61.2MB in the beginning and 58.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 18:01:25,705 INFO L158 Benchmark]: RCFGBuilder took 539.30ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 58.4MB in the beginning and 104.8MB in the end (delta: -46.4MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2024-06-27 18:01:25,705 INFO L158 Benchmark]: TraceAbstraction took 18210.91ms. Allocated memory was 159.4MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 103.7MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 398.1MB. Max. memory is 16.1GB. [2024-06-27 18:01:25,706 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 0.12ms. Allocated memory is still 125.8MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.07ms. Allocated memory is still 125.8MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.77ms. Allocated memory is still 125.8MB. Free memory was 93.3MB in the beginning and 63.3MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.79ms. Allocated memory is still 125.8MB. Free memory was 63.3MB in the beginning and 61.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.78ms. Allocated memory is still 125.8MB. Free memory was 61.2MB in the beginning and 58.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 539.30ms. Allocated memory was 125.8MB in the beginning and 159.4MB in the end (delta: 33.6MB). Free memory was 58.4MB in the beginning and 104.8MB in the end (delta: -46.4MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18210.91ms. Allocated memory was 159.4MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 103.7MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 398.1MB. 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 8 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: 18.1s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2401 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2265 mSDsluCounter, 180 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 103 mSDsCounter, 185 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6140 IncrementalHoareTripleChecker+Invalid, 6325 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 185 mSolverCounterUnsat, 77 mSDtfsCounter, 6140 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=981occurred in iteration=23, InterpolantAutomatonStates: 146, 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, 1.9s InterpolantComputationTime, 585 NumberOfCodeBlocks, 585 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 559 ConstructedInterpolants, 0 QuantifiedInterpolants, 3704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 18:01:25,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE