./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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/pthread-ext/01b_inc-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc-pthread.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:01:07,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:01:07,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:01:07,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:01:07,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:01:07,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:01:07,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:01:07,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:01:07,406 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:01:07,410 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:01:07,410 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:01:07,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:01:07,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:01:07,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:01:07,413 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:01:07,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:01:07,413 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:01:07,414 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:01:07,414 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:01:07,414 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:01:07,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:01:07,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:01:07,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:01:07,415 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:01:07,416 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:01:07,416 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:01:07,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:01:07,417 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:01:07,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:01:07,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:01:07,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:01:07,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:01:07,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:07,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:01:07,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:01:07,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:01:07,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:01:07,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:01:07,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:01:07,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:01:07,421 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:01:07,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:01:07,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:01:07,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:01:07,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:01:07,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:01:07,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:01:07,764 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:01:07,765 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:01:07,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc-pthread.yml/witness.yml [2024-01-31 16:01:07,889 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:01:07,890 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:01:07,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2024-01-31 16:01:09,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:01:09,299 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:01:09,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2024-01-31 16:01:09,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271134675/9cb1bfc119b34faebab6035007ab22af/FLAGe87feafd2 [2024-01-31 16:01:09,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271134675/9cb1bfc119b34faebab6035007ab22af [2024-01-31 16:01:09,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:01:09,337 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:01:09,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:09,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:01:09,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:01:09,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:07" (1/2) ... [2024-01-31 16:01:09,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cea77a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:09, skipping insertion in model container [2024-01-31 16:01:09,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:07" (1/2) ... [2024-01-31 16:01:09,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@219c4e41 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:09, skipping insertion in model container [2024-01-31 16:01:09,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:09" (2/2) ... [2024-01-31 16:01:09,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cea77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09, skipping insertion in model container [2024-01-31 16:01:09,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:09" (2/2) ... [2024-01-31 16:01:09,348 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:01:09,438 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:01:09,440 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-01-31 16:01:09,441 INFO L98 nessWitnessExtractor]: Location invariant after [L700-L700] (((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-01-31 16:01:09,441 INFO L98 nessWitnessExtractor]: Location invariant after [L697-L697] ((((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U) [2024-01-31 16:01:09,441 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] ((((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U) [2024-01-31 16:01:09,441 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,442 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-01-31 16:01:09,442 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,442 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] ((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-01-31 16:01:09,442 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-01-31 16:01:09,443 INFO L98 nessWitnessExtractor]: Location invariant after [L697-L697] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-01-31 16:01:09,443 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] ((((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U) [2024-01-31 16:01:09,443 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] (((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-01-31 16:01:09,443 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] ((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-01-31 16:01:09,443 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (((0U == v) && (v == 0U)) && ((unsigned int )value == 4294967295U)) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,443 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] (((((unsigned int )value <= 4294967294U) && (0U == v)) && (v == 0U)) && ((unsigned long )arg == 0UL)) && ((unsigned int )value != 4294967295U) [2024-01-31 16:01:09,444 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] ((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-01-31 16:01:09,444 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,444 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-01-31 16:01:09,444 INFO L98 nessWitnessExtractor]: Location invariant after [L690-L690] (unsigned long )arg == 0UL [2024-01-31 16:01:09,489 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:01:09,789 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i[30747,30760] [2024-01-31 16:01:09,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:09,818 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:01:09,846 WARN L424 MainDispatcher]: Unable to annotate unsigned with a witness entry [2024-01-31 16:01:09,846 WARN L424 MainDispatcher]: Unable to annotate v = 0 with a witness entry 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 [2024-01-31 16:01:09,886 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i[30747,30760] Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:01:09,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:09,934 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:01:09,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09 WrapperNode [2024-01-31 16:01:09,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:09,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:09,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:01:09,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:01:09,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:09,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:09,985 INFO L138 Inliner]: procedures = 164, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-01-31 16:01:09,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:09,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:01:09,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:01:09,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:01:09,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:09,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:09,998 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:10,029 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-01-31 16:01:10,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:10,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:10,040 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:10,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:10,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:10,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:10,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:01:10,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:01:10,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:01:10,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:01:10,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (1/1) ... [2024-01-31 16:01:10,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:10,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:01:10,103 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) [2024-01-31 16:01:10,105 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 [2024-01-31 16:01:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:01:10,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:01:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:01:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:01:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:01:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 16:01:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:01:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:01:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:01:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:01:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:01:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:01:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:01:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:01:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 16:01:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:01:10,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:01:10,137 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:01:10,241 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:01:10,243 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:01:10,467 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:01:10,467 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:01:10,596 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:01:10,596 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-31 16:01:10,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:10 BoogieIcfgContainer [2024-01-31 16:01:10,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:01:10,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:01:10,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:01:10,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:01:10,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:07" (1/4) ... [2024-01-31 16:01:10,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aea4a8a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:01:10, skipping insertion in model container [2024-01-31 16:01:10,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:01:09" (2/4) ... [2024-01-31 16:01:10,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aea4a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:01:10, skipping insertion in model container [2024-01-31 16:01:10,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09" (3/4) ... [2024-01-31 16:01:10,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aea4a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:01:10, skipping insertion in model container [2024-01-31 16:01:10,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:10" (4/4) ... [2024-01-31 16:01:10,608 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2024-01-31 16:01:10,625 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:01:10,625 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-01-31 16:01:10,625 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:01:10,705 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:10,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 88 flow [2024-01-31 16:01:10,787 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-01-31 16:01:10,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:10,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-01-31 16:01:10,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 88 flow [2024-01-31 16:01:10,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 42 transitions, 88 flow [2024-01-31 16:01:10,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:10,820 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;@5dbac8a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:10,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-01-31 16:01:10,827 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:10,828 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-01-31 16:01:10,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:10,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:10,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:10,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-01-31 16:01:10,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:10,837 INFO L85 PathProgramCache]: Analyzing trace with hash 215718419, now seen corresponding path program 1 times [2024-01-31 16:01:10,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:10,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436095062] [2024-01-31 16:01:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:10,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436095062] [2024-01-31 16:01:11,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436095062] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:11,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604895573] [2024-01-31 16:01:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:11,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:11,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:11,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 42 [2024-01-31 16:01:11,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-01-31 16:01:11,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:11,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 42 [2024-01-31 16:01:11,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:11,533 INFO L124 PetriNetUnfolderBase]: 28/129 cut-off events. [2024-01-31 16:01:11,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:11,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 129 events. 28/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 468 event pairs, 20 based on Foata normal form. 6/109 useless extension candidates. Maximal degree in co-relation 189. Up to 53 conditions per place. [2024-01-31 16:01:11,538 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 18 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-01-31 16:01:11,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 122 flow [2024-01-31 16:01:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:11,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-01-31 16:01:11,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-01-31 16:01:11,554 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 88 flow. Second operand 4 states and 98 transitions. [2024-01-31 16:01:11,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 122 flow [2024-01-31 16:01:11,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:11,560 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 80 flow [2024-01-31 16:01:11,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-01-31 16:01:11,565 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2024-01-31 16:01:11,566 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 80 flow [2024-01-31 16:01:11,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-01-31 16:01:11,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:11,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-31 16:01:11,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:01:11,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-01-31 16:01:11,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1902665624, now seen corresponding path program 1 times [2024-01-31 16:01:11,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:11,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058068555] [2024-01-31 16:01:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:11,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:11,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:01:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:11,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:01:11,648 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:01:11,650 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-01-31 16:01:11,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 31 remaining) [2024-01-31 16:01:11,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 31 remaining) [2024-01-31 16:01:11,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 31 remaining) [2024-01-31 16:01:11,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 31 remaining) [2024-01-31 16:01:11,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 31 remaining) [2024-01-31 16:01:11,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 31 remaining) [2024-01-31 16:01:11,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 31 remaining) [2024-01-31 16:01:11,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 31 remaining) [2024-01-31 16:01:11,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 31 remaining) [2024-01-31 16:01:11,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 31 remaining) [2024-01-31 16:01:11,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 31 remaining) [2024-01-31 16:01:11,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 31 remaining) [2024-01-31 16:01:11,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (17 of 31 remaining) [2024-01-31 16:01:11,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 31 remaining) [2024-01-31 16:01:11,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 31 remaining) [2024-01-31 16:01:11,664 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 31 remaining) [2024-01-31 16:01:11,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 31 remaining) [2024-01-31 16:01:11,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 31 remaining) [2024-01-31 16:01:11,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 31 remaining) [2024-01-31 16:01:11,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 31 remaining) [2024-01-31 16:01:11,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 31 remaining) [2024-01-31 16:01:11,669 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 31 remaining) [2024-01-31 16:01:11,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 31 remaining) [2024-01-31 16:01:11,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 31 remaining) [2024-01-31 16:01:11,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 31 remaining) [2024-01-31 16:01:11,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 31 remaining) [2024-01-31 16:01:11,670 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 31 remaining) [2024-01-31 16:01:11,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (2 of 31 remaining) [2024-01-31 16:01:11,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 31 remaining) [2024-01-31 16:01:11,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 31 remaining) [2024-01-31 16:01:11,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:01:11,672 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-31 16:01:11,676 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:01:11,676 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:01:11,732 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:11,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 79 transitions, 168 flow [2024-01-31 16:01:11,771 INFO L124 PetriNetUnfolderBase]: 2/84 cut-off events. [2024-01-31 16:01:11,771 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:01:11,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 84 events. 2/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 249 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2024-01-31 16:01:11,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 79 transitions, 168 flow [2024-01-31 16:01:11,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 168 flow [2024-01-31 16:01:11,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:11,778 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;@5dbac8a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:11,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-01-31 16:01:11,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:11,781 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-01-31 16:01:11,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:11,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:11,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:11,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-31 16:01:11,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:11,782 INFO L85 PathProgramCache]: Analyzing trace with hash 291144262, now seen corresponding path program 1 times [2024-01-31 16:01:11,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:11,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826482807] [2024-01-31 16:01:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:11,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:11,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:11,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826482807] [2024-01-31 16:01:11,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826482807] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:11,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:11,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:11,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783790099] [2024-01-31 16:01:11,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:11,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:11,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:11,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-01-31 16:01:11,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2024-01-31 16:01:11,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:11,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-01-31 16:01:11,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:12,404 INFO L124 PetriNetUnfolderBase]: 907/2259 cut-off events. [2024-01-31 16:01:12,405 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-01-31 16:01:12,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3804 conditions, 2259 events. 907/2259 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 17423 event pairs, 655 based on Foata normal form. 78/1814 useless extension candidates. Maximal degree in co-relation 3163. Up to 1084 conditions per place. [2024-01-31 16:01:12,425 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 44 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-01-31 16:01:12,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 279 flow [2024-01-31 16:01:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-01-31 16:01:12,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6772151898734177 [2024-01-31 16:01:12,433 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 168 flow. Second operand 4 states and 214 transitions. [2024-01-31 16:01:12,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 279 flow [2024-01-31 16:01:12,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 85 transitions, 279 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:12,437 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 154 flow [2024-01-31 16:01:12,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-01-31 16:01:12,438 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2024-01-31 16:01:12,438 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 154 flow [2024-01-31 16:01:12,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2024-01-31 16:01:12,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:12,439 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:12,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:01:12,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-31 16:01:12,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:12,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1903598763, now seen corresponding path program 1 times [2024-01-31 16:01:12,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768472714] [2024-01-31 16:01:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:01:12,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:12,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768472714] [2024-01-31 16:01:12,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768472714] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:12,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:12,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:12,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131754107] [2024-01-31 16:01:12,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:12,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:12,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:12,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-01-31 16:01:12,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 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) [2024-01-31 16:01:12,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:12,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-01-31 16:01:12,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:12,942 INFO L124 PetriNetUnfolderBase]: 928/2173 cut-off events. [2024-01-31 16:01:12,942 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-01-31 16:01:12,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3870 conditions, 2173 events. 928/2173 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17148 event pairs, 329 based on Foata normal form. 78/1784 useless extension candidates. Maximal degree in co-relation 2291. Up to 1085 conditions per place. [2024-01-31 16:01:12,958 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 56 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-01-31 16:01:12,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 330 flow [2024-01-31 16:01:12,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-01-31 16:01:12,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6772151898734177 [2024-01-31 16:01:12,961 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 154 flow. Second operand 4 states and 214 transitions. [2024-01-31 16:01:12,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 330 flow [2024-01-31 16:01:12,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:12,963 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 148 flow [2024-01-31 16:01:12,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-01-31 16:01:12,964 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2024-01-31 16:01:12,965 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 148 flow [2024-01-31 16:01:12,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 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) [2024-01-31 16:01:12,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:12,965 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-31 16:01:12,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:01:12,966 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-31 16:01:12,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1117982397, now seen corresponding path program 1 times [2024-01-31 16:01:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:12,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058649869] [2024-01-31 16:01:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:12,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:01:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:12,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:01:12,988 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:01:12,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2024-01-31 16:01:12,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 46 remaining) [2024-01-31 16:01:12,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 46 remaining) [2024-01-31 16:01:12,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 46 remaining) [2024-01-31 16:01:12,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 46 remaining) [2024-01-31 16:01:12,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 46 remaining) [2024-01-31 16:01:12,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 46 remaining) [2024-01-31 16:01:12,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 46 remaining) [2024-01-31 16:01:12,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 46 remaining) [2024-01-31 16:01:12,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 46 remaining) [2024-01-31 16:01:12,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 46 remaining) [2024-01-31 16:01:12,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 46 remaining) [2024-01-31 16:01:12,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 46 remaining) [2024-01-31 16:01:12,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (32 of 46 remaining) [2024-01-31 16:01:12,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 46 remaining) [2024-01-31 16:01:12,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 46 remaining) [2024-01-31 16:01:12,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 46 remaining) [2024-01-31 16:01:12,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 46 remaining) [2024-01-31 16:01:12,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 46 remaining) [2024-01-31 16:01:12,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 46 remaining) [2024-01-31 16:01:12,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 46 remaining) [2024-01-31 16:01:12,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 46 remaining) [2024-01-31 16:01:12,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 46 remaining) [2024-01-31 16:01:12,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 46 remaining) [2024-01-31 16:01:12,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 46 remaining) [2024-01-31 16:01:12,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 46 remaining) [2024-01-31 16:01:12,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 46 remaining) [2024-01-31 16:01:12,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 46 remaining) [2024-01-31 16:01:12,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (17 of 46 remaining) [2024-01-31 16:01:12,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 46 remaining) [2024-01-31 16:01:12,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 46 remaining) [2024-01-31 16:01:12,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 46 remaining) [2024-01-31 16:01:12,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 46 remaining) [2024-01-31 16:01:12,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 46 remaining) [2024-01-31 16:01:12,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 46 remaining) [2024-01-31 16:01:12,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 46 remaining) [2024-01-31 16:01:12,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 46 remaining) [2024-01-31 16:01:12,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 46 remaining) [2024-01-31 16:01:12,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 46 remaining) [2024-01-31 16:01:12,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 46 remaining) [2024-01-31 16:01:12,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 46 remaining) [2024-01-31 16:01:12,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 46 remaining) [2024-01-31 16:01:12,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 46 remaining) [2024-01-31 16:01:12,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (2 of 46 remaining) [2024-01-31 16:01:12,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 46 remaining) [2024-01-31 16:01:12,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 46 remaining) [2024-01-31 16:01:12,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:01:12,998 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-01-31 16:01:12,999 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:01:12,999 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 16:01:13,059 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:13,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 116 transitions, 250 flow [2024-01-31 16:01:13,076 INFO L124 PetriNetUnfolderBase]: 3/124 cut-off events. [2024-01-31 16:01:13,076 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:01:13,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 124 events. 3/124 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 495 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2024-01-31 16:01:13,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 116 transitions, 250 flow [2024-01-31 16:01:13,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 116 transitions, 250 flow [2024-01-31 16:01:13,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:13,085 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;@5dbac8a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:13,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-01-31 16:01:13,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:13,086 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-01-31 16:01:13,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:13,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:13,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:13,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:13,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:13,087 INFO L85 PathProgramCache]: Analyzing trace with hash 401878238, now seen corresponding path program 1 times [2024-01-31 16:01:13,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:13,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669881582] [2024-01-31 16:01:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:13,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:13,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:13,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669881582] [2024-01-31 16:01:13,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669881582] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:13,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:13,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:13,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809492821] [2024-01-31 16:01:13,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:13,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:13,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:13,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:13,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:13,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2024-01-31 16:01:13,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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) [2024-01-31 16:01:13,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:13,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2024-01-31 16:01:13,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:16,760 INFO L124 PetriNetUnfolderBase]: 17935/34289 cut-off events. [2024-01-31 16:01:16,761 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2024-01-31 16:01:16,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60063 conditions, 34289 events. 17935/34289 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 341757 event pairs, 13570 based on Foata normal form. 942/26859 useless extension candidates. Maximal degree in co-relation 41884. Up to 18208 conditions per place. [2024-01-31 16:01:17,081 INFO L140 encePairwiseOnDemand]: 100/116 looper letters, 70 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-01-31 16:01:17,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 132 transitions, 440 flow [2024-01-31 16:01:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2024-01-31 16:01:17,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7112068965517241 [2024-01-31 16:01:17,084 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 250 flow. Second operand 4 states and 330 transitions. [2024-01-31 16:01:17,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 132 transitions, 440 flow [2024-01-31 16:01:17,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 132 transitions, 436 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:17,090 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 228 flow [2024-01-31 16:01:17,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2024-01-31 16:01:17,091 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -10 predicate places. [2024-01-31 16:01:17,091 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 228 flow [2024-01-31 16:01:17,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 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) [2024-01-31 16:01:17,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:17,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:17,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:01:17,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:17,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:17,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2050220757, now seen corresponding path program 1 times [2024-01-31 16:01:17,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:17,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834482971] [2024-01-31 16:01:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:17,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:01:17,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:17,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834482971] [2024-01-31 16:01:17,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834482971] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:17,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:17,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:17,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396553114] [2024-01-31 16:01:17,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:17,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:17,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:17,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:17,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:17,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2024-01-31 16:01:17,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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) [2024-01-31 16:01:17,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:17,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2024-01-31 16:01:17,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:20,518 INFO L124 PetriNetUnfolderBase]: 18835/39645 cut-off events. [2024-01-31 16:01:20,518 INFO L125 PetriNetUnfolderBase]: For 1893/1893 co-relation queries the response was YES. [2024-01-31 16:01:20,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67935 conditions, 39645 events. 18835/39645 cut-off events. For 1893/1893 co-relation queries the response was YES. Maximal size of possible extension queue 1669. Compared 440983 event pairs, 8110 based on Foata normal form. 1014/31222 useless extension candidates. Maximal degree in co-relation 40619. Up to 19240 conditions per place. [2024-01-31 16:01:20,950 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 82 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2024-01-31 16:01:20,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 141 transitions, 487 flow [2024-01-31 16:01:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:20,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2024-01-31 16:01:20,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6982758620689655 [2024-01-31 16:01:20,952 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 228 flow. Second operand 4 states and 324 transitions. [2024-01-31 16:01:20,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 141 transitions, 487 flow [2024-01-31 16:01:20,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 141 transitions, 473 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:20,959 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 222 flow [2024-01-31 16:01:20,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2024-01-31 16:01:20,962 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -13 predicate places. [2024-01-31 16:01:20,963 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 222 flow [2024-01-31 16:01:20,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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) [2024-01-31 16:01:20,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:20,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:20,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:01:20,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:20,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1800903261, now seen corresponding path program 1 times [2024-01-31 16:01:20,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:20,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767880557] [2024-01-31 16:01:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:21,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:21,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767880557] [2024-01-31 16:01:21,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767880557] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:21,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:21,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:21,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825773688] [2024-01-31 16:01:21,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:21,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:21,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:21,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:21,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 116 [2024-01-31 16:01:21,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 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) [2024-01-31 16:01:21,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:21,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 116 [2024-01-31 16:01:21,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:27,332 INFO L124 PetriNetUnfolderBase]: 53069/89851 cut-off events. [2024-01-31 16:01:27,332 INFO L125 PetriNetUnfolderBase]: For 3981/3981 co-relation queries the response was YES. [2024-01-31 16:01:27,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168859 conditions, 89851 events. 53069/89851 cut-off events. For 3981/3981 co-relation queries the response was YES. Maximal size of possible extension queue 3176. Compared 869377 event pairs, 31816 based on Foata normal form. 1212/73897 useless extension candidates. Maximal degree in co-relation 89612. Up to 45634 conditions per place. [2024-01-31 16:01:27,988 INFO L140 encePairwiseOnDemand]: 96/116 looper letters, 119 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2024-01-31 16:01:27,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 636 flow [2024-01-31 16:01:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-01-31 16:01:27,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2024-01-31 16:01:27,992 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 222 flow. Second operand 4 states and 304 transitions. [2024-01-31 16:01:27,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 636 flow [2024-01-31 16:01:27,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 165 transitions, 620 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:27,999 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 290 flow [2024-01-31 16:01:27,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2024-01-31 16:01:28,000 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -12 predicate places. [2024-01-31 16:01:28,001 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 290 flow [2024-01-31 16:01:28,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 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) [2024-01-31 16:01:28,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:28,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:28,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:01:28,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:28,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1800903294, now seen corresponding path program 1 times [2024-01-31 16:01:28,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:28,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862961000] [2024-01-31 16:01:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:28,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:28,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862961000] [2024-01-31 16:01:28,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862961000] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:28,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:28,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:28,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889670092] [2024-01-31 16:01:28,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:28,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:28,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:28,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 116 [2024-01-31 16:01:28,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 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) [2024-01-31 16:01:28,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:28,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 116 [2024-01-31 16:01:28,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:35,005 INFO L124 PetriNetUnfolderBase]: 53768/90292 cut-off events. [2024-01-31 16:01:35,006 INFO L125 PetriNetUnfolderBase]: For 18806/19621 co-relation queries the response was YES. [2024-01-31 16:01:35,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191157 conditions, 90292 events. 53768/90292 cut-off events. For 18806/19621 co-relation queries the response was YES. Maximal size of possible extension queue 3192. Compared 861915 event pairs, 31024 based on Foata normal form. 1653/81733 useless extension candidates. Maximal degree in co-relation 93309. Up to 44095 conditions per place. [2024-01-31 16:01:35,662 INFO L140 encePairwiseOnDemand]: 97/116 looper letters, 125 selfloop transitions, 14 changer transitions 0/177 dead transitions. [2024-01-31 16:01:35,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 177 transitions, 785 flow [2024-01-31 16:01:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:35,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-01-31 16:01:35,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530172413793104 [2024-01-31 16:01:35,665 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 290 flow. Second operand 4 states and 303 transitions. [2024-01-31 16:01:35,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 177 transitions, 785 flow [2024-01-31 16:01:35,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 177 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:01:35,675 INFO L231 Difference]: Finished difference. Result has 112 places, 117 transitions, 423 flow [2024-01-31 16:01:35,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=423, PETRI_PLACES=112, PETRI_TRANSITIONS=117} [2024-01-31 16:01:35,677 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -8 predicate places. [2024-01-31 16:01:35,677 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 117 transitions, 423 flow [2024-01-31 16:01:35,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 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) [2024-01-31 16:01:35,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:35,678 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:35,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:01:35,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:35,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash 533036287, now seen corresponding path program 1 times [2024-01-31 16:01:35,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:35,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176017350] [2024-01-31 16:01:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:35,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:01:35,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:35,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176017350] [2024-01-31 16:01:35,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176017350] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:35,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:35,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:35,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439909403] [2024-01-31 16:01:35,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:35,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:35,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:35,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:35,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:35,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2024-01-31 16:01:35,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 117 transitions, 423 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 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) [2024-01-31 16:01:35,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:35,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2024-01-31 16:01:35,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:40,325 INFO L124 PetriNetUnfolderBase]: 30068/56489 cut-off events. [2024-01-31 16:01:40,325 INFO L125 PetriNetUnfolderBase]: For 29081/32793 co-relation queries the response was YES. [2024-01-31 16:01:40,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121906 conditions, 56489 events. 30068/56489 cut-off events. For 29081/32793 co-relation queries the response was YES. Maximal size of possible extension queue 2389. Compared 596828 event pairs, 8225 based on Foata normal form. 1859/50342 useless extension candidates. Maximal degree in co-relation 99203. Up to 28885 conditions per place. [2024-01-31 16:01:40,991 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 107 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2024-01-31 16:01:40,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 174 transitions, 839 flow [2024-01-31 16:01:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2024-01-31 16:01:40,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7219827586206896 [2024-01-31 16:01:40,998 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 423 flow. Second operand 4 states and 335 transitions. [2024-01-31 16:01:40,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 174 transitions, 839 flow [2024-01-31 16:01:41,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 174 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:01:41,094 INFO L231 Difference]: Finished difference. Result has 111 places, 114 transitions, 422 flow [2024-01-31 16:01:41,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=422, PETRI_PLACES=111, PETRI_TRANSITIONS=114} [2024-01-31 16:01:41,097 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -9 predicate places. [2024-01-31 16:01:41,097 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 422 flow [2024-01-31 16:01:41,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 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) [2024-01-31 16:01:41,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:41,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:41,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:01:41,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:41,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:41,098 INFO L85 PathProgramCache]: Analyzing trace with hash -6572252, now seen corresponding path program 1 times [2024-01-31 16:01:41,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:41,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787655447] [2024-01-31 16:01:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:41,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:41,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:41,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787655447] [2024-01-31 16:01:41,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787655447] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:41,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:41,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:41,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697310744] [2024-01-31 16:01:41,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:41,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:01:41,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:01:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:01:41,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 116 [2024-01-31 16:01:41,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 422 flow. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 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) [2024-01-31 16:01:41,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:41,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 116 [2024-01-31 16:01:41,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:47,297 INFO L124 PetriNetUnfolderBase]: 43417/73577 cut-off events. [2024-01-31 16:01:47,297 INFO L125 PetriNetUnfolderBase]: For 42177/47627 co-relation queries the response was YES. [2024-01-31 16:01:47,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166013 conditions, 73577 events. 43417/73577 cut-off events. For 42177/47627 co-relation queries the response was YES. Maximal size of possible extension queue 2672. Compared 679050 event pairs, 12923 based on Foata normal form. 1836/66249 useless extension candidates. Maximal degree in co-relation 159368. Up to 54274 conditions per place. [2024-01-31 16:01:47,856 INFO L140 encePairwiseOnDemand]: 102/116 looper letters, 130 selfloop transitions, 14 changer transitions 0/186 dead transitions. [2024-01-31 16:01:47,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 186 transitions, 1011 flow [2024-01-31 16:01:47,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:01:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:01:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 405 transitions. [2024-01-31 16:01:47,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5818965517241379 [2024-01-31 16:01:47,858 INFO L175 Difference]: Start difference. First operand has 111 places, 114 transitions, 422 flow. Second operand 6 states and 405 transitions. [2024-01-31 16:01:47,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 186 transitions, 1011 flow [2024-01-31 16:01:47,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 186 transitions, 977 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:47,875 INFO L231 Difference]: Finished difference. Result has 117 places, 127 transitions, 579 flow [2024-01-31 16:01:47,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=579, PETRI_PLACES=117, PETRI_TRANSITIONS=127} [2024-01-31 16:01:47,876 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2024-01-31 16:01:47,876 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 127 transitions, 579 flow [2024-01-31 16:01:47,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 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) [2024-01-31 16:01:47,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:47,877 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-01-31 16:01:47,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:01:47,878 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:47,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash -655746041, now seen corresponding path program 1 times [2024-01-31 16:01:47,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:47,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139260709] [2024-01-31 16:01:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:47,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:47,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:01:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:47,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:01:47,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:01:47,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2024-01-31 16:01:47,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 61 remaining) [2024-01-31 16:01:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 61 remaining) [2024-01-31 16:01:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 61 remaining) [2024-01-31 16:01:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 61 remaining) [2024-01-31 16:01:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 61 remaining) [2024-01-31 16:01:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 61 remaining) [2024-01-31 16:01:47,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 61 remaining) [2024-01-31 16:01:47,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 61 remaining) [2024-01-31 16:01:47,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 61 remaining) [2024-01-31 16:01:47,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 61 remaining) [2024-01-31 16:01:47,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 61 remaining) [2024-01-31 16:01:47,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 61 remaining) [2024-01-31 16:01:47,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (47 of 61 remaining) [2024-01-31 16:01:47,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 61 remaining) [2024-01-31 16:01:47,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 61 remaining) [2024-01-31 16:01:47,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 61 remaining) [2024-01-31 16:01:47,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 61 remaining) [2024-01-31 16:01:47,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 61 remaining) [2024-01-31 16:01:47,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 61 remaining) [2024-01-31 16:01:47,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 61 remaining) [2024-01-31 16:01:47,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 61 remaining) [2024-01-31 16:01:47,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 61 remaining) [2024-01-31 16:01:47,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 61 remaining) [2024-01-31 16:01:47,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 61 remaining) [2024-01-31 16:01:47,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 61 remaining) [2024-01-31 16:01:47,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 61 remaining) [2024-01-31 16:01:47,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 61 remaining) [2024-01-31 16:01:47,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (32 of 61 remaining) [2024-01-31 16:01:47,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 61 remaining) [2024-01-31 16:01:47,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 61 remaining) [2024-01-31 16:01:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 61 remaining) [2024-01-31 16:01:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 61 remaining) [2024-01-31 16:01:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 61 remaining) [2024-01-31 16:01:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 61 remaining) [2024-01-31 16:01:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 61 remaining) [2024-01-31 16:01:47,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 61 remaining) [2024-01-31 16:01:47,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 61 remaining) [2024-01-31 16:01:47,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 61 remaining) [2024-01-31 16:01:47,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 61 remaining) [2024-01-31 16:01:47,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 61 remaining) [2024-01-31 16:01:47,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 61 remaining) [2024-01-31 16:01:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 61 remaining) [2024-01-31 16:01:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (17 of 61 remaining) [2024-01-31 16:01:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 61 remaining) [2024-01-31 16:01:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 61 remaining) [2024-01-31 16:01:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 61 remaining) [2024-01-31 16:01:47,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 61 remaining) [2024-01-31 16:01:47,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 61 remaining) [2024-01-31 16:01:47,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 61 remaining) [2024-01-31 16:01:47,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 61 remaining) [2024-01-31 16:01:47,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 61 remaining) [2024-01-31 16:01:47,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 61 remaining) [2024-01-31 16:01:47,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 61 remaining) [2024-01-31 16:01:47,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 61 remaining) [2024-01-31 16:01:47,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 61 remaining) [2024-01-31 16:01:47,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 61 remaining) [2024-01-31 16:01:47,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 61 remaining) [2024-01-31 16:01:47,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (2 of 61 remaining) [2024-01-31 16:01:47,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 61 remaining) [2024-01-31 16:01:47,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 61 remaining) [2024-01-31 16:01:47,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:01:47,912 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:47,913 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:01:47,913 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-31 16:01:47,988 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:47,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 153 transitions, 334 flow [2024-01-31 16:01:48,015 INFO L124 PetriNetUnfolderBase]: 4/164 cut-off events. [2024-01-31 16:01:48,016 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-31 16:01:48,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 164 events. 4/164 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 743 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 147. Up to 5 conditions per place. [2024-01-31 16:01:48,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 153 transitions, 334 flow [2024-01-31 16:01:48,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 153 transitions, 334 flow [2024-01-31 16:01:48,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:48,024 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;@5dbac8a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:48,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2024-01-31 16:01:48,030 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:48,030 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-31 16:01:48,030 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 16:01:48,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:48,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:48,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 73 more)] === [2024-01-31 16:01:48,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:48,031 INFO L85 PathProgramCache]: Analyzing trace with hash 547922651, now seen corresponding path program 1 times [2024-01-31 16:01:48,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:48,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741138886] [2024-01-31 16:01:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741138886] [2024-01-31 16:01:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741138886] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:48,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:48,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973752642] [2024-01-31 16:01:48,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:48,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:48,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 153 [2024-01-31 16:01:48,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2024-01-31 16:01:48,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:48,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 153 [2024-01-31 16:01:48,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand