./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 13967880 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-1396788-m [2024-02-02 16:07:12,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 16:07:12,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 16:07:12,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 16:07:12,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 16:07:12,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 16:07:12,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 16:07:12,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 16:07:12,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 16:07:12,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 16:07:12,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 16:07:12,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 16:07:12,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 16:07:12,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 16:07:12,756 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 16:07:12,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 16:07:12,756 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 16:07:12,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 16:07:12,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 16:07:12,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 16:07:12,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 16:07:12,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 16:07:12,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 16:07:12,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 16:07:12,759 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 16:07:12,760 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 16:07:12,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 16:07:12,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 16:07:12,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 16:07:12,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 16:07:12,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 16:07:12,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 16:07:12,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 16:07:12,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 16:07:12,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 16:07:12,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 16:07:12,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 16:07:12,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 16:07:12,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 16:07:12,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 16:07:12,764 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 16:07:12,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 16:07:12,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 16:07:12,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 16:07:13,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 16:07:13,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 16:07:13,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 16:07:13,063 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 16:07:13,063 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 16:07:13,064 INFO L431 ainManager$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 [2024-02-02 16:07:13,241 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 16:07:13,241 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 16:07:13,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2024-02-02 16:07:14,411 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 16:07:14,729 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 16:07:14,729 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2024-02-02 16:07:14,743 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5382259/5222f41db6bc4eb9b72de966930e2270/FLAG65eecaeb4 [2024-02-02 16:07:14,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5382259/5222f41db6bc4eb9b72de966930e2270 [2024-02-02 16:07:14,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 16:07:14,763 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 16:07:14,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 16:07:14,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 16:07:14,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 16:07:14,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:07:13" (1/2) ... [2024-02-02 16:07:14,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597533c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:14, skipping insertion in model container [2024-02-02 16:07:14,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:07:13" (1/2) ... [2024-02-02 16:07:14,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@748893cc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:14, skipping insertion in model container [2024-02-02 16:07:14,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 04:07:14" (2/2) ... [2024-02-02 16:07:14,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597533c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:14, skipping insertion in model container [2024-02-02 16:07:14,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 04:07:14" (2/2) ... [2024-02-02 16:07:14,776 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 16:07:14,871 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 16:07:14,872 INFO L101 nessWitnessExtractor]: Location invariant before [L700-L700] (((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-02-02 16:07:14,872 INFO L101 nessWitnessExtractor]: Location invariant after [L697-L697] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-02-02 16:07:14,873 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] ((((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U) [2024-02-02 16:07:14,873 INFO L101 nessWitnessExtractor]: Location invariant before [L699-L699] ((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-02-02 16:07:14,873 INFO L101 nessWitnessExtractor]: Location invariant before [L702-L702] ((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-02-02 16:07:14,873 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:14,873 INFO L101 nessWitnessExtractor]: Location invariant after [L690-L690] (unsigned long )arg == 0UL [2024-02-02 16:07:14,873 INFO L101 nessWitnessExtractor]: Location invariant before [L700-L700] ((v <= 4294967294U) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-02-02 16:07:14,874 INFO L101 nessWitnessExtractor]: Location invariant before [L696-L696] (((((unsigned int )value <= 4294967294U) && (0U == v)) && (v == 0U)) && ((unsigned long )arg == 0UL)) && ((unsigned int )value != 4294967295U) [2024-02-02 16:07:14,874 INFO L101 nessWitnessExtractor]: Location invariant after [L700-L700] (((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U) [2024-02-02 16:07:14,874 INFO L101 nessWitnessExtractor]: Location invariant before [L698-L698] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-02-02 16:07:14,874 INFO L101 nessWitnessExtractor]: Location invariant before [L692-L692] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:14,874 INFO L101 nessWitnessExtractor]: Location invariant before [L694-L694] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:14,874 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (unsigned long )arg == 0UL [2024-02-02 16:07:14,874 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-02-02 16:07:14,875 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L693] (((0U == v) && (v == 0U)) && ((unsigned int )value == 4294967295U)) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:14,875 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] ((((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U) [2024-02-02 16:07:14,875 INFO L101 nessWitnessExtractor]: Location invariant after [L697-L697] ((((v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 4294967295U) [2024-02-02 16:07:14,875 INFO L101 nessWitnessExtractor]: Location invariant before [L701-L701] ((((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && (v != 4294967295U)) && ((unsigned int )value != 0U) [2024-02-02 16:07:14,924 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-02 16:07:15,242 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] [2024-02-02 16:07:15,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 16:07:15,271 INFO L204 MainTranslator]: Completed pre-run [2024-02-02 16:07:15,316 WARN L424 MainDispatcher]: Unable to annotate unsigned with a witness entry [2024-02-02 16:07:15,317 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 [2024-02-02 16:07:15,375 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 [2024-02-02 16:07:15,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 16:07:15,416 INFO L208 MainTranslator]: Completed translation [2024-02-02 16:07:15,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15 WrapperNode [2024-02-02 16:07:15,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 16:07:15,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 16:07:15,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 16:07:15,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 16:07:15,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,460 INFO L138 Inliner]: procedures = 164, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-02-02 16:07:15,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 16:07:15,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 16:07:15,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 16:07:15,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 16:07:15,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,489 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]. [2024-02-02 16:07:15,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 16:07:15,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 16:07:15,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 16:07:15,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 16:07:15,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (1/1) ... [2024-02-02 16:07:15,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 16:07:15,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 16:07:15,554 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) [2024-02-02 16:07:15,562 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 [2024-02-02 16:07:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-02 16:07:15,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-02 16:07:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 16:07:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 16:07:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 16:07:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 16:07:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 16:07:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 16:07:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 16:07:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 16:07:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 16:07:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 16:07:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 16:07:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 16:07:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 16:07:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 16:07:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 16:07:15,598 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 16:07:15,747 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 16:07:15,749 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 16:07:16,042 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 16:07:16,043 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 16:07:16,167 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 16:07:16,168 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-02 16:07:16,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 04:07:16 BoogieIcfgContainer [2024-02-02 16:07:16,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 16:07:16,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 16:07:16,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 16:07:16,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 16:07:16,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:07:13" (1/4) ... [2024-02-02 16:07:16,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a914007 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 04:07:16, skipping insertion in model container [2024-02-02 16:07:16,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 04:07:14" (2/4) ... [2024-02-02 16:07:16,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a914007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 04:07:16, skipping insertion in model container [2024-02-02 16:07:16,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:15" (3/4) ... [2024-02-02 16:07:16,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a914007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 04:07:16, skipping insertion in model container [2024-02-02 16:07:16,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 04:07:16" (4/4) ... [2024-02-02 16:07:16,177 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2024-02-02 16:07:16,192 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 16:07:16,192 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-02-02 16:07:16,193 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 16:07:16,262 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 16:07:16,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 88 flow [2024-02-02 16:07:16,319 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-02-02 16:07:16,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:07:16,322 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. [2024-02-02 16:07:16,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 88 flow [2024-02-02 16:07:16,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 42 transitions, 88 flow [2024-02-02 16:07:16,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 16:07:16,339 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;@36765a0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 16:07:16,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-02-02 16:07:16,343 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 16:07:16,343 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-02-02 16:07:16,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:07:16,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:16,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 16:07:16,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-02-02 16:07:16,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash 215718419, now seen corresponding path program 1 times [2024-02-02 16:07:16,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:16,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169441813] [2024-02-02 16:07:16,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:16,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:16,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:16,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169441813] [2024-02-02 16:07:16,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169441813] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:16,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:16,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:16,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126626846] [2024-02-02 16:07:16,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:16,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:16,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:16,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 42 [2024-02-02 16:07:16,959 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) [2024-02-02 16:07:16,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:16,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 42 [2024-02-02 16:07:16,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:17,075 INFO L124 PetriNetUnfolderBase]: 28/129 cut-off events. [2024-02-02 16:07:17,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:07:17,076 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. [2024-02-02 16:07:17,078 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 18 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-02-02 16:07:17,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 122 flow [2024-02-02 16:07:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:17,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-02-02 16:07:17,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-02-02 16:07:17,091 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 88 flow. Second operand 4 states and 98 transitions. [2024-02-02 16:07:17,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 122 flow [2024-02-02 16:07:17,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 122 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 16:07:17,097 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 80 flow [2024-02-02 16:07:17,099 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} [2024-02-02 16:07:17,103 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2024-02-02 16:07:17,104 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 80 flow [2024-02-02 16:07:17,105 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) [2024-02-02 16:07:17,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:17,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-02 16:07:17,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 16:07:17,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-02-02 16:07:17,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1902665624, now seen corresponding path program 1 times [2024-02-02 16:07:17,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:17,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984031033] [2024-02-02 16:07:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:17,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 16:07:17,123 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 16:07:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 16:07:17,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 16:07:17,157 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 16:07:17,159 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-02-02 16:07:17,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 31 remaining) [2024-02-02 16:07:17,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 31 remaining) [2024-02-02 16:07:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 31 remaining) [2024-02-02 16:07:17,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 31 remaining) [2024-02-02 16:07:17,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 31 remaining) [2024-02-02 16:07:17,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 31 remaining) [2024-02-02 16:07:17,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 31 remaining) [2024-02-02 16:07:17,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 31 remaining) [2024-02-02 16:07:17,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 31 remaining) [2024-02-02 16:07:17,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 31 remaining) [2024-02-02 16:07:17,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 31 remaining) [2024-02-02 16:07:17,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 31 remaining) [2024-02-02 16:07:17,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (17 of 31 remaining) [2024-02-02 16:07:17,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 31 remaining) [2024-02-02 16:07:17,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 31 remaining) [2024-02-02 16:07:17,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 31 remaining) [2024-02-02 16:07:17,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 31 remaining) [2024-02-02 16:07:17,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 31 remaining) [2024-02-02 16:07:17,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 31 remaining) [2024-02-02 16:07:17,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 31 remaining) [2024-02-02 16:07:17,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 31 remaining) [2024-02-02 16:07:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 31 remaining) [2024-02-02 16:07:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 31 remaining) [2024-02-02 16:07:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 31 remaining) [2024-02-02 16:07:17,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 31 remaining) [2024-02-02 16:07:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 31 remaining) [2024-02-02 16:07:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 31 remaining) [2024-02-02 16:07:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (2 of 31 remaining) [2024-02-02 16:07:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 31 remaining) [2024-02-02 16:07:17,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 31 remaining) [2024-02-02 16:07:17,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 16:07:17,182 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-02 16:07:17,185 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 16:07:17,186 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-02 16:07:17,231 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 16:07:17,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 79 transitions, 168 flow [2024-02-02 16:07:17,255 INFO L124 PetriNetUnfolderBase]: 2/84 cut-off events. [2024-02-02 16:07:17,255 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 16:07:17,256 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. [2024-02-02 16:07:17,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 79 transitions, 168 flow [2024-02-02 16:07:17,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 168 flow [2024-02-02 16:07:17,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 16:07:17,260 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;@36765a0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 16:07:17,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-02-02 16:07:17,262 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 16:07:17,262 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-02-02 16:07:17,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:07:17,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:17,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 16:07:17,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-02 16:07:17,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash 291144262, now seen corresponding path program 1 times [2024-02-02 16:07:17,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:17,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957189037] [2024-02-02 16:07:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:17,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:17,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:17,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957189037] [2024-02-02 16:07:17,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957189037] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:17,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:17,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:17,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488113581] [2024-02-02 16:07:17,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:17,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:17,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:17,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-02-02 16:07:17,561 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) [2024-02-02 16:07:17,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:17,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-02-02 16:07:17,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:18,004 INFO L124 PetriNetUnfolderBase]: 907/2259 cut-off events. [2024-02-02 16:07:18,004 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-02-02 16:07:18,009 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. [2024-02-02 16:07:18,020 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 44 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-02-02 16:07:18,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 279 flow [2024-02-02 16:07:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-02-02 16:07:18,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6772151898734177 [2024-02-02 16:07:18,023 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 168 flow. Second operand 4 states and 214 transitions. [2024-02-02 16:07:18,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 279 flow [2024-02-02 16:07:18,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 85 transitions, 279 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 16:07:18,025 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 154 flow [2024-02-02 16:07:18,026 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} [2024-02-02 16:07:18,026 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2024-02-02 16:07:18,027 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 154 flow [2024-02-02 16:07:18,027 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) [2024-02-02 16:07:18,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:18,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:18,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 16:07:18,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-02 16:07:18,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:18,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1903598763, now seen corresponding path program 1 times [2024-02-02 16:07:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:18,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299150774] [2024-02-02 16:07:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:18,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 16:07:18,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:18,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299150774] [2024-02-02 16:07:18,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299150774] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:18,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:18,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:18,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864687718] [2024-02-02 16:07:18,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:18,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:18,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:18,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:18,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:18,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-02-02 16:07:18,205 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) [2024-02-02 16:07:18,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:18,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-02-02 16:07:18,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:18,510 INFO L124 PetriNetUnfolderBase]: 928/2173 cut-off events. [2024-02-02 16:07:18,511 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-02-02 16:07:18,515 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. [2024-02-02 16:07:18,525 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 56 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-02-02 16:07:18,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 330 flow [2024-02-02 16:07:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-02-02 16:07:18,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6772151898734177 [2024-02-02 16:07:18,530 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 154 flow. Second operand 4 states and 214 transitions. [2024-02-02 16:07:18,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 330 flow [2024-02-02 16:07:18,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 16:07:18,534 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 148 flow [2024-02-02 16:07:18,534 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} [2024-02-02 16:07:18,537 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2024-02-02 16:07:18,537 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 148 flow [2024-02-02 16:07:18,538 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) [2024-02-02 16:07:18,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:18,541 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-02-02 16:07:18,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 16:07:18,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-02-02 16:07:18,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1117982397, now seen corresponding path program 1 times [2024-02-02 16:07:18,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:18,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050654486] [2024-02-02 16:07:18,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:18,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 16:07:18,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 16:07:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 16:07:18,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 16:07:18,576 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 16:07:18,577 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2024-02-02 16:07:18,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 46 remaining) [2024-02-02 16:07:18,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 46 remaining) [2024-02-02 16:07:18,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 46 remaining) [2024-02-02 16:07:18,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 46 remaining) [2024-02-02 16:07:18,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 46 remaining) [2024-02-02 16:07:18,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 46 remaining) [2024-02-02 16:07:18,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 46 remaining) [2024-02-02 16:07:18,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 46 remaining) [2024-02-02 16:07:18,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 46 remaining) [2024-02-02 16:07:18,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 46 remaining) [2024-02-02 16:07:18,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 46 remaining) [2024-02-02 16:07:18,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 46 remaining) [2024-02-02 16:07:18,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (32 of 46 remaining) [2024-02-02 16:07:18,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 46 remaining) [2024-02-02 16:07:18,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 46 remaining) [2024-02-02 16:07:18,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 46 remaining) [2024-02-02 16:07:18,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 46 remaining) [2024-02-02 16:07:18,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 46 remaining) [2024-02-02 16:07:18,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 46 remaining) [2024-02-02 16:07:18,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 46 remaining) [2024-02-02 16:07:18,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 46 remaining) [2024-02-02 16:07:18,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 46 remaining) [2024-02-02 16:07:18,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 46 remaining) [2024-02-02 16:07:18,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 46 remaining) [2024-02-02 16:07:18,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 46 remaining) [2024-02-02 16:07:18,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 46 remaining) [2024-02-02 16:07:18,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 46 remaining) [2024-02-02 16:07:18,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (17 of 46 remaining) [2024-02-02 16:07:18,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 46 remaining) [2024-02-02 16:07:18,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 46 remaining) [2024-02-02 16:07:18,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 46 remaining) [2024-02-02 16:07:18,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 46 remaining) [2024-02-02 16:07:18,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 46 remaining) [2024-02-02 16:07:18,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 46 remaining) [2024-02-02 16:07:18,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 46 remaining) [2024-02-02 16:07:18,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 46 remaining) [2024-02-02 16:07:18,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 46 remaining) [2024-02-02 16:07:18,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 46 remaining) [2024-02-02 16:07:18,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 46 remaining) [2024-02-02 16:07:18,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 46 remaining) [2024-02-02 16:07:18,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 46 remaining) [2024-02-02 16:07:18,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 46 remaining) [2024-02-02 16:07:18,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (2 of 46 remaining) [2024-02-02 16:07:18,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 46 remaining) [2024-02-02 16:07:18,588 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 46 remaining) [2024-02-02 16:07:18,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 16:07:18,589 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-02-02 16:07:18,589 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 16:07:18,589 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-02 16:07:18,648 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 16:07:18,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 116 transitions, 250 flow [2024-02-02 16:07:18,665 INFO L124 PetriNetUnfolderBase]: 3/124 cut-off events. [2024-02-02 16:07:18,665 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-02 16:07:18,666 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. [2024-02-02 16:07:18,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 116 transitions, 250 flow [2024-02-02 16:07:18,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 116 transitions, 250 flow [2024-02-02 16:07:18,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 16:07:18,673 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;@36765a0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 16:07:18,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-02-02 16:07:18,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 16:07:18,675 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-02-02 16:07:18,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:07:18,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:18,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 16:07:18,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 16:07:18,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash 401878238, now seen corresponding path program 1 times [2024-02-02 16:07:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:18,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724019346] [2024-02-02 16:07:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:18,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724019346] [2024-02-02 16:07:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724019346] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:18,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157084967] [2024-02-02 16:07:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:18,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2024-02-02 16:07:18,847 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) [2024-02-02 16:07:18,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:18,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2024-02-02 16:07:18,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:22,559 INFO L124 PetriNetUnfolderBase]: 17935/34289 cut-off events. [2024-02-02 16:07:22,559 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2024-02-02 16:07:22,659 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. [2024-02-02 16:07:23,015 INFO L140 encePairwiseOnDemand]: 100/116 looper letters, 70 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-02-02 16:07:23,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 132 transitions, 440 flow [2024-02-02 16:07:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2024-02-02 16:07:23,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7112068965517241 [2024-02-02 16:07:23,017 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 250 flow. Second operand 4 states and 330 transitions. [2024-02-02 16:07:23,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 132 transitions, 440 flow [2024-02-02 16:07:23,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 132 transitions, 436 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-02 16:07:23,022 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 228 flow [2024-02-02 16:07:23,023 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} [2024-02-02 16:07:23,025 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -10 predicate places. [2024-02-02 16:07:23,025 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 228 flow [2024-02-02 16:07:23,025 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) [2024-02-02 16:07:23,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:23,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:23,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 16:07:23,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 16:07:23,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:23,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2050220757, now seen corresponding path program 1 times [2024-02-02 16:07:23,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:23,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513115301] [2024-02-02 16:07:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-02 16:07:23,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:23,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513115301] [2024-02-02 16:07:23,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513115301] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:23,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:23,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:23,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057391073] [2024-02-02 16:07:23,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:23,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:23,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:23,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:23,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2024-02-02 16:07:23,172 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) [2024-02-02 16:07:23,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:23,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2024-02-02 16:07:23,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:26,521 INFO L124 PetriNetUnfolderBase]: 18835/39645 cut-off events. [2024-02-02 16:07:26,521 INFO L125 PetriNetUnfolderBase]: For 1893/1893 co-relation queries the response was YES. [2024-02-02 16:07:26,598 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. [2024-02-02 16:07:26,772 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 82 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2024-02-02 16:07:26,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 141 transitions, 487 flow [2024-02-02 16:07:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2024-02-02 16:07:26,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6982758620689655 [2024-02-02 16:07:26,775 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 228 flow. Second operand 4 states and 324 transitions. [2024-02-02 16:07:26,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 141 transitions, 487 flow [2024-02-02 16:07:26,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 141 transitions, 473 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 16:07:26,780 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 222 flow [2024-02-02 16:07:26,780 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} [2024-02-02 16:07:26,782 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -13 predicate places. [2024-02-02 16:07:26,782 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 222 flow [2024-02-02 16:07:26,783 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) [2024-02-02 16:07:26,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:26,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:26,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 16:07:26,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 16:07:26,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1800903261, now seen corresponding path program 1 times [2024-02-02 16:07:26,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:26,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042652569] [2024-02-02 16:07:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:26,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:26,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:26,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042652569] [2024-02-02 16:07:26,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042652569] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:26,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:26,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542152456] [2024-02-02 16:07:26,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:26,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:26,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:26,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:26,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:26,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 116 [2024-02-02 16:07:26,931 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) [2024-02-02 16:07:26,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:26,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 116 [2024-02-02 16:07:26,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:32,930 INFO L124 PetriNetUnfolderBase]: 53069/89851 cut-off events. [2024-02-02 16:07:32,930 INFO L125 PetriNetUnfolderBase]: For 3981/3981 co-relation queries the response was YES. [2024-02-02 16:07:33,112 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. [2024-02-02 16:07:33,557 INFO L140 encePairwiseOnDemand]: 96/116 looper letters, 119 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2024-02-02 16:07:33,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 636 flow [2024-02-02 16:07:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-02-02 16:07:33,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2024-02-02 16:07:33,560 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 222 flow. Second operand 4 states and 304 transitions. [2024-02-02 16:07:33,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 636 flow [2024-02-02 16:07:33,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 165 transitions, 620 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 16:07:33,571 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 290 flow [2024-02-02 16:07:33,572 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} [2024-02-02 16:07:33,573 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -12 predicate places. [2024-02-02 16:07:33,573 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 290 flow [2024-02-02 16:07:33,574 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) [2024-02-02 16:07:33,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:33,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:33,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 16:07:33,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 16:07:33,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1800903294, now seen corresponding path program 1 times [2024-02-02 16:07:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:33,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318698765] [2024-02-02 16:07:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:33,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318698765] [2024-02-02 16:07:33,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318698765] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:33,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:33,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264111246] [2024-02-02 16:07:33,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:33,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:33,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:33,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 116 [2024-02-02 16:07:33,757 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) [2024-02-02 16:07:33,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:33,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 116 [2024-02-02 16:07:33,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:40,101 INFO L124 PetriNetUnfolderBase]: 53768/90292 cut-off events. [2024-02-02 16:07:40,101 INFO L125 PetriNetUnfolderBase]: For 18806/19621 co-relation queries the response was YES. [2024-02-02 16:07:40,319 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. [2024-02-02 16:07:40,830 INFO L140 encePairwiseOnDemand]: 97/116 looper letters, 125 selfloop transitions, 14 changer transitions 0/177 dead transitions. [2024-02-02 16:07:40,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 177 transitions, 785 flow [2024-02-02 16:07:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-02-02 16:07:40,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530172413793104 [2024-02-02 16:07:40,832 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 290 flow. Second operand 4 states and 303 transitions. [2024-02-02 16:07:40,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 177 transitions, 785 flow [2024-02-02 16:07:40,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 177 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 16:07:40,839 INFO L231 Difference]: Finished difference. Result has 112 places, 117 transitions, 423 flow [2024-02-02 16:07:40,839 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} [2024-02-02 16:07:40,840 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -8 predicate places. [2024-02-02 16:07:40,841 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 117 transitions, 423 flow [2024-02-02 16:07:40,841 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) [2024-02-02 16:07:40,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:40,841 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:40,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 16:07:40,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 16:07:40,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 533036287, now seen corresponding path program 1 times [2024-02-02 16:07:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:40,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671094438] [2024-02-02 16:07:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:40,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-02-02 16:07:40,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:40,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671094438] [2024-02-02 16:07:40,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671094438] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:40,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:40,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:40,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204840307] [2024-02-02 16:07:40,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:40,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:40,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:40,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:40,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:40,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2024-02-02 16:07:40,992 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) [2024-02-02 16:07:40,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:40,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2024-02-02 16:07:40,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:45,238 INFO L124 PetriNetUnfolderBase]: 30068/56489 cut-off events. [2024-02-02 16:07:45,239 INFO L125 PetriNetUnfolderBase]: For 29081/32793 co-relation queries the response was YES. [2024-02-02 16:07:45,386 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. [2024-02-02 16:07:45,603 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 107 selfloop transitions, 4 changer transitions 0/174 dead transitions. [2024-02-02 16:07:45,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 174 transitions, 839 flow [2024-02-02 16:07:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2024-02-02 16:07:45,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7219827586206896 [2024-02-02 16:07:45,606 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 423 flow. Second operand 4 states and 335 transitions. [2024-02-02 16:07:45,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 174 transitions, 839 flow [2024-02-02 16:07:45,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 174 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 16:07:45,696 INFO L231 Difference]: Finished difference. Result has 111 places, 114 transitions, 422 flow [2024-02-02 16:07:45,696 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} [2024-02-02 16:07:45,698 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -9 predicate places. [2024-02-02 16:07:45,699 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 422 flow [2024-02-02 16:07:45,699 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) [2024-02-02 16:07:45,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:45,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:45,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 16:07:45,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 16:07:45,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash -6572252, now seen corresponding path program 1 times [2024-02-02 16:07:45,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:45,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674358766] [2024-02-02 16:07:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:45,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:45,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:45,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674358766] [2024-02-02 16:07:45,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674358766] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:45,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:45,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:45,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505313297] [2024-02-02 16:07:45,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:45,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 16:07:45,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:45,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 16:07:45,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 16:07:46,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 116 [2024-02-02 16:07:46,219 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) [2024-02-02 16:07:46,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:46,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 116 [2024-02-02 16:07:46,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:51,527 INFO L124 PetriNetUnfolderBase]: 43417/73577 cut-off events. [2024-02-02 16:07:51,527 INFO L125 PetriNetUnfolderBase]: For 42177/47627 co-relation queries the response was YES. [2024-02-02 16:07:51,705 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. [2024-02-02 16:07:51,956 INFO L140 encePairwiseOnDemand]: 102/116 looper letters, 130 selfloop transitions, 14 changer transitions 0/186 dead transitions. [2024-02-02 16:07:51,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 186 transitions, 1011 flow [2024-02-02 16:07:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:07:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:07:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 405 transitions. [2024-02-02 16:07:51,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5818965517241379 [2024-02-02 16:07:51,959 INFO L175 Difference]: Start difference. First operand has 111 places, 114 transitions, 422 flow. Second operand 6 states and 405 transitions. [2024-02-02 16:07:51,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 186 transitions, 1011 flow [2024-02-02 16:07:51,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 186 transitions, 977 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 16:07:51,973 INFO L231 Difference]: Finished difference. Result has 117 places, 127 transitions, 579 flow [2024-02-02 16:07:51,973 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} [2024-02-02 16:07:51,974 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2024-02-02 16:07:51,974 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 127 transitions, 579 flow [2024-02-02 16:07:51,974 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) [2024-02-02 16:07:51,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:51,974 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-02-02 16:07:51,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 16:07:51,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-02-02 16:07:51,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:51,975 INFO L85 PathProgramCache]: Analyzing trace with hash -655746041, now seen corresponding path program 1 times [2024-02-02 16:07:51,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:51,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482689536] [2024-02-02 16:07:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:51,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 16:07:51,987 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 16:07:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 16:07:51,996 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 16:07:51,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 16:07:51,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2024-02-02 16:07:51,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 61 remaining) [2024-02-02 16:07:51,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 61 remaining) [2024-02-02 16:07:51,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 61 remaining) [2024-02-02 16:07:51,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 61 remaining) [2024-02-02 16:07:51,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 61 remaining) [2024-02-02 16:07:51,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 61 remaining) [2024-02-02 16:07:51,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 61 remaining) [2024-02-02 16:07:51,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 61 remaining) [2024-02-02 16:07:51,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 61 remaining) [2024-02-02 16:07:51,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 61 remaining) [2024-02-02 16:07:51,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 61 remaining) [2024-02-02 16:07:51,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 61 remaining) [2024-02-02 16:07:51,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (47 of 61 remaining) [2024-02-02 16:07:51,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 61 remaining) [2024-02-02 16:07:51,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 61 remaining) [2024-02-02 16:07:52,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 61 remaining) [2024-02-02 16:07:52,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 61 remaining) [2024-02-02 16:07:52,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 61 remaining) [2024-02-02 16:07:52,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 61 remaining) [2024-02-02 16:07:52,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 61 remaining) [2024-02-02 16:07:52,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 61 remaining) [2024-02-02 16:07:52,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 61 remaining) [2024-02-02 16:07:52,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 61 remaining) [2024-02-02 16:07:52,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 61 remaining) [2024-02-02 16:07:52,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 61 remaining) [2024-02-02 16:07:52,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 61 remaining) [2024-02-02 16:07:52,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 61 remaining) [2024-02-02 16:07:52,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (32 of 61 remaining) [2024-02-02 16:07:52,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 61 remaining) [2024-02-02 16:07:52,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 61 remaining) [2024-02-02 16:07:52,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 61 remaining) [2024-02-02 16:07:52,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 61 remaining) [2024-02-02 16:07:52,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 61 remaining) [2024-02-02 16:07:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 61 remaining) [2024-02-02 16:07:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 61 remaining) [2024-02-02 16:07:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 61 remaining) [2024-02-02 16:07:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 61 remaining) [2024-02-02 16:07:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 61 remaining) [2024-02-02 16:07:52,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 61 remaining) [2024-02-02 16:07:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 61 remaining) [2024-02-02 16:07:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 61 remaining) [2024-02-02 16:07:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 61 remaining) [2024-02-02 16:07:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (17 of 61 remaining) [2024-02-02 16:07:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 61 remaining) [2024-02-02 16:07:52,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 61 remaining) [2024-02-02 16:07:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 61 remaining) [2024-02-02 16:07:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 61 remaining) [2024-02-02 16:07:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 61 remaining) [2024-02-02 16:07:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 61 remaining) [2024-02-02 16:07:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 61 remaining) [2024-02-02 16:07:52,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 61 remaining) [2024-02-02 16:07:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 61 remaining) [2024-02-02 16:07:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 61 remaining) [2024-02-02 16:07:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 61 remaining) [2024-02-02 16:07:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 61 remaining) [2024-02-02 16:07:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 61 remaining) [2024-02-02 16:07:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 61 remaining) [2024-02-02 16:07:52,006 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (2 of 61 remaining) [2024-02-02 16:07:52,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 61 remaining) [2024-02-02 16:07:52,007 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 61 remaining) [2024-02-02 16:07:52,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-02 16:07:52,007 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:52,008 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-02 16:07:52,008 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-02-02 16:07:52,080 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 16:07:52,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 153 transitions, 334 flow [2024-02-02 16:07:52,111 INFO L124 PetriNetUnfolderBase]: 4/164 cut-off events. [2024-02-02 16:07:52,111 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-02 16:07:52,113 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. [2024-02-02 16:07:52,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 153 transitions, 334 flow [2024-02-02 16:07:52,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 153 transitions, 334 flow [2024-02-02 16:07:52,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 16:07:52,119 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;@36765a0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 16:07:52,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2024-02-02 16:07:52,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 16:07:52,121 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-02 16:07:52,121 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-02 16:07:52,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:52,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 16:07:52,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 73 more)] === [2024-02-02 16:07:52,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash 547922651, now seen corresponding path program 1 times [2024-02-02 16:07:52,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:52,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551915331] [2024-02-02 16:07:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:52,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:52,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:52,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551915331] [2024-02-02 16:07:52,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551915331] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:52,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:52,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:52,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010277483] [2024-02-02 16:07:52,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:52,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:52,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:52,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:52,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 153 [2024-02-02 16:07:52,219 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) [2024-02-02 16:07:52,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:52,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 153 [2024-02-02 16:07:52,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand