./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-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/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8857f20b 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/48_ticket_lock_low_contention_vs-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-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-dev-8857f20-m [2024-01-29 22:51:11,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 22:51:11,961 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 22:51:11,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 22:51:11,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 22:51:11,990 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 22:51:11,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 22:51:11,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 22:51:11,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 22:51:11,992 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 22:51:11,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 22:51:11,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 22:51:11,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 22:51:11,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 22:51:11,994 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 22:51:11,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 22:51:11,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 22:51:11,995 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 22:51:11,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 22:51:11,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 22:51:11,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 22:51:11,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 22:51:11,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 22:51:11,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 22:51:11,996 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 22:51:11,996 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 22:51:11,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 22:51:11,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 22:51:11,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 22:51:11,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 22:51:11,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 22:51:11,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 22:51:11,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:51:11,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 22:51:11,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 22:51:11,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 22:51:11,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 22:51:11,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 22:51:12,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 22:51:12,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 22:51:12,000 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 22:51:12,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 22:51:12,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 22:51:12,001 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 22:51:12,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 22:51:12,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 22:51:12,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 22:51:12,239 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 22:51:12,240 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 22:51:12,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-01-29 22:51:13,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 22:51:13,386 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 22:51:13,387 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-01-29 22:51:13,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650ebd6e7/fdf219d78149425ab176eaebf625fd6d/FLAGa653052f7 [2024-01-29 22:51:13,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650ebd6e7/fdf219d78149425ab176eaebf625fd6d [2024-01-29 22:51:13,412 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 22:51:13,412 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 22:51:13,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml [2024-01-29 22:51:13,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 22:51:13,469 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 22:51:13,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 22:51:13,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 22:51:13,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 22:51:13,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:51:13" (1/2) ... [2024-01-29 22:51:13,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fcc59a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13, skipping insertion in model container [2024-01-29 22:51:13,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:51:13" (1/2) ... [2024-01-29 22:51:13,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4706543d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:51:13, skipping insertion in model container [2024-01-29 22:51:13,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:51:13" (2/2) ... [2024-01-29 22:51:13,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fcc59a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:13, skipping insertion in model container [2024-01-29 22:51:13,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:51:13" (2/2) ... [2024-01-29 22:51:13,478 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 22:51:13,500 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 22:51:13,501 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (c == 0U) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,501 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-29 22:51:13,502 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((c == 0U) && ((unsigned long )arg == 0UL)) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,502 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (c == 0U) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,502 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((c == 0U) && ((unsigned long )arg == 0UL)) && (c == 1U) [2024-01-29 22:51:13,503 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (c == 0U) && (c == 1U) [2024-01-29 22:51:13,503 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (unsigned long )arg == 0UL [2024-01-29 22:51:13,503 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((c == 0U) && ((unsigned long )arg == 0UL)) && (c == 1U) [2024-01-29 22:51:13,503 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (c == 0U) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,503 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (((c == 0U) && ((unsigned long )arg == 0UL)) && (c == 1U)) && (c == 1U) [2024-01-29 22:51:13,503 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (((c == 0U) && ((unsigned long )arg == 0UL)) && (c == 1U)) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,504 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (((c == 0U) && ((unsigned long )arg == 0UL)) && (c == 1U)) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,504 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-29 22:51:13,504 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (c == 0U) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,504 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] c == 0U [2024-01-29 22:51:13,504 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((c == 0U) && ((unsigned long )arg == 0UL)) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,504 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (c == 0U) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,504 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((c == 0U) && ((unsigned long )arg == 0UL)) && (c == 1U) [2024-01-29 22:51:13,505 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((c == 0U) && ((unsigned long )arg == 0UL)) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,505 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-29 22:51:13,505 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((c == 0U) && ((unsigned long )arg == 0UL)) && (c == 1U) [2024-01-29 22:51:13,505 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (c == 0U) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,505 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((c == 0U) && ((unsigned long )arg == 0UL)) && (c == 1U) [2024-01-29 22:51:13,506 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-29 22:51:13,506 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (c == 0U) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,506 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] ((c == 0U) && ((unsigned long )arg == 0UL)) && ((unsigned long )arg == 0UL) [2024-01-29 22:51:13,506 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (c == 0U) && (c == 1U) [2024-01-29 22:51:13,506 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] (unsigned long )arg == 0UL [2024-01-29 22:51:13,541 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 22:51:13,829 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/48_ticket_lock_low_contention_vs-pthread.i[30570,30583] [2024-01-29 22:51:13,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:51:13,847 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:51:13,989 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/48_ticket_lock_low_contention_vs-pthread.i[30570,30583] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:51:13,998 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:51:14,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:51:14,044 INFO L206 MainTranslator]: Completed translation [2024-01-29 22:51:14,045 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14 WrapperNode [2024-01-29 22:51:14,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 22:51:14,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 22:51:14,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 22:51:14,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 22:51:14,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,097 INFO L138 Inliner]: procedures = 165, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-01-29 22:51:14,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 22:51:14,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 22:51:14,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 22:51:14,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 22:51:14,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,131 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-01-29 22:51:14,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 22:51:14,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 22:51:14,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 22:51:14,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 22:51:14,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (1/1) ... [2024-01-29 22:51:14,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:51:14,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:51:14,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-29 22:51:14,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-29 22:51:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-29 22:51:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-29 22:51:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 22:51:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 22:51:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 22:51:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 22:51:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 22:51:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 22:51:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 22:51:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 22:51:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 22:51:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 22:51:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 22:51:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 22:51:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 22:51:14,220 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 22:51:14,333 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 22:51:14,334 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 22:51:14,553 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 22:51:14,554 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 22:51:14,625 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 22:51:14,625 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-29 22:51:14,625 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:51:14 BoogieIcfgContainer [2024-01-29 22:51:14,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 22:51:14,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 22:51:14,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 22:51:14,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 22:51:14,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:51:13" (1/4) ... [2024-01-29 22:51:14,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c8a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:51:14, skipping insertion in model container [2024-01-29 22:51:14,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:51:13" (2/4) ... [2024-01-29 22:51:14,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c8a42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:51:14, skipping insertion in model container [2024-01-29 22:51:14,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:51:14" (3/4) ... [2024-01-29 22:51:14,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c8a42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:51:14, skipping insertion in model container [2024-01-29 22:51:14,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:51:14" (4/4) ... [2024-01-29 22:51:14,631 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-pthread.i [2024-01-29 22:51:14,643 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 22:51:14,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-01-29 22:51:14,644 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 22:51:14,698 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:14,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions, 170 flow [2024-01-29 22:51:14,783 INFO L124 PetriNetUnfolderBase]: 5/125 cut-off events. [2024-01-29 22:51:14,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:14,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 125 events. 5/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 424 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2024-01-29 22:51:14,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 83 transitions, 170 flow [2024-01-29 22:51:14,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 83 transitions, 170 flow [2024-01-29 22:51:14,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:14,818 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;@498f43a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:14,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-01-29 22:51:14,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:14,820 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-01-29 22:51:14,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:14,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:14,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-29 22:51:14,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-29 22:51:14,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:14,828 INFO L85 PathProgramCache]: Analyzing trace with hash 8115141, now seen corresponding path program 1 times [2024-01-29 22:51:14,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:14,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95930247] [2024-01-29 22:51:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:14,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:14,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:14,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95930247] [2024-01-29 22:51:14,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95930247] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:14,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:14,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:51:14,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332165294] [2024-01-29 22:51:14,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:14,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-29 22:51:14,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:15,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-29 22:51:15,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-29 22:51:15,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 83 [2024-01-29 22:51:15,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 170 flow. Second operand has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:15,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 83 [2024-01-29 22:51:15,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:15,040 INFO L124 PetriNetUnfolderBase]: 5/42 cut-off events. [2024-01-29 22:51:15,040 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:15,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 42 events. 5/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 129 event pairs, 5 based on Foata normal form. 8/40 useless extension candidates. Maximal degree in co-relation 45. Up to 24 conditions per place. [2024-01-29 22:51:15,041 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 8 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2024-01-29 22:51:15,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 56 flow [2024-01-29 22:51:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-29 22:51:15,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-29 22:51:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 127 transitions. [2024-01-29 22:51:15,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7650602409638554 [2024-01-29 22:51:15,054 INFO L175 Difference]: Start difference. First operand has 83 places, 83 transitions, 170 flow. Second operand 2 states and 127 transitions. [2024-01-29 22:51:15,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 56 flow [2024-01-29 22:51:15,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 22:51:15,058 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 40 flow [2024-01-29 22:51:15,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2024-01-29 22:51:15,061 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -61 predicate places. [2024-01-29 22:51:15,061 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 40 flow [2024-01-29 22:51:15,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.5) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:15,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 22:51:15,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 22:51:15,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-29 22:51:15,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash 251652722, now seen corresponding path program 1 times [2024-01-29 22:51:15,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:15,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251642774] [2024-01-29 22:51:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:15,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:15,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251642774] [2024-01-29 22:51:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251642774] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:15,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:15,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:51:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893374454] [2024-01-29 22:51:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:15,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:15,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:15,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:15,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 83 [2024-01-29 22:51:15,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:15,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 83 [2024-01-29 22:51:15,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:15,259 INFO L124 PetriNetUnfolderBase]: 5/39 cut-off events. [2024-01-29 22:51:15,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:15,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 39 events. 5/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 111 event pairs, 3 based on Foata normal form. 3/35 useless extension candidates. Maximal degree in co-relation 64. Up to 16 conditions per place. [2024-01-29 22:51:15,261 INFO L140 encePairwiseOnDemand]: 81/83 looper letters, 8 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2024-01-29 22:51:15,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 58 flow [2024-01-29 22:51:15,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:15,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-01-29 22:51:15,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.714859437751004 [2024-01-29 22:51:15,267 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 40 flow. Second operand 3 states and 178 transitions. [2024-01-29 22:51:15,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 58 flow [2024-01-29 22:51:15,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 22:51:15,269 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 40 flow [2024-01-29 22:51:15,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2024-01-29 22:51:15,270 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -60 predicate places. [2024-01-29 22:51:15,271 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 40 flow [2024-01-29 22:51:15,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:15,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 22:51:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 22:51:15,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-29 22:51:15,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash -788571645, now seen corresponding path program 1 times [2024-01-29 22:51:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272509077] [2024-01-29 22:51:15,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:15,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:15,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272509077] [2024-01-29 22:51:15,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272509077] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:15,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:15,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:15,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605430132] [2024-01-29 22:51:15,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:15,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:15,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:15,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:15,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 83 [2024-01-29 22:51:15,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:15,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 83 [2024-01-29 22:51:15,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:15,469 INFO L124 PetriNetUnfolderBase]: 10/59 cut-off events. [2024-01-29 22:51:15,470 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 22:51:15,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 59 events. 10/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 193 event pairs, 0 based on Foata normal form. 6/61 useless extension candidates. Maximal degree in co-relation 99. Up to 22 conditions per place. [2024-01-29 22:51:15,470 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 17 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-01-29 22:51:15,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 26 transitions, 100 flow [2024-01-29 22:51:15,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-01-29 22:51:15,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228915662650602 [2024-01-29 22:51:15,472 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 40 flow. Second operand 4 states and 240 transitions. [2024-01-29 22:51:15,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 26 transitions, 100 flow [2024-01-29 22:51:15,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:51:15,474 INFO L231 Difference]: Finished difference. Result has 24 places, 16 transitions, 41 flow [2024-01-29 22:51:15,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=41, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2024-01-29 22:51:15,476 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, -59 predicate places. [2024-01-29 22:51:15,476 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 41 flow [2024-01-29 22:51:15,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:15,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-01-29 22:51:15,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 22:51:15,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-29 22:51:15,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1324022376, now seen corresponding path program 1 times [2024-01-29 22:51:15,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:15,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584836707] [2024-01-29 22:51:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:15,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:15,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 22:51:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:15,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 22:51:15,523 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 22:51:15,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2024-01-29 22:51:15,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 46 remaining) [2024-01-29 22:51:15,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 46 remaining) [2024-01-29 22:51:15,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 46 remaining) [2024-01-29 22:51:15,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 46 remaining) [2024-01-29 22:51:15,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 46 remaining) [2024-01-29 22:51:15,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 46 remaining) [2024-01-29 22:51:15,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 46 remaining) [2024-01-29 22:51:15,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 46 remaining) [2024-01-29 22:51:15,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 46 remaining) [2024-01-29 22:51:15,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 46 remaining) [2024-01-29 22:51:15,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 46 remaining) [2024-01-29 22:51:15,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONERROR_FUNCTION (33 of 46 remaining) [2024-01-29 22:51:15,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 46 remaining) [2024-01-29 22:51:15,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 46 remaining) [2024-01-29 22:51:15,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 46 remaining) [2024-01-29 22:51:15,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 46 remaining) [2024-01-29 22:51:15,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 46 remaining) [2024-01-29 22:51:15,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 46 remaining) [2024-01-29 22:51:15,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 46 remaining) [2024-01-29 22:51:15,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 46 remaining) [2024-01-29 22:51:15,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 46 remaining) [2024-01-29 22:51:15,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 46 remaining) [2024-01-29 22:51:15,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 46 remaining) [2024-01-29 22:51:15,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 46 remaining) [2024-01-29 22:51:15,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 46 remaining) [2024-01-29 22:51:15,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 46 remaining) [2024-01-29 22:51:15,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (18 of 46 remaining) [2024-01-29 22:51:15,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 46 remaining) [2024-01-29 22:51:15,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 46 remaining) [2024-01-29 22:51:15,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 46 remaining) [2024-01-29 22:51:15,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 46 remaining) [2024-01-29 22:51:15,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 46 remaining) [2024-01-29 22:51:15,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 46 remaining) [2024-01-29 22:51:15,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 46 remaining) [2024-01-29 22:51:15,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 46 remaining) [2024-01-29 22:51:15,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 46 remaining) [2024-01-29 22:51:15,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 46 remaining) [2024-01-29 22:51:15,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 46 remaining) [2024-01-29 22:51:15,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 46 remaining) [2024-01-29 22:51:15,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 46 remaining) [2024-01-29 22:51:15,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 46 remaining) [2024-01-29 22:51:15,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONERROR_FUNCTION (3 of 46 remaining) [2024-01-29 22:51:15,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 46 remaining) [2024-01-29 22:51:15,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 46 remaining) [2024-01-29 22:51:15,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 46 remaining) [2024-01-29 22:51:15,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 22:51:15,544 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-29 22:51:15,546 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-29 22:51:15,546 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-29 22:51:15,592 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-29 22:51:15,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 254 flow [2024-01-29 22:51:15,622 INFO L124 PetriNetUnfolderBase]: 8/206 cut-off events. [2024-01-29 22:51:15,622 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 22:51:15,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 206 events. 8/206 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 962 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 127. Up to 6 conditions per place. [2024-01-29 22:51:15,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 122 transitions, 254 flow [2024-01-29 22:51:15,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 122 transitions, 254 flow [2024-01-29 22:51:15,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:51:15,632 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;@498f43a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:51:15,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-01-29 22:51:15,633 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:51:15,634 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-01-29 22:51:15,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:51:15,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:15,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-29 22:51:15,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:51:15,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash 11870789, now seen corresponding path program 1 times [2024-01-29 22:51:15,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:15,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882995001] [2024-01-29 22:51:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:15,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:15,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:15,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882995001] [2024-01-29 22:51:15,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882995001] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:15,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:15,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:51:15,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836032898] [2024-01-29 22:51:15,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:15,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-29 22:51:15,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-29 22:51:15,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-29 22:51:15,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 122 [2024-01-29 22:51:15,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 122 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:15,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 122 [2024-01-29 22:51:15,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:15,690 INFO L124 PetriNetUnfolderBase]: 27/116 cut-off events. [2024-01-29 22:51:15,691 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-29 22:51:15,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 116 events. 27/116 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 558 event pairs, 27 based on Foata normal form. 34/124 useless extension candidates. Maximal degree in co-relation 72. Up to 70 conditions per place. [2024-01-29 22:51:15,692 INFO L140 encePairwiseOnDemand]: 118/122 looper letters, 10 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2024-01-29 22:51:15,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 80 flow [2024-01-29 22:51:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-29 22:51:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-29 22:51:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 188 transitions. [2024-01-29 22:51:15,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7704918032786885 [2024-01-29 22:51:15,694 INFO L175 Difference]: Start difference. First operand has 123 places, 122 transitions, 254 flow. Second operand 2 states and 188 transitions. [2024-01-29 22:51:15,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 80 flow [2024-01-29 22:51:15,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 22:51:15,695 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 60 flow [2024-01-29 22:51:15,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-01-29 22:51:15,696 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -92 predicate places. [2024-01-29 22:51:15,696 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 60 flow [2024-01-29 22:51:15,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:15,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-29 22:51:15,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 22:51:15,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:51:15,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:15,698 INFO L85 PathProgramCache]: Analyzing trace with hash 368077932, now seen corresponding path program 1 times [2024-01-29 22:51:15,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:15,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309702112] [2024-01-29 22:51:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:15,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309702112] [2024-01-29 22:51:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309702112] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:15,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:15,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:51:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446282196] [2024-01-29 22:51:15,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:15,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:51:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:51:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:51:15,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 122 [2024-01-29 22:51:15,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:15,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 122 [2024-01-29 22:51:15,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:15,822 INFO L124 PetriNetUnfolderBase]: 27/109 cut-off events. [2024-01-29 22:51:15,823 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-29 22:51:15,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 109 events. 27/109 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 506 event pairs, 17 based on Foata normal form. 7/97 useless extension candidates. Maximal degree in co-relation 186. Up to 46 conditions per place. [2024-01-29 22:51:15,823 INFO L140 encePairwiseOnDemand]: 120/122 looper letters, 11 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-01-29 22:51:15,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 86 flow [2024-01-29 22:51:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:51:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:51:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2024-01-29 22:51:15,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73224043715847 [2024-01-29 22:51:15,825 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 60 flow. Second operand 3 states and 268 transitions. [2024-01-29 22:51:15,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 86 flow [2024-01-29 22:51:15,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 22:51:15,826 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 60 flow [2024-01-29 22:51:15,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2024-01-29 22:51:15,827 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -91 predicate places. [2024-01-29 22:51:15,827 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 60 flow [2024-01-29 22:51:15,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:15,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 22:51:15,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 22:51:15,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:51:15,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:15,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1474319575, now seen corresponding path program 1 times [2024-01-29 22:51:15,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:15,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255018742] [2024-01-29 22:51:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:15,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:51:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:51:15,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:51:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255018742] [2024-01-29 22:51:15,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255018742] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:51:15,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:51:15,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:51:15,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306500016] [2024-01-29 22:51:15,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:51:15,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:51:15,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:51:15,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:51:15,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:51:15,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 122 [2024-01-29 22:51:15,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:51:15,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 122 [2024-01-29 22:51:15,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:51:15,971 INFO L124 PetriNetUnfolderBase]: 49/188 cut-off events. [2024-01-29 22:51:15,971 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-01-29 22:51:15,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 188 events. 49/188 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 958 event pairs, 11 based on Foata normal form. 18/191 useless extension candidates. Maximal degree in co-relation 318. Up to 80 conditions per place. [2024-01-29 22:51:15,973 INFO L140 encePairwiseOnDemand]: 119/122 looper letters, 21 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-01-29 22:51:15,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 137 flow [2024-01-29 22:51:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:51:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:51:15,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2024-01-29 22:51:15,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2024-01-29 22:51:15,974 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 60 flow. Second operand 4 states and 360 transitions. [2024-01-29 22:51:15,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 137 flow [2024-01-29 22:51:15,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:51:15,975 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 61 flow [2024-01-29 22:51:15,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=61, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-01-29 22:51:15,976 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -90 predicate places. [2024-01-29 22:51:15,976 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 61 flow [2024-01-29 22:51:15,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:51:15,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:51:15,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:51:15,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 22:51:15,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:51:15,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:51:15,978 INFO L85 PathProgramCache]: Analyzing trace with hash 358560876, now seen corresponding path program 1 times [2024-01-29 22:51:15,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:51:15,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250591947] [2024-01-29 22:51:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:51:15,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:51:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:15,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 22:51:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 22:51:15,993 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 22:51:15,993 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 22:51:15,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 61 remaining) [2024-01-29 22:51:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 61 remaining) [2024-01-29 22:51:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 61 remaining) [2024-01-29 22:51:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 61 remaining) [2024-01-29 22:51:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 61 remaining) [2024-01-29 22:51:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 61 remaining) [2024-01-29 22:51:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 61 remaining) [2024-01-29 22:51:15,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 61 remaining) [2024-01-29 22:51:15,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 61 remaining) [2024-01-29 22:51:15,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 61 remaining) [2024-01-29 22:51:15,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 61 remaining) [2024-01-29 22:51:15,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 61 remaining) [2024-01-29 22:51:15,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONERROR_FUNCTION (48 of 61 remaining) [2024-01-29 22:51:15,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 61 remaining) [2024-01-29 22:51:15,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 61 remaining) [2024-01-29 22:51:15,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 61 remaining) [2024-01-29 22:51:15,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 61 remaining) [2024-01-29 22:51:15,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 61 remaining) [2024-01-29 22:51:15,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 61 remaining) [2024-01-29 22:51:15,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 61 remaining) [2024-01-29 22:51:15,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 61 remaining) [2024-01-29 22:51:15,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 61 remaining) [2024-01-29 22:51:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 61 remaining) [2024-01-29 22:51:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 61 remaining) [2024-01-29 22:51:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 61 remaining) [2024-01-29 22:51:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 61 remaining) [2024-01-29 22:51:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (34 of 61 remaining) [2024-01-29 22:51:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 61 remaining) [2024-01-29 22:51:15,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 61 remaining) [2024-01-29 22:51:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 61 remaining) [2024-01-29 22:51:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 61 remaining) [2024-01-29 22:51:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 61 remaining) [2024-01-29 22:51:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 61 remaining) [2024-01-29 22:51:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 61 remaining) [2024-01-29 22:51:15,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 61 remaining) [2024-01-29 22:51:15,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 61 remaining) [2024-01-29 22:51:15,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 61 remaining) [2024-01-29 22:51:15,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 61 remaining) [2024-01-29 22:51:15,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 61 remaining) [2024-01-29 22:51:15,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 61 remaining) [2024-01-29 22:51:15,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 61 remaining) [2024-01-29 22:51:15,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 61 remaining) [2024-01-29 22:51:16,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONERROR_FUNCTION (18 of 61 remaining) [2024-01-29 22:51:16,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 61 remaining) [2024-01-29 22:51:16,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 61 remaining) [2024-01-29 22:51:16,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 61 remaining) [2024-01-29 22:51:16,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 61 remaining) [2024-01-29 22:51:16,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 61 remaining) [2024-01-29 22:51:16,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 61 remaining) [2024-01-29 22:51:16,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 61 remaining) [2024-01-29 22:51:16,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 61 remaining) [2024-01-29 22:51:16,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 61 remaining) [2024-01-29 22:51:16,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 61 remaining) [2024-01-29 22:51:16,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 61 remaining) [2024-01-29 22:51:16,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 61 remaining) [2024-01-29 22:51:16,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 61 remaining) [2024-01-29 22:51:16,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 61 remaining) [2024-01-29 22:51:16,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONERROR_FUNCTION (3 of 61 remaining) [2024-01-29 22:51:16,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 61 remaining) [2024-01-29 22:51:16,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 61 remaining) [2024-01-29 22:51:16,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 61 remaining) [2024-01-29 22:51:16,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 22:51:16,003 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-29 22:51:16,007 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-01-29 22:51:16,007 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-29 22:51:16,021 INFO L503 ceAbstractionStarter]: Automizer considered 28 witness invariants [2024-01-29 22:51:16,022 INFO L504 ceAbstractionStarter]: WitnessConsidered=28 [2024-01-29 22:51:16,022 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 10:51:16 BasicIcfg [2024-01-29 22:51:16,022 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-29 22:51:16,023 INFO L158 Benchmark]: Toolchain (without parser) took 2553.75ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 84.5MB in the beginning and 63.8MB in the end (delta: 20.7MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2024-01-29 22:51:16,023 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 92.3MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 22:51:16,023 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 132.1MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 22:51:16,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.93ms. Allocated memory is still 132.1MB. Free memory was 84.3MB in the beginning and 96.3MB in the end (delta: -12.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-29 22:51:16,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.53ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 22:51:16,024 INFO L158 Benchmark]: Boogie Preprocessor took 63.61ms. Allocated memory is still 132.1MB. Free memory was 94.2MB in the beginning and 92.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 22:51:16,024 INFO L158 Benchmark]: RCFGBuilder took 463.53ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 65.5MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-29 22:51:16,024 INFO L158 Benchmark]: TraceAbstraction took 1395.61ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 64.8MB in the beginning and 63.8MB in the end (delta: 1.0MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2024-01-29 22:51:16,025 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 92.3MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 132.1MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.93ms. Allocated memory is still 132.1MB. Free memory was 84.3MB in the beginning and 96.3MB in the end (delta: -12.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.53ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.61ms. Allocated memory is still 132.1MB. Free memory was 94.2MB in the beginning and 92.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 463.53ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 65.5MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1395.61ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 64.8MB in the beginning and 63.8MB in the end (delta: 1.0MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L689] unsigned c = 0; [L699] pthread_t t; VAL [c=0, s={3:0}, t={5:0}] [L700] COND FALSE !(__VERIFIER_nondet_int()) [L701] CALL thr1(0) [L692] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] [L693] CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[c],IntegerLiteral[0U]],BinaryExpression[COMPEQ,IdentifierExpression[c],IntegerLiteral[1U]]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 119 locations, 46 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 141 IncrementalHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 17 mSDtfsCounter, 141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 157 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 168 IncrementalHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 35 mSDtfsCounter, 168 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-29 22:51:16,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE