./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-queue-add-3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/weaver/popl20-queue-add-3.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-queue-add-3.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 21:03:01,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 21:03:01,237 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 21:03:01,242 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 21:03:01,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 21:03:01,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 21:03:01,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 21:03:01,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 21:03:01,269 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 21:03:01,272 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 21:03:01,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 21:03:01,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 21:03:01,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 21:03:01,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 21:03:01,275 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 21:03:01,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 21:03:01,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 21:03:01,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 21:03:01,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 21:03:01,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 21:03:01,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 21:03:01,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 21:03:01,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 21:03:01,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 21:03:01,278 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 21:03:01,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 21:03:01,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 21:03:01,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 21:03:01,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 21:03:01,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 21:03:01,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 21:03:01,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 21:03:01,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:03:01,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 21:03:01,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 21:03:01,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 21:03:01,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 21:03:01,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 21:03:01,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 21:03:01,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 21:03:01,282 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 21:03:01,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 21:03:01,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 21:03:01,282 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 21:03:01,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 21:03:01,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 21:03:01,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 21:03:01,551 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 21:03:01,551 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 21:03:01,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2024-06-03 21:03:02,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 21:03:02,720 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 21:03:02,721 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2024-06-03 21:03:02,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/877f764b4/ca42fa016e8746fd8aa868ef322c2384/FLAG317830f89 [2024-06-03 21:03:02,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/877f764b4/ca42fa016e8746fd8aa868ef322c2384 [2024-06-03 21:03:02,747 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 21:03:02,747 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 21:03:02,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-queue-add-3.wvr.yml/witness.yml [2024-06-03 21:03:02,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 21:03:02,848 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 21:03:02,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 21:03:02,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 21:03:02,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 21:03:02,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:03:02" (1/2) ... [2024-06-03 21:03:02,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6349297c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:02, skipping insertion in model container [2024-06-03 21:03:02,854 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:03:02" (1/2) ... [2024-06-03 21:03:02,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6fe71d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:03:02, skipping insertion in model container [2024-06-03 21:03:02,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:02" (2/2) ... [2024-06-03 21:03:02,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6349297c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:02, skipping insertion in model container [2024-06-03 21:03:02,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:02" (2/2) ... [2024-06-03 21:03:02,857 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 21:03:02,872 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 21:03:02,874 INFO L97 edCorrectnessWitness]: Location invariant before [L120-L120] ! multithreaded || (((((((((((((((((((((((((((((((((4294967296LL + (long long )q1_front) + (long long )q2_front >= 0LL && (4294967296LL + (long long )q1_front) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )q2_back) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n2) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )n1 >= 0LL) && (4294967296LL + (long long )N) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n2) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )n1 >= 0LL) && (4294967295LL - (long long )N) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) && (4294967295LL + (long long )N) - (long long )n1 >= 0LL) && (4294967295LL + (long long )N) - (long long )n2 >= 0LL) && (4294967294LL - (long long )n1) - (long long )n2 >= 0LL) && (4294967294LL - (long long )N) - (long long )n1 >= 0LL) && (4294967294LL - (long long )N) - (long long )n2 >= 0LL) [2024-06-03 21:03:02,874 INFO L97 edCorrectnessWitness]: Location invariant before [L121-L121] ! multithreaded || (((((((((((((((((((((((((((((((((4294967296LL + (long long )q1_front) + (long long )q2_front >= 0LL && (4294967296LL + (long long )q1_front) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )q2_back) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n2) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )n1 >= 0LL) && (4294967296LL + (long long )N) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n2) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )n1 >= 0LL) && (4294967295LL - (long long )N) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) && (4294967295LL + (long long )N) - (long long )n1 >= 0LL) && (4294967295LL + (long long )N) - (long long )n2 >= 0LL) && (4294967294LL - (long long )n1) - (long long )n2 >= 0LL) && (4294967294LL - (long long )N) - (long long )n1 >= 0LL) && (4294967294LL - (long long )N) - (long long )n2 >= 0LL) [2024-06-03 21:03:02,874 INFO L97 edCorrectnessWitness]: Location invariant before [L119-L119] ! multithreaded || (((((((((((((((((((((((((((((((((4294967296LL + (long long )q1_front) + (long long )q2_front >= 0LL && (4294967296LL + (long long )q1_front) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )q2_back) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n2) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )n1 >= 0LL) && (4294967296LL + (long long )N) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n2) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )n1 >= 0LL) && (4294967295LL - (long long )N) + (long long )n2 >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) && (4294967295LL + (long long )N) - (long long )n1 >= 0LL) && (4294967295LL + (long long )N) - (long long )n2 >= 0LL) && (4294967294LL - (long long )n1) - (long long )n2 >= 0LL) && (4294967294LL - (long long )N) - (long long )n1 >= 0LL) && (4294967294LL - (long long )N) - (long long )n2 >= 0LL) [2024-06-03 21:03:02,874 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 21:03:02,874 INFO L106 edCorrectnessWitness]: ghost_update [L118-L118] multithreaded = 1; [2024-06-03 21:03:02,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 21:03:03,043 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:03:03,049 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 21:03:03,146 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:03:03,169 INFO L206 MainTranslator]: Completed translation [2024-06-03 21:03:03,172 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03 WrapperNode [2024-06-03 21:03:03,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 21:03:03,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 21:03:03,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 21:03:03,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 21:03:03,178 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 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,196 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 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,232 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 244 [2024-06-03 21:03:03,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 21:03:03,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 21:03:03,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 21:03:03,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 21:03:03,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,276 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-06-03 21:03:03,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 21:03:03,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 21:03:03,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 21:03:03,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 21:03:03,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (1/1) ... [2024-06-03 21:03:03,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:03:03,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:03,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 21:03:03,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 21:03:03,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 21:03:03,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 21:03:03,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 21:03:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 21:03:03,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 21:03:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-03 21:03:03,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-03 21:03:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 21:03:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 21:03:03,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-03 21:03:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-03 21:03:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 21:03:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 21:03:03,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-03 21:03:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 21:03:03,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 21:03:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-03 21:03:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-03 21:03:03,380 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 21:03:03,482 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 21:03:03,484 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 21:03:03,880 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 21:03:03,880 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 21:03:04,080 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 21:03:04,081 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-06-03 21:03:04,081 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:03:04 BoogieIcfgContainer [2024-06-03 21:03:04,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 21:03:04,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 21:03:04,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 21:03:04,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 21:03:04,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 09:03:02" (1/4) ... [2024-06-03 21:03:04,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ae3587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:03:04, skipping insertion in model container [2024-06-03 21:03:04,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:03:02" (2/4) ... [2024-06-03 21:03:04,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ae3587 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:03:04, skipping insertion in model container [2024-06-03 21:03:04,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:03:03" (3/4) ... [2024-06-03 21:03:04,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ae3587 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:03:04, skipping insertion in model container [2024-06-03 21:03:04,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:03:04" (4/4) ... [2024-06-03 21:03:04,090 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2024-06-03 21:03:04,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 21:03:04,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-03 21:03:04,103 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 21:03:04,164 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-03 21:03:04,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 121 flow [2024-06-03 21:03:04,232 INFO L124 PetriNetUnfolderBase]: 7/47 cut-off events. [2024-06-03 21:03:04,233 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-03 21:03:04,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 7/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-06-03 21:03:04,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 121 flow [2024-06-03 21:03:04,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 45 transitions, 105 flow [2024-06-03 21:03:04,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 21:03:04,258 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;@35298f07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 21:03:04,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-03 21:03:04,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 21:03:04,263 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2024-06-03 21:03:04,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 21:03:04,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:04,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:04,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 21:03:04,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:04,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1253065684, now seen corresponding path program 1 times [2024-06-03 21:03:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:04,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717456586] [2024-06-03 21:03:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:04,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:05,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717456586] [2024-06-03 21:03:05,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717456586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:03:05,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:03:05,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:03:05,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391974955] [2024-06-03 21:03:05,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:03:05,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:03:05,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:05,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:03:05,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:03:05,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-03 21:03:05,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:05,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:05,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-03 21:03:05,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:06,257 INFO L124 PetriNetUnfolderBase]: 1357/2579 cut-off events. [2024-06-03 21:03:06,258 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-06-03 21:03:06,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4671 conditions, 2579 events. 1357/2579 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17528 event pairs, 1005 based on Foata normal form. 419/2644 useless extension candidates. Maximal degree in co-relation 2581. Up to 1150 conditions per place. [2024-06-03 21:03:06,275 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 28 selfloop transitions, 3 changer transitions 23/67 dead transitions. [2024-06-03 21:03:06,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 272 flow [2024-06-03 21:03:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:03:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:03:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-06-03 21:03:06,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564 [2024-06-03 21:03:06,287 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 105 flow. Second operand 5 states and 141 transitions. [2024-06-03 21:03:06,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 272 flow [2024-06-03 21:03:06,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 254 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-03 21:03:06,299 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 112 flow [2024-06-03 21:03:06,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-06-03 21:03:06,304 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-06-03 21:03:06,304 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 112 flow [2024-06-03 21:03:06,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:06,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:03:06,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:03:06,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 21:03:06,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 21:03:06,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:03:06,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1440936823, now seen corresponding path program 1 times [2024-06-03 21:03:06,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:03:06,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912277705] [2024-06-03 21:03:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:06,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:03:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:07,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:03:07,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912277705] [2024-06-03 21:03:07,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912277705] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 21:03:07,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663477747] [2024-06-03 21:03:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:03:07,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:07,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:03:07,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 21:03:07,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-03 21:03:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:03:07,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 18 conjunts are in the unsatisfiable core [2024-06-03 21:03:07,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 21:03:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:07,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-03 21:03:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:03:08,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663477747] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-03 21:03:08,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-03 21:03:08,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-06-03 21:03:08,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592945625] [2024-06-03 21:03:08,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-03 21:03:08,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 21:03:08,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:03:08,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 21:03:08,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-06-03 21:03:08,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-03 21:03:08,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 112 flow. Second operand has 14 states, 14 states have (on average 17.928571428571427) internal successors, (251), 14 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:08,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:03:08,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-03 21:03:08,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:03:09,680 INFO L124 PetriNetUnfolderBase]: 1094/2190 cut-off events. [2024-06-03 21:03:09,680 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-06-03 21:03:09,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3882 conditions, 2190 events. 1094/2190 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14949 event pairs, 800 based on Foata normal form. 204/2125 useless extension candidates. Maximal degree in co-relation 3877. Up to 785 conditions per place. [2024-06-03 21:03:09,688 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2024-06-03 21:03:09,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 262 flow [2024-06-03 21:03:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 21:03:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 21:03:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-03 21:03:09,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-06-03 21:03:09,698 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 112 flow. Second operand 6 states and 154 transitions. [2024-06-03 21:03:09,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 262 flow [2024-06-03 21:03:09,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 256 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 21:03:09,700 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-06-03 21:03:09,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2024-06-03 21:03:09,701 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-06-03 21:03:09,701 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-06-03 21:03:09,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.928571428571427) internal successors, (251), 14 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:03:09,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-03 21:03:09,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-03 21:03:09,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-03 21:03:09,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-03 21:03:09,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-03 21:03:09,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-03 21:03:09,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-03 21:03:09,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:03:09,936 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-06-03 21:03:09,939 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 21:03:09,940 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 21:03:09,944 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-03 21:03:09,944 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-03 21:03:09,945 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 09:03:09 BasicIcfg [2024-06-03 21:03:09,946 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 21:03:09,947 INFO L158 Benchmark]: Toolchain (without parser) took 7098.44ms. Allocated memory was 138.4MB in the beginning and 295.7MB in the end (delta: 157.3MB). Free memory was 111.6MB in the beginning and 135.2MB in the end (delta: -23.6MB). Peak memory consumption was 179.6MB. Max. memory is 16.1GB. [2024-06-03 21:03:09,947 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:03:09,947 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 138.4MB. Free memory is still 68.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:03:09,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.89ms. Allocated memory is still 138.4MB. Free memory was 111.2MB in the beginning and 94.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-03 21:03:09,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.97ms. Allocated memory is still 138.4MB. Free memory was 94.1MB in the beginning and 91.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 21:03:09,951 INFO L158 Benchmark]: Boogie Preprocessor took 78.15ms. Allocated memory is still 138.4MB. Free memory was 90.9MB in the beginning and 88.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:03:09,951 INFO L158 Benchmark]: RCFGBuilder took 768.61ms. Allocated memory is still 138.4MB. Free memory was 88.0MB in the beginning and 59.1MB in the end (delta: 28.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-06-03 21:03:09,952 INFO L158 Benchmark]: TraceAbstraction took 5862.63ms. Allocated memory was 138.4MB in the beginning and 295.7MB in the end (delta: 157.3MB). Free memory was 58.4MB in the beginning and 135.2MB in the end (delta: -76.8MB). Peak memory consumption was 127.4MB. Max. memory is 16.1GB. [2024-06-03 21:03:09,959 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 138.4MB. Free memory is still 68.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.89ms. Allocated memory is still 138.4MB. Free memory was 111.2MB in the beginning and 94.1MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.97ms. Allocated memory is still 138.4MB. Free memory was 94.1MB in the beginning and 91.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.15ms. Allocated memory is still 138.4MB. Free memory was 90.9MB in the beginning and 88.0MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 768.61ms. Allocated memory is still 138.4MB. Free memory was 88.0MB in the beginning and 59.1MB in the end (delta: 28.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5862.63ms. Allocated memory was 138.4MB in the beginning and 295.7MB in the end (delta: 157.3MB). Free memory was 58.4MB in the beginning and 135.2MB in the end (delta: -76.8MB). Peak memory consumption was 127.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 120]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 121]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 69 locations, 6 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: 5.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 264 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 256 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 317 IncrementalHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 0 mSDtfsCounter, 317 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=1, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 3746 SizeOfPredicates, 1 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 21:03:09,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE