./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 cde23df1 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-cde23df-m [2024-06-14 14:21:03,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:21:03,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:21:03,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:21:03,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:21:03,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:21:03,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:21:03,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:21:03,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:21:03,851 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:21:03,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:21:03,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:21:03,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:21:03,854 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:21:03,854 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:21:03,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:21:03,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:21:03,855 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:21:03,855 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:21:03,855 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:21:03,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:21:03,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:21:03,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:21:03,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:21:03,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:21:03,857 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:21:03,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:21:03,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:21:03,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:21:03,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:21:03,859 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:21:03,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:21:03,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:21:03,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:21:03,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:21:03,860 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:21:03,860 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:21:03,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:21:03,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:21:03,860 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:21:03,861 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:21:03,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:21:03,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:21:03,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:21:04,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:21:04,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:21:04,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:21:04,090 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:21:04,091 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:21:04,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2024-06-14 14:21:05,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:21:05,437 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:21:05,437 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2024-06-14 14:21:05,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed0d8ba2/c1cc20ffb0044edba5fc55e630bafabe/FLAG8f6bbc957 [2024-06-14 14:21:05,456 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed0d8ba2/c1cc20ffb0044edba5fc55e630bafabe [2024-06-14 14:21:05,458 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:21:05,458 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:21:05,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-queue-add-3.wvr.yml/witness.yml [2024-06-14 14:21:05,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:21:05,532 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:21:05,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:21:05,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:21:05,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:21:05,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:21:05" (1/2) ... [2024-06-14 14:21:05,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f18783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:05, skipping insertion in model container [2024-06-14 14:21:05,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:21:05" (1/2) ... [2024-06-14 14:21:05,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@706bff64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:05, skipping insertion in model container [2024-06-14 14:21:05,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:05" (2/2) ... [2024-06-14 14:21:05,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f18783 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05, skipping insertion in model container [2024-06-14 14:21:05,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:05" (2/2) ... [2024-06-14 14:21:05,541 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:21:05,555 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:21:05,556 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) [2024-06-14 14:21:05,556 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) [2024-06-14 14:21:05,557 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) [2024-06-14 14:21:05,557 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:21:05,557 INFO L106 edCorrectnessWitness]: ghost_update [L118-L118] multithreaded = 1; [2024-06-14 14:21:05,573 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:21:05,742 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:21:05,749 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:21:05,823 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:21:05,841 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:21:05,841 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05 WrapperNode [2024-06-14 14:21:05,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:21:05,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:21:05,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:21:05,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:21:05,860 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 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:05,868 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 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:05,915 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 247 [2024-06-14 14:21:05,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:21:05,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:21:05,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:21:05,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:21:05,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:05,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:05,940 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:05,970 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]. [2024-06-14 14:21:05,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:05,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:05,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:05,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:05,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:06,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:06,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:21:06,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:21:06,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:21:06,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:21:06,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (1/1) ... [2024-06-14 14:21:06,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:21:06,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:06,057 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) [2024-06-14 14:21:06,079 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 [2024-06-14 14:21:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:21:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-14 14:21:06,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-14 14:21:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-14 14:21:06,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-14 14:21:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-14 14:21:06,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-14 14:21:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:21:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 14:21:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-14 14:21:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-14 14:21:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 14:21:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 14:21:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-14 14:21:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:21:06,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:21:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-14 14:21:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-14 14:21:06,103 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:21:06,215 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:21:06,217 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:21:06,564 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:21:06,565 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:21:06,821 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:21:06,822 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-06-14 14:21:06,822 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:21:06 BoogieIcfgContainer [2024-06-14 14:21:06,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:21:06,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:21:06,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:21:06,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:21:06,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:21:05" (1/4) ... [2024-06-14 14:21:06,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389afd84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:21:06, skipping insertion in model container [2024-06-14 14:21:06,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:05" (2/4) ... [2024-06-14 14:21:06,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389afd84 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:21:06, skipping insertion in model container [2024-06-14 14:21:06,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:05" (3/4) ... [2024-06-14 14:21:06,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389afd84 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:21:06, skipping insertion in model container [2024-06-14 14:21:06,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:21:06" (4/4) ... [2024-06-14 14:21:06,831 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2024-06-14 14:21:06,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:21:06,844 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 14:21:06,845 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:21:06,889 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-14 14:21:06,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 121 flow [2024-06-14 14:21:06,951 INFO L124 PetriNetUnfolderBase]: 7/47 cut-off events. [2024-06-14 14:21:06,952 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-14 14:21:06,955 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 80 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. [2024-06-14 14:21:06,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 121 flow [2024-06-14 14:21:06,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 45 transitions, 105 flow [2024-06-14 14:21:06,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:21:06,976 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;@32c17657, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:21:06,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 14:21:06,982 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:21:06,982 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2024-06-14 14:21:06,982 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:21:06,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:06,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:06,983 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)] === [2024-06-14 14:21:06,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash -774858670, now seen corresponding path program 1 times [2024-06-14 14:21:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:06,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812601178] [2024-06-14 14:21:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:06,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:08,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:08,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812601178] [2024-06-14 14:21:08,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812601178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:08,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:08,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:21:08,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728898054] [2024-06-14 14:21:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:08,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:21:08,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:21:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:21:08,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-14 14:21:08,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:08,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:08,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-14 14:21:08,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:09,016 INFO L124 PetriNetUnfolderBase]: 2006/3501 cut-off events. [2024-06-14 14:21:09,016 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-06-14 14:21:09,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6393 conditions, 3501 events. 2006/3501 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21740 event pairs, 1638 based on Foata normal form. 452/3572 useless extension candidates. Maximal degree in co-relation 3546. Up to 1608 conditions per place. [2024-06-14 14:21:09,033 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 31 selfloop transitions, 3 changer transitions 26/70 dead transitions. [2024-06-14 14:21:09,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 290 flow [2024-06-14 14:21:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:21:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:21:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-14 14:21:09,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528 [2024-06-14 14:21:09,043 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 105 flow. Second operand 5 states and 132 transitions. [2024-06-14 14:21:09,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 290 flow [2024-06-14 14:21:09,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 272 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-14 14:21:09,050 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 112 flow [2024-06-14 14:21:09,051 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} [2024-06-14 14:21:09,053 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-06-14 14:21:09,053 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 112 flow [2024-06-14 14:21:09,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:09,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:09,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:09,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:21:09,054 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)] === [2024-06-14 14:21:09,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash 60718929, now seen corresponding path program 1 times [2024-06-14 14:21:09,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:09,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859896386] [2024-06-14 14:21:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:09,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859896386] [2024-06-14 14:21:09,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859896386] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:21:09,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713519459] [2024-06-14 14:21:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:09,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:21:09,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:09,736 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) [2024-06-14 14:21:09,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-14 14:21:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:09,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 18 conjunts are in the unsatisfiable core [2024-06-14 14:21:09,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:21:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:10,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 14:21:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:11,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713519459] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 14:21:11,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 14:21:11,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-06-14 14:21:11,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938046282] [2024-06-14 14:21:11,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 14:21:11,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 14:21:11,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 14:21:11,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-06-14 14:21:11,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-06-14 14:21:11,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 112 flow. Second operand has 14 states, 14 states have (on average 14.928571428571429) internal successors, (209), 14 states have internal predecessors, (209), 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) [2024-06-14 14:21:11,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:11,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-06-14 14:21:11,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:12,413 INFO L124 PetriNetUnfolderBase]: 1634/2962 cut-off events. [2024-06-14 14:21:12,413 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-06-14 14:21:12,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5279 conditions, 2962 events. 1634/2962 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18356 event pairs, 1298 based on Foata normal form. 312/2984 useless extension candidates. Maximal degree in co-relation 5274. Up to 1086 conditions per place. [2024-06-14 14:21:12,420 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2024-06-14 14:21:12,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 280 flow [2024-06-14 14:21:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:21:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:21:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-14 14:21:12,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-14 14:21:12,430 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 112 flow. Second operand 6 states and 142 transitions. [2024-06-14 14:21:12,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 280 flow [2024-06-14 14:21:12,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 274 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 14:21:12,432 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-06-14 14:21:12,433 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} [2024-06-14 14:21:12,434 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-06-14 14:21:12,434 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-06-14 14:21:12,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.928571428571429) internal successors, (209), 14 states have internal predecessors, (209), 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) [2024-06-14 14:21:12,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-14 14:21:12,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-14 14:21:12,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-14 14:21:12,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-14 14:21:12,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-14 14:21:12,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-14 14:21:12,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-14 14:21:12,651 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 [2024-06-14 14:21:12,651 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-06-14 14:21:12,655 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 14:21:12,655 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 14:21:12,663 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-14 14:21:12,663 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-14 14:21:12,664 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 02:21:12 BasicIcfg [2024-06-14 14:21:12,664 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 14:21:12,665 INFO L158 Benchmark]: Toolchain (without parser) took 7133.01ms. Allocated memory was 159.4MB in the beginning and 281.0MB in the end (delta: 121.6MB). Free memory was 86.8MB in the beginning and 203.7MB in the end (delta: -116.9MB). Peak memory consumption was 143.5MB. Max. memory is 16.1GB. [2024-06-14 14:21:12,665 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 87.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:21:12,667 INFO L158 Benchmark]: Witness Parser took 0.86ms. Allocated memory is still 159.4MB. Free memory was 89.9MB in the beginning and 89.8MB in the end (delta: 94.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:21:12,668 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.05ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 119.8MB in the end (delta: -33.2MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2024-06-14 14:21:12,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.27ms. Allocated memory is still 159.4MB. Free memory was 119.8MB in the beginning and 116.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 14:21:12,670 INFO L158 Benchmark]: Boogie Preprocessor took 77.94ms. Allocated memory is still 159.4MB. Free memory was 116.9MB in the beginning and 113.5MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:21:12,671 INFO L158 Benchmark]: RCFGBuilder took 815.96ms. Allocated memory is still 159.4MB. Free memory was 113.5MB in the beginning and 94.7MB in the end (delta: 18.8MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2024-06-14 14:21:12,671 INFO L158 Benchmark]: TraceAbstraction took 5840.03ms. Allocated memory was 159.4MB in the beginning and 281.0MB in the end (delta: 121.6MB). Free memory was 93.9MB in the beginning and 203.7MB in the end (delta: -109.8MB). Peak memory consumption was 149.5MB. Max. memory is 16.1GB. [2024-06-14 14:21:12,674 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 113.2MB. Free memory is still 87.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.86ms. Allocated memory is still 159.4MB. Free memory was 89.9MB in the beginning and 89.8MB in the end (delta: 94.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.05ms. Allocated memory is still 159.4MB. Free memory was 86.6MB in the beginning and 119.8MB in the end (delta: -33.2MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.27ms. Allocated memory is still 159.4MB. Free memory was 119.8MB in the beginning and 116.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.94ms. Allocated memory is still 159.4MB. Free memory was 116.9MB in the beginning and 113.5MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 815.96ms. Allocated memory is still 159.4MB. Free memory was 113.5MB in the beginning and 94.7MB in the end (delta: 18.8MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5840.03ms. Allocated memory was 159.4MB in the beginning and 281.0MB in the end (delta: 121.6MB). Free memory was 93.9MB in the beginning and 203.7MB in the end (delta: -109.8MB). Peak memory consumption was 149.5MB. 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: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 300 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 341 IncrementalHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 0 mSDtfsCounter, 341 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, 3.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 3746 SizeOfPredicates, 1 NumberOfNonLiveVariables, 128 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! [2024-06-14 14:21:12,715 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