./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/apache-get-tag.i.p+nlh-reducer.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/referee/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/referee/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/referee/data -tc /storage/repos/certificate-witnesses-artifact/referee/config/RefereeReachWitnessValidation.xml -i ../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c ../results/automizer-verification-files/SV-COMP24_unreach-call/apache-get-tag.i.p+nlh-reducer.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 20:46:43,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:46:43,269 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-11 20:46:43,273 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:46:43,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:46:43,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:46:43,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:46:43,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:46:43,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:46:43,313 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:46:43,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:46:43,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:46:43,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:46:43,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:46:43,315 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:46:43,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:46:43,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:46:43,317 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:46:43,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:46:43,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:46:43,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:46:43,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:46:43,320 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:46:43,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:46:43,321 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:46:43,321 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:46:43,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:46:43,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:46:43,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:46:43,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:46:43,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:46:43,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:46:43,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:46:43,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:46:43,324 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:46:43,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:46:43,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:46:43,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:46:43,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:46:43,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:46:43,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:46:43,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:46:43,327 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/certificate-witnesses-artifact/referee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-11 20:46:43,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:46:43,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:46:43,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:46:43,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:46:43,609 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:46:43,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c [2024-09-11 20:46:45,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:46:45,335 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:46:45,336 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c [2024-09-11 20:46:45,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/7ca3f6a22/856f52a53f9e4daead47b013781bfea8/FLAGf681a92f1 [2024-09-11 20:46:45,645 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/7ca3f6a22/856f52a53f9e4daead47b013781bfea8 [2024-09-11 20:46:45,649 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-11 20:46:45,649 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-11 20:46:45,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/apache-get-tag.i.p+nlh-reducer.yml/witness-2.1.yml [2024-09-11 20:46:45,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:46:45,716 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-11 20:46:45,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:46:45,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:46:45,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:46:45,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:46:45" (1/2) ... [2024-09-11 20:46:45,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e1446e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:46:45, skipping insertion in model container [2024-09-11 20:46:45,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:46:45" (1/2) ... [2024-09-11 20:46:45,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@356e629f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:46:45, skipping insertion in model container [2024-09-11 20:46:45,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 11.09 08:46:45" (2/2) ... [2024-09-11 20:46:45,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e1446e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:45, skipping insertion in model container [2024-09-11 20:46:45,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 11.09 08:46:45" (2/2) ... [2024-09-11 20:46:45,771 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-11 20:46:45,772 INFO L1541 ArrayList]: Location invariant before [L96-L283] ((1 <= main__t) && (main__t <= main__tagbuf_len)) [2024-09-11 20:46:45,772 INFO L1541 ArrayList]: Location invariant before [L132-L282] ((1 <= main__t) && (((long long) main__t + 1) <= main__tagbuf_len)) [2024-09-11 20:46:45,772 INFO L1541 ArrayList]: Location invariant before [L64-L3001] (((main__t == 0) && (1 <= main__tagbuf_len)) || ((1 <= main__t) && (((long long) main__t + 1) <= main__tagbuf_len))) [2024-09-11 20:46:45,773 INFO L1541 ArrayList]: Location invariant before [L2591-L2647] ((((long long) main__t + 1) <= main__tagbuf_len) && (59 <= main__t)) [2024-09-11 20:46:45,773 INFO L1541 ArrayList]: Location invariant before [L25-L3002] ((0 <= main__t) && (main__t <= main__tagbuf_len)) [2024-09-11 20:46:45,834 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:46:46,004 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[901,914] [2024-09-11 20:46:46,013 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1116,1129] [2024-09-11 20:46:46,016 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1625,1638] [2024-09-11 20:46:46,017 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1840,1853] [2024-09-11 20:46:46,021 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2157,2170] [2024-09-11 20:46:46,023 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2372,2385] [2024-09-11 20:46:46,025 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2867,2880] [2024-09-11 20:46:46,029 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3082,3095] [2024-09-11 20:46:46,032 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3384,3397] [2024-09-11 20:46:46,033 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3602,3615] [2024-09-11 20:46:46,034 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3878,3891] [2024-09-11 20:46:46,036 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4096,4109] [2024-09-11 20:46:46,042 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4582,4595] [2024-09-11 20:46:46,043 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4800,4813] [2024-09-11 20:46:46,286 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[47686,47699] [2024-09-11 20:46:46,294 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[47907,47920] [2024-09-11 20:46:46,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:46:46,341 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 20:46:46,359 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[901,914] [2024-09-11 20:46:46,361 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1116,1129] [2024-09-11 20:46:46,363 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1625,1638] [2024-09-11 20:46:46,364 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1840,1853] [2024-09-11 20:46:46,365 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2157,2170] [2024-09-11 20:46:46,366 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2372,2385] [2024-09-11 20:46:46,371 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2867,2880] [2024-09-11 20:46:46,373 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3082,3095] [2024-09-11 20:46:46,374 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3384,3397] [2024-09-11 20:46:46,375 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3602,3615] [2024-09-11 20:46:46,380 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3878,3891] [2024-09-11 20:46:46,381 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4096,4109] [2024-09-11 20:46:46,386 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4582,4595] [2024-09-11 20:46:46,387 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4800,4813] Start Parsing Local Start Parsing Local [2024-09-11 20:46:46,561 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[47686,47699] [2024-09-11 20:46:46,566 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[47907,47920] Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-11 20:46:46,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:46:46,607 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:46:46,608 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46 WrapperNode [2024-09-11 20:46:46,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:46:46,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:46:46,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:46:46,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:46:46,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,674 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-11 20:46:46,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:46:46,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:46:46,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:46:46,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:46:46,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (1/1) ... [2024-09-11 20:46:46,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:46:46,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-11 20:46:46,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-11 20:46:46,791 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-11 20:46:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-11 20:46:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:46:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-11 20:46:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-11 20:46:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-11 20:46:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-11 20:46:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-11 20:46:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-11 20:46:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:46:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-11 20:46:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-11 20:46:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-11 20:46:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-11 20:46:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-11 20:46:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 20:46:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:46:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-11 20:46:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-11 20:46:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-11 20:46:47,048 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:46:47,051 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:46:48,201 INFO L? ?]: Removed 617 outVars from TransFormulas that were not future-live. [2024-09-11 20:46:48,201 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:46:48,253 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:46:48,254 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:46:48,255 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:46:48 BoogieIcfgContainer [2024-09-11 20:46:48,255 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:46:48,255 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-11 20:46:48,256 INFO L270 PluginConnector]: Initializing Referee... [2024-09-11 20:46:48,256 INFO L274 PluginConnector]: Referee initialized [2024-09-11 20:46:48,257 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 11.09 08:46:45" (1/4) ... [2024-09-11 20:46:48,258 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@4395450c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 11.09 08:46:48, skipping insertion in model container [2024-09-11 20:46:48,258 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 11.09 08:46:45" (2/4) ... [2024-09-11 20:46:48,258 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@4395450c and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:46:48, skipping insertion in model container [2024-09-11 20:46:48,258 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:46" (3/4) ... [2024-09-11 20:46:48,259 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@4395450c and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:46:48, skipping insertion in model container [2024-09-11 20:46:48,259 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:46:48" (4/4) ... [2024-09-11 20:46:48,260 INFO L79 RefereeObserver]: Analyzing ICFG apache-get-tag.i.p+nlh-reducer.c [2024-09-11 20:46:48,265 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-11 20:46:48,268 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr9ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 328 edges. [2024-09-11 20:46:48,269 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr13ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 331 edges. [2024-09-11 20:46:48,269 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr3ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 5 edges. [2024-09-11 20:46:48,269 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr2ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 314 edges. [2024-09-11 20:46:48,270 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr12ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 330 edges. [2024-09-11 20:46:48,271 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr6ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 328 edges. [2024-09-11 20:46:48,271 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr16ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 330 edges. [2024-09-11 20:46:48,272 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr5ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 314 edges. [2024-09-11 20:46:48,273 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr19ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 251 edges. [2024-09-11 20:46:48,273 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr7ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 330 edges. [2024-09-11 20:46:48,274 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr1ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 313 edges. [2024-09-11 20:46:48,275 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr11ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 329 edges. [2024-09-11 20:46:48,276 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr14ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 329 edges. [2024-09-11 20:46:48,277 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr8ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 331 edges. [2024-09-11 20:46:48,277 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr18ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 243 edges. [2024-09-11 20:46:48,278 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr15ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 329 edges. [2024-09-11 20:46:48,278 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr20ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 251 edges. [2024-09-11 20:46:48,278 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 3 edges. [2024-09-11 20:46:48,279 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr17ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 331 edges. [2024-09-11 20:46:48,280 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr4ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 313 edges. [2024-09-11 20:46:48,281 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr10ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 329 edges. [2024-09-11 20:46:48,281 INFO L130 InvariantChecker]: Will check 21 loop-free subgraphs from procedure entry to error location [2024-09-11 20:46:48,501 INFO L314 BlockEncoder]: Initial Icfg 265 locations, 328 edges [2024-09-11 20:46:48,502 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:46:48,503 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:46:48,503 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:46:48,504 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:46:48,507 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:46:52,206 INFO L101 BaseMinimizeStates]: Removed 1284 edges and 261 locations by large block encoding [2024-09-11 20:46:52,208 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:46:52,208 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:46:52,208 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:46:52,209 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:46:52,889 INFO L314 BlockEncoder]: Encoded RCFG 4 locations, 8 edges [2024-09-11 20:46:52,890 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.referee has thrown an exception: java.lang.AssertionError: Either subgraph not acyclic or there is a bug at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AcyclicSubgraphMerger.(AcyclicSubgraphMerger.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.InvariantChecker.(InvariantChecker.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeStarter.(RefereeStarter.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver.finish(RefereeObserver.java:80) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-09-11 20:46:52,896 INFO L158 Benchmark]: Toolchain (without parser) took 7178.85ms. Allocated memory was 142.6MB in the beginning and 650.1MB in the end (delta: 507.5MB). Free memory was 67.9MB in the beginning and 402.9MB in the end (delta: -335.0MB). Peak memory consumption was 428.0MB. Max. memory is 16.1GB. [2024-09-11 20:46:52,897 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 105.9MB in the end (delta: 307.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:46:52,898 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:46:52,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 891.61ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 67.6MB in the beginning and 136.1MB in the end (delta: -68.5MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2024-09-11 20:46:52,900 INFO L158 Benchmark]: Boogie Preprocessor took 140.59ms. Allocated memory is still 192.9MB. Free memory was 136.1MB in the beginning and 127.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-11 20:46:52,900 INFO L158 Benchmark]: RCFGBuilder took 1504.18ms. Allocated memory is still 192.9MB. Free memory was 127.7MB in the beginning and 75.7MB in the end (delta: 52.0MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. [2024-09-11 20:46:52,901 INFO L158 Benchmark]: Referee took 4638.45ms. Allocated memory was 192.9MB in the beginning and 650.1MB in the end (delta: 457.2MB). Free memory was 75.7MB in the beginning and 402.9MB in the end (delta: -327.2MB). Peak memory consumption was 383.7MB. Max. memory is 16.1GB. [2024-09-11 20:46:52,904 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - ExceptionOrErrorResult: AssertionError: Either subgraph not acyclic or there is a bug de.uni_freiburg.informatik.ultimate.plugins.generator.referee: AssertionError: Either subgraph not acyclic or there is a bug: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AcyclicSubgraphMerger.(AcyclicSubgraphMerger.java:169) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 105.9MB in the end (delta: 307.3kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 891.61ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 67.6MB in the beginning and 136.1MB in the end (delta: -68.5MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 140.59ms. Allocated memory is still 192.9MB. Free memory was 136.1MB in the beginning and 127.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1504.18ms. Allocated memory is still 192.9MB. Free memory was 127.7MB in the beginning and 75.7MB in the end (delta: 52.0MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. * Referee took 4638.45ms. Allocated memory was 192.9MB in the beginning and 650.1MB in the end (delta: 457.2MB). Free memory was 75.7MB in the beginning and 402.9MB in the end (delta: -327.2MB). Peak memory consumption was 383.7MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-11 20:46:52,942 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/referee/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/referee/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/referee/data -tc /storage/repos/certificate-witnesses-artifact/referee/config/RefereeReachWitnessValidation.xml -i ../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c ../results/automizer-verification-files/SV-COMP24_unreach-call/apache-get-tag.i.p+nlh-reducer.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Bitvector.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 20:46:55,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:46:55,420 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Bitvector.epf [2024-09-11 20:46:55,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:46:55,428 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:46:55,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:46:55,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:46:55,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:46:55,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:46:55,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:46:55,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:46:55,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:46:55,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:46:55,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:46:55,477 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:46:55,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:46:55,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:46:55,478 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:46:55,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:46:55,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:46:55,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:46:55,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:46:55,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:46:55,480 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-11 20:46:55,481 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-11 20:46:55,484 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:46:55,484 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-11 20:46:55,484 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:46:55,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:46:55,485 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:46:55,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:46:55,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:46:55,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:46:55,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:46:55,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:46:55,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:46:55,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:46:55,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:46:55,487 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-11 20:46:55,488 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-11 20:46:55,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:46:55,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:46:55,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:46:55,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:46:55,490 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-11 20:46:55,491 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/certificate-witnesses-artifact/referee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-11 20:46:55,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:46:55,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:46:55,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:46:55,840 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:46:55,841 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:46:55,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c [2024-09-11 20:46:57,407 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:46:57,683 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:46:57,683 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c [2024-09-11 20:46:57,720 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/213d31da0/0ce19486173d4505933f64413286e1af/FLAG0a79d9684 [2024-09-11 20:46:57,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/213d31da0/0ce19486173d4505933f64413286e1af [2024-09-11 20:46:57,749 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-11 20:46:57,749 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-11 20:46:57,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/apache-get-tag.i.p+nlh-reducer.yml/witness-2.1.yml [2024-09-11 20:46:57,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:46:57,809 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-11 20:46:57,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:46:57,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:46:57,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:46:57,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:46:57" (1/2) ... [2024-09-11 20:46:57,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e26ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:46:57, skipping insertion in model container [2024-09-11 20:46:57,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:46:57" (1/2) ... [2024-09-11 20:46:57,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a1643af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:46:57, skipping insertion in model container [2024-09-11 20:46:57,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 11.09 08:46:57" (2/2) ... [2024-09-11 20:46:57,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e26ea6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:57, skipping insertion in model container [2024-09-11 20:46:57,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 11.09 08:46:57" (2/2) ... [2024-09-11 20:46:57,859 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-11 20:46:57,860 INFO L1541 ArrayList]: Location invariant before [L96-L283] ((1 <= main__t) && (main__t <= main__tagbuf_len)) [2024-09-11 20:46:57,860 INFO L1541 ArrayList]: Location invariant before [L132-L282] ((1 <= main__t) && (((long long) main__t + 1) <= main__tagbuf_len)) [2024-09-11 20:46:57,860 INFO L1541 ArrayList]: Location invariant before [L64-L3001] (((main__t == 0) && (1 <= main__tagbuf_len)) || ((1 <= main__t) && (((long long) main__t + 1) <= main__tagbuf_len))) [2024-09-11 20:46:57,860 INFO L1541 ArrayList]: Location invariant before [L2591-L2647] ((((long long) main__t + 1) <= main__tagbuf_len) && (59 <= main__t)) [2024-09-11 20:46:57,861 INFO L1541 ArrayList]: Location invariant before [L25-L3002] ((0 <= main__t) && (main__t <= main__tagbuf_len)) [2024-09-11 20:46:57,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:46:58,105 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[901,914] [2024-09-11 20:46:58,110 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1116,1129] [2024-09-11 20:46:58,117 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1625,1638] [2024-09-11 20:46:58,124 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1840,1853] [2024-09-11 20:46:58,126 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2157,2170] [2024-09-11 20:46:58,127 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2372,2385] [2024-09-11 20:46:58,132 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2867,2880] [2024-09-11 20:46:58,134 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3082,3095] [2024-09-11 20:46:58,137 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3384,3397] [2024-09-11 20:46:58,139 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3602,3615] [2024-09-11 20:46:58,140 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3878,3891] [2024-09-11 20:46:58,141 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4096,4109] [2024-09-11 20:46:58,143 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4582,4595] [2024-09-11 20:46:58,146 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4800,4813] [2024-09-11 20:46:58,393 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[47686,47699] [2024-09-11 20:46:58,400 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[47907,47920] [2024-09-11 20:46:58,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:46:58,440 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 20:46:58,457 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[901,914] [2024-09-11 20:46:58,458 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1116,1129] [2024-09-11 20:46:58,459 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1625,1638] [2024-09-11 20:46:58,459 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[1840,1853] [2024-09-11 20:46:58,460 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2157,2170] [2024-09-11 20:46:58,461 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2372,2385] [2024-09-11 20:46:58,462 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[2867,2880] [2024-09-11 20:46:58,462 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3082,3095] [2024-09-11 20:46:58,463 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3384,3397] [2024-09-11 20:46:58,464 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3602,3615] [2024-09-11 20:46:58,465 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[3878,3891] [2024-09-11 20:46:58,465 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4096,4109] [2024-09-11 20:46:58,467 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4582,4595] [2024-09-11 20:46:58,467 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[4800,4813] Start Parsing Local Start Parsing Local [2024-09-11 20:46:58,611 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[47686,47699] [2024-09-11 20:46:58,616 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i.p+nlh-reducer.c[47907,47920] Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-11 20:46:58,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:46:58,672 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:46:58,673 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58 WrapperNode [2024-09-11 20:46:58,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:46:58,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:46:58,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:46:58,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:46:58,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,763 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-11 20:46:58,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:46:58,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:46:58,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:46:58,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:46:58,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (1/1) ... [2024-09-11 20:46:58,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:46:58,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-11 20:46:58,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-11 20:46:58,888 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-11 20:46:58,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-11 20:46:58,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:46:58,933 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-11 20:46:58,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-11 20:46:58,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-11 20:46:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-11 20:46:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-11 20:46:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-11 20:46:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:46:58,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-11 20:46:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-11 20:46:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-11 20:46:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-11 20:46:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-11 20:46:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-11 20:46:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:46:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-09-11 20:46:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-09-11 20:46:58,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-11 20:46:59,135 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:46:59,137 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:47:00,664 INFO L? ?]: Removed 617 outVars from TransFormulas that were not future-live. [2024-09-11 20:47:00,664 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:47:00,714 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:47:00,715 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:47:00,715 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:47:00 BoogieIcfgContainer [2024-09-11 20:47:00,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:47:00,716 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-11 20:47:00,716 INFO L270 PluginConnector]: Initializing Referee... [2024-09-11 20:47:00,717 INFO L274 PluginConnector]: Referee initialized [2024-09-11 20:47:00,717 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 11.09 08:46:57" (1/4) ... [2024-09-11 20:47:00,719 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6c455f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 11.09 08:47:00, skipping insertion in model container [2024-09-11 20:47:00,719 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 11.09 08:46:57" (2/4) ... [2024-09-11 20:47:00,719 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6c455f79 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:47:00, skipping insertion in model container [2024-09-11 20:47:00,719 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:46:58" (3/4) ... [2024-09-11 20:47:00,720 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6c455f79 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:47:00, skipping insertion in model container [2024-09-11 20:47:00,720 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:47:00" (4/4) ... [2024-09-11 20:47:00,721 INFO L79 RefereeObserver]: Analyzing ICFG apache-get-tag.i.p+nlh-reducer.c [2024-09-11 20:47:00,726 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-11 20:47:00,728 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr9ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 328 edges. [2024-09-11 20:47:00,729 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr13ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 331 edges. [2024-09-11 20:47:00,730 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr3ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 5 edges. [2024-09-11 20:47:00,731 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr2ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 314 edges. [2024-09-11 20:47:00,731 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr12ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 330 edges. [2024-09-11 20:47:00,732 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr6ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 328 edges. [2024-09-11 20:47:00,733 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr16ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 330 edges. [2024-09-11 20:47:00,733 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr5ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 314 edges. [2024-09-11 20:47:00,734 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr19ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 251 edges. [2024-09-11 20:47:00,734 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr7ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 330 edges. [2024-09-11 20:47:00,735 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr1ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 313 edges. [2024-09-11 20:47:00,736 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr11ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 329 edges. [2024-09-11 20:47:00,737 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr14ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 329 edges. [2024-09-11 20:47:00,737 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr8ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 331 edges. [2024-09-11 20:47:00,739 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr18ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 243 edges. [2024-09-11 20:47:00,739 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr15ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 329 edges. [2024-09-11 20:47:00,740 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr20ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 251 edges. [2024-09-11 20:47:00,740 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 3 edges. [2024-09-11 20:47:00,741 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr17ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 331 edges. [2024-09-11 20:47:00,741 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr4ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 313 edges. [2024-09-11 20:47:00,742 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr10ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 329 edges. [2024-09-11 20:47:00,742 INFO L130 InvariantChecker]: Will check 21 loop-free subgraphs from procedure entry to error location [2024-09-11 20:47:00,980 INFO L314 BlockEncoder]: Initial Icfg 265 locations, 328 edges [2024-09-11 20:47:00,981 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:47:00,982 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:47:00,983 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:47:00,984 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:47:00,987 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:47:06,524 INFO L101 BaseMinimizeStates]: Removed 1283 edges and 261 locations by large block encoding [2024-09-11 20:47:06,527 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:47:06,528 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:47:06,528 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:47:06,529 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:47:07,511 INFO L314 BlockEncoder]: Encoded RCFG 4 locations, 8 edges [2024-09-11 20:47:07,512 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.referee has thrown an exception: java.lang.AssertionError: Either subgraph not acyclic or there is a bug at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AcyclicSubgraphMerger.(AcyclicSubgraphMerger.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.InvariantChecker.(InvariantChecker.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeStarter.(RefereeStarter.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver.finish(RefereeObserver.java:80) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-09-11 20:47:07,520 INFO L158 Benchmark]: Toolchain (without parser) took 9707.03ms. Allocated memory was 73.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 51.0MB in the beginning and 1.0GB in the end (delta: -957.8MB). Peak memory consumption was 663.0MB. Max. memory is 16.1GB. [2024-09-11 20:47:07,522 INFO L158 Benchmark]: CDTParser took 0.86ms. Allocated memory is still 52.4MB. Free memory is still 29.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:47:07,523 INFO L158 Benchmark]: Witness Parser took 0.63ms. Allocated memory is still 73.4MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:47:07,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 862.18ms. Allocated memory is still 73.4MB. Free memory was 50.8MB in the beginning and 46.2MB in the end (delta: 4.6MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2024-09-11 20:47:07,524 INFO L158 Benchmark]: Boogie Preprocessor took 178.36ms. Allocated memory is still 73.4MB. Free memory was 46.2MB in the beginning and 37.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-11 20:47:07,525 INFO L158 Benchmark]: RCFGBuilder took 1862.38ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 37.9MB in the beginning and 76.4MB in the end (delta: -38.5MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2024-09-11 20:47:07,526 INFO L158 Benchmark]: Referee took 6799.60ms. Allocated memory was 113.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 76.4MB in the beginning and 1.0GB in the end (delta: -932.4MB). Peak memory consumption was 648.5MB. Max. memory is 16.1GB. [2024-09-11 20:47:07,529 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - ExceptionOrErrorResult: AssertionError: Either subgraph not acyclic or there is a bug de.uni_freiburg.informatik.ultimate.plugins.generator.referee: AssertionError: Either subgraph not acyclic or there is a bug: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AcyclicSubgraphMerger.(AcyclicSubgraphMerger.java:169) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86ms. Allocated memory is still 52.4MB. Free memory is still 29.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.63ms. Allocated memory is still 73.4MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 862.18ms. Allocated memory is still 73.4MB. Free memory was 50.8MB in the beginning and 46.2MB in the end (delta: 4.6MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 178.36ms. Allocated memory is still 73.4MB. Free memory was 46.2MB in the beginning and 37.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1862.38ms. Allocated memory was 73.4MB in the beginning and 113.2MB in the end (delta: 39.8MB). Free memory was 37.9MB in the beginning and 76.4MB in the end (delta: -38.5MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Referee took 6799.60ms. Allocated memory was 113.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 76.4MB in the beginning and 1.0GB in the end (delta: -932.4MB). Peak memory consumption was 648.5MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-11 20:47:07,556 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Either subgraph not acyclic or there is a bug