./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 ..................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 03:30:47,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 03:30:47,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 03:30:47,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 03:30:47,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 03:30:47,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 03:30:47,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 03:30:47,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 03:30:47,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 03:30:47,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 03:30:47,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 03:30:47,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 03:30:47,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 03:30:47,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 03:30:47,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 03:30:47,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 03:30:47,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 03:30:47,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 03:30:47,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 03:30:47,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 03:30:47,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 03:30:47,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 03:30:47,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 03:30:47,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 03:30:47,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 03:30:47,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 03:30:47,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 03:30:47,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 03:30:47,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 03:30:47,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 03:30:47,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 03:30:47,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 03:30:47,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 03:30:47,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 03:30:47,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 03:30:47,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 03:30:47,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 03:30:47,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 03:30:47,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 03:30:47,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 03:30:47,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 03:30:47,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-29 03:30:47,483 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 03:30:47,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 03:30:47,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 03:30:47,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-29 03:30:47,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 03:30:47,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 03:30:47,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 03:30:47,486 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 03:30:47,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 03:30:47,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 03:30:47,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 03:30:47,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 03:30:47,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 03:30:47,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 03:30:47,488 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 03:30:47,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 03:30:47,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 03:30:47,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 03:30:47,489 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-29 03:30:47,489 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-29 03:30:47,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 03:30:47,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 03:30:47,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 03:30:47,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 03:30:47,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 03:30:47,491 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-29 03:30:47,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 03:30:47,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 03:30:47,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 [2021-10-29 03:30:47,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 03:30:47,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 03:30:47,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 03:30:47,796 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 03:30:47,797 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 03:30:47,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/../../sv-benchmarks/c/forester-heap/dll-circular-1.i [2021-10-29 03:30:47,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/data/5bed5672a/7484a3b565f1424190663c2c9bbe42a9/FLAG5747cc60f [2021-10-29 03:30:48,511 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 03:30:48,511 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/sv-benchmarks/c/forester-heap/dll-circular-1.i [2021-10-29 03:30:48,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/data/5bed5672a/7484a3b565f1424190663c2c9bbe42a9/FLAG5747cc60f [2021-10-29 03:30:48,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/data/5bed5672a/7484a3b565f1424190663c2c9bbe42a9 [2021-10-29 03:30:48,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 03:30:48,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 03:30:48,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 03:30:48,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 03:30:48,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 03:30:48,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:48" (1/1) ... [2021-10-29 03:30:48,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df07e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:48, skipping insertion in model container [2021-10-29 03:30:48,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:30:48" (1/1) ... [2021-10-29 03:30:48,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 03:30:48,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 03:30:49,248 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2021-10-29 03:30:49,256 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2021-10-29 03:30:49,260 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2021-10-29 03:30:49,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 03:30:49,282 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 03:30:49,341 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2021-10-29 03:30:49,344 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2021-10-29 03:30:49,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2021-10-29 03:30:49,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 03:30:49,385 INFO L208 MainTranslator]: Completed translation [2021-10-29 03:30:49,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49 WrapperNode [2021-10-29 03:30:49,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 03:30:49,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 03:30:49,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 03:30:49,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 03:30:49,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 03:30:49,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 03:30:49,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 03:30:49,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 03:30:49,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 03:30:49,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 03:30:49,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 03:30:49,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 03:30:49,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:30:49" (1/1) ... [2021-10-29 03:30:49,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 03:30:49,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/z3 [2021-10-29 03:30:49,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-29 03:30:49,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-29 03:30:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 03:30:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 03:30:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 03:30:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 03:30:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 03:30:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 03:30:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 03:30:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 03:30:49,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 03:30:49,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 03:30:50,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 03:30:50,036 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-29 03:30:50,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:50 BoogieIcfgContainer [2021-10-29 03:30:50,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 03:30:50,040 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-29 03:30:50,046 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-29 03:30:50,057 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-29 03:30:50,058 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:50" (1/1) ... [2021-10-29 03:30:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 03:30:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:30:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 29 states and 46 transitions. [2021-10-29 03:30:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2021-10-29 03:30:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 03:30:50,124 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:30:50,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:30:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:30:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 03:30:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:30:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2021-10-29 03:30:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2021-10-29 03:30:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 03:30:50,333 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:30:50,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:30:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:30:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 03:30:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:30:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 33 states and 49 transitions. [2021-10-29 03:30:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2021-10-29 03:30:50,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 03:30:50,624 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:30:50,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:30:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:30:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 03:30:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:30:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 37 states and 55 transitions. [2021-10-29 03:30:50,947 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2021-10-29 03:30:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 03:30:50,950 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:30:50,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:30:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:30:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 03:30:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:30:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 37 states and 54 transitions. [2021-10-29 03:30:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2021-10-29 03:30:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 03:30:51,060 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:30:51,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:30:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:30:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 03:30:51,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:30:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 41 states and 62 transitions. [2021-10-29 03:30:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 62 transitions. [2021-10-29 03:30:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 03:30:51,356 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:30:51,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:30:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:30:51,383 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 03:30:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:30:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:30:51,492 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 03:30:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:30:51,531 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2021-10-29 03:30:51,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.10 03:30:51 ImpRootNode [2021-10-29 03:30:51,559 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-29 03:30:51,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 03:30:51,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 03:30:51,560 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 03:30:51,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:30:50" (3/4) ... [2021-10-29 03:30:51,562 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 03:30:51,616 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/witness.graphml [2021-10-29 03:30:51,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 03:30:51,619 INFO L168 Benchmark]: Toolchain (without parser) took 2791.51 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 80.2 MB in the beginning and 103.3 MB in the end (delta: -23.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:30:51,620 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 113.2 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:30:51,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 558.20 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 79.5 MB in the end (delta: 379.6 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 03:30:51,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.89 ms. Allocated memory is still 113.2 MB. Free memory was 79.5 MB in the beginning and 77.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:30:51,625 INFO L168 Benchmark]: Boogie Preprocessor took 39.20 ms. Allocated memory is still 113.2 MB. Free memory was 77.4 MB in the beginning and 75.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:30:51,626 INFO L168 Benchmark]: RCFGBuilder took 565.80 ms. Allocated memory is still 113.2 MB. Free memory was 75.8 MB in the beginning and 60.2 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 03:30:51,628 INFO L168 Benchmark]: CodeCheck took 1518.76 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 59.8 MB in the beginning and 105.4 MB in the end (delta: -45.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:30:51,628 INFO L168 Benchmark]: Witness Printer took 58.02 ms. Allocated memory is still 136.3 MB. Free memory was 105.4 MB in the beginning and 103.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:30:51,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 29 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 256 SDtfs, 136 SDslu, 284 SDs, 0 SdLazy, 302 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1034]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = head [L999] head->data = 0 [L1001] SLL* x = head; [L1002] int state = 1; [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1027] x->data = state [L1029] EXPR head->next [L1029] x = head->next [L1030] COND FALSE !(!(((void*)0) != x)) [L1032] EXPR x->data [L1032] COND TRUE x->data != 0 [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] EXPR x->data [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1034] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 113.2 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 558.20 ms. Allocated memory is still 113.2 MB. Free memory was 79.9 MB in the beginning and 79.5 MB in the end (delta: 379.6 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.89 ms. Allocated memory is still 113.2 MB. Free memory was 79.5 MB in the beginning and 77.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.20 ms. Allocated memory is still 113.2 MB. Free memory was 77.4 MB in the beginning and 75.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 565.80 ms. Allocated memory is still 113.2 MB. Free memory was 75.8 MB in the beginning and 60.2 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * CodeCheck took 1518.76 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 59.8 MB in the beginning and 105.4 MB in the end (delta: -45.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 58.02 ms. Allocated memory is still 136.3 MB. Free memory was 105.4 MB in the beginning and 103.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! [2021-10-29 03:30:51,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a518505d-b015-417c-a8e3-ae1795846702/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...