./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ --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 f91abcd8d9f4c4a9bb166bca3090e9f421fd2afed3c0226bce3d2e7c0b6ce95e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:28:55,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:28:55,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:28:55,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:28:55,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:28:55,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:28:55,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:28:55,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:28:55,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:28:55,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:28:55,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:28:55,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:28:55,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:28:55,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:28:55,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:28:55,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:28:55,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:28:55,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:28:55,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:28:55,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:28:55,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:28:55,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:28:55,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:28:55,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:28:55,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:28:55,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:28:55,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:28:55,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:28:55,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:28:55,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:28:55,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:28:55,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:28:55,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:28:55,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:28:55,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:28:55,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:28:55,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:28:55,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:28:55,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:28:55,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:28:55,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:28:55,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 01:28:55,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:28:55,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:28:55,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:28:55,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 01:28:55,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:28:55,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:28:55,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:28:55,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:28:55,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:28:55,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:28:55,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:28:55,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:28:55,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:28:55,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:28:55,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:28:55,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:28:55,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:28:55,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:28:55,533 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:28:55,534 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:28:55,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:28:55,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:28:55,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:28:55,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:28:55,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:28:55,535 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:28:55,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:28:55,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:28:55,536 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_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91abcd8d9f4c4a9bb166bca3090e9f421fd2afed3c0226bce3d2e7c0b6ce95e [2021-11-23 01:28:55,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:28:55,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:28:55,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:28:55,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:28:55,897 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:28:55,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/forester-heap/sll-circular-2.i [2021-11-23 01:28:55,992 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/data/425caa99a/95d07a4ed8064e319a34f48a9a3060d2/FLAG658d5c2fc [2021-11-23 01:28:56,692 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:28:56,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/sv-benchmarks/c/forester-heap/sll-circular-2.i [2021-11-23 01:28:56,713 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/data/425caa99a/95d07a4ed8064e319a34f48a9a3060d2/FLAG658d5c2fc [2021-11-23 01:28:56,944 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/data/425caa99a/95d07a4ed8064e319a34f48a9a3060d2 [2021-11-23 01:28:56,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:28:56,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:28:56,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:28:56,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:28:56,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:28:56,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:28:56" (1/1) ... [2021-11-23 01:28:56,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6422ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:56, skipping insertion in model container [2021-11-23 01:28:56,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:28:56" (1/1) ... [2021-11-23 01:28:56,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:28:57,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:28:57,399 WARN L230 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_3b4db526-4a7e-4d3f-9b22-b02f03c447df/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2021-11-23 01:28:57,405 WARN L230 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_3b4db526-4a7e-4d3f-9b22-b02f03c447df/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2021-11-23 01:28:57,407 WARN L230 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_3b4db526-4a7e-4d3f-9b22-b02f03c447df/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2021-11-23 01:28:57,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:28:57,425 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:28:57,491 WARN L230 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_3b4db526-4a7e-4d3f-9b22-b02f03c447df/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2021-11-23 01:28:57,513 WARN L230 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_3b4db526-4a7e-4d3f-9b22-b02f03c447df/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2021-11-23 01:28:57,519 WARN L230 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_3b4db526-4a7e-4d3f-9b22-b02f03c447df/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2021-11-23 01:28:57,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:28:57,561 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:28:57,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57 WrapperNode [2021-11-23 01:28:57,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:28:57,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:28:57,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:28:57,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:28:57,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,649 INFO L137 Inliner]: procedures = 119, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 113 [2021-11-23 01:28:57,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:28:57,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:28:57,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:28:57,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:28:57,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:28:57,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:28:57,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:28:57,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:28:57,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:57" (1/1) ... [2021-11-23 01:28:57,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:28:57,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:28:57,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:28:57,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:28:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:28:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:28:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:28:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:28:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:28:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:28:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:28:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:28:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:28:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:28:58,008 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:28:58,012 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:28:58,301 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:28:58,343 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:28:58,343 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-23 01:28:58,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:58 BoogieIcfgContainer [2021-11-23 01:28:58,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:28:58,347 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:28:58,347 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:28:58,357 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:28:58,357 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:58" (1/1) ... [2021-11-23 01:28:58,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:28:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 29 states and 46 transitions. [2021-11-23 01:28:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2021-11-23 01:28:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 01:28:58,426 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:58,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:28:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2021-11-23 01:28:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2021-11-23 01:28:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 01:28:58,690 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:58,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:28:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 33 states and 49 transitions. [2021-11-23 01:28:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2021-11-23 01:28:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 01:28:59,030 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:59,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:28:59,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 35 states and 51 transitions. [2021-11-23 01:28:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2021-11-23 01:28:59,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 01:28:59,178 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:59,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:28:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 35 states and 50 transitions. [2021-11-23 01:28:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2021-11-23 01:28:59,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 01:28:59,273 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:59,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:28:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 39 states and 57 transitions. [2021-11-23 01:28:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2021-11-23 01:28:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 01:28:59,552 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:59,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:28:59,617 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:28:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:28:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:28:59,733 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:28:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:28:59,783 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2021-11-23 01:28:59,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:28:59 ImpRootNode [2021-11-23 01:28:59,824 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:28:59,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:28:59,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:28:59,825 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:28:59,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:58" (3/4) ... [2021-11-23 01:28:59,828 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 01:28:59,879 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:28:59,879 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:28:59,880 INFO L158 Benchmark]: Toolchain (without parser) took 2932.27ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.8MB in the beginning and 49.6MB in the end (delta: 8.2MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2021-11-23 01:28:59,881 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 65.9MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:28:59,882 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.51ms. Allocated memory is still 92.3MB. Free memory was 57.5MB in the beginning and 61.3MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:28:59,883 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.74ms. Allocated memory is still 92.3MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:28:59,884 INFO L158 Benchmark]: Boogie Preprocessor took 57.32ms. Allocated memory is still 92.3MB. Free memory was 59.2MB in the beginning and 57.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:28:59,885 INFO L158 Benchmark]: RCFGBuilder took 637.42ms. Allocated memory is still 92.3MB. Free memory was 57.6MB in the beginning and 44.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 01:28:59,886 INFO L158 Benchmark]: CodeCheck took 1477.21ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 44.1MB in the beginning and 51.7MB in the end (delta: -7.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2021-11-23 01:28:59,887 INFO L158 Benchmark]: Witness Printer took 54.65ms. Allocated memory is still 111.1MB. Free memory was 51.7MB in the beginning and 49.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:28:59,892 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: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 147 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 75 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 113 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: 1032]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int state = 1; VAL [head={-1:0}, state=1, x={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state [L1027] EXPR head->next [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, state=1, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, state=1, x={-1:0}, x->data=1] [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] EXPR x->data [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] reach_error() VAL [head={-1:0}, state=1, x={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 65.9MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 601.51ms. Allocated memory is still 92.3MB. Free memory was 57.5MB in the beginning and 61.3MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.74ms. Allocated memory is still 92.3MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.32ms. Allocated memory is still 92.3MB. Free memory was 59.2MB in the beginning and 57.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 637.42ms. Allocated memory is still 92.3MB. Free memory was 57.6MB in the beginning and 44.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 1477.21ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 44.1MB in the beginning and 51.7MB in the end (delta: -7.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Witness Printer took 54.65ms. Allocated memory is still 111.1MB. Free memory was 51.7MB in the beginning and 49.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 01:28:59,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b4db526-4a7e-4d3f-9b22-b02f03c447df/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE