./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b651d63eb42259dfd3a213a6671e4c58ee528ad0 .............................................................................................................................................................................................................................................................. 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 0.1.24-678e011 [2019-11-20 02:40:13,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:40:13,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:40:13,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:40:13,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:40:13,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:40:13,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:40:13,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:40:13,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:40:13,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:40:13,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:40:13,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:40:13,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:40:13,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:40:13,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:40:13,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:40:13,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:40:13,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:40:13,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:40:13,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:40:13,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:40:13,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:40:13,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:40:13,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:40:13,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:40:13,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:40:13,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:40:13,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:40:13,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:40:13,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:40:13,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:40:13,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:40:13,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:40:13,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:40:13,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:40:13,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:40:13,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:40:13,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:40:13,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:40:13,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:40:13,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:40:13,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-20 02:40:13,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:40:13,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:40:13,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-20 02:40:13,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-20 02:40:13,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:40:13,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:40:13,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:40:13,480 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:40:13,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:40:13,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:40:13,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:40:13,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 02:40:13,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:40:13,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 02:40:13,482 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:40:13,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:40:13,482 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:40:13,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 02:40:13,483 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-20 02:40:13,483 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-20 02:40:13,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:40:13,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:40:13,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 02:40:13,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:40:13,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:40:13,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 02:40:13,485 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-20 02:40:13,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 02:40:13,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 02:40:13,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak 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(__VERIFIER_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 -> b651d63eb42259dfd3a213a6671e4c58ee528ad0 [2019-11-20 02:40:13,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:40:13,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:40:13,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:40:13,672 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:40:13,672 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:40:13,673 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/../../sv-benchmarks/c/forester-heap/sll-circular-2.i [2019-11-20 02:40:13,733 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/data/4e64390e1/bf9c065f07b34d4bb434bf46c20d495c/FLAGae4488b5f [2019-11-20 02:40:14,218 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:40:14,219 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/sv-benchmarks/c/forester-heap/sll-circular-2.i [2019-11-20 02:40:14,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/data/4e64390e1/bf9c065f07b34d4bb434bf46c20d495c/FLAGae4488b5f [2019-11-20 02:40:14,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/data/4e64390e1/bf9c065f07b34d4bb434bf46c20d495c [2019-11-20 02:40:14,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:40:14,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:40:14,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:40:14,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:40:14,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:40:14,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:40:14" (1/1) ... [2019-11-20 02:40:14,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4b0699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:14, skipping insertion in model container [2019-11-20 02:40:14,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:40:14" (1/1) ... [2019-11-20 02:40:14,574 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:40:14,630 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:40:15,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:40:15,124 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:40:15,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:40:15,263 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:40:15,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15 WrapperNode [2019-11-20 02:40:15,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:40:15,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:40:15,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:40:15,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:40:15,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... [2019-11-20 02:40:15,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... [2019-11-20 02:40:15,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:40:15,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:40:15,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:40:15,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:40:15,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... [2019-11-20 02:40:15,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... [2019-11-20 02:40:15,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... [2019-11-20 02:40:15,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... [2019-11-20 02:40:15,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... [2019-11-20 02:40:15,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... [2019-11-20 02:40:15,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... [2019-11-20 02:40:15,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:40:15,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:40:15,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:40:15,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:40:15,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:40:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 02:40:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 02:40:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 02:40:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 02:40:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 02:40:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 02:40:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 02:40:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:40:15,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:40:16,012 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:40:16,012 INFO L285 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-20 02:40:16,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:40:16 BoogieIcfgContainer [2019-11-20 02:40:16,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:40:16,014 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-20 02:40:16,014 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-20 02:40:16,026 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-20 02:40:16,027 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:40:16" (1/1) ... [2019-11-20 02:40:16,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:40:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 02:40:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 29 states and 46 transitions. [2019-11-20 02:40:16,084 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 46 transitions. [2019-11-20 02:40:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 02:40:16,089 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 02:40:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:40:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:40:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 02:40:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 29 states and 41 transitions. [2019-11-20 02:40:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2019-11-20 02:40:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 02:40:16,247 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 02:40:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:40:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:40:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 02:40:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 33 states and 49 transitions. [2019-11-20 02:40:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2019-11-20 02:40:16,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 02:40:16,482 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 02:40:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:40:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:40:16,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 02:40:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 35 states and 51 transitions. [2019-11-20 02:40:16,581 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2019-11-20 02:40:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 02:40:16,585 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 02:40:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:40:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:40:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 02:40:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 35 states and 50 transitions. [2019-11-20 02:40:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-11-20 02:40:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 02:40:16,677 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 02:40:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:40:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:40:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 02:40:16,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 39 states and 57 transitions. [2019-11-20 02:40:16,983 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2019-11-20 02:40:16,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 02:40:16,983 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 02:40:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:40:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:40:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:40:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:40:17,258 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2019-11-20 02:40:17,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 02:40:17 ImpRootNode [2019-11-20 02:40:17,304 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-20 02:40:17,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:40:17,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:40:17,306 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:40:17,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:40:16" (3/4) ... [2019-11-20 02:40:17,310 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 02:40:17,386 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5220c321-4ad1-4e68-9f97-cafb02679b2b/bin/ukojak/witness.graphml [2019-11-20 02:40:17,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:40:17,389 INFO L168 Benchmark]: Toolchain (without parser) took 2835.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -81.1 MB). Peak memory consumption was 70.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:17,390 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:40:17,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:17,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:40:17,397 INFO L168 Benchmark]: Boogie Preprocessor took 69.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:17,397 INFO L168 Benchmark]: RCFGBuilder took 592.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:17,398 INFO L168 Benchmark]: CodeCheck took 1290.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:17,398 INFO L168 Benchmark]: Witness Printer took 81.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:40:17,401 INFO L335 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. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 256 SDtfs, 120 SDslu, 220 SDs, 0 SdLazy, 266 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 617 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: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = head [L987] head->data = 0 [L989] SLL* x = head; [L990] int state = 1; [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1014] x->data = state [L1016] EXPR head->next [L1016] x = head->next [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND TRUE x->data != 0 [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] EXPR x->data [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1021] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 711.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -194.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 86.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 69.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 592.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * CodeCheck took 1290.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. * Witness Printer took 81.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...