./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak --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 3589167bbf5d7f5cd80f4f92aa27b7dbe19a0217 .................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-30 00:51:46,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:51:46,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:51:46,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:51:46,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:51:46,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:51:46,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:51:46,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:51:46,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:51:46,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:51:46,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:51:46,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:51:46,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:51:46,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:51:46,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:51:46,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:51:46,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:51:46,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:51:46,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:51:46,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:51:46,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:51:46,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:51:46,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:51:46,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:51:46,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:51:46,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:51:46,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:51:46,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:51:46,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:51:46,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:51:46,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:51:46,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:51:46,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:51:46,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:51:46,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:51:46,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:51:46,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:51:46,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:51:46,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:51:46,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:51:46,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:51:46,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-30 00:51:46,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:51:46,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:51:46,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 00:51:46,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-30 00:51:46,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:51:46,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:51:46,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:51:46,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:51:46,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:51:46,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:51:46,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:51:46,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:51:46,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:51:46,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:51:46,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:51:46,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:51:46,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:51:46,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:51:46,473 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-30 00:51:46,473 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-30 00:51:46,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:51:46,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:51:46,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-30 00:51:46,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:51:46,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:51:46,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:51:46,475 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-30 00:51:46,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:51:46,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:51:46,476 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-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3589167bbf5d7f5cd80f4f92aa27b7dbe19a0217 [2020-11-30 00:51:46,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:51:46,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:51:46,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:51:46,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:51:46,802 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:51:46,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2020-11-30 00:51:46,897 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/data/2bf409c9a/dae5667133234f8abd696bf4501d68f7/FLAG2bc6613fb [2020-11-30 00:51:47,485 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:51:47,486 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2020-11-30 00:51:47,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/data/2bf409c9a/dae5667133234f8abd696bf4501d68f7/FLAG2bc6613fb [2020-11-30 00:51:47,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/data/2bf409c9a/dae5667133234f8abd696bf4501d68f7 [2020-11-30 00:51:47,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:51:47,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:51:47,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:51:47,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:51:47,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:51:47,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:51:47" (1/1) ... [2020-11-30 00:51:47,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75703be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:47, skipping insertion in model container [2020-11-30 00:51:47,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:51:47" (1/1) ... [2020-11-30 00:51:47,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:51:47,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:51:48,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:51:48,244 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:51:48,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:51:48,339 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:51:48,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48 WrapperNode [2020-11-30 00:51:48,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:51:48,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:51:48,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:51:48,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:51:48,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... [2020-11-30 00:51:48,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... [2020-11-30 00:51:48,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:51:48,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:51:48,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:51:48,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:51:48,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... [2020-11-30 00:51:48,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... [2020-11-30 00:51:48,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... [2020-11-30 00:51:48,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... [2020-11-30 00:51:48,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... [2020-11-30 00:51:48,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... [2020-11-30 00:51:48,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... [2020-11-30 00:51:48,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:51:48,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:51:48,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:51:48,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:51:48,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/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 [2020-11-30 00:51:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:51:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 00:51:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:51:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 00:51:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:51:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:51:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:51:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:51:49,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:51:49,056 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 00:51:49,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:51:49 BoogieIcfgContainer [2020-11-30 00:51:49,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:51:49,060 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-30 00:51:49,060 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-30 00:51:49,073 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-30 00:51:49,073 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:51:49" (1/1) ... [2020-11-30 00:51:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:51:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:51:49,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 16 states and 23 transitions. [2020-11-30 00:51:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 23 transitions. [2020-11-30 00:51:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:51:49,142 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:51:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:51:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2020-11-30 00:51:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-11-30 00:51:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:51:49,316 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:51:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:51:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 27 transitions. [2020-11-30 00:51:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2020-11-30 00:51:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:51:49,516 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:51:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:51:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 20 states and 30 transitions. [2020-11-30 00:51:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 30 transitions. [2020-11-30 00:51:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:51:49,790 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:51:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:51:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 19 states and 26 transitions. [2020-11-30 00:51:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-11-30 00:51:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:51:49,996 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:51:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:51:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:51:50,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 21 states and 28 transitions. [2020-11-30 00:51:50,342 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2020-11-30 00:51:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:51:50,343 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:51:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:51:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 30 transitions. [2020-11-30 00:51:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-11-30 00:51:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:51:51,190 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:51:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:51:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:51:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 24 states and 31 transitions. [2020-11-30 00:51:51,786 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2020-11-30 00:51:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:51:51,787 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:51:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 00:51:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:51:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 35 states and 51 transitions. [2020-11-30 00:51:54,296 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2020-11-30 00:51:54,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:51:54,297 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:51:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:51:54,334 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:51:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:51:54,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:51:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:51:54,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:51:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:51:54,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:51:54,531 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 9 iterations. [2020-11-30 00:51:54,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 30.11 12:51:54 ImpRootNode [2020-11-30 00:51:54,605 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-30 00:51:54,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:51:54,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:51:54,606 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:51:54,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:51:49" (3/4) ... [2020-11-30 00:51:54,608 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:51:54,701 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5baafa21-2ba9-4f7b-9e24-a94b8d79184b/bin/ukojak/witness.graphml [2020-11-30 00:51:54,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:51:54,704 INFO L168 Benchmark]: Toolchain (without parser) took 6865.41 ms. Allocated memory was 77.6 MB in the beginning and 142.6 MB in the end (delta: 65.0 MB). Free memory was 43.5 MB in the beginning and 51.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:54,705 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 50.6 MB in the end (delta: 30.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:51:54,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 499.90 ms. Allocated memory was 77.6 MB in the beginning and 96.5 MB in the end (delta: 18.9 MB). Free memory was 43.4 MB in the beginning and 62.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:54,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.65 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 59.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:54,707 INFO L168 Benchmark]: Boogie Preprocessor took 60.77 ms. Allocated memory is still 96.5 MB. Free memory was 59.9 MB in the beginning and 58.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:51:54,708 INFO L168 Benchmark]: RCFGBuilder took 608.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 73.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:54,709 INFO L168 Benchmark]: CodeCheck took 5545.39 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 73.5 MB in the beginning and 54.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 65.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:54,710 INFO L168 Benchmark]: Witness Printer took 96.30 ms. Allocated memory is still 142.6 MB. Free memory was 54.2 MB in the beginning and 51.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:54,715 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, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2048 SDtfs, 742 SDslu, 384 SDs, 0 SdLazy, 4786 SolverSat, 1460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 819 GetRequests, 710 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3507 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 2903 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 16/29 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: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L603] int len = 2; [L604] len < 32 && __VERIFIER_nondet_int() [L604] len < 32 && __VERIFIER_nondet_int() [L604] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L575] SLL head = ((void *)0); [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND FALSE !(len > 0) [L585] return head; [L607] SLL s = sll_create(len + 1); [L588] int len = 0; [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND FALSE !(\read(head)) [L593] return len; [L608] COND TRUE len != sll_length(s) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_length_check-1.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 77.6 MB. Free memory was 50.6 MB in the beginning and 50.6 MB in the end (delta: 30.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 499.90 ms. Allocated memory was 77.6 MB in the beginning and 96.5 MB in the end (delta: 18.9 MB). Free memory was 43.4 MB in the beginning and 62.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.65 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 59.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.77 ms. Allocated memory is still 96.5 MB. Free memory was 59.9 MB in the beginning and 58.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 608.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 73.5 MB in the end (delta: -14.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * CodeCheck took 5545.39 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 73.5 MB in the beginning and 54.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 65.2 MB. Max. memory is 16.1 GB. * Witness Printer took 96.30 ms. Allocated memory is still 142.6 MB. Free memory was 54.2 MB in the beginning and 51.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...