./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/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 c783d9214012f4bff6327cd9f7b291047ddaff08 ............................................................................................................................................................................................................................................. 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 0.2.0-69874e2 [2020-12-01 16:17:30,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:17:30,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:17:30,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:17:30,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:17:30,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:17:30,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:17:30,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:17:30,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:17:30,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:17:30,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:17:30,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:17:30,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:17:30,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:17:30,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:17:30,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:17:30,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:17:30,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:17:30,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:17:30,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:17:30,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:17:30,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:17:30,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:17:30,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:17:30,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:17:30,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:17:30,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:17:30,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:17:30,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:17:30,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:17:30,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:17:30,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:17:30,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:17:30,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:17:30,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:17:30,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:17:30,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:17:30,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:17:30,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:17:30,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:17:30,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:17:30,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 16:17:30,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:17:30,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:17:30,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 16:17:30,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 16:17:30,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:17:30,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:17:30,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:17:30,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:17:30,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:17:30,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:17:30,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:17:30,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:17:30,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:17:30,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:17:30,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:17:30,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:17:30,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:17:30,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:17:30,859 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 16:17:30,859 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 16:17:30,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:17:30,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:17:30,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 16:17:30,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:17:30,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:17:30,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:17:30,861 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 16:17:30,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:17:30,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:17:30,862 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_eae1b860-2d1d-42c1-833b-aec102029565/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c783d9214012f4bff6327cd9f7b291047ddaff08 [2020-12-01 16:17:31,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:17:31,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:17:31,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:17:31,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:17:31,276 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:17:31,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2020-12-01 16:17:31,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/data/72a926340/0d1f2aab45694f49ace42632590f0d4f/FLAG6ea0ec019 [2020-12-01 16:17:32,202 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:17:32,203 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2020-12-01 16:17:32,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/data/72a926340/0d1f2aab45694f49ace42632590f0d4f/FLAG6ea0ec019 [2020-12-01 16:17:32,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/data/72a926340/0d1f2aab45694f49ace42632590f0d4f [2020-12-01 16:17:32,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:17:32,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:17:32,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:17:32,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:17:32,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:17:32,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:17:32" (1/1) ... [2020-12-01 16:17:32,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55834799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:32, skipping insertion in model container [2020-12-01 16:17:32,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:17:32" (1/1) ... [2020-12-01 16:17:32,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:17:32,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:17:33,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:17:33,060 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:17:33,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:17:33,227 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:17:33,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33 WrapperNode [2020-12-01 16:17:33,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:17:33,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:17:33,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:17:33,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:17:33,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... [2020-12-01 16:17:33,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... [2020-12-01 16:17:33,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:17:33,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:17:33,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:17:33,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:17:33,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... [2020-12-01 16:17:33,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... [2020-12-01 16:17:33,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... [2020-12-01 16:17:33,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... [2020-12-01 16:17:33,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... [2020-12-01 16:17:33,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... [2020-12-01 16:17:33,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... [2020-12-01 16:17:33,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:17:33,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:17:33,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:17:33,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:17:33,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:17:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/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 [2020-12-01 16:17:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:17:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:17:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:17:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:17:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:17:33,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:17:33,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:17:33,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:17:33,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:17:33,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:17:34,278 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:17:34,278 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 16:17:34,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:17:34 BoogieIcfgContainer [2020-12-01 16:17:34,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:17:34,283 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 16:17:34,283 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 16:17:34,297 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 16:17:34,298 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:17:34" (1/1) ... [2020-12-01 16:17:34,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:17:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:17:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 24 states and 38 transitions. [2020-12-01 16:17:34,360 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2020-12-01 16:17:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 16:17:34,364 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:17:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:17:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:17:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:17:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 22 states and 29 transitions. [2020-12-01 16:17:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2020-12-01 16:17:34,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 16:17:34,638 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:17:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:17:34,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:17:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:17:34,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:17:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:17:34,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:17:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:17:34,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:17:35,067 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2020-12-01 16:17:35,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 04:17:35 ImpRootNode [2020-12-01 16:17:35,122 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 16:17:35,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:17:35,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:17:35,123 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:17:35,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:17:34" (3/4) ... [2020-12-01 16:17:35,126 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 16:17:35,198 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eae1b860-2d1d-42c1-833b-aec102029565/bin/ukojak/witness.graphml [2020-12-01 16:17:35,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:17:35,204 INFO L168 Benchmark]: Toolchain (without parser) took 2724.97 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 48.3 MB in the beginning and 60.3 MB in the end (delta: -12.0 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:17:35,206 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 83.9 MB. Free memory was 56.8 MB in the beginning and 56.7 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:17:35,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.26 ms. Allocated memory is still 83.9 MB. Free memory was 48.1 MB in the beginning and 49.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-12-01 16:17:35,218 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.05 ms. Allocated memory is still 83.9 MB. Free memory was 49.1 MB in the beginning and 47.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:17:35,220 INFO L168 Benchmark]: Boogie Preprocessor took 62.01 ms. Allocated memory is still 83.9 MB. Free memory was 47.2 MB in the beginning and 45.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:17:35,221 INFO L168 Benchmark]: RCFGBuilder took 864.55 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 45.5 MB in the beginning and 56.5 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:17:35,221 INFO L168 Benchmark]: CodeCheck took 839.31 ms. Allocated memory is still 100.7 MB. Free memory was 56.5 MB in the beginning and 62.4 MB in the end (delta: -5.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:17:35,224 INFO L168 Benchmark]: Witness Printer took 75.80 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 60.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:17:35,235 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, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L999] SLL* head = malloc(sizeof(SLL)); [L1000] head->next = ((void*)0) [L1001] head->data = 0 [L1003] SLL* x = head; [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1016] COND TRUE __VERIFIER_nondet_int() [L1017] x = malloc(sizeof(SLL)) [L1018] x->data = 1 [L1019] x->next = head [L1020] head = x [L1040] x = head [L1043] EXPR x->data [L1043] COND FALSE !(x->data != 1) [L1049] EXPR x->next [L1049] x = x->next [L1050] COND TRUE \read(*x) [L1052] EXPR x->data [L1052] COND TRUE x->data != 1 [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-simple-white-blue-2.c", 16, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 83.9 MB. Free memory was 56.8 MB in the beginning and 56.7 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 750.26 ms. Allocated memory is still 83.9 MB. Free memory was 48.1 MB in the beginning and 49.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 110.05 ms. Allocated memory is still 83.9 MB. Free memory was 49.1 MB in the beginning and 47.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.01 ms. Allocated memory is still 83.9 MB. Free memory was 47.2 MB in the beginning and 45.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 864.55 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 45.5 MB in the beginning and 56.5 MB in the end (delta: -11.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * CodeCheck took 839.31 ms. Allocated memory is still 100.7 MB. Free memory was 56.5 MB in the beginning and 62.4 MB in the end (delta: -5.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 75.80 ms. Allocated memory is still 100.7 MB. Free memory was 62.4 MB in the beginning and 60.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...