./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/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_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/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 0.2.0-69874e2 [2020-12-01 18:05:55,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:05:55,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:05:55,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:05:55,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:05:55,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:05:55,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:05:55,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:05:55,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:05:55,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:05:55,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:05:55,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:05:55,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:05:55,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:05:55,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:05:55,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:05:55,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:05:55,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:05:55,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:05:55,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:05:55,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:05:55,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:05:55,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:05:55,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:05:55,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:05:55,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:05:55,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:05:55,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:05:55,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:05:55,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:05:55,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:05:55,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:05:55,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:05:55,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:05:55,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:05:55,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:05:55,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:05:55,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:05:55,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:05:55,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:05:55,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:05:55,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 18:05:55,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:05:55,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:05:55,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:05:55,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:05:55,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:05:55,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:05:55,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:05:55,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:05:55,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:05:55,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:05:55,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:05:55,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:05:55,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:05:55,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:05:55,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:05:55,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:05:55,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:05:55,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:05:55,538 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:05:55,539 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:05:55,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:05:55,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:05:55,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:05:55,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:05:55,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:05:55,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:05:55,540 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:05:55,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:05:55,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:05:55,543 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_4adb98c5-91b5-4959-8fc1-e39b66a86418/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3589167bbf5d7f5cd80f4f92aa27b7dbe19a0217 [2020-12-01 18:05:55,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:05:55,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:05:55,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:05:55,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:05:55,956 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:05:55,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2020-12-01 18:05:56,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/data/9c5c2f2a3/301bdc1f135349cfb2aa1dc6785fbc4d/FLAGb0c64e999 [2020-12-01 18:05:56,817 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:05:56,818 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2020-12-01 18:05:56,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/data/9c5c2f2a3/301bdc1f135349cfb2aa1dc6785fbc4d/FLAGb0c64e999 [2020-12-01 18:05:57,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/data/9c5c2f2a3/301bdc1f135349cfb2aa1dc6785fbc4d [2020-12-01 18:05:57,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:05:57,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:05:57,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:05:57,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:05:57,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:05:57,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:57,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7153e4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57, skipping insertion in model container [2020-12-01 18:05:57,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:57,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:05:57,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:05:57,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:05:57,716 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:05:57,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:05:57,866 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:05:57,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57 WrapperNode [2020-12-01 18:05:57,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:05:57,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:05:57,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:05:57,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:05:57,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:57,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:57,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:05:57,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:05:57,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:05:57,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:05:57,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:57,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:57,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:57,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:57,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:58,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:58,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... [2020-12-01 18:05:58,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:05:58,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:05:58,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:05:58,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:05:58,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:05:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/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 18:05:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 18:05:58,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 18:05:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 18:05:58,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 18:05:58,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 18:05:58,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 18:05:58,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:05:58,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:05:58,798 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:05:58,798 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 18:05:58,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:05:58 BoogieIcfgContainer [2020-12-01 18:05:58,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:05:58,802 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:05:58,803 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:05:58,818 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:05:58,818 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:05:58" (1/1) ... [2020-12-01 18:05:58,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:05:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 16 states and 23 transitions. [2020-12-01 18:05:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 23 transitions. [2020-12-01 18:05:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 18:05:58,895 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:59,048 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 18:05:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2020-12-01 18:05:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-12-01 18:05:59,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 18:05:59,061 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:59,189 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 18:05:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 19 states and 26 transitions. [2020-12-01 18:05:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-12-01 18:05:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 18:05:59,324 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:05:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:05:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 20 states and 29 transitions. [2020-12-01 18:05:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2020-12-01 18:05:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 18:05:59,745 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:05:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:05:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:06:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2020-12-01 18:06:00,181 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2020-12-01 18:06:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 18:06:00,184 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:06:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 18:06:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 22 states and 29 transitions. [2020-12-01 18:06:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2020-12-01 18:06:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 18:06:00,698 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:06:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:06:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:01,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 25 states and 34 transitions. [2020-12-01 18:06:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2020-12-01 18:06:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 18:06:01,482 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:06:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 18:06:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 25 states and 33 transitions. [2020-12-01 18:06:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-12-01 18:06:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 18:06:02,206 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:06:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 18:06:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 27 states and 35 transitions. [2020-12-01 18:06:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-12-01 18:06:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 18:06:02,986 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:06:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-01 18:06:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 33 states and 49 transitions. [2020-12-01 18:06:04,972 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2020-12-01 18:06:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 18:06:04,973 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:06:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 18:06:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:06:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 52 transitions. [2020-12-01 18:06:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2020-12-01 18:06:05,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 18:06:05,638 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:06:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:06:05,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:06:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:06:05,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:06:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:06:05,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:06:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:06:05,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:06:06,338 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2020-12-01 18:06:06,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:06:06 ImpRootNode [2020-12-01 18:06:06,381 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:06:06,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:06:06,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:06:06,382 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:06:06,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:05:58" (3/4) ... [2020-12-01 18:06:06,386 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 18:06:06,456 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4adb98c5-91b5-4959-8fc1-e39b66a86418/bin/ukojak/witness.graphml [2020-12-01 18:06:06,457 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:06:06,459 INFO L168 Benchmark]: Toolchain (without parser) took 9384.75 ms. Allocated memory was 86.0 MB in the beginning and 188.7 MB in the end (delta: 102.8 MB). Free memory was 53.3 MB in the beginning and 151.4 MB in the end (delta: -98.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:06,460 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 86.0 MB. Free memory was 45.0 MB in the beginning and 45.0 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:06:06,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.71 ms. Allocated memory is still 86.0 MB. Free memory was 53.1 MB in the beginning and 51.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:06,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.73 ms. Allocated memory is still 86.0 MB. Free memory was 51.1 MB in the beginning and 49.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:06,463 INFO L168 Benchmark]: Boogie Preprocessor took 66.37 ms. Allocated memory is still 86.0 MB. Free memory was 49.4 MB in the beginning and 48.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:06:06,464 INFO L168 Benchmark]: RCFGBuilder took 773.71 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 75.3 MB in the end (delta: -27.7 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:06,465 INFO L168 Benchmark]: CodeCheck took 7579.10 ms. Allocated memory was 107.0 MB in the beginning and 188.7 MB in the end (delta: 81.8 MB). Free memory was 75.3 MB in the beginning and 154.5 MB in the end (delta: -79.1 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:06,465 INFO L168 Benchmark]: Witness Printer took 74.80 ms. Allocated memory is still 188.7 MB. Free memory was 154.5 MB in the beginning and 151.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:06:06,470 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: 7.4s, OverallIterations: 11, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8192 SDtfs, 3542 SDslu, 1536 SDs, 0 SdLazy, 19356 SolverSat, 5874 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1076 GetRequests, 949 SyntacticMatches, 19 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4047 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 4444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 20/42 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 0.39 ms. Allocated memory is still 86.0 MB. Free memory was 45.0 MB in the beginning and 45.0 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 790.71 ms. Allocated memory is still 86.0 MB. Free memory was 53.1 MB in the beginning and 51.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.73 ms. Allocated memory is still 86.0 MB. Free memory was 51.1 MB in the beginning and 49.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.37 ms. Allocated memory is still 86.0 MB. Free memory was 49.4 MB in the beginning and 48.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 773.71 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 75.3 MB in the end (delta: -27.7 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * CodeCheck took 7579.10 ms. Allocated memory was 107.0 MB in the beginning and 188.7 MB in the end (delta: 81.8 MB). Free memory was 75.3 MB in the beginning and 154.5 MB in the end (delta: -79.1 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * Witness Printer took 74.80 ms. Allocated memory is still 188.7 MB. Free memory was 154.5 MB in the beginning and 151.4 MB in the end (delta: 3.1 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...