./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/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_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a99c5e1922c5e2d2ce50e982def02dab2dbd81e ....................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 01:48:44,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:48:44,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:48:44,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:48:44,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:48:44,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:48:44,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:48:44,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:48:44,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:48:44,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:48:44,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:48:44,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:48:44,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:48:44,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:48:44,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:48:44,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:48:44,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:48:44,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:48:44,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:48:44,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:48:44,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:48:44,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:48:44,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:48:44,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:48:44,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:48:44,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:48:44,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:48:44,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:48:44,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:48:44,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:48:44,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:48:44,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:48:44,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:48:44,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:48:44,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:48:44,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:48:44,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:48:44,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:48:44,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:48:44,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:48:44,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:48:44,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-20 01:48:44,225 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:48:44,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:48:44,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-20 01:48:44,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-20 01:48:44,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:48:44,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:48:44,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:48:44,227 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:48:44,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:48:44,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:48:44,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:48:44,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 01:48:44,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:48:44,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 01:48:44,229 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:48:44,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:48:44,229 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:48:44,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 01:48:44,229 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-20 01:48:44,230 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-20 01:48:44,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:48:44,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:48:44,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 01:48:44,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:48:44,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:48:44,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 01:48:44,231 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-20 01:48:44,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 01:48:44,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 01:48:44,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a99c5e1922c5e2d2ce50e982def02dab2dbd81e [2019-11-20 01:48:44,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:48:44,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:48:44,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:48:44,371 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:48:44,372 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:48:44,372 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2019-11-20 01:48:44,438 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/data/bb9bebe15/4d8fa1bd09934384a08ad40904843011/FLAGe433136f3 [2019-11-20 01:48:44,902 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:48:44,917 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2019-11-20 01:48:44,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/data/bb9bebe15/4d8fa1bd09934384a08ad40904843011/FLAGe433136f3 [2019-11-20 01:48:45,439 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/data/bb9bebe15/4d8fa1bd09934384a08ad40904843011 [2019-11-20 01:48:45,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:48:45,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:48:45,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:48:45,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:48:45,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:48:45,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a535999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45, skipping insertion in model container [2019-11-20 01:48:45,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,454 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:48:45,488 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:48:45,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:48:45,807 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:48:45,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:48:45,925 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:48:45,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45 WrapperNode [2019-11-20 01:48:45,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:48:45,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:48:45,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:48:45,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:48:45,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:48:45,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:48:45,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:48:45,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:48:45,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... [2019-11-20 01:48:45,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:48:45,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:48:45,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:48:45,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:48:45,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:48:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 01:48:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 01:48:46,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 01:48:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 01:48:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:48:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:48:46,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:48:46,423 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:48:46,423 INFO L285 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-20 01:48:46,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:48:46 BoogieIcfgContainer [2019-11-20 01:48:46,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:48:46,424 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-20 01:48:46,424 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-20 01:48:46,433 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-20 01:48:46,434 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:48:46" (1/1) ... [2019-11-20 01:48:46,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:48:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 01:48:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 14 states and 20 transitions. [2019-11-20 01:48:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2019-11-20 01:48:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 01:48:46,473 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 01:48:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:48:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:48:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 01:48:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 14 states and 18 transitions. [2019-11-20 01:48:46,568 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2019-11-20 01:48:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-20 01:48:46,569 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 01:48:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:48:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:48:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 01:48:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 15 states and 20 transitions. [2019-11-20 01:48:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2019-11-20 01:48:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 01:48:46,699 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 01:48:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:48:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:48:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 01:48:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 15 states and 21 transitions. [2019-11-20 01:48:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2019-11-20 01:48:46,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 01:48:46,978 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 01:48:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:48:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:48:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 01:48:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 18 states and 27 transitions. [2019-11-20 01:48:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2019-11-20 01:48:47,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 01:48:47,460 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 01:48:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:48:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:48:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 01:48:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 19 states and 29 transitions. [2019-11-20 01:48:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 29 transitions. [2019-11-20 01:48:48,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 01:48:48,312 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 01:48:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:48:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 01:48:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 01:48:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 21 states and 30 transitions. [2019-11-20 01:48:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2019-11-20 01:48:48,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 01:48:48,764 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 01:48:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:48:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 01:48:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 01:48:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 35 states and 55 transitions. [2019-11-20 01:48:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 55 transitions. [2019-11-20 01:48:51,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 01:48:51,448 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 01:48:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:48:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 01:48:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 01:48:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 36 states and 55 transitions. [2019-11-20 01:48:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 55 transitions. [2019-11-20 01:48:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 01:48:51,768 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 01:48:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:48:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:48:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:48:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:48:51,942 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 9 iterations. [2019-11-20 01:48:52,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 01:48:52 ImpRootNode [2019-11-20 01:48:52,007 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-20 01:48:52,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:48:52,008 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:48:52,008 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:48:52,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:48:46" (3/4) ... [2019-11-20 01:48:52,010 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 01:48:52,075 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6a18c14a-55c1-4c13-8803-d2ae5e44a3f3/bin/ukojak/witness.graphml [2019-11-20 01:48:52,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:48:52,077 INFO L168 Benchmark]: Toolchain (without parser) took 6633.65 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 288.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -147.0 MB). Peak memory consumption was 141.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:48:52,077 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:48:52,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -202.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:48:52,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:48:52,079 INFO L168 Benchmark]: Boogie Preprocessor took 24.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:48:52,080 INFO L168 Benchmark]: RCFGBuilder took 431.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:48:52,080 INFO L168 Benchmark]: CodeCheck took 5583.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 112.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.1 MB). Peak memory consumption was 131.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:48:52,081 INFO L168 Benchmark]: Witness Printer took 67.48 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. [2019-11-20 01:48:52,084 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 5.5s, OverallIterations: 9, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1920 SDtfs, 808 SDslu, 272 SDs, 0 SdLazy, 5466 SolverSat, 1674 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 903 GetRequests, 767 SyntacticMatches, 22 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4185 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 4812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 25/39 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: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] SLL s = sll_create(len + 1); [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 483.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -202.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 431.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * CodeCheck took 5583.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 112.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.1 MB). Peak memory consumption was 131.3 MB. Max. memory is 11.5 GB. * Witness Printer took 67.48 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...