./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-01_false-unreach-call_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-01_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/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 31de2fb67e84e52bb7705ac8720e6b139fef2d91 .............................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.23-1dbac8b [2018-10-26 23:11:26,971 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:11:26,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:11:26,983 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:11:26,984 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:11:26,985 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:11:26,986 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:11:26,987 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:11:26,989 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:11:26,990 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:11:26,991 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:11:26,991 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:11:26,992 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:11:26,993 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:11:26,994 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:11:26,994 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:11:26,995 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:11:26,998 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:11:26,999 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:11:27,001 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:11:27,002 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:11:27,003 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:11:27,005 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:11:27,006 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:11:27,006 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:11:27,007 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:11:27,008 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:11:27,009 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:11:27,010 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:11:27,011 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:11:27,011 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:11:27,011 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:11:27,012 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:11:27,012 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:11:27,013 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:11:27,014 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:11:27,014 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-10-26 23:11:27,027 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:11:27,027 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:11:27,028 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:11:27,029 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 23:11:27,029 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 23:11:27,029 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 23:11:27,029 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:11:27,030 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:11:27,030 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:11:27,030 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:11:27,030 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:11:27,030 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:11:27,030 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:11:27,031 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:11:27,031 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:11:27,031 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:11:27,031 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:11:27,031 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-10-26 23:11:27,031 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-10-26 23:11:27,032 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:11:27,032 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:11:27,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-26 23:11:27,034 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:11:27,034 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:11:27,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:11:27,034 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-10-26 23:11:27,035 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:11:27,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:11:27,035 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/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 -> 31de2fb67e84e52bb7705ac8720e6b139fef2d91 [2018-10-26 23:11:27,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:11:27,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:11:27,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:11:27,081 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:11:27,082 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:11:27,082 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/sll-01_false-unreach-call_false-valid-deref.i [2018-10-26 23:11:27,136 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/data/471461520/1b7a4fbcb90846f2b03ac432b1cce814/FLAG726bef16e [2018-10-26 23:11:27,576 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:11:27,577 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/sv-benchmarks/c/forester-heap/sll-01_false-unreach-call_false-valid-deref.i [2018-10-26 23:11:27,588 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/data/471461520/1b7a4fbcb90846f2b03ac432b1cce814/FLAG726bef16e [2018-10-26 23:11:27,601 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/data/471461520/1b7a4fbcb90846f2b03ac432b1cce814 [2018-10-26 23:11:27,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:11:27,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:11:27,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:11:27,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:11:27,611 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:11:27,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:11:27" (1/1) ... [2018-10-26 23:11:27,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3a0eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:27, skipping insertion in model container [2018-10-26 23:11:27,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:11:27" (1/1) ... [2018-10-26 23:11:27,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:11:27,672 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:11:27,957 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:11:27,969 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:11:28,016 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:11:28,059 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:11:28,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28 WrapperNode [2018-10-26 23:11:28,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:11:28,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:11:28,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:11:28,061 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:11:28,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... [2018-10-26 23:11:28,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... [2018-10-26 23:11:28,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:11:28,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:11:28,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:11:28,180 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:11:28,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... [2018-10-26 23:11:28,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... [2018-10-26 23:11:28,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... [2018-10-26 23:11:28,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... [2018-10-26 23:11:28,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... [2018-10-26 23:11:28,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... [2018-10-26 23:11:28,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... [2018-10-26 23:11:28,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:11:28,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:11:28,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:11:28,248 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:11:28,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:11:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/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 [2018-10-26 23:11:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 23:11:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-10-26 23:11:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-10-26 23:11:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 23:11:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:11:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:11:30,322 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:11:30,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:11:30 BoogieIcfgContainer [2018-10-26 23:11:30,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:11:30,323 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-10-26 23:11:30,323 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-10-26 23:11:30,333 INFO L276 PluginConnector]: CodeCheck initialized [2018-10-26 23:11:30,333 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:11:30" (1/1) ... [2018-10-26 23:11:30,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:11:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 85 states and 132 transitions. [2018-10-26 23:11:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 132 transitions. [2018-10-26 23:11:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-26 23:11:30,376 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 83 states and 127 transitions. [2018-10-26 23:11:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 127 transitions. [2018-10-26 23:11:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-26 23:11:30,708 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 81 states and 122 transitions. [2018-10-26 23:11:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 122 transitions. [2018-10-26 23:11:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 23:11:30,894 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 79 states and 115 transitions. [2018-10-26 23:11:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 115 transitions. [2018-10-26 23:11:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 23:11:31,284 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 84 states and 119 transitions. [2018-10-26 23:11:31,481 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2018-10-26 23:11:31,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 23:11:31,483 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 82 states and 114 transitions. [2018-10-26 23:11:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2018-10-26 23:11:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 23:11:31,571 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 82 states and 109 transitions. [2018-10-26 23:11:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 109 transitions. [2018-10-26 23:11:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 23:11:31,619 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 80 states and 105 transitions. [2018-10-26 23:11:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2018-10-26 23:11:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 23:11:31,799 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 78 states and 100 transitions. [2018-10-26 23:11:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2018-10-26 23:11:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 23:11:31,889 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 82 states and 106 transitions. [2018-10-26 23:11:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2018-10-26 23:11:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 23:11:31,978 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 85 states and 106 transitions. [2018-10-26 23:11:32,064 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 106 transitions. [2018-10-26 23:11:32,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 23:11:32,064 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 100 states and 125 transitions. [2018-10-26 23:11:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2018-10-26 23:11:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 23:11:33,802 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:11:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 92 states and 115 transitions. [2018-10-26 23:11:34,281 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2018-10-26 23:11:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-26 23:11:34,282 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 110 states and 138 transitions. [2018-10-26 23:11:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 138 transitions. [2018-10-26 23:11:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 23:11:37,297 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:11:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 108 states and 136 transitions. [2018-10-26 23:11:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 136 transitions. [2018-10-26 23:11:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-26 23:11:37,594 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 122 states and 159 transitions. [2018-10-26 23:11:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 159 transitions. [2018-10-26 23:11:40,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-26 23:11:40,873 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 124 states and 160 transitions. [2018-10-26 23:11:41,234 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 160 transitions. [2018-10-26 23:11:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 23:11:41,234 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 138 states and 179 transitions. [2018-10-26 23:11:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 179 transitions. [2018-10-26 23:11:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 23:11:43,619 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:11:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:11:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 23:11:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 151 states and 197 transitions. [2018-10-26 23:11:47,531 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2018-10-26 23:11:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-26 23:11:47,532 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 23:11:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:11:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:11:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:11:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 23:11:47,703 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 19 iterations. [2018-10-26 23:11:47,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 26.10 11:11:47 ImpRootNode [2018-10-26 23:11:47,772 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-10-26 23:11:47,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 23:11:47,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 23:11:47,773 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 23:11:47,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:11:30" (3/4) ... [2018-10-26 23:11:47,784 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 23:11:47,872 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_55793ad7-016d-418a-bd43-764c65f26b1a/bin-2019/ukojak/witness.graphml [2018-10-26 23:11:47,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 23:11:47,873 INFO L168 Benchmark]: Toolchain (without parser) took 20268.01 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 302.5 MB). Free memory was 956.9 MB in the beginning and 1.1 GB in the end (delta: -141.5 MB). Peak memory consumption was 161.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:11:47,875 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:11:47,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.43 ms. Allocated memory is still 1.0 GB. Free memory was 956.9 MB in the beginning and 932.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-10-26 23:11:47,876 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 932.8 MB in the beginning and 1.1 GB in the end (delta: -206.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. [2018-10-26 23:11:47,877 INFO L168 Benchmark]: Boogie Preprocessor took 67.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:11:47,877 INFO L168 Benchmark]: RCFGBuilder took 2074.80 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: 82.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 11.5 GB. [2018-10-26 23:11:47,878 INFO L168 Benchmark]: CodeCheck took 17449.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 156.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -46.8 MB). Peak memory consumption was 109.9 MB. Max. memory is 11.5 GB. [2018-10-26 23:11:47,878 INFO L168 Benchmark]: Witness Printer took 100.02 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-10-26 23:11:47,883 INFO L336 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, 145 locations, 13 error locations. UNSAFE Result, 17.3s OverallTime, 19 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2087510 SDtfs, 1108136 SDslu, 881496 SDs, 0 SdLazy, 2200444 SolverSat, 992828 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2977 GetRequests, 2754 SyntacticMatches, 41 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11494 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 449 NumberOfCodeBlocks, 449 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 394 ConstructedInterpolants, 0 QuantifiedInterpolants, 92663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 8/16 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] EXPR, FCALL malloc(sizeof(SLL)) [L991] SLL* list = malloc(sizeof(SLL)); [L992] FCALL list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(0) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] EXPR, FCALL malloc(sizeof(SLL)) [L993] FCALL list->inner = malloc(sizeof(SLL)) [L993] EXPR, FCALL list->inner [L993] FCALL list->inner->next = ((void*)0) [L993] EXPR, FCALL list->inner [L993] FCALL list->inner->inner = ((void*)0) [L993] EXPR, FCALL list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L993] COND FALSE !(0) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1012] COND FALSE !(0) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR, FCALL end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1024] COND FALSE !(0) [L1025] EXPR, FCALL inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1025] COND FALSE !(0) [L1026] EXPR, FCALL inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1026] COND FALSE !(0) [L1027] EXPR, FCALL inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR, FCALL inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1024] COND FALSE !(0) [L1025] EXPR, FCALL inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 453.43 ms. Allocated memory is still 1.0 GB. Free memory was 956.9 MB in the beginning and 932.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 118.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 932.8 MB in the beginning and 1.1 GB in the end (delta: -206.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 67.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2074.80 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: 82.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 11.5 GB. * CodeCheck took 17449.50 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 156.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -46.8 MB). Peak memory consumption was 109.9 MB. Max. memory is 11.5 GB. * Witness Printer took 100.02 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: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...