./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/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 1f270b702de634d3ad2ee5a400388c6410a4cf10 ................................................................................................................................................................................................................................................... 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-cad4683 [2019-10-22 10:18:23,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 10:18:23,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 10:18:23,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 10:18:23,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 10:18:23,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 10:18:23,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 10:18:23,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 10:18:23,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 10:18:23,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 10:18:23,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 10:18:23,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 10:18:23,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 10:18:23,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 10:18:23,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 10:18:23,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 10:18:23,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 10:18:24,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 10:18:24,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 10:18:24,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 10:18:24,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 10:18:24,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 10:18:24,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 10:18:24,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 10:18:24,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 10:18:24,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 10:18:24,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 10:18:24,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 10:18:24,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 10:18:24,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 10:18:24,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 10:18:24,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 10:18:24,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 10:18:24,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 10:18:24,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 10:18:24,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 10:18:24,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 10:18:24,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 10:18:24,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 10:18:24,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 10:18:24,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 10:18:24,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-10-22 10:18:24,051 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 10:18:24,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 10:18:24,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 10:18:24,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-10-22 10:18:24,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 10:18:24,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 10:18:24,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 10:18:24,053 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 10:18:24,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 10:18:24,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 10:18:24,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 10:18:24,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 10:18:24,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 10:18:24,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 10:18:24,055 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 10:18:24,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 10:18:24,055 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 10:18:24,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 10:18:24,056 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-10-22 10:18:24,056 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-10-22 10:18:24,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 10:18:24,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 10:18:24,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:18:24,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 10:18:24,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 10:18:24,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 10:18:24,057 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-10-22 10:18:24,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 10:18:24,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 10:18:24,058 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/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/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 -> 1f270b702de634d3ad2ee5a400388c6410a4cf10 [2019-10-22 10:18:24,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 10:18:24,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 10:18:24,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 10:18:24,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 10:18:24,109 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 10:18:24,110 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2019-10-22 10:18:24,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/data/fabfef158/a22efa19b8f941a68152ba8f798d53be/FLAG0afbcc61d [2019-10-22 10:18:24,649 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 10:18:24,650 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2019-10-22 10:18:24,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/data/fabfef158/a22efa19b8f941a68152ba8f798d53be/FLAG0afbcc61d [2019-10-22 10:18:25,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/data/fabfef158/a22efa19b8f941a68152ba8f798d53be [2019-10-22 10:18:25,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 10:18:25,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 10:18:25,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 10:18:25,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 10:18:25,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 10:18:25,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e77d902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25, skipping insertion in model container [2019-10-22 10:18:25,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,160 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 10:18:25,203 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 10:18:25,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:18:25,698 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 10:18:25,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:18:25,796 INFO L192 MainTranslator]: Completed translation [2019-10-22 10:18:25,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25 WrapperNode [2019-10-22 10:18:25,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 10:18:25,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 10:18:25,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 10:18:25,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 10:18:25,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 10:18:25,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 10:18:25,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 10:18:25,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 10:18:25,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... [2019-10-22 10:18:25,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 10:18:25,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 10:18:25,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 10:18:25,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 10:18:25,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:18:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/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 [2019-10-22 10:18:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 10:18:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 10:18:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 10:18:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 10:18:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 10:18:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 10:18:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 10:18:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 10:18:26,609 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 10:18:26,609 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-10-22 10:18:26,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:18:26 BoogieIcfgContainer [2019-10-22 10:18:26,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 10:18:26,611 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-10-22 10:18:26,614 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-10-22 10:18:26,626 INFO L275 PluginConnector]: CodeCheck initialized [2019-10-22 10:18:26,626 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:18:26" (1/1) ... [2019-10-22 10:18:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 10:18:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:18:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 22 states and 34 transitions. [2019-10-22 10:18:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 34 transitions. [2019-10-22 10:18:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 10:18:26,685 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:18:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:18:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:18:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:18:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 30 transitions. [2019-10-22 10:18:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2019-10-22 10:18:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 10:18:26,837 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:18:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:18:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:18:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:18:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 20 states and 28 transitions. [2019-10-22 10:18:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2019-10-22 10:18:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 10:18:26,980 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:18:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:18:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:18:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:18:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 27 states and 35 transitions. [2019-10-22 10:18:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-10-22 10:18:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 10:18:27,694 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:18:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:18:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:18:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:18:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 32 states and 45 transitions. [2019-10-22 10:18:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2019-10-22 10:18:29,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 10:18:29,574 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:18:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:18:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:18:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:18:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:18:29,708 WARN L489 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2019-10-22 10:18:29,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.10 10:18:29 ImpRootNode [2019-10-22 10:18:29,760 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-10-22 10:18:29,760 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 10:18:29,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 10:18:29,760 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 10:18:29,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:18:26" (3/4) ... [2019-10-22 10:18:29,764 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 10:18:29,815 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d85abf89-1801-42a2-aed6-2cdbefaaacd7/bin/ukojak/witness.graphml [2019-10-22 10:18:29,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 10:18:29,818 INFO L168 Benchmark]: Toolchain (without parser) took 4673.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.1 MB in the beginning and 900.9 MB in the end (delta: 38.2 MB). Peak memory consumption was 174.0 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:29,818 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:18:29,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:29,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.53 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. [2019-10-22 10:18:29,820 INFO L168 Benchmark]: Boogie Preprocessor took 36.27 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. [2019-10-22 10:18:29,821 INFO L168 Benchmark]: RCFGBuilder took 732.75 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:29,822 INFO L168 Benchmark]: CodeCheck took 3148.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 900.9 MB in the end (delta: 168.4 MB). Peak memory consumption was 168.4 MB. Max. memory is 11.5 GB. [2019-10-22 10:18:29,822 INFO L168 Benchmark]: Witness Printer took 55.48 ms. Allocated memory is still 1.2 GB. Free memory is still 900.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:18:29,826 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, 22 locations, 3 error locations. Result: UNSAFE, OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 92 SDslu, 132 SDs, 0 SdLazy, 200 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1781 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2 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: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); [L995] list->next = ((void*)0) [L996] list->prev = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list [L1029] COND FALSE !(!(((void*)0) != end)) [L1030] EXPR end->colour [L1030] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE ((void*)0) != end [L1034] EXPR end->colour [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR end->next [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 653.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.53 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. * Boogie Preprocessor took 36.27 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 732.75 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * CodeCheck took 3148.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 900.9 MB in the end (delta: 168.4 MB). Peak memory consumption was 168.4 MB. Max. memory is 11.5 GB. * Witness Printer took 55.48 ms. Allocated memory is still 1.2 GB. Free memory is still 900.9 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...