./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9f95b6c839057502038c8f9c89c369852ea0865 ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-02 06:21:00,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-02 06:21:00,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-02 06:21:00,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-02 06:21:00,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-02 06:21:00,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-02 06:21:00,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-02 06:21:00,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-02 06:21:00,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-02 06:21:00,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-02 06:21:00,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-02 06:21:00,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-02 06:21:00,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-02 06:21:00,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-02 06:21:00,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-02 06:21:00,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-02 06:21:00,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-02 06:21:00,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-02 06:21:00,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-02 06:21:00,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-02 06:21:00,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-02 06:21:00,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-02 06:21:00,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-02 06:21:00,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-02 06:21:00,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-02 06:21:00,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-02 06:21:00,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-02 06:21:00,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-02 06:21:00,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-02 06:21:00,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-02 06:21:00,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-02 06:21:00,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-02 06:21:00,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-02 06:21:00,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-02 06:21:00,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-02 06:21:00,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-02 06:21:00,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-02 06:21:00,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-02 06:21:00,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-02 06:21:00,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-02 06:21:00,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-02 06:21:00,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2019-12-02 06:21:00,879 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-02 06:21:00,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-02 06:21:00,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-02 06:21:00,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-02 06:21:00,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-02 06:21:00,880 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-02 06:21:00,881 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-02 06:21:00,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-02 06:21:00,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-02 06:21:00,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-02 06:21:00,881 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-02 06:21:00,881 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-02 06:21:00,881 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-02 06:21:00,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-02 06:21:00,882 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-02 06:21:00,882 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-02 06:21:00,882 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-02 06:21:00,882 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-02 06:21:00,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-02 06:21:00,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-02 06:21:00,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-02 06:21:00,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-02 06:21:00,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-02 06:21:00,883 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-02 06:21:00,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-02 06:21:00,883 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_34a1498e-2b11-4906-9888-6d83c56d5150/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> e9f95b6c839057502038c8f9c89c369852ea0865 [2019-12-02 06:21:00,991 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-02 06:21:01,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-02 06:21:01,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-02 06:21:01,005 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-02 06:21:01,005 INFO L275 PluginConnector]: CDTParser initialized [2019-12-02 06:21:01,006 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2019-12-02 06:21:01,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/data/1043c7e2f/428de8c2a9514d2facd064a7f9926c65/FLAGaa9a8f6fb [2019-12-02 06:21:01,402 INFO L306 CDTParser]: Found 1 translation units. [2019-12-02 06:21:01,403 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2019-12-02 06:21:01,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/data/1043c7e2f/428de8c2a9514d2facd064a7f9926c65/FLAGaa9a8f6fb [2019-12-02 06:21:01,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/data/1043c7e2f/428de8c2a9514d2facd064a7f9926c65 [2019-12-02 06:21:01,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-02 06:21:01,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-02 06:21:01,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-02 06:21:01,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-02 06:21:01,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-02 06:21:01,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5b0273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01, skipping insertion in model container [2019-12-02 06:21:01,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-02 06:21:01,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-02 06:21:01,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-02 06:21:01,668 INFO L203 MainTranslator]: Completed pre-run [2019-12-02 06:21:01,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-02 06:21:01,733 INFO L208 MainTranslator]: Completed translation [2019-12-02 06:21:01,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01 WrapperNode [2019-12-02 06:21:01,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-02 06:21:01,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-02 06:21:01,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-02 06:21:01,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-02 06:21:01,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-02 06:21:01,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-02 06:21:01,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-02 06:21:01,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-02 06:21:01,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... [2019-12-02 06:21:01,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-02 06:21:01,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-02 06:21:01,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-02 06:21:01,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-02 06:21:01,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:21:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/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 [2019-12-02 06:21:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-02 06:21:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-02 06:21:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-02 06:21:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-02 06:21:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-02 06:21:01,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-02 06:21:02,053 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-02 06:21:02,053 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-02 06:21:02,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:21:02 BoogieIcfgContainer [2019-12-02 06:21:02,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-02 06:21:02,054 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-02 06:21:02,054 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-02 06:21:02,061 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-02 06:21:02,061 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:21:02" (1/1) ... [2019-12-02 06:21:02,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-02 06:21:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 06:21:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 47 states and 51 transitions. [2019-12-02 06:21:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-12-02 06:21:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-02 06:21:02,094 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 06:21:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 06:21:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 06:21:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 06:21:02,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 47 states and 50 transitions. [2019-12-02 06:21:02,172 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2019-12-02 06:21:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-02 06:21:02,172 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 06:21:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 06:21:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 06:21:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 06:21:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 46 states and 49 transitions. [2019-12-02 06:21:02,232 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2019-12-02 06:21:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-02 06:21:02,232 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 06:21:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 06:21:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 06:21:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 06:21:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 45 states and 48 transitions. [2019-12-02 06:21:02,366 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-12-02 06:21:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-02 06:21:02,367 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 06:21:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 06:21:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 06:21:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 06:21:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 44 states and 47 transitions. [2019-12-02 06:21:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2019-12-02 06:21:02,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-02 06:21:02,532 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 06:21:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 06:21:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 06:21:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 06:21:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 46 states and 50 transitions. [2019-12-02 06:21:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2019-12-02 06:21:02,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-02 06:21:02,965 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 06:21:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 06:21:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 06:21:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 06:21:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 53 states and 60 transitions. [2019-12-02 06:21:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2019-12-02 06:21:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-02 06:21:03,695 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 06:21:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 06:21:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-02 06:21:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 06:21:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 57 states and 68 transitions. [2019-12-02 06:21:04,986 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2019-12-02 06:21:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-02 06:21:04,987 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 06:21:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 06:21:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 06:21:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 06:21:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 06:21:05,056 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2019-12-02 06:21:05,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 06:21:05 ImpRootNode [2019-12-02 06:21:05,087 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-02 06:21:05,087 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-02 06:21:05,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-02 06:21:05,087 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-02 06:21:05,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:21:02" (3/4) ... [2019-12-02 06:21:05,090 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-02 06:21:05,130 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_34a1498e-2b11-4906-9888-6d83c56d5150/bin/ukojak/witness.graphml [2019-12-02 06:21:05,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-02 06:21:05,132 INFO L168 Benchmark]: Toolchain (without parser) took 3707.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-02 06:21:05,132 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-02 06:21:05,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-02 06:21:05,133 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.00 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. [2019-12-02 06:21:05,133 INFO L168 Benchmark]: Boogie Preprocessor took 19.14 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. [2019-12-02 06:21:05,134 INFO L168 Benchmark]: RCFGBuilder took 270.17 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2019-12-02 06:21:05,134 INFO L168 Benchmark]: CodeCheck took 3032.44 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -65.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-02 06:21:05,135 INFO L168 Benchmark]: Witness Printer took 43.00 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: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-12-02 06:21:05,138 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, 47 locations, 21 error locations. Result: UNSAFE, OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 648 SDtfs, 228 SDslu, 120 SDs, 0 SdLazy, 1420 SolverSat, 536 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 394 GetRequests, 310 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2213 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 2/3 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: 533]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L512] int *a, *b; [L513] int n; [L525] n = 1 VAL [a={0:0}, b={0:0}, n=1] [L526] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L529] a = malloc(n * sizeof(*a)) [L530] b = malloc(n * sizeof(*b)) [L531] EXPR b++ VAL [a={-2:0}, b={-1:4}, n=1] [L531] *b++ = 0 [L517] int i; [L518] i = 0 VAL [a={-2:0}, b={-1:4}, n=1] [L518] COND TRUE i < n VAL [a={-2:0}, b={-1:4}, n=1] [L519] a[i] = n [L518] i++ VAL [a={-2:0}, b={-1:4}, n=1] [L518] COND FALSE !(i < n) [L520] i = 0 VAL [a={-2:0}, b={-1:4}, n=1] [L520] COND FALSE !(i < n - 1) VAL [a={-2:0}, b={-1:4}, n=1] [L533] b[-2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 310.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -175.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.00 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 19.14 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 270.17 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * CodeCheck took 3032.44 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -65.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 43.00 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: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...