./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/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_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/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 978f701fee046cd9a3f43bfb12d114d1876d2f10 ..................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-28 04:44:33,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:44:33,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:44:33,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:44:33,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:44:33,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:44:33,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:44:33,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:44:33,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:44:33,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:44:33,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:44:33,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:44:33,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:44:33,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:44:33,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:44:33,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:44:33,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:44:33,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:44:33,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:44:33,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:44:33,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:44:33,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:44:33,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:44:33,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:44:33,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:44:33,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:44:33,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:44:33,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:44:33,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:44:33,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:44:33,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:44:33,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:44:33,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:44:33,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:44:33,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:44:33,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:44:33,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:44:33,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:44:33,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:44:33,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:44:33,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:44:33,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-28 04:44:33,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:44:33,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:44:33,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:44:33,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:44:33,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:44:33,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:44:33,883 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:44:33,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:44:33,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:44:33,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:44:33,884 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 04:44:33,884 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 04:44:33,884 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 04:44:33,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:44:33,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:44:33,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:44:33,885 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:44:33,885 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:44:33,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:44:33,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:44:33,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:44:33,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:44:33,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:44:33,886 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:44:33,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:44:33,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 978f701fee046cd9a3f43bfb12d114d1876d2f10 [2020-11-28 04:44:34,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:44:34,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:44:34,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:44:34,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:44:34,196 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:44:34,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2020-11-28 04:44:34,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/data/bfc86f0a7/3a713537dba34dacbdb086d2851b23a8/FLAGd420c4bf7 [2020-11-28 04:44:34,813 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:44:34,814 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/sv-benchmarks/c/list-ext-properties/960521-1_1-1.i [2020-11-28 04:44:34,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/data/bfc86f0a7/3a713537dba34dacbdb086d2851b23a8/FLAGd420c4bf7 [2020-11-28 04:44:35,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/data/bfc86f0a7/3a713537dba34dacbdb086d2851b23a8 [2020-11-28 04:44:35,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:44:35,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:44:35,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:44:35,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:44:35,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:44:35,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59796755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35, skipping insertion in model container [2020-11-28 04:44:35,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:44:35,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:44:35,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:44:35,677 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:44:35,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:44:35,786 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:44:35,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35 WrapperNode [2020-11-28 04:44:35,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:44:35,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:44:35,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:44:35,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:44:35,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:44:35,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:44:35,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:44:35,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:44:35,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... [2020-11-28 04:44:35,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:44:35,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:44:35,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:44:35,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:44:35,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:44:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:44:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:44:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:44:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 04:44:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:44:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:44:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:44:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:44:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:44:36,567 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:44:36,567 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 04:44:36,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:44:36 BoogieIcfgContainer [2020-11-28 04:44:36,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:44:36,570 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:44:36,571 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:44:36,579 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:44:36,579 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:44:36" (1/1) ... [2020-11-28 04:44:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:44:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 47 states and 51 transitions. [2020-11-28 04:44:36,636 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-11-28 04:44:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:44:36,638 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 47 states and 50 transitions. [2020-11-28 04:44:36,815 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-11-28 04:44:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 04:44:36,816 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 46 states and 49 transitions. [2020-11-28 04:44:36,922 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-11-28 04:44:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 04:44:36,923 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 50 states and 56 transitions. [2020-11-28 04:44:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-11-28 04:44:37,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:44:37,219 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:37,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 52 states and 60 transitions. [2020-11-28 04:44:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-11-28 04:44:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:44:37,635 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 54 states and 64 transitions. [2020-11-28 04:44:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-11-28 04:44:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:44:38,197 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:38,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 49 states and 54 transitions. [2020-11-28 04:44:38,565 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-11-28 04:44:38,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:44:38,566 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 51 states and 56 transitions. [2020-11-28 04:44:39,218 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2020-11-28 04:44:39,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:44:39,218 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:44:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 53 states and 59 transitions. [2020-11-28 04:44:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-11-28 04:44:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:44:39,605 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:44:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 04:44:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:44:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 56 states and 66 transitions. [2020-11-28 04:44:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-11-28 04:44:40,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:44:40,636 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:44:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:40,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:40,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:40,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:44:40,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:44:40,761 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 10 iterations. [2020-11-28 04:44:40,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:44:40 ImpRootNode [2020-11-28 04:44:40,807 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:44:40,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:44:40,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:44:40,808 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:44:40,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:44:36" (3/4) ... [2020-11-28 04:44:40,811 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:44:40,875 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_90b19393-b5dd-48a4-9c4f-5e72dfbc1612/bin/ukojak/witness.graphml [2020-11-28 04:44:40,876 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:44:40,878 INFO L168 Benchmark]: Toolchain (without parser) took 5624.14 ms. Allocated memory was 96.5 MB in the beginning and 151.0 MB in the end (delta: 54.5 MB). Free memory was 55.9 MB in the beginning and 88.4 MB in the end (delta: -32.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:40,879 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 73.7 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:40,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.84 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 55.7 MB in the beginning and 93.5 MB in the end (delta: -37.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:40,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.32 ms. Allocated memory is still 125.8 MB. Free memory was 93.5 MB in the beginning and 91.6 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:40,881 INFO L168 Benchmark]: Boogie Preprocessor took 52.27 ms. Allocated memory is still 125.8 MB. Free memory was 91.6 MB in the beginning and 90.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:40,882 INFO L168 Benchmark]: RCFGBuilder took 683.63 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 64.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:40,883 INFO L168 Benchmark]: CodeCheck took 4236.79 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 64.8 MB in the beginning and 90.5 MB in the end (delta: -25.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:44:40,884 INFO L168 Benchmark]: Witness Printer took 68.01 ms. Allocated memory is still 151.0 MB. Free memory was 90.5 MB in the beginning and 88.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:44:40,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 47 locations, 21 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2616 SDtfs, 864 SDslu, 456 SDs, 0 SdLazy, 5386 SolverSat, 2014 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 503 GetRequests, 433 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1339 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 2/5 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: 544]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L523] int *a, *b; [L524] int n; [L536] n = 1 VAL [a={0:0}, b={0:0}, n=1] [L537] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L540] a = malloc(n * sizeof(*a)) [L541] b = malloc(n * sizeof(*b)) [L542] EXPR b++ VAL [a={19691:0}, b={19690:4}, n=1] [L542] *b++ = 0 [L528] int i; [L529] i = 0 VAL [a={19691:0}, b={19690:4}, n=1] [L529] COND TRUE i < n VAL [a={19691:0}, b={19690:4}, n=1] [L530] a[i] = n [L529] i++ VAL [a={19691:0}, b={19690:4}, n=1] [L529] COND FALSE !(i < n) [L531] i = 0 VAL [a={19691:0}, b={19690:4}, n=1] [L531] COND FALSE !(i < n - 1) VAL [a={19691:0}, b={19690:4}, n=1] [L544] b[-2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 73.7 MB in the end (delta: 55.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 523.84 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 55.7 MB in the beginning and 93.5 MB in the end (delta: -37.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.32 ms. Allocated memory is still 125.8 MB. Free memory was 93.5 MB in the beginning and 91.6 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.27 ms. Allocated memory is still 125.8 MB. Free memory was 91.6 MB in the beginning and 90.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 683.63 ms. Allocated memory is still 125.8 MB. Free memory was 90.0 MB in the beginning and 64.8 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * CodeCheck took 4236.79 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 64.8 MB in the beginning and 90.5 MB in the end (delta: -25.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 68.01 ms. Allocated memory is still 151.0 MB. Free memory was 90.5 MB in the beginning and 88.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...