./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/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 d452f938d74713dbff7e0330f8ef393409d67ffe ..................................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 17:57:43,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:57:43,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:57:43,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:57:43,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:57:43,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:57:43,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:57:43,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:57:43,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:57:43,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:57:43,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:57:43,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:57:43,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:57:43,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:57:43,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:57:43,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:57:43,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:57:43,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:57:43,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:57:43,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:57:43,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:57:43,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:57:43,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:57:43,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:57:43,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:57:43,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:57:43,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:57:43,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:57:43,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:57:43,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:57:43,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:57:43,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:57:43,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:57:43,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:57:43,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:57:43,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:57:43,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:57:43,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:57:43,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:57:43,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:57:43,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:57:43,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-12-01 17:57:43,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:57:43,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:57:43,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:57:43,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:57:43,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:57:43,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:57:43,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 17:57:43,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:57:43,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:57:43,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:57:43,914 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 17:57:43,915 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 17:57:43,915 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 17:57:43,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:57:43,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:57:43,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:57:43,916 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:57:43,916 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:57:43,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:57:43,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:57:43,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:57:43,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:57:43,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:57:43,918 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:57:43,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:57:43,919 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_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d452f938d74713dbff7e0330f8ef393409d67ffe [2020-12-01 17:57:44,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:57:44,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:57:44,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:57:44,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:57:44,339 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:57:44,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2020-12-01 17:57:44,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/data/11840ce61/115eea765cb6490c87d2aec37a5ad6f4/FLAGa094e39e1 [2020-12-01 17:57:45,043 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:57:45,044 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2020-12-01 17:57:45,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/data/11840ce61/115eea765cb6490c87d2aec37a5ad6f4/FLAGa094e39e1 [2020-12-01 17:57:45,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/data/11840ce61/115eea765cb6490c87d2aec37a5ad6f4 [2020-12-01 17:57:45,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:57:45,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:57:45,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:57:45,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:57:45,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:57:45,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10525b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45, skipping insertion in model container [2020-12-01 17:57:45,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:57:45,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:57:45,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:57:45,667 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:57:45,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:57:45,727 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:57:45,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45 WrapperNode [2020-12-01 17:57:45,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:57:45,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:57:45,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:57:45,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:57:45,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:57:45,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:57:45,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:57:45,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:57:45,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... [2020-12-01 17:57:45,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:57:45,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:57:45,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:57:45,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:57:45,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:57:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/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 [2020-12-01 17:57:45,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 17:57:45,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 17:57:45,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:57:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:57:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 17:57:46,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:57:46,316 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 17:57:46,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:57:46 BoogieIcfgContainer [2020-12-01 17:57:46,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:57:46,321 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:57:46,321 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:57:46,347 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:57:46,347 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:57:46" (1/1) ... [2020-12-01 17:57:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:57:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:57:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 13 states and 12 transitions. [2020-12-01 17:57:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-01 17:57:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-01 17:57:46,422 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:57:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:57:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:57:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:57:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 12 states and 11 transitions. [2020-12-01 17:57:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-01 17:57:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 17:57:46,626 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:57:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:57:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:57:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:57:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 11 states and 10 transitions. [2020-12-01 17:57:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-12-01 17:57:46,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 17:57:46,769 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:57:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:57:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:57:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:57:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 10 states and 9 transitions. [2020-12-01 17:57:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-12-01 17:57:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 17:57:47,092 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:57:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:57:47,144 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:57:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:57:47,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:57:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:57:47,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:57:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:57:47,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:57:47,246 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2020-12-01 17:57:47,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:57:47 ImpRootNode [2020-12-01 17:57:47,283 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:57:47,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:57:47,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:57:47,285 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:57:47,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:57:46" (3/4) ... [2020-12-01 17:57:47,288 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 17:57:47,344 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ecfad0de-301a-4c37-89ec-d0752ca6ecb4/bin/ukojak/witness.graphml [2020-12-01 17:57:47,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:57:47,349 INFO L168 Benchmark]: Toolchain (without parser) took 1920.77 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 54.4 MB in the end (delta: 18.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2020-12-01 17:57:47,350 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 81.8 MB. Free memory is still 39.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:57:47,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.91 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 79.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:57:47,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.52 ms. Allocated memory is still 100.7 MB. Free memory was 79.0 MB in the beginning and 77.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:57:47,353 INFO L168 Benchmark]: Boogie Preprocessor took 25.34 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 76.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:57:47,358 INFO L168 Benchmark]: RCFGBuilder took 525.41 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 64.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 17:57:47,359 INFO L168 Benchmark]: CodeCheck took 961.76 ms. Allocated memory is still 100.7 MB. Free memory was 64.3 MB in the beginning and 55.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-12-01 17:57:47,360 INFO L168 Benchmark]: Witness Printer took 61.70 ms. Allocated memory is still 100.7 MB. Free memory was 55.9 MB in the beginning and 54.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:57:47,366 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, 13 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 SDtfs, 16 SDslu, 0 SDs, 0 SdLazy, 64 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int* p = malloc(10 * sizeof(int)); [L6] free(p) [L6] free(p) [L6] free(p) [L14] p[0] = 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 81.8 MB. Free memory is still 39.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.91 ms. Allocated memory is still 100.7 MB. Free memory was 73.1 MB in the beginning and 79.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.52 ms. Allocated memory is still 100.7 MB. Free memory was 79.0 MB in the beginning and 77.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.34 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 76.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 525.41 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 64.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 961.76 ms. Allocated memory is still 100.7 MB. Free memory was 64.3 MB in the beginning and 55.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Witness Printer took 61.70 ms. Allocated memory is still 100.7 MB. Free memory was 55.9 MB in the beginning and 54.4 MB in the end (delta: 1.5 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...