./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i --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_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/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 15362e3354379e86b7768de02eb760f50ed72879 ................................................................................................................................................................................................................................................................................................................ 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 18:23:53,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:23:53,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:23:53,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:23:53,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:23:53,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:23:53,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:23:53,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:23:53,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:23:53,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:23:53,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:23:53,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:23:53,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:23:53,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:23:53,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:23:53,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:23:53,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:23:53,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:23:53,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:23:53,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:23:53,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:23:53,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:23:53,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:23:53,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:23:53,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:23:53,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:23:53,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:23:53,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:23:53,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:23:53,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:23:53,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:23:53,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:23:53,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:23:53,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:23:53,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:23:53,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:23:53,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:23:53,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:23:53,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:23:53,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:23:53,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:23:53,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-12-01 18:23:53,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:23:53,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:23:53,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:23:53,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:23:53,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:23:53,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:23:53,671 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 18:23:53,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:23:53,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:23:53,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:23:53,673 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 18:23:53,673 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 18:23:53,673 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 18:23:53,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:23:53,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:23:53,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:23:53,674 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:23:53,674 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:23:53,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:23:53,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:23:53,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:23:53,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:23:53,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:23:53,676 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:23:53,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:23:53,676 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_7d93ddba-05b4-43d5-9ae5-6f5663668953/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15362e3354379e86b7768de02eb760f50ed72879 [2020-12-01 18:23:53,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:23:54,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:23:54,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:23:54,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:23:54,020 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:23:54,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2020-12-01 18:23:54,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/data/e3f5c0408/9a9feba8c9a54e33bed8c860a215a1a7/FLAG3e27a0944 [2020-12-01 18:23:54,815 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:23:54,818 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2020-12-01 18:23:54,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/data/e3f5c0408/9a9feba8c9a54e33bed8c860a215a1a7/FLAG3e27a0944 [2020-12-01 18:23:55,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/data/e3f5c0408/9a9feba8c9a54e33bed8c860a215a1a7 [2020-12-01 18:23:55,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:23:55,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:23:55,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:23:55,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:23:55,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:23:55,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426afc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55, skipping insertion in model container [2020-12-01 18:23:55,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:23:55,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:23:55,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:23:55,626 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:23:55,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:23:55,780 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:23:55,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55 WrapperNode [2020-12-01 18:23:55,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:23:55,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:23:55,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:23:55,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:23:55,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:23:55,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:23:55,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:23:55,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:23:55,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... [2020-12-01 18:23:55,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:23:55,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:23:55,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:23:55,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:23:55,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:23:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/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 18:23:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 18:23:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 18:23:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 18:23:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 18:23:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:23:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:23:56,664 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:23:56,665 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 18:23:56,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:23:56 BoogieIcfgContainer [2020-12-01 18:23:56,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:23:56,670 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:23:56,670 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:23:56,684 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:23:56,686 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:23:56" (1/1) ... [2020-12-01 18:23:56,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:23:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 22 states and 24 transitions. [2020-12-01 18:23:56,742 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-01 18:23:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 18:23:56,745 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:56,967 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 18:23:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 21 states and 23 transitions. [2020-12-01 18:23:57,021 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-12-01 18:23:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 18:23:57,022 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:57,127 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 18:23:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2020-12-01 18:23:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-01 18:23:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 18:23:57,502 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:57,552 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 18:23:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 26 transitions. [2020-12-01 18:23:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-12-01 18:23:57,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 18:23:57,570 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:57,674 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 18:23:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 23 states and 28 transitions. [2020-12-01 18:23:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2020-12-01 18:23:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 18:23:58,053 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:58,098 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 18:23:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 24 states and 29 transitions. [2020-12-01 18:23:58,153 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-12-01 18:23:58,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 18:23:58,153 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:58,299 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 18:23:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2020-12-01 18:23:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-12-01 18:23:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 18:23:58,813 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:23:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:23:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:23:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 29 states and 40 transitions. [2020-12-01 18:23:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-01 18:23:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 18:23:59,884 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:23:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:24:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:24:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:24:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 41 transitions. [2020-12-01 18:24:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2020-12-01 18:24:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 18:24:00,436 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:24:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:24:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 18:24:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:24:00,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 28 states and 38 transitions. [2020-12-01 18:24:00,501 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-12-01 18:24:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 18:24:00,502 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:24:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:24:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:24:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:24:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 30 states and 42 transitions. [2020-12-01 18:24:01,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2020-12-01 18:24:01,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 18:24:01,329 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:24:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:24:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:24:01,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:24:01,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 23 states and 26 transitions. [2020-12-01 18:24:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-01 18:24:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 18:24:01,880 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:24:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:24:02,015 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 18:24:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:24:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 27 states and 30 transitions. [2020-12-01 18:24:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-12-01 18:24:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 18:24:02,659 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:24:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:24:02,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:24:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:24:02,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:24:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:24:02,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:24:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:24:02,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:24:02,829 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 13 iterations. [2020-12-01 18:24:02,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:24:02 ImpRootNode [2020-12-01 18:24:02,853 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:24:02,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:24:02,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:24:02,854 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:24:02,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:23:56" (3/4) ... [2020-12-01 18:24:02,857 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 18:24:02,941 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7d93ddba-05b4-43d5-9ae5-6f5663668953/bin/ukojak/witness.graphml [2020-12-01 18:24:02,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:24:02,943 INFO L168 Benchmark]: Toolchain (without parser) took 7848.71 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 53.7 MB in the beginning and 71.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2020-12-01 18:24:02,944 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:24:02,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.65 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.4 MB in the beginning and 67.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:24:02,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.31 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 65.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:24:02,947 INFO L168 Benchmark]: Boogie Preprocessor took 70.45 ms. Allocated memory is still 100.7 MB. Free memory was 65.5 MB in the beginning and 64.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:24:02,948 INFO L168 Benchmark]: RCFGBuilder took 734.26 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 40.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:24:02,949 INFO L168 Benchmark]: CodeCheck took 6183.24 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 40.9 MB in the beginning and 72.6 MB in the end (delta: -31.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:24:02,949 INFO L168 Benchmark]: Witness Printer took 87.62 ms. Allocated memory is still 146.8 MB. Free memory was 72.6 MB in the beginning and 71.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:24:02,955 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, 22 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.1s, OverallIterations: 13, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8228 SDtfs, 11104 SDslu, 5128 SDs, 0 SdLazy, 54312 SolverSat, 19644 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 487 GetRequests, 377 SyntacticMatches, 14 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3537 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 3/11 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: 532]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; [L521] COND TRUE i < length - 1 [L523] nondetString[i] = __VERIFIER_nondet_char() [L521] i++ [L521] COND FALSE !(i < length - 1) [L526] nondetString[length-1] = '\0' [L527] return nondetString; [L537] char* p = build_nondet_String(); [L531] const char *p = s; [L532] EXPR \read(*p) [L532] COND TRUE *p != '\0' [L533] p = p+2 [L532] \read(*p) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 681.65 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.4 MB in the beginning and 67.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.31 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 65.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.45 ms. Allocated memory is still 100.7 MB. Free memory was 65.5 MB in the beginning and 64.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 734.26 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 40.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * CodeCheck took 6183.24 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 40.9 MB in the beginning and 72.6 MB in the end (delta: -31.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Witness Printer took 87.62 ms. Allocated memory is still 146.8 MB. Free memory was 72.6 MB in the beginning and 71.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...