./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL --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 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 08:01:01,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 08:01:01,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 08:01:01,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 08:01:01,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 08:01:01,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 08:01:01,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 08:01:01,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 08:01:01,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 08:01:01,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 08:01:01,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 08:01:01,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 08:01:01,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 08:01:01,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 08:01:01,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 08:01:01,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 08:01:01,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 08:01:01,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 08:01:01,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 08:01:01,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 08:01:01,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 08:01:01,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 08:01:01,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 08:01:01,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 08:01:01,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 08:01:01,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 08:01:01,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 08:01:01,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 08:01:01,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 08:01:01,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 08:01:01,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 08:01:01,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 08:01:01,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 08:01:01,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 08:01:01,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 08:01:01,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 08:01:01,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 08:01:01,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 08:01:01,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 08:01:01,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 08:01:01,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 08:01:01,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-25 08:01:01,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 08:01:01,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 08:01:01,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 08:01:01,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 08:01:01,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 08:01:01,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 08:01:01,222 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 08:01:01,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 08:01:01,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 08:01:01,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 08:01:01,229 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 08:01:01,230 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 08:01:01,230 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 08:01:01,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 08:01:01,230 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 08:01:01,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 08:01:01,230 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-25 08:01:01,231 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-25 08:01:01,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 08:01:01,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 08:01:01,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 08:01:01,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 08:01:01,232 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-25 08:01:01,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 08:01:01,232 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_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 [2021-11-25 08:01:01,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 08:01:01,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 08:01:01,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 08:01:01,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 08:01:01,536 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 08:01:01,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-11-25 08:01:01,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/data/909abf75e/3f47a6b33c904143a9a6afa0b03fdd8b/FLAGf4a93dee5 [2021-11-25 08:01:02,181 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 08:01:02,181 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-11-25 08:01:02,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/data/909abf75e/3f47a6b33c904143a9a6afa0b03fdd8b/FLAGf4a93dee5 [2021-11-25 08:01:02,488 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/data/909abf75e/3f47a6b33c904143a9a6afa0b03fdd8b [2021-11-25 08:01:02,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 08:01:02,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 08:01:02,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 08:01:02,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 08:01:02,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 08:01:02,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:01:02" (1/1) ... [2021-11-25 08:01:02,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9d3505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:02, skipping insertion in model container [2021-11-25 08:01:02,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:01:02" (1/1) ... [2021-11-25 08:01:02,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 08:01:02,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 08:01:02,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 08:01:02,938 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 08:01:02,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 08:01:03,008 INFO L208 MainTranslator]: Completed translation [2021-11-25 08:01:03,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03 WrapperNode [2021-11-25 08:01:03,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 08:01:03,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 08:01:03,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 08:01:03,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 08:01:03,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,084 INFO L137 Inliner]: procedures = 116, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2021-11-25 08:01:03,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 08:01:03,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 08:01:03,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 08:01:03,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 08:01:03,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 08:01:03,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 08:01:03,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 08:01:03,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 08:01:03,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 08:01:03,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/z3 [2021-11-25 08:01:03,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-25 08:01:03,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-25 08:01:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 08:01:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 08:01:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 08:01:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 08:01:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 08:01:03,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 08:01:03,316 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 08:01:03,318 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 08:01:03,642 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 08:01:03,698 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 08:01:03,698 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 08:01:03,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:01:03 BoogieIcfgContainer [2021-11-25 08:01:03,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 08:01:03,702 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-25 08:01:03,702 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-25 08:01:03,713 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-25 08:01:03,713 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:01:03" (1/1) ... [2021-11-25 08:01:03,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 08:01:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2021-11-25 08:01:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-11-25 08:01:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 08:01:03,783 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:03,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2021-11-25 08:01:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-11-25 08:01:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 08:01:04,014 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:04,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2021-11-25 08:01:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-11-25 08:01:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 08:01:04,332 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:04,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 46 states and 55 transitions. [2021-11-25 08:01:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2021-11-25 08:01:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 08:01:04,498 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:04,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 46 states and 54 transitions. [2021-11-25 08:01:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2021-11-25 08:01:04,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 08:01:04,747 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:04,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 49 states and 61 transitions. [2021-11-25 08:01:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2021-11-25 08:01:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 08:01:05,646 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:05,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:05,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 51 states and 65 transitions. [2021-11-25 08:01:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2021-11-25 08:01:05,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 08:01:05,838 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:05,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 53 states and 68 transitions. [2021-11-25 08:01:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-11-25 08:01:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 08:01:05,997 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:05,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 55 states and 71 transitions. [2021-11-25 08:01:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2021-11-25 08:01:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 08:01:06,698 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:06,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 52 states and 65 transitions. [2021-11-25 08:01:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2021-11-25 08:01:07,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 08:01:07,440 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:07,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 08:01:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 52 states and 64 transitions. [2021-11-25 08:01:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2021-11-25 08:01:08,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 08:01:08,062 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:08,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 51 states and 63 transitions. [2021-11-25 08:01:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2021-11-25 08:01:08,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 08:01:08,093 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:08,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 08:01:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 53 states and 66 transitions. [2021-11-25 08:01:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2021-11-25 08:01:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 08:01:08,345 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:08,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 52 states and 65 transitions. [2021-11-25 08:01:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2021-11-25 08:01:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 08:01:08,377 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:08,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 08:01:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 53 states and 66 transitions. [2021-11-25 08:01:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2021-11-25 08:01:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 08:01:08,469 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:08,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 08:01:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 47 states and 57 transitions. [2021-11-25 08:01:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2021-11-25 08:01:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 08:01:08,518 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:08,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 08:01:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 08:01:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 08:01:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 53 states and 71 transitions. [2021-11-25 08:01:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2021-11-25 08:01:09,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 08:01:09,915 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 08:01:09,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 08:01:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 08:01:09,932 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 08:01:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 08:01:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 08:01:09,997 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 08:01:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 08:01:10,040 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 17 iterations. [2021-11-25 08:01:10,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 08:01:10 ImpRootNode [2021-11-25 08:01:10,098 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-25 08:01:10,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 08:01:10,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 08:01:10,099 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 08:01:10,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:01:03" (3/4) ... [2021-11-25 08:01:10,102 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 08:01:10,177 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e035865-8fae-4586-8be1-93d7e19c36e4/bin/ukojak-d1pc8ZmBRL/witness.graphml [2021-11-25 08:01:10,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 08:01:10,178 INFO L158 Benchmark]: Toolchain (without parser) took 7685.65ms. Allocated memory was 86.0MB in the beginning and 140.5MB in the end (delta: 54.5MB). Free memory was 53.7MB in the beginning and 76.7MB in the end (delta: -23.0MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2021-11-25 08:01:10,179 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 86.0MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 08:01:10,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.65ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 53.5MB in the beginning and 84.5MB in the end (delta: -31.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 08:01:10,181 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.50ms. Allocated memory is still 113.2MB. Free memory was 84.5MB in the beginning and 82.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 08:01:10,181 INFO L158 Benchmark]: Boogie Preprocessor took 29.25ms. Allocated memory is still 113.2MB. Free memory was 82.4MB in the beginning and 81.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 08:01:10,182 INFO L158 Benchmark]: RCFGBuilder took 585.97ms. Allocated memory is still 113.2MB. Free memory was 81.1MB in the beginning and 64.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 08:01:10,183 INFO L158 Benchmark]: CodeCheck took 6396.86ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 64.4MB in the beginning and 78.8MB in the end (delta: -14.4MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-11-25 08:01:10,183 INFO L158 Benchmark]: Witness Printer took 78.48ms. Allocated memory is still 140.5MB. Free memory was 78.8MB in the beginning and 76.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 08:01:10,188 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, 44 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 17, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 607 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 416 mSDsluCounter, 212 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 459 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1688 IncrementalHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 459 mSolverCounterUnsat, 134 mSDtfsCounter, 1688 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 914 GetRequests, 771 SyntacticMatches, 21 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6741 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 571 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 12/25 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: 529]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND FALSE !(length < 1) [L518] COND FALSE !(length % 2 == 0) [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, length=1, length++=3] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() [L521] i++ VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1, length++=3] [L521] COND FALSE !(i < length) [L526] i=0 VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, i=0, length=1, length++=3] [L526] COND TRUE i