./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/simple-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:17:33,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:17:33,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:17:33,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:17:33,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:17:33,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:17:33,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:17:33,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:17:33,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:17:33,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:17:33,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:17:33,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:17:33,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:17:33,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:17:33,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:17:33,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:17:33,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:17:33,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:17:33,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:17:33,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:17:33,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:17:33,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:17:33,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:17:33,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:17:33,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:17:33,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:17:33,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:17:33,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:17:33,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:17:33,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:17:33,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:17:33,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:17:33,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:17:33,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:17:33,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:17:33,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:17:33,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:17:33,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:17:33,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:17:33,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:17:33,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:17:33,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 01:17:33,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:17:33,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:17:33,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:17:33,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 01:17:33,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:17:33,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:17:33,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:17:33,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:17:33,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:17:33,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:17:33,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:17:33,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:17:33,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:17:33,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:17:33,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:17:33,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:17:33,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:17:33,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:17:33,226 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:17:33,226 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:17:33,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:17:33,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:17:33,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:17:33,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:17:33,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:17:33,228 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:17:33,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:17:33,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:17:33,229 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_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b [2021-11-23 01:17:33,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:17:33,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:17:33,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:17:33,642 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:17:33,644 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:17:33,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/list-properties/simple-1.i [2021-11-23 01:17:33,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/data/c7ae4b072/8fe477b81e6a4522b65785f3865af4eb/FLAG515699dc9 [2021-11-23 01:17:34,356 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:17:34,357 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/sv-benchmarks/c/list-properties/simple-1.i [2021-11-23 01:17:34,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/data/c7ae4b072/8fe477b81e6a4522b65785f3865af4eb/FLAG515699dc9 [2021-11-23 01:17:34,589 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/data/c7ae4b072/8fe477b81e6a4522b65785f3865af4eb [2021-11-23 01:17:34,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:17:34,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:17:34,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:17:34,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:17:34,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:17:34,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:17:34" (1/1) ... [2021-11-23 01:17:34,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385d06e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:34, skipping insertion in model container [2021-11-23 01:17:34,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:17:34" (1/1) ... [2021-11-23 01:17:34,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:17:34,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:17:35,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/sv-benchmarks/c/list-properties/simple-1.i[23237,23250] [2021-11-23 01:17:35,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:17:35,044 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:17:35,092 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/sv-benchmarks/c/list-properties/simple-1.i[23237,23250] [2021-11-23 01:17:35,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:17:35,133 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:17:35,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35 WrapperNode [2021-11-23 01:17:35,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:17:35,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:17:35,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:17:35,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:17:35,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,185 INFO L137 Inliner]: procedures = 124, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-11-23 01:17:35,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:17:35,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:17:35,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:17:35,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:17:35,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:17:35,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:17:35,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:17:35,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:17:35,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:17:35,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:17:35,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:17:35,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:17:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-23 01:17:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-23 01:17:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:17:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:17:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:17:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:17:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:17:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:17:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:17:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:17:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:17:35,496 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:17:35,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:17:35,551 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-23 01:17:35,745 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:17:35,762 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:17:35,763 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 01:17:35,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:17:35 BoogieIcfgContainer [2021-11-23 01:17:35,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:17:35,767 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:17:35,767 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:17:35,778 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:17:35,779 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:17:35" (1/1) ... [2021-11-23 01:17:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:17:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:17:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 18 states and 23 transitions. [2021-11-23 01:17:35,852 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-11-23 01:17:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 01:17:35,854 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:17:35,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:17:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:17:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:17:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:17:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2021-11-23 01:17:36,039 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-23 01:17:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 01:17:36,039 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:17:36,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:17:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:17:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:17:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:17:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 23 states and 30 transitions. [2021-11-23 01:17:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-11-23 01:17:36,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 01:17:36,324 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:17:36,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:17:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:17:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:17:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:17:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 30 states and 45 transitions. [2021-11-23 01:17:37,231 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 45 transitions. [2021-11-23 01:17:37,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 01:17:37,234 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:17:37,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:17:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:17:37,263 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:17:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:17:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:17:37,395 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:17:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:17:37,453 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2021-11-23 01:17:37,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:17:37 ImpRootNode [2021-11-23 01:17:37,495 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:17:37,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:17:37,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:17:37,497 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:17:37,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:17:35" (3/4) ... [2021-11-23 01:17:37,500 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 01:17:37,552 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:17:37,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:17:37,553 INFO L158 Benchmark]: Toolchain (without parser) took 2959.26ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 61.6MB in the beginning and 70.5MB in the end (delta: -9.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 01:17:37,554 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 83.9MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:17:37,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.43ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 61.2MB in the beginning and 69.6MB in the end (delta: -8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 01:17:37,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.04ms. Allocated memory is still 100.7MB. Free memory was 69.6MB in the beginning and 67.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:17:37,556 INFO L158 Benchmark]: Boogie Preprocessor took 31.92ms. Allocated memory is still 100.7MB. Free memory was 67.7MB in the beginning and 66.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:17:37,557 INFO L158 Benchmark]: RCFGBuilder took 546.32ms. Allocated memory is still 100.7MB. Free memory was 66.4MB in the beginning and 54.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 01:17:37,557 INFO L158 Benchmark]: CodeCheck took 1727.93ms. Allocated memory is still 100.7MB. Free memory was 54.6MB in the beginning and 72.6MB in the end (delta: -18.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:17:37,558 INFO L158 Benchmark]: Witness Printer took 55.71ms. Allocated memory is still 100.7MB. Free memory was 72.3MB in the beginning and 70.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:17:37,562 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 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 4, 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, 84 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 44 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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: 549]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; [L536] a->h = 2 VAL [a={-1:0}, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] p->h = 1 [L539] t = (List) malloc(sizeof(struct node)) [L540] COND FALSE !(t == 0) VAL [a={-1:0}, p={-1:0}, t={-2:0}] [L541] p->n = t [L542] EXPR p->n [L542] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a VAL [a={-1:0}, p={-1:0}, t={-2:0}] [L547] COND TRUE p!=0 [L548] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=1, t={-2:0}] [L548] COND TRUE p->h != 2 [L549] reach_error() VAL [a={-1:0}, p={-1:0}, t={-2:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 83.9MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 537.43ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 61.2MB in the beginning and 69.6MB in the end (delta: -8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.04ms. Allocated memory is still 100.7MB. Free memory was 69.6MB in the beginning and 67.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.92ms. Allocated memory is still 100.7MB. Free memory was 67.7MB in the beginning and 66.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 546.32ms. Allocated memory is still 100.7MB. Free memory was 66.4MB in the beginning and 54.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 1727.93ms. Allocated memory is still 100.7MB. Free memory was 54.6MB in the beginning and 72.6MB in the end (delta: -18.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 55.71ms. Allocated memory is still 100.7MB. Free memory was 72.3MB in the beginning and 70.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 01:17:37,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_098fbc98-fab8-4c1e-8b0a-b81adacfb3b3/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE