./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a830784866b9d978d50fc7ce179ad1833e96bce936e06d428688d824a51c25e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 05:35:48,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 05:35:48,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 05:35:48,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 05:35:48,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 05:35:48,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 05:35:48,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 05:35:48,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 05:35:48,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 05:35:48,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 05:35:48,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 05:35:48,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 05:35:48,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 05:35:48,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 05:35:48,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 05:35:48,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 05:35:48,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 05:35:48,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 05:35:48,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 05:35:48,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 05:35:48,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 05:35:48,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 05:35:48,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 05:35:48,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 05:35:48,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 05:35:48,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 05:35:48,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 05:35:48,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 05:35:48,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 05:35:48,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 05:35:48,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 05:35:48,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 05:35:48,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 05:35:48,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 05:35:48,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 05:35:48,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 05:35:48,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 05:35:48,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 05:35:48,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 05:35:48,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 05:35:48,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 05:35:48,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/config/svcomp-Overflow-32bit-Kojak_Default.epf [2021-11-21 05:35:48,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 05:35:48,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 05:35:48,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 05:35:48,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-21 05:35:48,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 05:35:48,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 05:35:48,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 05:35:48,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 05:35:48,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 05:35:48,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 05:35:48,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 05:35:48,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 05:35:48,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 05:35:48,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 05:35:48,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 05:35:48,705 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 05:35:48,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 05:35:48,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 05:35:48,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 05:35:48,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 05:35:48,708 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-21 05:35:48,713 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-21 05:35:48,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 05:35:48,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 05:35:48,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 05:35:48,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 05:35:48,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 05:35:48,714 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-21 05:35:48,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 05:35:48,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 05:35:48,714 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_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a830784866b9d978d50fc7ce179ad1833e96bce936e06d428688d824a51c25e5 [2021-11-21 05:35:48,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 05:35:49,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 05:35:49,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 05:35:49,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 05:35:49,021 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 05:35:49,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/../../sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2021-11-21 05:35:49,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/data/f0b28bc24/676d9f091d5b4813befaaeebc8f1bc30/FLAG021a3912f [2021-11-21 05:35:49,554 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 05:35:49,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c [2021-11-21 05:35:49,565 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/data/f0b28bc24/676d9f091d5b4813befaaeebc8f1bc30/FLAG021a3912f [2021-11-21 05:35:49,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/data/f0b28bc24/676d9f091d5b4813befaaeebc8f1bc30 [2021-11-21 05:35:49,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 05:35:49,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 05:35:49,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 05:35:49,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 05:35:49,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 05:35:49,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:35:49" (1/1) ... [2021-11-21 05:35:49,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f8b100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:49, skipping insertion in model container [2021-11-21 05:35:49,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:35:49" (1/1) ... [2021-11-21 05:35:49,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 05:35:49,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 05:35:50,143 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_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c[514,527] [2021-11-21 05:35:50,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 05:35:50,153 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 05:35:50,168 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_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/sv-benchmarks/c/recursive-simple/id_b3_o2-1.c[514,527] [2021-11-21 05:35:50,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 05:35:50,183 INFO L208 MainTranslator]: Completed translation [2021-11-21 05:35:50,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50 WrapperNode [2021-11-21 05:35:50,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 05:35:50,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 05:35:50,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 05:35:50,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 05:35:50,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,217 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-11-21 05:35:50,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 05:35:50,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 05:35:50,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 05:35:50,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 05:35:50,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 05:35:50,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 05:35:50,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 05:35:50,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 05:35:50,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 05:35:50,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/z3 [2021-11-21 05:35:50,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-21 05:35:50,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-21 05:35:50,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 05:35:50,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 05:35:50,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 05:35:50,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 05:35:50,332 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-11-21 05:35:50,332 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-11-21 05:35:50,398 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 05:35:50,399 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 05:35:50,556 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 05:35:50,599 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 05:35:50,599 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 05:35:50,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:35:50 BoogieIcfgContainer [2021-11-21 05:35:50,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 05:35:50,603 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-21 05:35:50,603 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-21 05:35:50,614 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-21 05:35:50,615 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:35:50" (1/1) ... [2021-11-21 05:35:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 05:35:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:35:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 18 states and 19 transitions. [2021-11-21 05:35:50,691 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-21 05:35:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 05:35:50,696 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:35:50,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:35:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:35:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:35:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:35:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 21 states and 23 transitions. [2021-11-21 05:35:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-21 05:35:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 05:35:50,924 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:35:50,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:35:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 05:35:50,935 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 05:35:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 05:35:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 05:35:50,976 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 05:35:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 05:35:51,005 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2021-11-21 05:35:51,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 05:35:51 ImpRootNode [2021-11-21 05:35:51,056 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-21 05:35:51,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 05:35:51,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 05:35:51,057 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 05:35:51,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:35:50" (3/4) ... [2021-11-21 05:35:51,060 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 05:35:51,105 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/witness.graphml [2021-11-21 05:35:51,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 05:35:51,111 INFO L158 Benchmark]: Toolchain (without parser) took 1171.33ms. Allocated memory is still 123.7MB. Free memory was 87.3MB in the beginning and 70.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-21 05:35:51,112 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 05:35:51,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.81ms. Allocated memory is still 123.7MB. Free memory was 87.2MB in the beginning and 100.6MB in the end (delta: -13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 05:35:51,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.92ms. Allocated memory is still 123.7MB. Free memory was 100.6MB in the beginning and 99.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 05:35:51,115 INFO L158 Benchmark]: Boogie Preprocessor took 18.54ms. Allocated memory is still 123.7MB. Free memory was 99.3MB in the beginning and 98.5MB in the end (delta: 800.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 05:35:51,115 INFO L158 Benchmark]: RCFGBuilder took 364.45ms. Allocated memory is still 123.7MB. Free memory was 98.1MB in the beginning and 88.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 05:35:51,118 INFO L158 Benchmark]: CodeCheck took 452.75ms. Allocated memory is still 123.7MB. Free memory was 88.2MB in the beginning and 72.2MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-21 05:35:51,119 INFO L158 Benchmark]: Witness Printer took 48.70ms. Allocated memory is still 123.7MB. Free memory was 72.2MB in the beginning and 70.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 05:35:51,127 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, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, 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, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 4 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL id(input) VAL [\old(x)=-2147483648] [L7] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L8] x-1 VAL [\old(x)=-2147483648, x=-2147483648] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 123.7MB. Free memory is still 104.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.81ms. Allocated memory is still 123.7MB. Free memory was 87.2MB in the beginning and 100.6MB in the end (delta: -13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.92ms. Allocated memory is still 123.7MB. Free memory was 100.6MB in the beginning and 99.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.54ms. Allocated memory is still 123.7MB. Free memory was 99.3MB in the beginning and 98.5MB in the end (delta: 800.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 364.45ms. Allocated memory is still 123.7MB. Free memory was 98.1MB in the beginning and 88.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 452.75ms. Allocated memory is still 123.7MB. Free memory was 88.2MB in the beginning and 72.2MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 48.70ms. Allocated memory is still 123.7MB. Free memory was 72.2MB 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! [2021-11-21 05:35:51,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d838d2-f50d-49bd-b5b1-71ad33aa63b5/bin/ukojak-vF6T2TMglN/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(OVERFLOW)