./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-dietlibc/strtoull.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-dietlibc/strtoull.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ --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 64bit --witnessprinter.graph.data.programhash a24f374d1420975a1e7754ddde980f0b5d764d7e3a740acbfbc8098c38afffcd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 17:21:56,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 17:21:56,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 17:21:56,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 17:21:56,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 17:21:56,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 17:21:56,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 17:21:56,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 17:21:56,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 17:21:56,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 17:21:56,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 17:21:56,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 17:21:56,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 17:21:56,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 17:21:56,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 17:21:56,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 17:21:56,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 17:21:56,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 17:21:56,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 17:21:56,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 17:21:56,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 17:21:56,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 17:21:56,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 17:21:56,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 17:21:56,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 17:21:56,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 17:21:56,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 17:21:56,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 17:21:56,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 17:21:56,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 17:21:56,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 17:21:56,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 17:21:56,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 17:21:56,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 17:21:56,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 17:21:56,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 17:21:56,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 17:21:56,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 17:21:56,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 17:21:56,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 17:21:56,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 17:21:56,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf [2022-11-20 17:21:56,308 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 17:21:56,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 17:21:56,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 17:21:56,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-20 17:21:56,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 17:21:56,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 17:21:56,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 17:21:56,312 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 17:21:56,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 17:21:56,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 17:21:56,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 17:21:56,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 17:21:56,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 17:21:56,315 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 17:21:56,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 17:21:56,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 17:21:56,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 17:21:56,316 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 17:21:56,316 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 17:21:56,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 17:21:56,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:21:56,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 17:21:56,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 17:21:56,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 17:21:56,317 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 17:21:56,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 17:21:56,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 17:21:56,318 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_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a24f374d1420975a1e7754ddde980f0b5d764d7e3a740acbfbc8098c38afffcd [2022-11-20 17:21:56,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 17:21:56,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 17:21:56,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 17:21:56,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 17:21:56,666 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 17:21:56,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/termination-dietlibc/strtoull.i [2022-11-20 17:21:59,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 17:22:00,058 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 17:22:00,059 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/sv-benchmarks/c/termination-dietlibc/strtoull.i [2022-11-20 17:22:00,071 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/data/2b91ce4f6/6b8e2b39b2ba4447bd9542dd366e3e57/FLAG2a83f69f2 [2022-11-20 17:22:00,085 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/data/2b91ce4f6/6b8e2b39b2ba4447bd9542dd366e3e57 [2022-11-20 17:22:00,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 17:22:00,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 17:22:00,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 17:22:00,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 17:22:00,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 17:22:00,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13cc55d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00, skipping insertion in model container [2022-11-20 17:22:00,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 17:22:00,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 17:22:00,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:22:00,434 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 17:22:00,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:22:00,512 INFO L208 MainTranslator]: Completed translation [2022-11-20 17:22:00,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00 WrapperNode [2022-11-20 17:22:00,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 17:22:00,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 17:22:00,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 17:22:00,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 17:22:00,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,600 INFO L138 Inliner]: procedures = 116, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 179 [2022-11-20 17:22:00,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 17:22:00,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 17:22:00,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 17:22:00,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 17:22:00,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 17:22:00,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 17:22:00,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 17:22:00,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 17:22:00,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:22:00" (1/1) ... [2022-11-20 17:22:00,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:22:00,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 17:22:00,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 17:22:00,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 17:22:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 17:22:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 17:22:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 17:22:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 17:22:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 17:22:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 17:22:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 17:22:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 17:22:00,882 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 17:22:00,887 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 17:22:01,454 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 17:22:01,568 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 17:22:01,568 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 17:22:01,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:22:01 BoogieIcfgContainer [2022-11-20 17:22:01,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 17:22:01,574 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 17:22:01,582 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 17:22:01,592 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 17:22:01,599 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:22:01" (1/1) ... [2022-11-20 17:22:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 17:22:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 78 states and 93 transitions. [2022-11-20 17:22:01,669 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2022-11-20 17:22:01,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 17:22:01,672 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:01,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 79 states and 94 transitions. [2022-11-20 17:22:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2022-11-20 17:22:01,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 17:22:01,953 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:01,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 81 states and 97 transitions. [2022-11-20 17:22:02,069 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2022-11-20 17:22:02,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 17:22:02,069 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 84 states and 101 transitions. [2022-11-20 17:22:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2022-11-20 17:22:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 17:22:02,139 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:02,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 88 states and 109 transitions. [2022-11-20 17:22:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2022-11-20 17:22:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 17:22:02,407 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:02,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:02,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:02,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 91 states and 113 transitions. [2022-11-20 17:22:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2022-11-20 17:22:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 17:22:02,513 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:02,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 92 states and 116 transitions. [2022-11-20 17:22:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 116 transitions. [2022-11-20 17:22:02,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 17:22:02,677 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 17:22:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 94 states and 117 transitions. [2022-11-20 17:22:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2022-11-20 17:22:02,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 17:22:02,864 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:02,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 17:22:03,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 94 states and 116 transitions. [2022-11-20 17:22:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2022-11-20 17:22:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 17:22:03,026 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:03,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 98 states and 125 transitions. [2022-11-20 17:22:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2022-11-20 17:22:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 17:22:03,521 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:03,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 98 states and 124 transitions. [2022-11-20 17:22:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2022-11-20 17:22:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 17:22:03,558 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:03,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 17:22:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 99 states and 125 transitions. [2022-11-20 17:22:03,666 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2022-11-20 17:22:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 17:22:03,667 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:03,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 104 states and 132 transitions. [2022-11-20 17:22:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2022-11-20 17:22:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 17:22:04,108 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:04,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:22:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 103 states and 131 transitions. [2022-11-20 17:22:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2022-11-20 17:22:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 17:22:04,253 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:04,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:22:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 17:22:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:22:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 105 states and 133 transitions. [2022-11-20 17:22:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2022-11-20 17:22:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 17:22:04,498 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:22:04,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:22:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:22:04,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 17:22:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:22:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:22:04,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 17:22:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:22:04,662 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 15 iterations. [2022-11-20 17:22:04,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 05:22:04 ImpRootNode [2022-11-20 17:22:04,730 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-20 17:22:04,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 17:22:04,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 17:22:04,731 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 17:22:04,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:22:01" (3/4) ... [2022-11-20 17:22:04,733 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 17:22:04,793 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24cf7cf-8d49-4f9a-b58c-cc63a31d6252/bin/ukojak-pZX7IvK2PQ/witness.graphml [2022-11-20 17:22:04,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 17:22:04,794 INFO L158 Benchmark]: Toolchain (without parser) took 4704.70ms. Allocated memory is still 151.0MB. Free memory was 107.1MB in the beginning and 53.6MB in the end (delta: 53.5MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2022-11-20 17:22:04,794 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 113.2MB. Free memory was 57.6MB in the beginning and 57.5MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 17:22:04,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.35ms. Allocated memory is still 151.0MB. Free memory was 107.1MB in the beginning and 90.2MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 17:22:04,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.25ms. Allocated memory is still 151.0MB. Free memory was 90.2MB in the beginning and 87.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:22:04,796 INFO L158 Benchmark]: Boogie Preprocessor took 52.58ms. Allocated memory is still 151.0MB. Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:22:04,797 INFO L158 Benchmark]: RCFGBuilder took 919.06ms. Allocated memory is still 151.0MB. Free memory was 85.6MB in the beginning and 102.4MB in the end (delta: -16.8MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2022-11-20 17:22:04,797 INFO L158 Benchmark]: CodeCheck took 3156.44ms. Allocated memory is still 151.0MB. Free memory was 102.4MB in the beginning and 55.7MB in the end (delta: 46.7MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2022-11-20 17:22:04,798 INFO L158 Benchmark]: Witness Printer took 62.69ms. Allocated memory is still 151.0MB. Free memory was 55.7MB in the beginning and 53.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:22:04,800 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, 78 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 15, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 593 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 450 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 240 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1397 IncrementalHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 240 mSolverCounterUnsat, 61 mSDtfsCounter, 1397 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 955 GetRequests, 889 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1739 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 13/22 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: 519]: integer overflow possible integer overflow possible We found a FailurePath: [L551] int in_len = __VERIFIER_nondet_int(); [L552] COND FALSE !(in_len < 1) [L553] char* in = __builtin_alloca (in_len); [L554] int i=0; VAL [__builtin_alloca (in_len)={2:0}, i=0, in={2:0}, in_len=1] [L554] EXPR in_len-1 VAL [__builtin_alloca (in_len)={2:0}, i=0, in={2:0}, in_len=1] [L554] COND FALSE !(i