./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi --witnessprinter.witness.filename witness --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 43bdd483f8f8c9140c48bb552d47a53af6de35d95ccd0d8fbcab6e27a4ad4554 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:56:19,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:56:19,850 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-24 22:56:19,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:56:19,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 22:56:19,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:56:19,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:56:19,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 22:56:19,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:56:19,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:56:19,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:56:19,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:56:19,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:56:19,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:56:19,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:56:19,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:56:19,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:56:19,910 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 22:56:19,911 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:56:19,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:56:19,911 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:56:19,913 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:56:19,913 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:56:19,914 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:56:19,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:56:19,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:56:19,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:56:19,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:56:19,916 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:56:19,916 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 22:56:19,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:56:19,918 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:56:19,918 INFO L153 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_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43bdd483f8f8c9140c48bb552d47a53af6de35d95ccd0d8fbcab6e27a4ad4554 [2023-11-24 22:56:20,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:56:20,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:56:20,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:56:20,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:56:20,328 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:56:20,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_good.i [2023-11-24 22:56:23,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:56:23,892 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:56:23,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_02_good.i [2023-11-24 22:56:23,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/data/5e6ec8b2c/96a36ab46d2d4e39aae4770520f60094/FLAGabb1c0df0 [2023-11-24 22:56:23,954 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/data/5e6ec8b2c/96a36ab46d2d4e39aae4770520f60094 [2023-11-24 22:56:23,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:56:23,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:56:23,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:56:23,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:56:23,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:56:23,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:56:23" (1/1) ... [2023-11-24 22:56:23,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547396a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:23, skipping insertion in model container [2023-11-24 22:56:23,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:56:23" (1/1) ... [2023-11-24 22:56:24,053 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:56:25,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:56:25,186 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:56:25,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:56:25,420 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:25,420 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:25,421 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:25,421 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:25,421 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:25,429 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:56:25,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25 WrapperNode [2023-11-24 22:56:25,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:56:25,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:56:25,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:56:25,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:56:25,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,491 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,540 INFO L138 Inliner]: procedures = 503, calls = 86, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 139 [2023-11-24 22:56:25,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:56:25,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:56:25,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:56:25,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:56:25,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,610 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:56:25,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:56:25,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:56:25,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:56:25,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:25" (1/1) ... [2023-11-24 22:56:25,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:56:25,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:56:25,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:56:25,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:56:25,773 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-24 22:56:25,773 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-24 22:56:25,774 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 22:56:25,774 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 22:56:25,775 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 22:56:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:56:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 22:56:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:56:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:56:25,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:56:25,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:56:25,776 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 22:56:25,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:56:25,946 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:56:25,948 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:56:26,226 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:56:26,270 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:56:26,270 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-24 22:56:26,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:26 BoogieIcfgContainer [2023-11-24 22:56:26,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:56:26,273 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:56:26,274 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:56:26,285 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:56:26,285 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:26" (1/1) ... [2023-11-24 22:56:26,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:56:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 62 states and 82 transitions. [2023-11-24 22:56:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2023-11-24 22:56:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 22:56:26,360 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:26,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:56:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 60 states and 77 transitions. [2023-11-24 22:56:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2023-11-24 22:56:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 22:56:26,665 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:26,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:56:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 59 states and 76 transitions. [2023-11-24 22:56:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2023-11-24 22:56:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 22:56:26,927 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:26,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:56:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 64 states and 82 transitions. [2023-11-24 22:56:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2023-11-24 22:56:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 22:56:27,274 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:27,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 22:56:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 58 states and 75 transitions. [2023-11-24 22:56:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2023-11-24 22:56:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 22:56:27,565 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:27,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 22:56:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 58 states and 73 transitions. [2023-11-24 22:56:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2023-11-24 22:56:27,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 22:56:27,645 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:27,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 22:56:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:27,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 57 states and 72 transitions. [2023-11-24 22:56:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2023-11-24 22:56:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 22:56:27,801 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 22:56:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 61 states and 77 transitions. [2023-11-24 22:56:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2023-11-24 22:56:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 22:56:28,033 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:28,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:56:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 56 states and 71 transitions. [2023-11-24 22:56:28,235 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2023-11-24 22:56:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 22:56:28,240 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:28,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:56:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 53 states and 65 transitions. [2023-11-24 22:56:28,450 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2023-11-24 22:56:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 22:56:28,451 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:28,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:56:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 52 states and 64 transitions. [2023-11-24 22:56:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2023-11-24 22:56:28,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 22:56:28,784 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:28,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:56:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 51 states and 62 transitions. [2023-11-24 22:56:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2023-11-24 22:56:29,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 22:56:29,033 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:29,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:56:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 50 states and 61 transitions. [2023-11-24 22:56:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2023-11-24 22:56:29,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 22:56:29,438 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 13 iterations. [2023-11-24 22:56:29,447 INFO L751 CodeCheckObserver]: All specifications hold 8 specifications checked. All of them hold [2023-11-24 22:56:29,526 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-24 22:56:29,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:56:29 ImpRootNode [2023-11-24 22:56:29,531 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:56:29,532 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:56:29,532 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:56:29,544 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:56:29,544 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:26" (3/4) ... [2023-11-24 22:56:29,547 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:56:29,550 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2023-11-24 22:56:29,550 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2023-11-24 22:56:29,556 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-11-24 22:56:29,557 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-24 22:56:29,557 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 22:56:29,558 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 22:56:29,558 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 22:56:29,668 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 22:56:29,669 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/witness.yml [2023-11-24 22:56:29,669 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:56:29,670 INFO L158 Benchmark]: Toolchain (without parser) took 5708.29ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 87.6MB in the beginning and 123.9MB in the end (delta: -36.4MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2023-11-24 22:56:29,670 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory was 72.8MB in the beginning and 72.7MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:56:29,671 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1465.02ms. Allocated memory is still 134.2MB. Free memory was 87.0MB in the beginning and 48.5MB in the end (delta: 38.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-24 22:56:29,671 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.33ms. Allocated memory is still 134.2MB. Free memory was 48.5MB in the beginning and 45.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:29,672 INFO L158 Benchmark]: Boogie Preprocessor took 72.75ms. Allocated memory is still 134.2MB. Free memory was 45.2MB in the beginning and 43.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:29,672 INFO L158 Benchmark]: RCFGBuilder took 655.14ms. Allocated memory is still 134.2MB. Free memory was 43.2MB in the beginning and 86.2MB in the end (delta: -43.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:56:29,672 INFO L158 Benchmark]: CodeCheck took 3258.05ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 86.2MB in the beginning and 44.0MB in the end (delta: 42.1MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2023-11-24 22:56:29,673 INFO L158 Benchmark]: Witness Printer took 137.48ms. Allocated memory is still 161.5MB. Free memory was 44.0MB in the beginning and 123.9MB in the end (delta: -79.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:29,675 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 62 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 13, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1004 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 816 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196 mSDsCounter, 188 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 460 IncrementalHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 188 mSolverCounterUnsat, 620 mSDtfsCounter, 460 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1921 GetRequests, 1864 SyntacticMatches, 9 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 38/38 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 - PositiveResult [Line: 1574]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1574]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1606]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1606]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1631]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1631]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1648]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1648]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 1666]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory was 72.8MB in the beginning and 72.7MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1465.02ms. Allocated memory is still 134.2MB. Free memory was 87.0MB in the beginning and 48.5MB in the end (delta: 38.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.33ms. Allocated memory is still 134.2MB. Free memory was 48.5MB in the beginning and 45.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.75ms. Allocated memory is still 134.2MB. Free memory was 45.2MB in the beginning and 43.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 655.14ms. Allocated memory is still 134.2MB. Free memory was 43.2MB in the beginning and 86.2MB in the end (delta: -43.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * CodeCheck took 3258.05ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 86.2MB in the beginning and 44.0MB in the end (delta: 42.1MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. * Witness Printer took 137.48ms. Allocated memory is still 161.5MB. Free memory was 44.0MB in the beginning and 123.9MB in the end (delta: -79.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-24 22:56:29,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163abeca-1735-45d2-b970-eb3f634cbb15/bin/ukojak-verify-afCqCEvfdi/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 Result: TRUE