./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL --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 0f524dfca5f0202d0fd177523d80616178d3161e02e0b6323b3373f89ab74a57 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:04:07,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:04:07,465 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 03:04:07,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:04:07,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:04:07,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:04:07,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:04:07,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:04:07,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:04:07,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:04:07,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:04:07,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:04:07,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:04:07,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:04:07,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:04:07,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:04:07,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:04:07,536 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:04:07,536 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:04:07,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:04:07,537 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:04:07,538 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:04:07,538 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:04:07,539 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:04:07,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:04:07,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:04:07,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:04:07,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:04:07,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:04:07,542 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:04:07,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:04:07,543 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:04:07,543 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_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f524dfca5f0202d0fd177523d80616178d3161e02e0b6323b3373f89ab74a57 [2023-11-19 03:04:07,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:04:07,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:04:07,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:04:07,845 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:04:07,845 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:04:07,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_good.i [2023-11-19 03:04:10,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:04:11,402 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:04:11,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_good.i [2023-11-19 03:04:11,439 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/data/7cd9e2f88/1a66ef8a190640eaa9c7fe00ef4a5649/FLAG2715c6004 [2023-11-19 03:04:11,465 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/data/7cd9e2f88/1a66ef8a190640eaa9c7fe00ef4a5649 [2023-11-19 03:04:11,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:04:11,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:04:11,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:04:11,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:04:11,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:04:11,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:11" (1/1) ... [2023-11-19 03:04:11,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab8997b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:11, skipping insertion in model container [2023-11-19 03:04:11,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:11" (1/1) ... [2023-11-19 03:04:11,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:04:11,935 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:04:12,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:04:12,516 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:04:12,549 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:04:12,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:04:12,833 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:04:12,833 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:04:12,833 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:04:12,833 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:04:12,834 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:04:12,834 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:04:12,842 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:04:12,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12 WrapperNode [2023-11-19 03:04:12,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:04:12,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:04:12,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:04:12,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:04:12,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:12,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:12,966 INFO L138 Inliner]: procedures = 510, calls = 77, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 79 [2023-11-19 03:04:12,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:04:12,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:04:12,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:04:12,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:04:12,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:12,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:12,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:13,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:13,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:13,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:13,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:13,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:13,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:04:13,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:04:13,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:04:13,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:04:13,037 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:12" (1/1) ... [2023-11-19 03:04:13,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:04:13,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:04:13,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:04:13,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:04:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-19 03:04:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-19 03:04:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:04:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:04:13,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:04:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:04:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 03:04:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:04:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:04:13,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:04:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:04:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:04:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:04:13,291 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:04:13,294 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:04:13,475 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:04:13,518 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:04:13,518 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:04:13,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:13 BoogieIcfgContainer [2023-11-19 03:04:13,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:04:13,524 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:04:13,524 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:04:13,534 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:04:13,534 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:13" (1/1) ... [2023-11-19 03:04:13,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:04:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:04:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2023-11-19 03:04:13,593 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-19 03:04:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 03:04:13,596 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:04:13,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:04:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:04:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:04:14,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:04:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 27 states and 32 transitions. [2023-11-19 03:04:14,068 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-19 03:04:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 03:04:14,068 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:04:14,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:04:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:04:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:04:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:04:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 26 states and 31 transitions. [2023-11-19 03:04:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-11-19 03:04:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 03:04:14,234 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:04:14,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:04:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:04:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:04:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:04:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 25 states and 30 transitions. [2023-11-19 03:04:14,418 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-19 03:04:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 03:04:14,419 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:04:14,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:04:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:04:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:04:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:04:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 29 states and 35 transitions. [2023-11-19 03:04:14,783 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-11-19 03:04:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 03:04:14,785 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:04:14,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:04:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:04:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:04:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:04:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 24 states and 29 transitions. [2023-11-19 03:04:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-11-19 03:04:15,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 03:04:15,032 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2023-11-19 03:04:15,041 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-19 03:04:15,078 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-19 03:04:15,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:04:15 ImpRootNode [2023-11-19 03:04:15,082 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:04:15,084 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:04:15,084 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:04:15,084 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:04:15,084 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:13" (3/4) ... [2023-11-19 03:04:15,088 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 03:04:15,092 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2023-11-19 03:04:15,092 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2023-11-19 03:04:15,101 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2023-11-19 03:04:15,101 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-19 03:04:15,102 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 03:04:15,102 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 03:04:15,232 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 03:04:15,233 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/witness.yml [2023-11-19 03:04:15,233 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:04:15,234 INFO L158 Benchmark]: Toolchain (without parser) took 3760.74ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 126.4MB in the beginning and 103.2MB in the end (delta: 23.2MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2023-11-19 03:04:15,234 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 130.0MB. Free memory is still 101.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:04:15,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1367.02ms. Allocated memory is still 161.5MB. Free memory was 126.4MB in the beginning and 115.4MB in the end (delta: 11.0MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2023-11-19 03:04:15,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.37ms. Allocated memory is still 161.5MB. Free memory was 115.4MB in the beginning and 112.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:04:15,236 INFO L158 Benchmark]: Boogie Preprocessor took 68.04ms. Allocated memory is still 161.5MB. Free memory was 112.1MB in the beginning and 110.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:04:15,236 INFO L158 Benchmark]: RCFGBuilder took 487.07ms. Allocated memory is still 161.5MB. Free memory was 110.0MB in the beginning and 93.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 03:04:15,237 INFO L158 Benchmark]: CodeCheck took 1558.56ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 93.3MB in the beginning and 109.3MB in the end (delta: -16.0MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-11-19 03:04:15,237 INFO L158 Benchmark]: Witness Printer took 149.65ms. Allocated memory is still 195.0MB. Free memory was 109.3MB in the beginning and 103.2MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 03:04:15,239 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, 28 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 164 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 76 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 442 GetRequests, 420 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 1620]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1620]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1628]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1628]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 1584]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 130.0MB. Free memory is still 101.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1367.02ms. Allocated memory is still 161.5MB. Free memory was 126.4MB in the beginning and 115.4MB in the end (delta: 11.0MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.37ms. Allocated memory is still 161.5MB. Free memory was 115.4MB in the beginning and 112.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.04ms. Allocated memory is still 161.5MB. Free memory was 112.1MB in the beginning and 110.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.07ms. Allocated memory is still 161.5MB. Free memory was 110.0MB in the beginning and 93.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1558.56ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 93.3MB in the beginning and 109.3MB in the end (delta: -16.0MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Witness Printer took 149.65ms. Allocated memory is still 195.0MB. Free memory was 109.3MB in the beginning and 103.2MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-19 03:04:15,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdeab4cf-d62f-451d-923d-524342c65f77/bin/ukojak-verify-G8NBE6pJGL/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