./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC --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 8e002edff03e85a930a4bd074978aadf43bc2fc41e1f585376197cfc6401e345 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:12:16,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:12:16,641 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:12:16,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:12:16,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:12:16,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:12:16,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:12:16,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:12:16,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:12:16,696 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:12:16,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:12:16,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:12:16,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:12:16,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:12:16,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:12:16,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:12:16,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:12:16,702 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:12:16,703 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:12:16,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:12:16,704 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:12:16,705 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:12:16,706 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:12:16,706 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:12:16,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:12:16,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:12:16,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:12:16,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:12:16,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:12:16,709 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:12:16,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:12:16,711 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:12:16,711 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_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e002edff03e85a930a4bd074978aadf43bc2fc41e1f585376197cfc6401e345 [2023-11-23 20:12:17,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:12:17,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:12:17,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:12:17,106 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:12:17,107 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:12:17,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_good.i [2023-11-23 20:12:20,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:12:20,903 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:12:20,904 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_good.i [2023-11-23 20:12:20,945 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/data/79656ea95/ad577e8ad74749969f67c159f679795a/FLAG24cb736ac [2023-11-23 20:12:20,965 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/data/79656ea95/ad577e8ad74749969f67c159f679795a [2023-11-23 20:12:20,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:12:20,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:12:20,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:12:20,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:12:20,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:12:20,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:12:20" (1/1) ... [2023-11-23 20:12:20,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4d1cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:20, skipping insertion in model container [2023-11-23 20:12:20,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:12:20" (1/1) ... [2023-11-23 20:12:21,084 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:12:21,600 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:12:22,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:12:22,390 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:12:22,424 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:12:22,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:12:22,690 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:12:22,690 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:12:22,691 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:12:22,691 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:12:22,691 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:12:22,691 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:12:22,700 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:12:22,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22 WrapperNode [2023-11-23 20:12:22,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:12:22,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:12:22,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:12:22,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:12:22,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,770 INFO L138 Inliner]: procedures = 506, calls = 86, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 110 [2023-11-23 20:12:22,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:12:22,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:12:22,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:12:22,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:12:22,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:12:22,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:12:22,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:12:22,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:12:22,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:12:22" (1/1) ... [2023-11-23 20:12:22,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:12:22,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:12:22,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:12:22,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:12:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-23 20:12:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-23 20:12:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:12:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:12:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:12:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:12:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:12:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:12:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:12:22,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:12:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:12:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:12:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:12:23,141 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:12:23,143 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:12:23,469 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:12:23,532 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:12:23,533 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:12:23,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:12:23 BoogieIcfgContainer [2023-11-23 20:12:23,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:12:23,536 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:12:23,536 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:12:23,547 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:12:23,547 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:12:23" (1/1) ... [2023-11-23 20:12:23,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:12:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:12:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 48 states and 65 transitions. [2023-11-23 20:12:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2023-11-23 20:12:23,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:12:23,644 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:12:23,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:12:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:12:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:12:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:12:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 47 states and 64 transitions. [2023-11-23 20:12:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2023-11-23 20:12:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:12:24,157 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:12:24,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:12:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:12:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:12:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:12:24,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 46 states and 63 transitions. [2023-11-23 20:12:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2023-11-23 20:12:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 20:12:24,392 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:12:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:12:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:12:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:12:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:12:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 45 states and 62 transitions. [2023-11-23 20:12:24,567 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2023-11-23 20:12:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:12:24,569 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:12:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:12:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:12:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:12:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:12:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 45 states and 61 transitions. [2023-11-23 20:12:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2023-11-23 20:12:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:12:24,730 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:12:24,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:12:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:12:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:12:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:12:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 44 states and 60 transitions. [2023-11-23 20:12:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2023-11-23 20:12:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 20:12:24,912 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:12:24,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:12:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:12:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:12:25,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:12:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 43 states and 59 transitions. [2023-11-23 20:12:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2023-11-23 20:12:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 20:12:25,056 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:12:25,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:12:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:12:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:12:25,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:12:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 42 states and 58 transitions. [2023-11-23 20:12:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 58 transitions. [2023-11-23 20:12:25,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:12:25,202 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 8 iterations. [2023-11-23 20:12:25,210 INFO L751 CodeCheckObserver]: All specifications hold 6 specifications checked. All of them hold [2023-11-23 20:12:25,256 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-23 20:12:25,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:12:25 ImpRootNode [2023-11-23 20:12:25,261 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:12:25,262 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:12:25,262 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:12:25,264 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:12:25,264 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:12:23" (3/4) ... [2023-11-23 20:12:25,266 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:12:25,270 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2023-11-23 20:12:25,270 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2023-11-23 20:12:25,278 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-23 20:12:25,279 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-23 20:12:25,279 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 20:12:25,279 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:12:25,280 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:12:25,417 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 20:12:25,417 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/witness.yml [2023-11-23 20:12:25,417 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:12:25,418 INFO L158 Benchmark]: Toolchain (without parser) took 4445.18ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 74.9MB in the end (delta: 20.2MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2023-11-23 20:12:25,418 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory was 68.9MB in the beginning and 68.6MB in the end (delta: 335.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:12:25,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1724.29ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 79.6MB in the end (delta: 15.1MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2023-11-23 20:12:25,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.43ms. Allocated memory is still 142.6MB. Free memory was 79.6MB in the beginning and 76.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:12:25,419 INFO L158 Benchmark]: Boogie Preprocessor took 73.08ms. Allocated memory is still 142.6MB. Free memory was 76.0MB in the beginning and 74.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:12:25,419 INFO L158 Benchmark]: RCFGBuilder took 689.49ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 55.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:12:25,419 INFO L158 Benchmark]: CodeCheck took 1725.51ms. Allocated memory is still 142.6MB. Free memory was 55.9MB in the beginning and 81.2MB in the end (delta: -25.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:12:25,420 INFO L158 Benchmark]: Witness Printer took 155.68ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 74.9MB in the end (delta: 6.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:12:25,422 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, 48 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 464 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 258 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 240 IncrementalHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 254 mSDtfsCounter, 240 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 911 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 1627]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1627]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1645]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1645]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1661]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1661]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 1609]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory was 68.9MB in the beginning and 68.6MB in the end (delta: 335.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1724.29ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 79.6MB in the end (delta: 15.1MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.43ms. Allocated memory is still 142.6MB. Free memory was 79.6MB in the beginning and 76.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.08ms. Allocated memory is still 142.6MB. Free memory was 76.0MB in the beginning and 74.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 689.49ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 55.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 1725.51ms. Allocated memory is still 142.6MB. Free memory was 55.9MB in the beginning and 81.2MB in the end (delta: -25.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 155.68ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 74.9MB in the end (delta: 6.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-23 20:12:25,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1e38a0-e81f-471d-983e-ff6a7fda6d44/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE