./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/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_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/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_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/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 2f760b3fdea86f836635d15342725530c82aafcb6477fb19dcb29f9c1799eb06 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:11:24,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:11:25,007 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-24 23:11:25,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:11:25,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:11:25,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:11:25,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:11:25,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:11:25,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:11:25,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:11:25,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:11:25,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:11:25,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:11:25,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:11:25,045 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:11:25,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:11:25,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:11:25,047 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:11:25,047 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:11:25,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:11:25,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:11:25,055 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:11:25,055 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:11:25,056 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:11:25,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:11:25,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:11:25,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:11:25,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:11:25,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:11:25,060 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:11:25,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:11:25,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:11:25,062 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_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f760b3fdea86f836635d15342725530c82aafcb6477fb19dcb29f9c1799eb06 [2023-11-24 23:11:25,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:11:25,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:11:25,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:11:25,385 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:11:25,385 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:11:25,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_good.i [2023-11-24 23:11:28,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:11:28,930 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:11:28,933 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_good.i [2023-11-24 23:11:28,974 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/data/94181579b/ca011e40b78b4cce8ef51d68f79afaa5/FLAG9898e3648 [2023-11-24 23:11:28,988 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/data/94181579b/ca011e40b78b4cce8ef51d68f79afaa5 [2023-11-24 23:11:28,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:11:28,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:11:28,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:11:28,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:11:29,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:11:29,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:11:28" (1/1) ... [2023-11-24 23:11:29,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc303aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:29, skipping insertion in model container [2023-11-24 23:11:29,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:11:28" (1/1) ... [2023-11-24 23:11:29,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:11:30,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:11:30,443 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:11:30,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:11:30,745 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:11:30,745 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:11:30,745 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:11:30,745 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:11:30,746 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:11:30,754 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:11:30,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30 WrapperNode [2023-11-24 23:11:30,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:11:30,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:11:30,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:11:30,757 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:11:30,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,823 INFO L138 Inliner]: procedures = 501, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 92 [2023-11-24 23:11:30,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:11:30,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:11:30,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:11:30,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:11:30,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:11:30,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:11:30,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:11:30,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:11:30,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:11:30" (1/1) ... [2023-11-24 23:11:30,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:11:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:11:30,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:11:30,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:11:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-24 23:11:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-24 23:11:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 23:11:30,983 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 23:11:30,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 23:11:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:11:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:11:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:11:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:11:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:11:30,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:11:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:11:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:11:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:11:30,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:11:31,164 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:11:31,167 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:11:31,374 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:11:31,430 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:11:31,431 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:11:31,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:11:31 BoogieIcfgContainer [2023-11-24 23:11:31,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:11:31,434 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:11:31,434 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:11:31,445 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:11:31,445 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:11:31" (1/1) ... [2023-11-24 23:11:31,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:11:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:11:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 30 states and 35 transitions. [2023-11-24 23:11:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-11-24 23:11:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:11:31,518 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:11:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:11:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:11:32,082 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 23:11:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:11:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 29 states and 34 transitions. [2023-11-24 23:11:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-24 23:11:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:11:32,116 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:11:32,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:11:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:11:32,286 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 23:11:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:11:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2023-11-24 23:11:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-24 23:11:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:11:32,340 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:11:32,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:11:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:11:32,512 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 23:11:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:11:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 27 states and 32 transitions. [2023-11-24 23:11:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-24 23:11:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:11:32,566 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:11:32,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:11:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:11:32,878 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 23:11:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:11:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 31 states and 37 transitions. [2023-11-24 23:11:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-11-24 23:11:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:11:32,996 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:11:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:11:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:11:33,233 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 23:11:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:11:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 26 states and 31 transitions. [2023-11-24 23:11:33,330 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-11-24 23:11:33,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:11:33,332 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2023-11-24 23:11:33,344 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-24 23:11:33,386 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-24 23:11:33,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:11:33 ImpRootNode [2023-11-24 23:11:33,391 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:11:33,391 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:11:33,392 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:11:33,392 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:11:33,392 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:11:31" (3/4) ... [2023-11-24 23:11:33,394 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 23:11:33,398 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2023-11-24 23:11:33,399 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2023-11-24 23:11:33,409 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-11-24 23:11:33,410 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-24 23:11:33,411 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 23:11:33,411 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 23:11:33,549 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 23:11:33,550 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/bin/ukojak-verify-afCqCEvfdi/witness.yml [2023-11-24 23:11:33,550 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:11:33,551 INFO L158 Benchmark]: Toolchain (without parser) took 4558.23ms. Allocated memory was 148.9MB in the beginning and 205.5MB in the end (delta: 56.6MB). Free memory was 104.0MB in the beginning and 141.4MB in the end (delta: -37.5MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2023-11-24 23:11:33,552 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 148.9MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:11:33,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1761.52ms. Allocated memory is still 148.9MB. Free memory was 104.0MB in the beginning and 106.8MB in the end (delta: -2.8MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. [2023-11-24 23:11:33,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.46ms. Allocated memory is still 148.9MB. Free memory was 106.8MB in the beginning and 104.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:11:33,553 INFO L158 Benchmark]: Boogie Preprocessor took 49.77ms. Allocated memory is still 148.9MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:11:33,554 INFO L158 Benchmark]: RCFGBuilder took 542.03ms. Allocated memory is still 148.9MB. Free memory was 101.9MB in the beginning and 85.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 23:11:33,554 INFO L158 Benchmark]: CodeCheck took 1957.09ms. Allocated memory was 148.9MB in the beginning and 205.5MB in the end (delta: 56.6MB). Free memory was 85.1MB in the beginning and 146.6MB in the end (delta: -61.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:11:33,555 INFO L158 Benchmark]: Witness Printer took 158.90ms. Allocated memory is still 205.5MB. Free memory was 146.6MB in the beginning and 141.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:11:33,557 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, 30 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 120 IncrementalHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 81 mSDtfsCounter, 120 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 449 GetRequests, 423 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 97 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: 1563]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1563]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1590]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1590]: 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: 1610]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 148.9MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1761.52ms. Allocated memory is still 148.9MB. Free memory was 104.0MB in the beginning and 106.8MB in the end (delta: -2.8MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.46ms. Allocated memory is still 148.9MB. Free memory was 106.8MB in the beginning and 104.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.77ms. Allocated memory is still 148.9MB. Free memory was 104.0MB in the beginning and 101.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 542.03ms. Allocated memory is still 148.9MB. Free memory was 101.9MB in the beginning and 85.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1957.09ms. Allocated memory was 148.9MB in the beginning and 205.5MB in the end (delta: 56.6MB). Free memory was 85.1MB in the beginning and 146.6MB in the end (delta: -61.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 158.90ms. Allocated memory is still 205.5MB. Free memory was 146.6MB in the beginning and 141.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-24 23:11:33,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a03916-f8ee-4d06-a362-a86bd9d5d5f4/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