./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_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_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9 --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 35253b1ee79afb5a09e900c41643645460fcad79c099789a427316eeaf2bcdbb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 22:28:44,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 22:28:44,656 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-12-02 22:28:44,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 22:28:44,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 22:28:44,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 22:28:44,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 22:28:44,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 22:28:44,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 22:28:44,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 22:28:44,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 22:28:44,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 22:28:44,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 22:28:44,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 22:28:44,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 22:28:44,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 22:28:44,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 22:28:44,693 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 22:28:44,694 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 22:28:44,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 22:28:44,695 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 22:28:44,695 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 22:28:44,696 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 22:28:44,696 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 22:28:44,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 22:28:44,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 22:28:44,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 22:28:44,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 22:28:44,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 22:28:44,699 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 22:28:44,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 22:28:44,700 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 22:28:44,700 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_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35253b1ee79afb5a09e900c41643645460fcad79c099789a427316eeaf2bcdbb [2023-12-02 22:28:44,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 22:28:44,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 22:28:44,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 22:28:44,936 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 22:28:44,937 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 22:28:44,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_good.i [2023-12-02 22:28:47,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 22:28:47,911 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 22:28:47,911 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_good.i [2023-12-02 22:28:47,934 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/data/87634a045/c71ff18b01534369a9fa15c21e557417/FLAG7906724a3 [2023-12-02 22:28:47,948 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/data/87634a045/c71ff18b01534369a9fa15c21e557417 [2023-12-02 22:28:47,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 22:28:47,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 22:28:47,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 22:28:47,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 22:28:47,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 22:28:47,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:28:47" (1/1) ... [2023-12-02 22:28:47,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4d8b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:47, skipping insertion in model container [2023-12-02 22:28:47,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:28:47" (1/1) ... [2023-12-02 22:28:48,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 22:28:48,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 22:28:48,757 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 22:28:48,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 22:28:48,962 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 22:28:48,963 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 22:28:48,963 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 22:28:48,963 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 22:28:48,963 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 22:28:48,970 INFO L206 MainTranslator]: Completed translation [2023-12-02 22:28:48,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48 WrapperNode [2023-12-02 22:28:48,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 22:28:48,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 22:28:48,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 22:28:48,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 22:28:48,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,029 INFO L138 Inliner]: procedures = 501, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2023-12-02 22:28:49,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 22:28:49,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 22:28:49,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 22:28:49,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 22:28:49,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 22:28:49,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 22:28:49,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 22:28:49,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 22:28:49,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:28:48" (1/1) ... [2023-12-02 22:28:49,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 22:28:49,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 22:28:49,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 22:28:49,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 22:28:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-12-02 22:28:49,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-12-02 22:28:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-02 22:28:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 22:28:49,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 22:28:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 22:28:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 22:28:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 22:28:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 22:28:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 22:28:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 22:28:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 22:28:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 22:28:49,271 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 22:28:49,273 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 22:28:49,397 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 22:28:49,437 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 22:28:49,437 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 22:28:49,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:28:49 BoogieIcfgContainer [2023-12-02 22:28:49,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 22:28:49,439 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 22:28:49,440 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 22:28:49,449 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 22:28:49,449 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:28:49" (1/1) ... [2023-12-02 22:28:49,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 22:28:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:28:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 30 states and 35 transitions. [2023-12-02 22:28:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-12-02 22:28:49,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 22:28:49,513 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:28:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:28:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:28:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 22:28:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:28:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 29 states and 34 transitions. [2023-12-02 22:28:49,784 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-12-02 22:28:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 22:28:49,785 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:28:49,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:28:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:28:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 22:28:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:28:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2023-12-02 22:28:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-12-02 22:28:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 22:28:49,911 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:28:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:28:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:28:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 22:28:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:28:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 27 states and 32 transitions. [2023-12-02 22:28:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-12-02 22:28:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 22:28:50,021 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:28:50,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:28:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:28:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 22:28:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:28:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 31 states and 37 transitions. [2023-12-02 22:28:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-12-02 22:28:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 22:28:50,238 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:28:50,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:28:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:28:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 22:28:50,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:28:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 26 states and 31 transitions. [2023-12-02 22:28:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-12-02 22:28:50,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 22:28:50,425 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2023-12-02 22:28:50,433 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-12-02 22:28:50,473 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-12-02 22:28:50,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 10:28:50 ImpRootNode [2023-12-02 22:28:50,477 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 22:28:50,477 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 22:28:50,477 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 22:28:50,478 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 22:28:50,478 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:28:49" (3/4) ... [2023-12-02 22:28:50,480 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 22:28:50,483 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2023-12-02 22:28:50,483 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2023-12-02 22:28:50,488 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-12-02 22:28:50,488 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-12-02 22:28:50,489 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 22:28:50,489 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 22:28:50,572 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-02 22:28:50,573 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/witness.yml [2023-12-02 22:28:50,573 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 22:28:50,574 INFO L158 Benchmark]: Toolchain (without parser) took 2621.91ms. Allocated memory is still 180.4MB. Free memory was 135.0MB in the beginning and 126.3MB in the end (delta: 8.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2023-12-02 22:28:50,574 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 22:28:50,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1017.00ms. Allocated memory is still 180.4MB. Free memory was 135.0MB in the beginning and 138.3MB in the end (delta: -3.3MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2023-12-02 22:28:50,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.72ms. Allocated memory is still 180.4MB. Free memory was 138.3MB in the beginning and 135.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 22:28:50,576 INFO L158 Benchmark]: Boogie Preprocessor took 27.03ms. Allocated memory is still 180.4MB. Free memory was 135.8MB in the beginning and 134.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 22:28:50,576 INFO L158 Benchmark]: RCFGBuilder took 380.58ms. Allocated memory is still 180.4MB. Free memory was 134.0MB in the beginning and 117.3MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 22:28:50,576 INFO L158 Benchmark]: CodeCheck took 1037.47ms. Allocated memory is still 180.4MB. Free memory was 117.3MB in the beginning and 131.6MB in the end (delta: -14.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 22:28:50,577 INFO L158 Benchmark]: Witness Printer took 95.96ms. Allocated memory is still 180.4MB. Free memory was 131.6MB in the beginning and 126.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 22:28:50,579 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: 1.0s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 120 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 81 mSDtfsCounter, 120 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 425 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, 0.4s 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: 1557]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1557]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1582]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1582]: 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: 1601]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1017.00ms. Allocated memory is still 180.4MB. Free memory was 135.0MB in the beginning and 138.3MB in the end (delta: -3.3MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.72ms. Allocated memory is still 180.4MB. Free memory was 138.3MB in the beginning and 135.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.03ms. Allocated memory is still 180.4MB. Free memory was 135.8MB in the beginning and 134.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 380.58ms. Allocated memory is still 180.4MB. Free memory was 134.0MB in the beginning and 117.3MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1037.47ms. Allocated memory is still 180.4MB. Free memory was 117.3MB in the beginning and 131.6MB in the end (delta: -14.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 95.96ms. Allocated memory is still 180.4MB. Free memory was 131.6MB in the beginning and 126.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-12-02 22:28:50,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_835c2241-6edc-4846-9d0c-e6fd82024e26/bin/ukojak-verify-Qdu7aM0XO9/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