./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b --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 32bit --witnessprinter.graph.data.programhash b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 05:46:31,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 05:46:31,825 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Overflow-32bit-Kojak_Default.epf [2024-12-06 05:46:31,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 05:46:31,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 05:46:31,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 05:46:31,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 05:46:31,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 05:46:31,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 05:46:31,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 05:46:31,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 05:46:31,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 05:46:31,853 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 05:46:31,854 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 05:46:31,854 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 05:46:31,854 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 05:46:31,854 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 05:46:31,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 05:46:31,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:46:31,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 05:46:31,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 05:46:31,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 05:46:31,854 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 05:46:31,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 05:46:31,855 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b594cdd667b896d6ce097f6fd96950290806f015d929f3b2b06ffea35d861f89 [2024-12-06 05:46:32,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 05:46:32,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 05:46:32,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 05:46:32,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 05:46:32,112 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 05:46:32,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/list-simple/dll2n_remove_all.i [2024-12-06 05:46:34,750 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/data/2558314bf/250faa94afae4121b87cf31316582d28/FLAG951f7de08 [2024-12-06 05:46:35,007 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 05:46:35,008 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/sv-benchmarks/c/list-simple/dll2n_remove_all.i [2024-12-06 05:46:35,019 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/data/2558314bf/250faa94afae4121b87cf31316582d28/FLAG951f7de08 [2024-12-06 05:46:35,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/data/2558314bf/250faa94afae4121b87cf31316582d28 [2024-12-06 05:46:35,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 05:46:35,037 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 05:46:35,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 05:46:35,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 05:46:35,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 05:46:35,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a14feb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35, skipping insertion in model container [2024-12-06 05:46:35,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 05:46:35,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:46:35,332 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 05:46:35,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:46:35,396 INFO L204 MainTranslator]: Completed translation [2024-12-06 05:46:35,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35 WrapperNode [2024-12-06 05:46:35,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 05:46:35,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 05:46:35,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 05:46:35,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 05:46:35,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,430 INFO L138 Inliner]: procedures = 126, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2024-12-06 05:46:35,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 05:46:35,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 05:46:35,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 05:46:35,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 05:46:35,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,446 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,453 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 05:46:35,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 05:46:35,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 05:46:35,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 05:46:35,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:46:35,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 05:46:35,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 05:46:35,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 05:46:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-12-06 05:46:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-12-06 05:46:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 05:46:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-06 05:46:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 05:46:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-06 05:46:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-06 05:46:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-06 05:46:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 05:46:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-12-06 05:46:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 05:46:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 05:46:35,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 05:46:35,613 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 05:46:35,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 05:46:35,637 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-12-06 05:46:35,773 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-12-06 05:46:35,774 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 05:46:35,839 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 05:46:35,839 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-06 05:46:35,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:46:35 BoogieIcfgContainer [2024-12-06 05:46:35,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 05:46:35,841 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 05:46:35,841 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 05:46:35,850 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 05:46:35,850 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:46:35" (1/1) ... [2024-12-06 05:46:35,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 05:46:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:46:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 21 states and 23 transitions. [2024-12-06 05:46:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-12-06 05:46:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 05:46:35,900 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:46:35,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:46:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:46:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:46:36,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:46:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 22 states and 25 transitions. [2024-12-06 05:46:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-12-06 05:46:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-06 05:46:36,076 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:46:36,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:46:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:46:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:46:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:46:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 21 states and 24 transitions. [2024-12-06 05:46:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-12-06 05:46:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 05:46:36,277 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:46:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:46:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:46:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:46:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:46:36,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 20 states and 22 transitions. [2024-12-06 05:46:36,544 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-12-06 05:46:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 05:46:36,544 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:46:36,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:46:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:46:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-06 05:46:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:46:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 19 states and 21 transitions. [2024-12-06 05:46:37,040 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-12-06 05:46:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 05:46:37,041 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:46:37,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:46:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:46:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-06 05:46:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:46:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2024-12-06 05:46:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-12-06 05:46:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-06 05:46:37,637 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:46:37,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:46:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:46:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-06 05:46:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:46:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 17 states and 19 transitions. [2024-12-06 05:46:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-12-06 05:46:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-06 05:46:37,765 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:46:37,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:46:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:46:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-06 05:46:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:46:38,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2024-12-06 05:46:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-12-06 05:46:38,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-06 05:46:38,033 WARN L417 CodeCheckObserver]: This Program is SAFE, Check terminated with 8 iterations. [2024-12-06 05:46:38,041 INFO L726 CodeCheckObserver]: All specifications hold 6 specifications checked. All of them hold [2024-12-06 05:46:38,126 INFO L77 FloydHoareUtils]: At program point L573(line 573) the Hoare annotation is: true [2024-12-06 05:46:38,126 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(lines 572 574) the Hoare annotation is: true [2024-12-06 05:46:38,126 INFO L75 FloydHoareUtils]: For program point myexitEXIT(lines 572 574) no Hoare annotation was computed. [2024-12-06 05:46:38,126 INFO L75 FloydHoareUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 616) no Hoare annotation was computed. [2024-12-06 05:46:38,126 INFO L77 FloydHoareUtils]: At program point L589(lines 589 591) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_create_~len#1| 2) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 1 |ULTIMATE.start_dll_create_~len#1|)) [2024-12-06 05:46:38,126 INFO L77 FloydHoareUtils]: At program point L589-1(lines 589 591) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_create_~len#1| 2) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 1 |ULTIMATE.start_dll_create_~len#1|)) [2024-12-06 05:46:38,127 INFO L75 FloydHoareUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 599) no Hoare annotation was computed. [2024-12-06 05:46:38,127 INFO L75 FloydHoareUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 616) no Hoare annotation was computed. [2024-12-06 05:46:38,127 INFO L77 FloydHoareUtils]: At program point L590(line 590) the Hoare annotation is: true [2024-12-06 05:46:38,127 INFO L75 FloydHoareUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 599) no Hoare annotation was computed. [2024-12-06 05:46:38,127 INFO L77 FloydHoareUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2024-12-06 05:46:38,127 INFO L75 FloydHoareUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 616) no Hoare annotation was computed. [2024-12-06 05:46:38,127 INFO L77 FloydHoareUtils]: At program point L599(line 599) the Hoare annotation is: (and (<= |ULTIMATE.start_dll_create_#t~post5#1| 2) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 1 |ULTIMATE.start_dll_create_#t~post5#1|)) [2024-12-06 05:46:38,127 INFO L77 FloydHoareUtils]: At program point L599-1(line 599) the Hoare annotation is: (and (<= |ULTIMATE.start_dll_create_#t~post5#1| 2) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_main_~len~0#1| 2)) [2024-12-06 05:46:38,127 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2024-12-06 05:46:38,128 INFO L77 FloydHoareUtils]: At program point L587-3(lines 587 600) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_create_~len#1| 2) (<= |ULTIMATE.start_main_~len~0#1| 2)) [2024-12-06 05:46:38,128 INFO L77 FloydHoareUtils]: At program point L616(line 616) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_main_~len~0#1| 2)) [2024-12-06 05:46:38,128 INFO L77 FloydHoareUtils]: At program point L616-1(line 616) the Hoare annotation is: (<= |ULTIMATE.start_main_~len~0#1| 2) [2024-12-06 05:46:38,128 INFO L77 FloydHoareUtils]: At program point L616-5(line 616) the Hoare annotation is: (and (<= |ULTIMATE.start_main_#t~post10#1| 1) (<= 0 |ULTIMATE.start_main_#t~post10#1|)) [2024-12-06 05:46:38,128 INFO L77 FloydHoareUtils]: At program point L616-6(line 616) the Hoare annotation is: (<= |ULTIMATE.start_main_#t~post10#1| 1) [2024-12-06 05:46:38,128 INFO L77 FloydHoareUtils]: At program point L616-7(lines 616 618) the Hoare annotation is: (<= |ULTIMATE.start_main_~i~0#1| 1) [2024-12-06 05:46:38,128 INFO L75 FloydHoareUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 616) no Hoare annotation was computed. [2024-12-06 05:46:38,144 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_ALL [2024-12-06 05:46:38,144 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PID [2024-12-06 05:46:38,144 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PGID [2024-12-06 05:46:38,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 05:46:38 ImpRootNode [2024-12-06 05:46:38,145 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 05:46:38,146 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 05:46:38,146 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 05:46:38,146 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 05:46:38,147 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:46:35" (3/4) ... [2024-12-06 05:46:38,149 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-06 05:46:38,151 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2024-12-06 05:46:38,155 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-12-06 05:46:38,155 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-12-06 05:46:38,155 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-06 05:46:38,156 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-06 05:46:38,231 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 05:46:38,231 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 05:46:38,231 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 05:46:38,232 INFO L158 Benchmark]: Toolchain (without parser) took 3194.65ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 110.9MB in the end (delta: 4.3MB). Peak memory consumption was 81.9MB. Max. memory is 16.1GB. [2024-12-06 05:46:38,232 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:46:38,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.72ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 97.6MB in the end (delta: 17.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 05:46:38,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.54ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 96.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:46:38,233 INFO L158 Benchmark]: Boogie Preprocessor took 24.37ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 94.9MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 05:46:38,233 INFO L158 Benchmark]: RCFGBuilder took 384.55ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 75.2MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 05:46:38,233 INFO L158 Benchmark]: CodeCheck took 2304.69ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 41.6MB in the end (delta: 33.7MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-12-06 05:46:38,234 INFO L158 Benchmark]: Witness Printer took 85.08ms. Allocated memory is still 142.6MB. Free memory was 41.6MB in the beginning and 110.9MB in the end (delta: -69.3MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2024-12-06 05:46:38,235 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 2 procedures, 22 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 124 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 126 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 470 IncrementalHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 126 mSolverCounterUnsat, 64 mSDtfsCounter, 470 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 431 GetRequests, 353 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 4/4 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, ConComCheckerStatistics: No data available - PositiveResult [Line: 599]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 599]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 616]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 616]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 616]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 616]: 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: 587]: Loop Invariant Derived loop invariant: (((2 <= len) && (len <= 2)) && (len <= 2)) - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (i <= 1) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.72ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 97.6MB in the end (delta: 17.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.54ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 96.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.37ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 94.9MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 384.55ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 75.2MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2304.69ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 41.6MB in the end (delta: 33.7MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Witness Printer took 85.08ms. Allocated memory is still 142.6MB. Free memory was 41.6MB in the beginning and 110.9MB in the end (delta: -69.3MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_ALL - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PID - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PGID RESULT: Ultimate proved your program to be correct! [2024-12-06 05:46:38,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef2ca8d-465e-4a95-8cd1-3d07689a4c58/bin/ukojak-verify-CZk0znPC7b/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