./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/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_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 22:13:18,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 22:13:18,997 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-05 22:13:19,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 22:13:19,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 22:13:19,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 22:13:19,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 22:13:19,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 22:13:19,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 22:13:19,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 22:13:19,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 22:13:19,025 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 22:13:19,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 22:13:19,026 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 22:13:19,026 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 22:13:19,026 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 22:13:19,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 22:13:19,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 22:13:19,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 22:13:19,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 22:13:19,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 22:13:19,026 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 22:13:19,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 22:13:19,027 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_e8b19c09-d867-486f-a0c6-5184f964f6bd/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 ! call(reach_error())) ) 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 -> 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 [2024-12-05 22:13:19,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 22:13:19,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 22:13:19,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 22:13:19,267 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 22:13:19,267 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 22:13:19,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/list-simple/dll2c_remove_all.i [2024-12-05 22:13:22,028 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/data/088f5d343/d3ce8f81138343eeaaaa8dc7b7153507/FLAG7a4e8da6a [2024-12-05 22:13:22,272 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 22:13:22,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/sv-benchmarks/c/list-simple/dll2c_remove_all.i [2024-12-05 22:13:22,281 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/data/088f5d343/d3ce8f81138343eeaaaa8dc7b7153507/FLAG7a4e8da6a [2024-12-05 22:13:22,608 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/data/088f5d343/d3ce8f81138343eeaaaa8dc7b7153507 [2024-12-05 22:13:22,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 22:13:22,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 22:13:22,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 22:13:22,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 22:13:22,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 22:13:22,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9dec9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22, skipping insertion in model container [2024-12-05 22:13:22,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,638 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 22:13:22,867 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/sv-benchmarks/c/list-simple/dll2c_remove_all.i[24169,24182] [2024-12-05 22:13:22,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 22:13:22,876 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 22:13:22,907 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/sv-benchmarks/c/list-simple/dll2c_remove_all.i[24169,24182] [2024-12-05 22:13:22,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 22:13:22,933 INFO L204 MainTranslator]: Completed translation [2024-12-05 22:13:22,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22 WrapperNode [2024-12-05 22:13:22,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 22:13:22,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 22:13:22,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 22:13:22,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 22:13:22,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,967 INFO L138 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 104 [2024-12-05 22:13:22,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 22:13:22,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 22:13:22,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 22:13:22,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 22:13:22,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,985 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:22,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 22:13:22,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 22:13:22,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 22:13:22,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 22:13:22,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:13:22" (1/1) ... [2024-12-05 22:13:23,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 22:13:23,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 22:13:23,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 22:13:23,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 22:13:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-05 22:13:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-12-05 22:13:23,041 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-12-05 22:13:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-05 22:13:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 22:13:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-05 22:13:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-05 22:13:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-05 22:13:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-05 22:13:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-12-05 22:13:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 22:13:23,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 22:13:23,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 22:13:23,123 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 22:13:23,124 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 22:13:23,289 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-12-05 22:13:23,289 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 22:13:23,363 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 22:13:23,363 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-05 22:13:23,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:13:23 BoogieIcfgContainer [2024-12-05 22:13:23,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 22:13:23,364 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 22:13:23,364 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 22:13:23,374 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 22:13:23,374 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:13:23" (1/1) ... [2024-12-05 22:13:23,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 22:13:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:13:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2024-12-05 22:13:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-12-05 22:13:23,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-05 22:13:23,431 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:13:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:13:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:13:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 22:13:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:13:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 17 states and 21 transitions. [2024-12-05 22:13:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-12-05 22:13:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-05 22:13:23,770 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:13:23,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:13:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:13:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 22:13:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:13:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 22 states and 31 transitions. [2024-12-05 22:13:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2024-12-05 22:13:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-05 22:13:24,205 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:13:24,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:13:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:13:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 22:13:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:13:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 23 states and 33 transitions. [2024-12-05 22:13:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2024-12-05 22:13:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-05 22:13:24,504 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:13:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:13:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:13:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-05 22:13:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:13:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 30 states and 54 transitions. [2024-12-05 22:13:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 54 transitions. [2024-12-05 22:13:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-05 22:13:29,413 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:13:29,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:13:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:13:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 22:13:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:13:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 33 states and 63 transitions. [2024-12-05 22:13:31,216 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 63 transitions. [2024-12-05 22:13:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-05 22:13:31,216 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 22:13:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 22:13:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 22:13:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-05 22:13:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 22:13:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 16 states and 16 transitions. [2024-12-05 22:13:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-12-05 22:13:31,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-05 22:13:31,798 WARN L417 CodeCheckObserver]: This Program is SAFE, Check terminated with 7 iterations. [2024-12-05 22:13:31,806 INFO L726 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2024-12-05 22:13:31,884 INFO L77 FloydHoareUtils]: At program point L589(line 589) the Hoare annotation is: true [2024-12-05 22:13:31,884 INFO L77 FloydHoareUtils]: At program point main_returnLabel#1(lines 614 629) the Hoare annotation is: true [2024-12-05 22:13:31,884 INFO L77 FloydHoareUtils]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 627) the Hoare annotation is: true [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point L623(lines 623 625) the Hoare annotation is: true [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point L586(line 586) the Hoare annotation is: (and (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (= 2 |ULTIMATE.start_dll_circular_create_~len#1|) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2)) [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point L586-1(line 586) the Hoare annotation is: true [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point L619-3(lines 619 622) the Hoare annotation is: true [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point main_ERROR#1(line 627) the Hoare annotation is: true [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point L588-1(lines 588 596) the Hoare annotation is: true [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point L588-3(lines 588 596) the Hoare annotation is: true [2024-12-05 22:13:31,885 INFO L77 FloydHoareUtils]: At program point L577(lines 577 579) the Hoare annotation is: (and (= 1 (select |#valid| |node_create_~temp~0#1.base|)) (= |node_create_~temp~0#1.offset| 0) (not (= |node_create_~temp~0#1.base| 0)) (= 0 (select |old(#valid)| |node_create_~temp~0#1.base|))) [2024-12-05 22:13:31,886 INFO L75 FloydHoareUtils]: For program point L573(line 573) no Hoare annotation was computed. [2024-12-05 22:13:31,886 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(lines 575 584) the Hoare annotation is: (= |old(#valid)| |#valid|) [2024-12-05 22:13:31,886 INFO L77 FloydHoareUtils]: At program point node_createEXIT(lines 575 584) the Hoare annotation is: (and (= (select |old(#valid)| |node_create_#res#1.base|) 0) (not (= |node_create_#res#1.base| 0)) (= 0 |node_create_#res#1.offset|) (= (select |#valid| |node_create_#res#1.base|) 1)) [2024-12-05 22:13:31,895 WARN L162 FloydHoareUtils]: Requires clause for node_create contained old-variable. Original clause: (= |old(#valid)| |#valid|) Eliminated clause: true [2024-12-05 22:13:31,901 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-12-05 22:13:31,901 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#valid,GLOBAL]] [2024-12-05 22:13:31,902 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #res!base [2024-12-05 22:13:31,902 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #res!offset [2024-12-05 22:13:31,902 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-12-05 22:13:31,902 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2024-12-05 22:13:31,904 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_ALL [2024-12-05 22:13:31,905 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PID [2024-12-05 22:13:31,905 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PGID [2024-12-05 22:13:31,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 10:13:31 ImpRootNode [2024-12-05 22:13:31,905 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 22:13:31,906 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 22:13:31,906 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 22:13:31,906 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 22:13:31,907 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:13:23" (3/4) ... [2024-12-05 22:13:31,908 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-05 22:13:31,911 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2024-12-05 22:13:31,914 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-12-05 22:13:31,914 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-12-05 22:13:31,915 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-05 22:13:31,915 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-05 22:13:31,982 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-05 22:13:31,983 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-05 22:13:31,983 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 22:13:31,984 INFO L158 Benchmark]: Toolchain (without parser) took 9373.08ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 115.0MB in the beginning and 179.0MB in the end (delta: -64.0MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. [2024-12-05 22:13:31,984 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:13:31,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.18ms. Allocated memory is still 142.6MB. Free memory was 115.0MB in the beginning and 97.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 22:13:31,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.17ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 95.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:13:31,985 INFO L158 Benchmark]: Boogie Preprocessor took 25.50ms. Allocated memory is still 142.6MB. Free memory was 95.6MB in the beginning and 94.2MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 22:13:31,985 INFO L158 Benchmark]: RCFGBuilder took 369.85ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 72.2MB in the end (delta: 21.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 22:13:31,985 INFO L158 Benchmark]: CodeCheck took 8541.25ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 72.2MB in the beginning and 183.9MB in the end (delta: -111.7MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2024-12-05 22:13:31,986 INFO L158 Benchmark]: Witness Printer took 76.86ms. Allocated memory is still 310.4MB. Free memory was 183.9MB in the beginning and 179.0MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 22:13:31,987 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, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.4s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 156 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 189 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 630 IncrementalHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 189 mSolverCounterUnsat, 114 mSDtfsCounter, 630 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 911 GetRequests, 795 SyntacticMatches, 14 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3351 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 27/40 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: 627]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.18ms. Allocated memory is still 142.6MB. Free memory was 115.0MB in the beginning and 97.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.17ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 95.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.50ms. Allocated memory is still 142.6MB. Free memory was 95.6MB in the beginning and 94.2MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 369.85ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 72.2MB in the end (delta: 21.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 8541.25ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 72.2MB in the beginning and 183.9MB in the end (delta: -111.7MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Witness Printer took 76.86ms. Allocated memory is still 310.4MB. Free memory was 183.9MB in the beginning and 179.0MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#valid,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #res!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #res!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - 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! [2024-12-05 22:13:32,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b19c09-d867-486f-a0c6-5184f964f6bd/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