./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/list-2.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_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/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_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/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_5addd1f7-9b18-431b-984a-873e06b1aa09/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 a135e953d64ed0fec81eb2a1e42f4031e3e387fc71d5a5cd2177772a202dc706 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 05:17:51,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 05:17:51,160 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-06 05:17:51,164 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 05:17:51,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 05:17:51,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 05:17:51,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 05:17:51,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 05:17:51,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 05:17:51,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 05:17:51,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 05:17:51,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 05:17:51,185 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 05:17:51,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 05:17:51,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 05:17:51,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 05:17:51,186 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 05:17:51,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 05:17:51,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:17:51,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 05:17:51,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 05:17:51,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 05:17:51,187 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 05:17:51,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 05:17:51,187 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_5addd1f7-9b18-431b-984a-873e06b1aa09/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 -> a135e953d64ed0fec81eb2a1e42f4031e3e387fc71d5a5cd2177772a202dc706 [2024-12-06 05:17:51,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 05:17:51,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 05:17:51,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 05:17:51,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 05:17:51,433 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 05:17:51,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/list-properties/list-2.i [2024-12-06 05:17:54,032 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/data/108c924ad/a87292df58384101881e01a6e4e25b2f/FLAG8445feb0b [2024-12-06 05:17:54,271 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 05:17:54,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/sv-benchmarks/c/list-properties/list-2.i [2024-12-06 05:17:54,282 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/data/108c924ad/a87292df58384101881e01a6e4e25b2f/FLAG8445feb0b [2024-12-06 05:17:54,292 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/data/108c924ad/a87292df58384101881e01a6e4e25b2f [2024-12-06 05:17:54,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 05:17:54,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 05:17:54,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 05:17:54,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 05:17:54,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 05:17:54,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39579be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54, skipping insertion in model container [2024-12-06 05:17:54,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,325 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 05:17:54,541 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_5addd1f7-9b18-431b-984a-873e06b1aa09/sv-benchmarks/c/list-properties/list-2.i[23408,23421] [2024-12-06 05:17:54,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:17:54,552 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 05:17:54,585 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_5addd1f7-9b18-431b-984a-873e06b1aa09/sv-benchmarks/c/list-properties/list-2.i[23408,23421] [2024-12-06 05:17:54,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:17:54,612 INFO L204 MainTranslator]: Completed translation [2024-12-06 05:17:54,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54 WrapperNode [2024-12-06 05:17:54,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 05:17:54,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 05:17:54,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 05:17:54,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 05:17:54,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,644 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2024-12-06 05:17:54,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 05:17:54,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 05:17:54,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 05:17:54,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 05:17:54,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,660 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 05:17:54,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 05:17:54,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 05:17:54,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 05:17:54,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:17:54,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 05:17:54,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 05:17:54,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 05:17:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-12-06 05:17:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-12-06 05:17:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-06 05:17:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 05:17:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-06 05:17:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 05:17:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-06 05:17:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-06 05:17:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 05:17:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 05:17:54,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 05:17:54,791 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 05:17:54,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 05:17:54,809 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-12-06 05:17:54,931 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-12-06 05:17:54,932 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 05:17:54,958 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 05:17:54,959 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-06 05:17:54,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:17:54 BoogieIcfgContainer [2024-12-06 05:17:54,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 05:17:54,960 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 05:17:54,960 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 05:17:54,966 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 05:17:54,967 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:17:54" (1/1) ... [2024-12-06 05:17:54,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 05:17:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:17:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 27 states and 38 transitions. [2024-12-06 05:17:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2024-12-06 05:17:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-06 05:17:55,023 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:17:55,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:17:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:17:55,140 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 05:17:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:17:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 27 states and 33 transitions. [2024-12-06 05:17:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-12-06 05:17:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-06 05:17:55,163 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:17:55,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:17:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:17:55,391 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 05:17:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:17:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 38 states and 54 transitions. [2024-12-06 05:17:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2024-12-06 05:17:55,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-06 05:17:55,509 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:17:55,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:17:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:17:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:17:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:17:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 38 states and 52 transitions. [2024-12-06 05:17:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2024-12-06 05:17:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-06 05:17:55,729 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:17:55,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:17:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:17:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:17:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:17:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 38 states and 50 transitions. [2024-12-06 05:17:55,943 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2024-12-06 05:17:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-06 05:17:55,944 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:17:55,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:17:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:17:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:17:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:17:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 51 states and 77 transitions. [2024-12-06 05:17:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 77 transitions. [2024-12-06 05:17:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-06 05:17:56,913 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:17:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:17:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:17:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:17:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:17:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 62 states and 101 transitions. [2024-12-06 05:17:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 101 transitions. [2024-12-06 05:17:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-06 05:17:58,228 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:17:58,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:17:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:17:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:17:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:17:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 73 states and 124 transitions. [2024-12-06 05:17:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 124 transitions. [2024-12-06 05:17:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-06 05:17:59,738 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:17:59,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:17:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:17:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:18:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:18:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 82 states and 144 transitions. [2024-12-06 05:18:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 144 transitions. [2024-12-06 05:18:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-06 05:18:00,894 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:18:00,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:18:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:18:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:18:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:18:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 84 states and 152 transitions. [2024-12-06 05:18:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 152 transitions. [2024-12-06 05:18:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-06 05:18:01,739 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:18:01,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:18:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:18:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:18:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:18:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 86 states and 160 transitions. [2024-12-06 05:18:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2024-12-06 05:18:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-06 05:18:02,219 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:18:02,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:18:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:18:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:18:03,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:18:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 92 states and 175 transitions. [2024-12-06 05:18:03,474 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 175 transitions. [2024-12-06 05:18:03,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-06 05:18:03,475 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:18:03,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:18:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:18:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:18:06,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:18:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 105 states and 211 transitions. [2024-12-06 05:18:06,761 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 211 transitions. [2024-12-06 05:18:06,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-06 05:18:06,762 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:18:06,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:18:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:18:06,776 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:18:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:18:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:18:06,955 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:18:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:18:06,994 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 13 iterations. [2024-12-06 05:18:07,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 05:18:07 ImpRootNode [2024-12-06 05:18:07,019 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 05:18:07,020 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 05:18:07,020 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 05:18:07,020 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 05:18:07,021 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:17:54" (3/4) ... [2024-12-06 05:18:07,021 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 05:18:07,054 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 12. [2024-12-06 05:18:07,099 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 05:18:07,100 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 05:18:07,100 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 05:18:07,100 INFO L158 Benchmark]: Toolchain (without parser) took 12805.33ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 91.4MB in the beginning and 71.2MB in the end (delta: 20.1MB). Peak memory consumption was 118.7MB. Max. memory is 16.1GB. [2024-12-06 05:18:07,101 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 71.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:18:07,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.06ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 73.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 05:18:07,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.93ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:18:07,102 INFO L158 Benchmark]: Boogie Preprocessor took 20.78ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 71.3MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 05:18:07,102 INFO L158 Benchmark]: RCFGBuilder took 293.17ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 56.8MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 05:18:07,102 INFO L158 Benchmark]: CodeCheck took 12059.66ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 56.6MB in the beginning and 78.1MB in the end (delta: -21.5MB). Peak memory consumption was 85.2MB. Max. memory is 16.1GB. [2024-12-06 05:18:07,102 INFO L158 Benchmark]: Witness Printer took 80.03ms. Allocated memory is still 218.1MB. Free memory was 78.1MB in the beginning and 71.2MB in the end (delta: 6.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:18:07,104 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.0s, OverallIterations: 13, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1126 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 662 mSDsluCounter, 1122 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 774 mSDsCounter, 572 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2516 IncrementalHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 572 mSolverCounterUnsat, 348 mSDtfsCounter, 2516 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2179 GetRequests, 1945 SyntacticMatches, 58 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13573 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 259 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 2496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 4/46 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 - CounterExampleResult [Line: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={44630:0}] [L534] List t; [L535] List p = a; VAL [a={44630:0}, p={44630:0}] [L536] COND TRUE __VERIFIER_nondet_int() [L537] p->h = 1 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) VAL [a={44630:0}, p={44630:0}, t={44631:0}] [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND TRUE __VERIFIER_nondet_int() [L544] p->h = 2 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={44630:0}, p={44631:0}, t={44632:0}] [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a VAL [p={44630:0}] [L552] EXPR p->h VAL [p={44630:0}] [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h VAL [p={44630:0}] [L554] COND TRUE p->h == 1 [L555] EXPR p->n [L555] p = p->n VAL [p={44631:0}] [L554] EXPR p->h VAL [p={44631:0}] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 71.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.06ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 73.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.93ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.78ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 71.3MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 293.17ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 56.8MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 12059.66ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 56.6MB in the beginning and 78.1MB in the end (delta: -21.5MB). Peak memory consumption was 85.2MB. Max. memory is 16.1GB. * Witness Printer took 80.03ms. Allocated memory is still 218.1MB. Free memory was 78.1MB in the beginning and 71.2MB in the end (delta: 6.9MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 05:18:07,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5addd1f7-9b18-431b-984a-873e06b1aa09/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE