./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm --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 528fbc32d9aa1d8a4eedfd9ab07830e3af97eea6ef37fe4df10e8aa3c9d21936 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 21:13:00,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 21:13:00,808 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-13 21:13:00,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 21:13:00,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 21:13:00,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 21:13:00,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 21:13:00,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 21:13:00,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 21:13:00,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 21:13:00,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 21:13:00,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 21:13:00,861 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 21:13:00,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 21:13:00,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 21:13:00,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 21:13:00,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 21:13:00,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 21:13:00,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 21:13:00,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 21:13:00,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 21:13:00,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 21:13:00,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 21:13:00,862 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 21:13:00,863 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 21:13:00,863 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 21:13:00,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 21:13:00,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 21:13:00,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 21:13:00,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 21:13:00,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 21:13:00,864 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 21:13:00,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 21:13:00,864 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_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm 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 -> 528fbc32d9aa1d8a4eedfd9ab07830e3af97eea6ef37fe4df10e8aa3c9d21936 [2024-11-13 21:13:01,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 21:13:01,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 21:13:01,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 21:13:01,184 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 21:13:01,187 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 21:13:01,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i Unable to find full path for "g++" [2024-11-13 21:13:03,161 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 21:13:03,591 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 21:13:03,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i [2024-11-13 21:13:03,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/data/e735a3a28/60251421c44f4040aac94af3d0c25079/FLAGaaa90b1b3 [2024-11-13 21:13:03,744 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/data/e735a3a28/60251421c44f4040aac94af3d0c25079 [2024-11-13 21:13:03,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 21:13:03,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 21:13:03,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 21:13:03,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 21:13:03,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 21:13:03,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 09:13:03" (1/1) ... [2024-11-13 21:13:03,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d09f67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:03, skipping insertion in model container [2024-11-13 21:13:03,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 09:13:03" (1/1) ... [2024-11-13 21:13:03,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 21:13:04,145 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_92d98718-6ee5-4df1-9ebe-cb1587558759/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i[23818,23831] [2024-11-13 21:13:04,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 21:13:04,163 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 21:13:04,221 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_92d98718-6ee5-4df1-9ebe-cb1587558759/sv-benchmarks/c/list-ext3-properties/sll_length_check-1.i[23818,23831] [2024-11-13 21:13:04,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 21:13:04,265 INFO L204 MainTranslator]: Completed translation [2024-11-13 21:13:04,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04 WrapperNode [2024-11-13 21:13:04,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 21:13:04,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 21:13:04,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 21:13:04,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 21:13:04,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,322 INFO L138 Inliner]: procedures = 125, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 85 [2024-11-13 21:13:04,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 21:13:04,325 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 21:13:04,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 21:13:04,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 21:13:04,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,352 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,365 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 21:13:04,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 21:13:04,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 21:13:04,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 21:13:04,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 21:13:04,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 21:13:04,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 21:13:04,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 21:13:04,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 21:13:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 21:13:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 21:13:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 21:13:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 21:13:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 21:13:04,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 21:13:04,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 21:13:04,580 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 21:13:04,582 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 21:13:04,799 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-13 21:13:04,799 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 21:13:04,860 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 21:13:04,861 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 21:13:04,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 09:13:04 BoogieIcfgContainer [2024-11-13 21:13:04,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 21:13:04,862 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 21:13:04,862 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 21:13:04,873 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 21:13:04,873 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 09:13:04" (1/1) ... [2024-11-13 21:13:04,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 21:13:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 14 states and 20 transitions. [2024-11-13 21:13:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2024-11-13 21:13:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 21:13:04,937 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:04,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 21:13:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 14 states and 18 transitions. [2024-11-13 21:13:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2024-11-13 21:13:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 21:13:05,092 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:05,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 21:13:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 15 states and 20 transitions. [2024-11-13 21:13:05,313 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2024-11-13 21:13:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 21:13:05,313 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:05,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 21:13:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 15 states and 21 transitions. [2024-11-13 21:13:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2024-11-13 21:13:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 21:13:05,775 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 21:13:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:06,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 18 states and 27 transitions. [2024-11-13 21:13:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2024-11-13 21:13:06,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 21:13:06,514 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 21:13:07,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 20 states and 28 transitions. [2024-11-13 21:13:07,001 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2024-11-13 21:13:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 21:13:07,002 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:07,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:07,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 21:13:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 21 states and 30 transitions. [2024-11-13 21:13:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2024-11-13 21:13:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 21:13:08,033 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:08,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 21:13:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 35 states and 55 transitions. [2024-11-13 21:13:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 55 transitions. [2024-11-13 21:13:11,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 21:13:11,394 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:11,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 21:13:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 21:13:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 21:13:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 36 states and 55 transitions. [2024-11-13 21:13:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 55 transitions. [2024-11-13 21:13:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 21:13:11,753 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 21:13:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 21:13:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:13:11,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 21:13:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:13:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:13:11,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 21:13:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 21:13:11,930 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 9 iterations. [2024-11-13 21:13:11,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.11 09:13:11 ImpRootNode [2024-11-13 21:13:11,958 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-13 21:13:11,959 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 21:13:11,959 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 21:13:11,959 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 21:13:11,960 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 09:13:04" (3/4) ... [2024-11-13 21:13:11,961 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 21:13:11,996 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/witness.graphml [2024-11-13 21:13:11,996 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 21:13:11,997 INFO L158 Benchmark]: Toolchain (without parser) took 8249.29ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 44.9MB in the end (delta: 73.0MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2024-11-13 21:13:11,998 INFO L158 Benchmark]: CDTParser took 1.65ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:13:11,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 516.51ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 100.4MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 21:13:11,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.32ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 98.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:13:11,999 INFO L158 Benchmark]: Boogie Preprocessor took 46.64ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:13:11,999 INFO L158 Benchmark]: RCFGBuilder took 489.25ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 82.4MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 21:13:12,000 INFO L158 Benchmark]: CodeCheck took 7096.36ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 46.2MB in the end (delta: 36.1MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2024-11-13 21:13:12,000 INFO L158 Benchmark]: Witness Printer took 37.65ms. Allocated memory is still 142.6MB. Free memory was 46.2MB in the beginning and 44.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 21:13:12,002 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 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.0s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 216 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 698 IncrementalHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 216 mSolverCounterUnsat, 78 mSDtfsCounter, 698 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 887 GetRequests, 767 SyntacticMatches, 10 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3853 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 251 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 28/42 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 - CounterExampleResult [Line: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L603] int len = 2; VAL [len=2] [L604] len < 32 && __VERIFIER_nondet_int() [L604] len < 32 && __VERIFIER_nondet_int() VAL [len=2] [L604] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L607] CALL, EXPR sll_create(len + 1) [L575] SLL head = ((void *)0); VAL [head={0:0}, len=3] [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND TRUE len > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L583] len-- [L576] COND FALSE !(len > 0) [L585] return head; [L607] RET, EXPR sll_create(len + 1) [L607] SLL s = sll_create(len + 1); [L608] CALL, EXPR sll_length(s) [L588] int len = 0; VAL [head={4757:0}, len=0] [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND TRUE \read(head) [L590] len++ [L591] EXPR head->next [L591] head = head->next [L589] COND FALSE !(\read(head)) [L593] return len; [L608] RET, EXPR sll_length(s) [L608] COND TRUE len != sll_length(s) [L613] reach_error() VAL [s={4757:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.65ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 516.51ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 100.4MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.32ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 98.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.64ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 97.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 489.25ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 82.4MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 7096.36ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 46.2MB in the end (delta: 36.1MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * Witness Printer took 37.65ms. Allocated memory is still 142.6MB. Free memory was 46.2MB in the beginning and 44.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-13 21:13:12,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92d98718-6ee5-4df1-9ebe-cb1587558759/bin/ukojak-verify-EEHR8qb7sm/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