./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.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_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/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_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/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_151d2339-b9f4-4df9-b997-16d46f207387/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 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 01:20:41,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 01:20:41,622 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-06 01:20:41,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 01:20:41,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 01:20:41,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 01:20:41,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 01:20:41,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 01:20:41,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 01:20:41,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 01:20:41,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 01:20:41,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 01:20:41,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 01:20:41,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 01:20:41,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 01:20:41,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 01:20:41,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 01:20:41,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 01:20:41,646 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 01:20:41,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 01:20:41,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 01:20:41,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 01:20:41,647 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 01:20:41,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 01:20:41,647 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_151d2339-b9f4-4df9-b997-16d46f207387/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 -> 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf [2024-12-06 01:20:41,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 01:20:41,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 01:20:41,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 01:20:41,890 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 01:20:41,890 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 01:20:41,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2024-12-06 01:20:44,637 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/data/785c5f6b7/374f3b58e0064a82babb7632eea8f99d/FLAGddee80708 [2024-12-06 01:20:44,849 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 01:20:44,850 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2024-12-06 01:20:44,862 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/data/785c5f6b7/374f3b58e0064a82babb7632eea8f99d/FLAGddee80708 [2024-12-06 01:20:44,876 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/data/785c5f6b7/374f3b58e0064a82babb7632eea8f99d [2024-12-06 01:20:44,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 01:20:44,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 01:20:44,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 01:20:44,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 01:20:44,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 01:20:44,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 01:20:44" (1/1) ... [2024-12-06 01:20:44,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a473724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:44, skipping insertion in model container [2024-12-06 01:20:44,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 01:20:44" (1/1) ... [2024-12-06 01:20:44,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 01:20:45,111 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_151d2339-b9f4-4df9-b997-16d46f207387/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2024-12-06 01:20:45,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 01:20:45,151 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 01:20:45,180 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_151d2339-b9f4-4df9-b997-16d46f207387/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2024-12-06 01:20:45,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 01:20:45,218 INFO L204 MainTranslator]: Completed translation [2024-12-06 01:20:45,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45 WrapperNode [2024-12-06 01:20:45,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 01:20:45,220 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 01:20:45,220 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 01:20:45,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 01:20:45,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,257 INFO L138 Inliner]: procedures = 125, calls = 83, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 268 [2024-12-06 01:20:45,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 01:20:45,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 01:20:45,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 01:20:45,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 01:20:45,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,279 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 01:20:45,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 01:20:45,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 01:20:45,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 01:20:45,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 01:20:45,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 01:20:45,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 01:20:45,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2024-12-06 01:20:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-12-06 01:20:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-06 01:20:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 01:20:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 01:20:45,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 01:20:45,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 01:20:45,445 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 01:20:45,446 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 01:20:45,766 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-12-06 01:20:45,766 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 01:20:45,855 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 01:20:45,856 INFO L312 CfgBuilder]: Removed 20 assume(true) statements. [2024-12-06 01:20:45,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:20:45 BoogieIcfgContainer [2024-12-06 01:20:45,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 01:20:45,857 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 01:20:45,857 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 01:20:45,865 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 01:20:45,865 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:20:45" (1/1) ... [2024-12-06 01:20:45,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 01:20:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 80 states and 146 transitions. [2024-12-06 01:20:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 146 transitions. [2024-12-06 01:20:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 01:20:45,913 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:45,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:46,022 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 01:20:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 79 states and 129 transitions. [2024-12-06 01:20:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 129 transitions. [2024-12-06 01:20:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 01:20:46,045 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:46,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:46,114 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 01:20:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 82 states and 132 transitions. [2024-12-06 01:20:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 132 transitions. [2024-12-06 01:20:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-06 01:20:46,155 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:46,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:46,285 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 01:20:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 81 states and 130 transitions. [2024-12-06 01:20:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 130 transitions. [2024-12-06 01:20:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-06 01:20:46,374 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:46,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-06 01:20:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 81 states and 127 transitions. [2024-12-06 01:20:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2024-12-06 01:20:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-06 01:20:46,419 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:46,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:46,495 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 01:20:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 84 states and 130 transitions. [2024-12-06 01:20:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2024-12-06 01:20:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-06 01:20:46,533 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:46,593 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 01:20:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 85 states and 131 transitions. [2024-12-06 01:20:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2024-12-06 01:20:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-06 01:20:46,604 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:46,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-06 01:20:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 88 states and 132 transitions. [2024-12-06 01:20:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 132 transitions. [2024-12-06 01:20:47,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-06 01:20:47,000 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:47,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-06 01:20:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:47,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 91 states and 133 transitions. [2024-12-06 01:20:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 133 transitions. [2024-12-06 01:20:47,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-06 01:20:47,173 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:47,378 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 01:20:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 100 states and 143 transitions. [2024-12-06 01:20:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 143 transitions. [2024-12-06 01:20:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-06 01:20:48,323 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:48,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:48,470 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 01:20:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 107 states and 149 transitions. [2024-12-06 01:20:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 149 transitions. [2024-12-06 01:20:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-06 01:20:48,983 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:48,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:20:49,377 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 01:20:50,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:20:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 114 states and 156 transitions. [2024-12-06 01:20:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 156 transitions. [2024-12-06 01:20:50,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-06 01:20:50,212 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:20:50,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:20:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:20:50,226 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 01:20:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:20:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:20:50,293 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 01:20:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 01:20:50,334 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2024-12-06 01:20:50,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 01:20:50 ImpRootNode [2024-12-06 01:20:50,359 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 01:20:50,360 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 01:20:50,360 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 01:20:50,360 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 01:20:50,361 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:20:45" (3/4) ... [2024-12-06 01:20:50,361 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 01:20:50,398 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 18. [2024-12-06 01:20:50,445 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 01:20:50,446 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 01:20:50,446 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 01:20:50,447 INFO L158 Benchmark]: Toolchain (without parser) took 5566.65ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 91.5MB in the beginning and 75.4MB in the end (delta: 16.1MB). Peak memory consumption was 84.7MB. Max. memory is 16.1GB. [2024-12-06 01:20:50,447 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:20:50,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.50ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 72.8MB in the end (delta: 18.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 01:20:50,447 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.77ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 70.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 01:20:50,448 INFO L158 Benchmark]: Boogie Preprocessor took 35.37ms. Allocated memory is still 117.4MB. Free memory was 70.4MB in the beginning and 68.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:20:50,448 INFO L158 Benchmark]: RCFGBuilder took 562.36ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 83.3MB in the end (delta: -15.1MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2024-12-06 01:20:50,448 INFO L158 Benchmark]: CodeCheck took 4502.34ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 83.3MB in the beginning and 79.6MB in the end (delta: 3.7MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. [2024-12-06 01:20:50,449 INFO L158 Benchmark]: Witness Printer took 86.05ms. Allocated memory is still 184.5MB. Free memory was 79.6MB in the beginning and 75.4MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 01:20:50,450 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 970 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 281 mSDsluCounter, 731 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 308 mSDsCounter, 188 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 645 IncrementalHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 188 mSolverCounterUnsat, 423 mSDtfsCounter, 645 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1426 GetRequests, 1332 SyntacticMatches, 8 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2229 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 771 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 16/18 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: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L638] struct list *data = ((void *)0); VAL [data={0:0}] [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = node [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L654] CALL inspect_before(data) [L615] COND FALSE !(!(shape)) VAL [shape={-2:0}] [L615] COND FALSE !(0) VAL [shape={-2:0}] [L616] shape->next VAL [shape={-2:0}] [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) VAL [shape={-2:0}] [L622] COND FALSE !(0) VAL [shape={-2:0}] [L623] EXPR shape->next VAL [shape={-2:0}] [L623] COND FALSE !(!(shape->next == ((void *)0))) [L623] COND FALSE !(0) VAL [shape={-2:0}] [L624] EXPR shape->slist VAL [shape={-2:0}] [L624] COND FALSE !(!(shape->slist)) [L624] COND FALSE !(0) VAL [shape={-2:0}] [L625] EXPR shape->slist [L625] EXPR shape->slist->next VAL [shape={-2:0}] [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L625] CALL fail() [L565] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.50ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 72.8MB in the end (delta: 18.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.77ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 70.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.37ms. Allocated memory is still 117.4MB. Free memory was 70.4MB in the beginning and 68.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 562.36ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 83.3MB in the end (delta: -15.1MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * CodeCheck took 4502.34ms. Allocated memory was 117.4MB in the beginning and 184.5MB in the end (delta: 67.1MB). Free memory was 83.3MB in the beginning and 79.6MB in the end (delta: 3.7MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. * Witness Printer took 86.05ms. Allocated memory is still 184.5MB. Free memory was 79.6MB in the beginning and 75.4MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 01:20:50,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_151d2339-b9f4-4df9-b997-16d46f207387/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