./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.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_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/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_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/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_4fc419c3-beca-4ddf-9c96-b056d6852ba9/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 cab0e4c46b209be0775136f8613c1e239028ef0244464c17ac04057ecb0a0b33 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 01:27:19,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 01:27:20,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-06 01:27:20,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 01:27:20,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 01:27:20,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 01:27:20,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-06 01:27:20,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-06 01:27:20,076 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 01:27:20,076 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 01:27:20,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 01:27:20,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-06 01:27:20,076 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 01:27:20,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 01:27:20,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 01:27:20,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 01:27:20,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-06 01:27:20,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 01:27:20,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-06 01:27:20,077 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 01:27:20,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-06 01:27:20,077 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 01:27:20,077 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 01:27:20,077 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 01:27:20,077 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 01:27:20,077 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 01:27:20,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 01:27:20,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 01:27:20,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 01:27:20,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 01:27:20,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-06 01:27:20,078 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 01:27:20,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 01:27:20,078 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_4fc419c3-beca-4ddf-9c96-b056d6852ba9/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 -> cab0e4c46b209be0775136f8613c1e239028ef0244464c17ac04057ecb0a0b33 [2024-12-06 01:27:20,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 01:27:20,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 01:27:20,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 01:27:20,294 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 01:27:20,295 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 01:27:20,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2024-12-06 01:27:22,887 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/data/17201cfa7/0b4bda2d72c347fea91c6398820c2111/FLAG71d3f26ab [2024-12-06 01:27:23,141 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 01:27:23,141 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2024-12-06 01:27:23,151 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/data/17201cfa7/0b4bda2d72c347fea91c6398820c2111/FLAG71d3f26ab [2024-12-06 01:27:23,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/data/17201cfa7/0b4bda2d72c347fea91c6398820c2111 [2024-12-06 01:27:23,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 01:27:23,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 01:27:23,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 01:27:23,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 01:27:23,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 01:27:23,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de86c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23, skipping insertion in model container [2024-12-06 01:27:23,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,490 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 01:27:23,728 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_4fc419c3-beca-4ddf-9c96-b056d6852ba9/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2024-12-06 01:27:23,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 01:27:23,741 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 01:27:23,780 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_4fc419c3-beca-4ddf-9c96-b056d6852ba9/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2024-12-06 01:27:23,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 01:27:23,804 INFO L204 MainTranslator]: Completed translation [2024-12-06 01:27:23,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23 WrapperNode [2024-12-06 01:27:23,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 01:27:23,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 01:27:23,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 01:27:23,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 01:27:23,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,840 INFO L138 Inliner]: procedures = 126, calls = 27, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 109 [2024-12-06 01:27:23,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 01:27:23,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 01:27:23,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 01:27:23,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 01:27:23,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,858 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 01:27:23,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 01:27:23,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 01:27:23,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 01:27:23,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 01:27:23" (1/1) ... [2024-12-06 01:27:23,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 01:27:23,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 01:27:23,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 01:27:23,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 01:27:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-12-06 01:27:23,926 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-12-06 01:27:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-06 01:27:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 01:27:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-06 01:27:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-06 01:27:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-06 01:27:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-06 01:27:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 01:27:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-06 01:27:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 01:27:23,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 01:27:24,015 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 01:27:24,017 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 01:27:24,038 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-12-06 01:27:24,176 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-12-06 01:27:24,176 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 01:27:24,234 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 01:27:24,234 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-06 01:27:24,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:27:24 BoogieIcfgContainer [2024-12-06 01:27:24,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 01:27:24,235 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 01:27:24,235 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 01:27:24,244 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 01:27:24,244 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:27:24" (1/1) ... [2024-12-06 01:27:24,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 01:27:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:27:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2024-12-06 01:27:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2024-12-06 01:27:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 01:27:24,290 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:27:24,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:27:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:27:24,443 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 01:27:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:27:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2024-12-06 01:27:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2024-12-06 01:27:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-06 01:27:24,494 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:27:24,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:27:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:27:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 01:27:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:27:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 21 states and 29 transitions. [2024-12-06 01:27:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2024-12-06 01:27:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-06 01:27:24,742 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:27:24,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:27:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:27:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-06 01:27:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:27:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 29 states and 44 transitions. [2024-12-06 01:27:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2024-12-06 01:27:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-06 01:27:25,337 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:27:25,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:27:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:27:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-06 01:27:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:27:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 32 states and 49 transitions. [2024-12-06 01:27:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 49 transitions. [2024-12-06 01:27:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-06 01:27:25,581 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 01:27:25,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 01:27:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 01:27:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-06 01:27:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 01:27:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 21 states and 30 transitions. [2024-12-06 01:27:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2024-12-06 01:27:25,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-06 01:27:25,906 WARN L417 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2024-12-06 01:27:25,912 INFO L726 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2024-12-06 01:27:25,967 INFO L77 FloydHoareUtils]: At program point L573(line 573) the Hoare annotation is: true [2024-12-06 01:27:25,967 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(lines 572 574) the Hoare annotation is: true [2024-12-06 01:27:25,968 INFO L75 FloydHoareUtils]: For program point myexitEXIT(lines 572 574) no Hoare annotation was computed. [2024-12-06 01:27:25,968 INFO L77 FloydHoareUtils]: At program point L589(lines 589 591) the Hoare annotation is: (<= 2 |ULTIMATE.start_main_~len~0#1|) [2024-12-06 01:27:25,968 INFO L77 FloydHoareUtils]: At program point L589-1(lines 589 591) the Hoare annotation is: (<= 2 |ULTIMATE.start_main_~len~0#1|) [2024-12-06 01:27:25,968 INFO L77 FloydHoareUtils]: At program point main_returnLabel#1(lines 624 643) the Hoare annotation is: true [2024-12-06 01:27:25,968 INFO L77 FloydHoareUtils]: At program point L590(line 590) the Hoare annotation is: true [2024-12-06 01:27:25,968 INFO L77 FloydHoareUtils]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2024-12-06 01:27:25,968 INFO L77 FloydHoareUtils]: At program point L633-3(lines 633 638) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~i~0#1|) [2024-12-06 01:27:25,968 INFO L77 FloydHoareUtils]: At program point L618-3(lines 618 621) the Hoare annotation is: (<= 2 |ULTIMATE.start_main_~len~0#1|) [2024-12-06 01:27:25,968 INFO L75 FloydHoareUtils]: For program point L635(lines 635 637) no Hoare annotation was computed. [2024-12-06 01:27:25,968 INFO L75 FloydHoareUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 641) no Hoare annotation was computed. [2024-12-06 01:27:25,969 INFO L77 FloydHoareUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2024-12-06 01:27:25,969 INFO L75 FloydHoareUtils]: For program point L611-3(lines 611 614) no Hoare annotation was computed. [2024-12-06 01:27:25,969 INFO L77 FloydHoareUtils]: At program point L587-3(lines 587 600) the Hoare annotation is: (<= 2 |ULTIMATE.start_main_~len~0#1|) [2024-12-06 01:27:25,969 INFO L77 FloydHoareUtils]: At program point L604-3(lines 604 608) the Hoare annotation is: true [2024-12-06 01:27:25,969 INFO L75 FloydHoareUtils]: For program point main_ERROR#1(line 641) no Hoare annotation was computed. [2024-12-06 01:27:25,969 INFO L77 FloydHoareUtils]: At program point L629-3(lines 629 632) the Hoare annotation is: (<= 2 |ULTIMATE.start_main_~len~0#1|) [2024-12-06 01:27:25,986 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~len~0 [2024-12-06 01:27:25,992 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_ALL [2024-12-06 01:27:25,993 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PID [2024-12-06 01:27:25,993 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PGID [2024-12-06 01:27:25,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 01:27:25 ImpRootNode [2024-12-06 01:27:25,994 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 01:27:25,994 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 01:27:25,994 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 01:27:25,994 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 01:27:25,995 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 01:27:24" (3/4) ... [2024-12-06 01:27:25,997 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-06 01:27:26,000 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2024-12-06 01:27:26,004 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-12-06 01:27:26,004 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-12-06 01:27:26,005 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-06 01:27:26,005 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-06 01:27:26,073 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 01:27:26,074 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 01:27:26,074 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 01:27:26,074 INFO L158 Benchmark]: Toolchain (without parser) took 2617.36ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 107.6MB in the end (delta: 10.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2024-12-06 01:27:26,075 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:27:26,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.99ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 99.7MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 01:27:26,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.32ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 98.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:27:26,075 INFO L158 Benchmark]: Boogie Preprocessor took 25.97ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 96.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:27:26,076 INFO L158 Benchmark]: RCFGBuilder took 366.71ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 76.9MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-06 01:27:26,076 INFO L158 Benchmark]: CodeCheck took 1758.22ms. Allocated memory is still 142.6MB. Free memory was 76.9MB in the beginning and 113.4MB in the end (delta: -36.5MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2024-12-06 01:27:26,076 INFO L158 Benchmark]: Witness Printer took 79.45ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 107.6MB in the end (delta: 5.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 01:27:26,078 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, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 45 mSDtfsCounter, 269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 540 GetRequests, 484 SyntacticMatches, 18 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 15/34 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - PositiveResult [Line: 641]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 633]: Loop Invariant Derived loop invariant: (1 <= i) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: (2 <= len) - InvariantResult [Line: 629]: Loop Invariant Derived loop invariant: (2 <= len) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.99ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 99.7MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.32ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 98.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.97ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 96.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.71ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 76.9MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 1758.22ms. Allocated memory is still 142.6MB. Free memory was 76.9MB in the beginning and 113.4MB in the end (delta: -36.5MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. * Witness Printer took 79.45ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 107.6MB in the end (delta: 5.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~len~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_ALL - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PID - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~unnamed0~0~P_PGID RESULT: Ultimate proved your program to be correct! [2024-12-06 01:27:26,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc419c3-beca-4ddf-9c96-b056d6852ba9/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE