./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3 --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 f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 04:18:09,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 04:18:09,733 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-25 04:18:09,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 04:18:09,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 04:18:09,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 04:18:09,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-25 04:18:09,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-25 04:18:09,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 04:18:09,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 04:18:09,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 04:18:09,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 04:18:09,764 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 04:18:09,765 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 04:18:09,765 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 04:18:09,765 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 04:18:09,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 04:18:09,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 04:18:09,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 04:18:09,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 04:18:09,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-25 04:18:09,766 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 04:18:09,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 04:18:09,766 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_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3 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 -> f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 [2024-11-25 04:18:10,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 04:18:10,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 04:18:10,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 04:18:10,043 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 04:18:10,045 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 04:18:10,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/list-properties/alternating_list-2.i [2024-11-25 04:18:13,002 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/data/0ba1feea4/3f6906817dac4f9c926a32b4a776c38d/FLAG0b2d3b379 [2024-11-25 04:18:13,408 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 04:18:13,411 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/sv-benchmarks/c/list-properties/alternating_list-2.i [2024-11-25 04:18:13,433 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/data/0ba1feea4/3f6906817dac4f9c926a32b4a776c38d/FLAG0b2d3b379 [2024-11-25 04:18:13,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/data/0ba1feea4/3f6906817dac4f9c926a32b4a776c38d [2024-11-25 04:18:13,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 04:18:13,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 04:18:13,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 04:18:13,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 04:18:13,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 04:18:13,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:18:13" (1/1) ... [2024-11-25 04:18:13,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8567a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:13, skipping insertion in model container [2024-11-25 04:18:13,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:18:13" (1/1) ... [2024-11-25 04:18:13,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 04:18:13,909 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_7407b170-a794-4655-bf5b-b0789b3d0546/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2024-11-25 04:18:13,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 04:18:13,926 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 04:18:13,989 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_7407b170-a794-4655-bf5b-b0789b3d0546/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2024-11-25 04:18:13,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 04:18:14,017 INFO L204 MainTranslator]: Completed translation [2024-11-25 04:18:14,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14 WrapperNode [2024-11-25 04:18:14,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 04:18:14,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 04:18:14,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 04:18:14,018 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 04:18:14,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,057 INFO L138 Inliner]: procedures = 124, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2024-11-25 04:18:14,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 04:18:14,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 04:18:14,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 04:18:14,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 04:18:14,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,078 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 04:18:14,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 04:18:14,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 04:18:14,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 04:18:14,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 04:18:14,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 04:18:14,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 04:18:14,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 04:18:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-25 04:18:14,153 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-25 04:18:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-25 04:18:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-25 04:18:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-25 04:18:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 04:18:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-25 04:18:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-25 04:18:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-25 04:18:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 04:18:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 04:18:14,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 04:18:14,266 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 04:18:14,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 04:18:14,303 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-25 04:18:14,501 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-25 04:18:14,501 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 04:18:14,553 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 04:18:14,554 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-25 04:18:14,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:18:14 BoogieIcfgContainer [2024-11-25 04:18:14,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 04:18:14,555 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 04:18:14,555 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 04:18:14,566 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 04:18:14,566 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:18:14" (1/1) ... [2024-11-25 04:18:14,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 04:18:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:18:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2024-11-25 04:18:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2024-11-25 04:18:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-25 04:18:14,643 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:18:14,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:18:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:18:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 04:18:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:18:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2024-11-25 04:18:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-11-25 04:18:14,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-25 04:18:14,795 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:18:14,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:18:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:18:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 04:18:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:18:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 29 states and 38 transitions. [2024-11-25 04:18:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2024-11-25 04:18:14,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-25 04:18:14,953 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:18:14,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:18:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:18:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 04:18:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:18:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2024-11-25 04:18:15,561 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2024-11-25 04:18:15,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-25 04:18:15,562 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:18:15,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:18:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:18:15,608 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 04:18:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:18:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:18:15,744 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 04:18:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:18:15,794 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2024-11-25 04:18:15,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 04:18:15 ImpRootNode [2024-11-25 04:18:15,830 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 04:18:15,831 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 04:18:15,831 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 04:18:15,831 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 04:18:15,832 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:18:14" (3/4) ... [2024-11-25 04:18:15,833 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-25 04:18:15,881 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 9. [2024-11-25 04:18:15,922 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-25 04:18:15,922 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-25 04:18:15,922 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 04:18:15,923 INFO L158 Benchmark]: Toolchain (without parser) took 2461.92ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 93.6MB in the end (delta: 22.3MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2024-11-25 04:18:15,923 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:18:15,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.43ms. Allocated memory is still 142.6MB. Free memory was 115.8MB in the beginning and 98.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-25 04:18:15,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.33ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 96.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:18:15,924 INFO L158 Benchmark]: Boogie Preprocessor took 29.18ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 95.7MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 04:18:15,924 INFO L158 Benchmark]: RCFGBuilder took 466.68ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 81.4MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 04:18:15,925 INFO L158 Benchmark]: CodeCheck took 1274.87ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 98.5MB in the end (delta: -17.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:18:15,925 INFO L158 Benchmark]: Witness Printer took 91.35ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 93.6MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:18:15,927 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 112 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 68 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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: 573]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={14620:0}, flag=1] [L535] List t; [L536] List p = a; VAL [a={14620:0}, flag=1, p={14620:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 2 [L540] flag = 0 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={14620:0}, flag=0, p={14620:0}, t={-1:0}] [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] flag = 1 VAL [a={14620:0}, flag=1, p={14620:0}] [L553] EXPR p->h VAL [a={14620:0}, flag=1, p={14620:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 [L556] EXPR p->h VAL [a={14620:0}, flag=0, p={14620:0}] [L556] COND TRUE p->h != 1 [L573] reach_error() VAL [a={14620:0}, flag=0, p={14620:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.43ms. Allocated memory is still 142.6MB. Free memory was 115.8MB in the beginning and 98.4MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.33ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 96.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.18ms. Allocated memory is still 142.6MB. Free memory was 96.9MB in the beginning and 95.7MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 466.68ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 81.4MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 1274.87ms. Allocated memory is still 142.6MB. Free memory was 81.4MB in the beginning and 98.5MB in the end (delta: -17.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 91.35ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 93.6MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-25 04:18:15,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7407b170-a794-4655-bf5b-b0789b3d0546/bin/ukojak-verify-ENZ3QT5qd3/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