./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-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_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/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_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/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_a94fa853-58bb-42cb-b3b2-231df37c94aa/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 e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 05:09:54,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 05:09:55,003 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-25 05:09:55,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 05:09:55,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 05:09:55,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 05:09:55,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-25 05:09:55,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-25 05:09:55,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 05:09:55,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 05:09:55,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 05:09:55,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 05:09:55,050 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 05:09:55,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 05:09:55,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 05:09:55,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 05:09:55,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 05:09:55,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 05:09:55,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 05:09:55,052 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 05:09:55,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 05:09:55,052 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 05:09:55,052 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 05:09:55,052 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 05:09:55,052 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 05:09:55,052 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 05:09:55,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 05:09:55,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 05:09:55,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 05:09:55,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 05:09:55,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-25 05:09:55,054 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 05:09:55,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 05:09:55,055 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_a94fa853-58bb-42cb-b3b2-231df37c94aa/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 -> e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 [2024-11-25 05:09:55,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 05:09:55,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 05:09:55,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 05:09:55,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 05:09:55,398 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 05:09:55,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2024-11-25 05:09:58,517 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/data/a23f0a3d6/9b3736396d6a448884c3ecc5a33c6c3f/FLAG358f7cd13 [2024-11-25 05:09:58,910 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 05:09:58,915 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2024-11-25 05:09:58,934 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/data/a23f0a3d6/9b3736396d6a448884c3ecc5a33c6c3f/FLAG358f7cd13 [2024-11-25 05:09:59,092 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/data/a23f0a3d6/9b3736396d6a448884c3ecc5a33c6c3f [2024-11-25 05:09:59,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 05:09:59,096 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 05:09:59,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 05:09:59,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 05:09:59,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 05:09:59,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ba53d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59, skipping insertion in model container [2024-11-25 05:09:59,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,144 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 05:09:59,498 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_a94fa853-58bb-42cb-b3b2-231df37c94aa/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2024-11-25 05:09:59,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 05:09:59,517 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 05:09:59,574 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_a94fa853-58bb-42cb-b3b2-231df37c94aa/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2024-11-25 05:09:59,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 05:09:59,616 INFO L204 MainTranslator]: Completed translation [2024-11-25 05:09:59,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59 WrapperNode [2024-11-25 05:09:59,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 05:09:59,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 05:09:59,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 05:09:59,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 05:09:59,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,685 INFO L138 Inliner]: procedures = 126, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2024-11-25 05:09:59,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 05:09:59,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 05:09:59,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 05:09:59,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 05:09:59,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,728 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 05:09:59,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 05:09:59,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 05:09:59,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 05:09:59,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:09:59" (1/1) ... [2024-11-25 05:09:59,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 05:09:59,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 05:09:59,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 05:09:59,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 05:09:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-25 05:09:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-25 05:09:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-25 05:09:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-25 05:09:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-25 05:09:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 05:09:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-25 05:09:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-25 05:09:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-25 05:09:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 05:09:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 05:09:59,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 05:09:59,975 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 05:09:59,977 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 05:10:00,024 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-25 05:10:00,393 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-25 05:10:00,393 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 05:10:00,556 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 05:10:00,558 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-25 05:10:00,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:10:00 BoogieIcfgContainer [2024-11-25 05:10:00,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 05:10:00,560 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 05:10:00,560 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 05:10:00,573 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 05:10:00,573 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:10:00" (1/1) ... [2024-11-25 05:10:00,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 05:10:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 05:10:00,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 30 states and 43 transitions. [2024-11-25 05:10:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2024-11-25 05:10:00,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-25 05:10:00,664 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 05:10:00,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 05:10:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 05:10:00,862 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 05:10:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 05:10:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 41 transitions. [2024-11-25 05:10:00,923 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2024-11-25 05:10:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-25 05:10:00,925 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 05:10:00,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 05:10:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 05:10:01,307 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 05:10:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 05:10:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 35 states and 50 transitions. [2024-11-25 05:10:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2024-11-25 05:10:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-25 05:10:01,468 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 05:10:01,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 05:10:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 05:10:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 05:10:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 05:10:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 42 states and 65 transitions. [2024-11-25 05:10:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 65 transitions. [2024-11-25 05:10:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-25 05:10:02,902 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 05:10:02,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 05:10:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 05:10:02,930 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 05:10:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 05:10:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 05:10:03,035 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 05:10:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 05:10:03,118 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2024-11-25 05:10:03,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 05:10:03 ImpRootNode [2024-11-25 05:10:03,160 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 05:10:03,161 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 05:10:03,161 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 05:10:03,161 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 05:10:03,162 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:10:00" (3/4) ... [2024-11-25 05:10:03,164 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-25 05:10:03,217 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 7. [2024-11-25 05:10:03,277 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-25 05:10:03,277 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-25 05:10:03,277 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 05:10:03,278 INFO L158 Benchmark]: Toolchain (without parser) took 4182.10ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 118.0MB in the beginning and 284.8MB in the end (delta: -166.8MB). Peak memory consumption was 115.1MB. Max. memory is 16.1GB. [2024-11-25 05:10:03,279 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 05:10:03,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.15ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 99.6MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-25 05:10:03,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.82ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 05:10:03,281 INFO L158 Benchmark]: Boogie Preprocessor took 60.30ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 95.9MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 05:10:03,282 INFO L158 Benchmark]: RCFGBuilder took 808.20ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 67.0MB in the end (delta: 28.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-25 05:10:03,282 INFO L158 Benchmark]: CodeCheck took 2600.45ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 67.0MB in the beginning and 289.7MB in the end (delta: -222.7MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. [2024-11-25 05:10:03,284 INFO L158 Benchmark]: Witness Printer took 116.54ms. Allocated memory is still 427.8MB. Free memory was 289.1MB in the beginning and 284.8MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 05:10:03,286 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 41 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L596] List a = (List) malloc(sizeof(struct node)); [L597] COND FALSE !(a == 0) VAL [a={-1:0}] [L598] List t; [L599] List p = a; [L600] a->h = 2 VAL [a={-1:0}, p={-1:0}] [L601] COND TRUE __VERIFIER_nondet_int() [L602] p->h = 1 [L603] t = (List) malloc(sizeof(struct node)) [L604] COND FALSE !(t == 0) VAL [a={-1:0}, p={-1:0}, t={28764:0}] [L605] p->n = t [L606] EXPR p->n [L606] p = p->n [L601] COND FALSE !(__VERIFIER_nondet_int()) [L608] p->h = 2 [L609] p->n = 0 [L610] p = a VAL [p={-1:0}] [L611] COND TRUE p!=0 [L612] EXPR p->h VAL [p={-1:0}] [L612] COND TRUE p->h != 2 [L613] reach_error() VAL [p={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.15ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 99.6MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.82ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 97.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.30ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 95.9MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 808.20ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 67.0MB in the end (delta: 28.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 2600.45ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 67.0MB in the beginning and 289.7MB in the end (delta: -222.7MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. * Witness Printer took 116.54ms. Allocated memory is still 427.8MB. Free memory was 289.1MB in the beginning and 284.8MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-25 05:10:03,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94fa853-58bb-42cb-b3b2-231df37c94aa/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