./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/simple-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi --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 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:16:26,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:16:26,767 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-24 22:16:26,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:16:26,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 22:16:26,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:16:26,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:16:26,821 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 22:16:26,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:16:26,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:16:26,824 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:16:26,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:16:26,825 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:16:26,825 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:16:26,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:16:26,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:16:26,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:16:26,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:16:26,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:16:26,828 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:16:26,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:16:26,830 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:16:26,830 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:16:26,830 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:16:26,831 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:16:26,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:16:26,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:16:26,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:16:26,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:16:26,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:16:26,834 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 22:16:26,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:16:26,834 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:16:26,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b [2023-11-24 22:16:27,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:16:27,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:16:27,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:16:27,181 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:16:27,183 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:16:27,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/list-properties/simple-1.i [2023-11-24 22:16:30,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:16:30,595 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:16:30,596 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/sv-benchmarks/c/list-properties/simple-1.i [2023-11-24 22:16:30,620 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/data/38ff5ff6f/58223a4f4c9b4e809f8d49cffddcf9ad/FLAGf6473297a [2023-11-24 22:16:30,641 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/data/38ff5ff6f/58223a4f4c9b4e809f8d49cffddcf9ad [2023-11-24 22:16:30,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:16:30,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:16:30,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:16:30,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:16:30,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:16:30,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:16:30" (1/1) ... [2023-11-24 22:16:30,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf85c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:30, skipping insertion in model container [2023-11-24 22:16:30,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:16:30" (1/1) ... [2023-11-24 22:16:30,735 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:16:31,081 WARN L240 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_95781c3d-9feb-4c1a-8797-762b28f6a496/sv-benchmarks/c/list-properties/simple-1.i[23237,23250] [2023-11-24 22:16:31,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:16:31,106 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:16:31,182 WARN L240 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_95781c3d-9feb-4c1a-8797-762b28f6a496/sv-benchmarks/c/list-properties/simple-1.i[23237,23250] [2023-11-24 22:16:31,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:16:31,216 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:16:31,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31 WrapperNode [2023-11-24 22:16:31,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:16:31,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:16:31,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:16:31,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:16:31,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,269 INFO L138 Inliner]: procedures = 124, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2023-11-24 22:16:31,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:16:31,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:16:31,271 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:16:31,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:16:31,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:16:31,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:16:31,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:16:31,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:16:31,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:16:31,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:16:31,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:16:31,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:16:31,390 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-11-24 22:16:31,391 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-11-24 22:16:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:16:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:16:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:16:31,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:16:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 22:16:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 22:16:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:16:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:16:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:16:31,511 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:16:31,514 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:16:31,558 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-11-24 22:16:31,780 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:16:31,807 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:16:31,808 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:16:31,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:16:31 BoogieIcfgContainer [2023-11-24 22:16:31,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:16:31,811 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:16:31,811 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:16:31,820 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:16:31,820 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:16:31" (1/1) ... [2023-11-24 22:16:31,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:16:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:16:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 18 states and 23 transitions. [2023-11-24 22:16:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2023-11-24 22:16:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 22:16:31,891 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:16:31,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:16:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:16:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:16:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:16:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2023-11-24 22:16:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-24 22:16:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 22:16:32,088 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:16:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:16:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:16:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:16:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:16:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 23 states and 30 transitions. [2023-11-24 22:16:32,620 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-11-24 22:16:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 22:16:32,621 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:16:32,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:16:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:16:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:16:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:16:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 30 states and 45 transitions. [2023-11-24 22:16:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 45 transitions. [2023-11-24 22:16:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 22:16:33,707 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:16:33,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:16:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:16:33,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:16:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:16:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:16:33,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:16:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:16:33,922 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2023-11-24 22:16:33,946 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-24 22:16:33,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:16:33 ImpRootNode [2023-11-24 22:16:33,953 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:16:33,953 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:16:33,954 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:16:33,954 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:16:33,954 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:16:31" (3/4) ... [2023-11-24 22:16:33,955 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 22:16:33,967 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-24 22:16:34,023 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 22:16:34,024 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:16:34,025 INFO L158 Benchmark]: Toolchain (without parser) took 3376.02ms. Allocated memory is still 172.0MB. Free memory was 127.5MB in the beginning and 97.2MB in the end (delta: 30.2MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2023-11-24 22:16:34,025 INFO L158 Benchmark]: CDTParser took 0.64ms. Allocated memory is still 109.1MB. Free memory was 78.6MB in the beginning and 78.6MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:16:34,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.13ms. Allocated memory is still 172.0MB. Free memory was 127.0MB in the beginning and 110.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 22:16:34,026 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.76ms. Allocated memory is still 172.0MB. Free memory was 110.2MB in the beginning and 108.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:16:34,027 INFO L158 Benchmark]: Boogie Preprocessor took 31.07ms. Allocated memory is still 172.0MB. Free memory was 108.1MB in the beginning and 107.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:16:34,027 INFO L158 Benchmark]: RCFGBuilder took 505.37ms. Allocated memory is still 172.0MB. Free memory was 106.5MB in the beginning and 138.1MB in the end (delta: -31.6MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-11-24 22:16:34,028 INFO L158 Benchmark]: CodeCheck took 2142.26ms. Allocated memory is still 172.0MB. Free memory was 138.1MB in the beginning and 99.3MB in the end (delta: 38.7MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2023-11-24 22:16:34,028 INFO L158 Benchmark]: Witness Printer took 70.49ms. Allocated memory is still 172.0MB. Free memory was 99.3MB in the beginning and 97.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:16:34,035 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, 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, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 44 mSDtfsCounter, 91 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, 0.6s 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 - CounterExampleResult [Line: 549]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; [L536] a->h = 2 VAL [a={-1:0}, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] p->h = 1 [L539] t = (List) malloc(sizeof(struct node)) [L540] COND FALSE !(t == 0) VAL [a={-1:0}, p={-1:0}, t={-2:0}] [L541] p->n = t [L542] EXPR p->n [L542] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a VAL [a={-1:0}, p={-1:0}, t={-2:0}] [L547] COND TRUE p!=0 [L548] EXPR p->h VAL [a={-1:0}, p={-1:0}, t={-2:0}] [L548] COND TRUE p->h != 2 [L549] reach_error() VAL [a={-1:0}, p={-1:0}, t={-2:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64ms. Allocated memory is still 109.1MB. Free memory was 78.6MB in the beginning and 78.6MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 567.13ms. Allocated memory is still 172.0MB. Free memory was 127.0MB in the beginning and 110.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.76ms. Allocated memory is still 172.0MB. Free memory was 110.2MB in the beginning and 108.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.07ms. Allocated memory is still 172.0MB. Free memory was 108.1MB in the beginning and 107.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 505.37ms. Allocated memory is still 172.0MB. Free memory was 106.5MB in the beginning and 138.1MB in the end (delta: -31.6MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * CodeCheck took 2142.26ms. Allocated memory is still 172.0MB. Free memory was 138.1MB in the beginning and 99.3MB in the end (delta: 38.7MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Witness Printer took 70.49ms. Allocated memory is still 172.0MB. Free memory was 99.3MB in the beginning and 97.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-24 22:16:34,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95781c3d-9feb-4c1a-8797-762b28f6a496/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, 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