./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-11 23:54:19,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-11 23:54:19,314 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-11 23:54:19,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-11 23:54:19,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-11 23:54:19,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-11 23:54:19,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-11 23:54:19,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-11 23:54:19,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-11 23:54:19,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-11 23:54:19,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-11 23:54:19,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-11 23:54:19,379 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-11 23:54:19,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-11 23:54:19,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-11 23:54:19,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-11 23:54:19,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-11 23:54:19,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-11 23:54:19,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-11 23:54:19,383 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-11 23:54:19,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-11 23:54:19,384 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-11 23:54:19,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-11 23:54:19,385 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-11 23:54:19,385 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-11 23:54:19,386 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-11 23:54:19,386 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-11 23:54:19,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:54:19,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-11 23:54:19,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-11 23:54:19,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-11 23:54:19,389 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-11 23:54:19,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-11 23:54:19,390 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-11 23:54:19,390 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_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 [2023-11-11 23:54:19,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-11 23:54:19,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-11 23:54:19,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-11 23:54:19,728 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-11 23:54:19,729 INFO L274 PluginConnector]: CDTParser initialized [2023-11-11 23:54:19,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2023-11-11 23:54:22,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-11 23:54:23,080 INFO L384 CDTParser]: Found 1 translation units. [2023-11-11 23:54:23,081 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2023-11-11 23:54:23,103 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/data/3085689b8/d89e198ff51f4671a166002d5c89624d/FLAGc16e5274c [2023-11-11 23:54:23,119 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/data/3085689b8/d89e198ff51f4671a166002d5c89624d [2023-11-11 23:54:23,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-11 23:54:23,124 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-11 23:54:23,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-11 23:54:23,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-11 23:54:23,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-11 23:54:23,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b2e100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23, skipping insertion in model container [2023-11-11 23:54:23,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,180 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-11 23:54:23,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:54:23,558 INFO L202 MainTranslator]: Completed pre-run [2023-11-11 23:54:23,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:54:23,689 INFO L206 MainTranslator]: Completed translation [2023-11-11 23:54:23,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23 WrapperNode [2023-11-11 23:54:23,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-11 23:54:23,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-11 23:54:23,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-11 23:54:23,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-11 23:54:23,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,740 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,783 INFO L138 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 113 [2023-11-11 23:54:23,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-11 23:54:23,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-11 23:54:23,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-11 23:54:23,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-11 23:54:23,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-11 23:54:23,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-11 23:54:23,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-11 23:54:23,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-11 23:54:23,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:54:23" (1/1) ... [2023-11-11 23:54:23,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:54:23,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/z3 [2023-11-11 23:54:23,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-11 23:54:23,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-11 23:54:23,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-11 23:54:23,976 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-11-11 23:54:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-11-11 23:54:23,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-11 23:54:23,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-11 23:54:23,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-11 23:54:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-11 23:54:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-11 23:54:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-11 23:54:23,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-11 23:54:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-11 23:54:23,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-11 23:54:23,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-11 23:54:24,109 INFO L236 CfgBuilder]: Building ICFG [2023-11-11 23:54:24,112 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-11 23:54:24,374 INFO L277 CfgBuilder]: Performing block encoding [2023-11-11 23:54:24,646 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-11 23:54:24,647 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-11 23:54:24,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:54:24 BoogieIcfgContainer [2023-11-11 23:54:24,650 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-11 23:54:24,652 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-11 23:54:24,652 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-11 23:54:24,665 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-11 23:54:24,667 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:54:24" (1/1) ... [2023-11-11 23:54:24,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-11 23:54:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2023-11-11 23:54:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-11 23:54:24,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-11 23:54:24,765 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:24,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:54:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 21 states and 25 transitions. [2023-11-11 23:54:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-11 23:54:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-11 23:54:25,454 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:25,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-11 23:54:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 24 states and 29 transitions. [2023-11-11 23:54:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-11-11 23:54:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-11 23:54:25,711 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:25,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-11 23:54:25,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 25 states and 30 transitions. [2023-11-11 23:54:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-11 23:54:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-11 23:54:25,857 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:25,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:26,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:54:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 27 states and 34 transitions. [2023-11-11 23:54:26,284 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2023-11-11 23:54:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-11 23:54:26,285 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:26,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:54:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 28 states and 35 transitions. [2023-11-11 23:54:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2023-11-11 23:54:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-11 23:54:26,506 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:26,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:54:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:26,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 39 transitions. [2023-11-11 23:54:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-11-11 23:54:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-11 23:54:26,955 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:26,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-11 23:54:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 24 states and 30 transitions. [2023-11-11 23:54:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-11-11 23:54:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-11 23:54:27,202 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:27,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:54:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 27 states and 34 transitions. [2023-11-11 23:54:27,702 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2023-11-11 23:54:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-11 23:54:27,703 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:27,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:54:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 24 states and 28 transitions. [2023-11-11 23:54:28,134 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-11 23:54:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-11 23:54:28,136 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:54:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:54:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:54:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-11 23:54:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:54:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 21 states and 22 transitions. [2023-11-11 23:54:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-11-11 23:54:29,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-11 23:54:29,903 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 11 iterations. [2023-11-11 23:54:29,913 INFO L753 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-11 23:54:30,033 INFO L560 CodeCheckObserver]: Invariant with dag size 6 [2023-11-11 23:54:30,040 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:54:30,041 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:54:30,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 11.11 11:54:30 ImpRootNode [2023-11-11 23:54:30,041 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-11 23:54:30,042 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-11 23:54:30,042 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-11 23:54:30,042 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-11 23:54:30,043 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:54:24" (3/4) ... [2023-11-11 23:54:30,045 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-11 23:54:30,049 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2023-11-11 23:54:30,054 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-11 23:54:30,055 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-11 23:54:30,055 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-11 23:54:30,056 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-11 23:54:30,166 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/witness.graphml [2023-11-11 23:54:30,167 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/witness.yml [2023-11-11 23:54:30,167 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-11 23:54:30,168 INFO L158 Benchmark]: Toolchain (without parser) took 7043.62ms. Allocated memory was 159.4MB in the beginning and 257.9MB in the end (delta: 98.6MB). Free memory was 110.5MB in the beginning and 210.8MB in the end (delta: -100.3MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2023-11-11 23:54:30,168 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 159.4MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:54:30,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.52ms. Allocated memory is still 159.4MB. Free memory was 110.1MB in the beginning and 92.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-11 23:54:30,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.89ms. Allocated memory is still 159.4MB. Free memory was 92.8MB in the beginning and 90.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:54:30,170 INFO L158 Benchmark]: Boogie Preprocessor took 78.04ms. Allocated memory is still 159.4MB. Free memory was 90.7MB in the beginning and 88.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:54:30,170 INFO L158 Benchmark]: RCFGBuilder took 786.75ms. Allocated memory was 159.4MB in the beginning and 213.9MB in the end (delta: 54.5MB). Free memory was 88.9MB in the beginning and 177.0MB in the end (delta: -88.1MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. [2023-11-11 23:54:30,171 INFO L158 Benchmark]: CodeCheck took 5389.30ms. Allocated memory was 213.9MB in the beginning and 257.9MB in the end (delta: 44.0MB). Free memory was 177.0MB in the beginning and 216.0MB in the end (delta: -39.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2023-11-11 23:54:30,171 INFO L158 Benchmark]: Witness Printer took 125.06ms. Allocated memory is still 257.9MB. Free memory was 216.0MB in the beginning and 210.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-11 23:54:30,173 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, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 368 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 178 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 587 IncrementalHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 178 mSolverCounterUnsat, 170 mSDtfsCounter, 587 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1208 GetRequests, 1132 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 49/64 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 - PositiveResult [Line: 595]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 595]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 618]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 618]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: ((i == 0) || (1 <= i)) - InvariantResult [Line: 588]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 159.4MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.52ms. Allocated memory is still 159.4MB. Free memory was 110.1MB in the beginning and 92.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.89ms. Allocated memory is still 159.4MB. Free memory was 92.8MB in the beginning and 90.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.04ms. Allocated memory is still 159.4MB. Free memory was 90.7MB in the beginning and 88.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 786.75ms. Allocated memory was 159.4MB in the beginning and 213.9MB in the end (delta: 54.5MB). Free memory was 88.9MB in the beginning and 177.0MB in the end (delta: -88.1MB). Peak memory consumption was 25.6MB. Max. memory is 16.1GB. * CodeCheck took 5389.30ms. Allocated memory was 213.9MB in the beginning and 257.9MB in the end (delta: 44.0MB). Free memory was 177.0MB in the beginning and 216.0MB in the end (delta: -39.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Witness Printer took 125.06ms. Allocated memory is still 257.9MB. Free memory was 216.0MB in the beginning and 210.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-11 23:54:30,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc36465-aeda-4c98-afc8-f4ccaf53cf9d/bin/ukojak-verify-0OAaufAVZV/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 Result: TRUE