./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_1b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_1b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9 --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 de4c7bf005639409d0c5506b91694c0a93e2905c64b2cd28aafb6e9617d859e5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 02:59:46,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 02:59:46,398 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-12-03 02:59:46,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 02:59:46,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 02:59:46,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 02:59:46,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 02:59:46,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 02:59:46,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 02:59:46,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 02:59:46,430 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 02:59:46,430 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 02:59:46,431 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 02:59:46,431 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 02:59:46,432 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 02:59:46,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 02:59:46,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 02:59:46,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 02:59:46,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 02:59:46,434 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 02:59:46,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 02:59:46,436 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 02:59:46,436 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 02:59:46,436 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 02:59:46,437 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 02:59:46,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 02:59:46,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:59:46,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 02:59:46,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 02:59:46,439 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 02:59:46,440 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 02:59:46,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 02:59:46,440 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 02:59:46,441 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_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de4c7bf005639409d0c5506b91694c0a93e2905c64b2cd28aafb6e9617d859e5 [2023-12-03 02:59:46,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 02:59:46,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 02:59:46,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 02:59:46,690 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 02:59:46,690 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 02:59:46,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/loop-simple/nested_1b.c [2023-12-03 02:59:49,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 02:59:49,521 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 02:59:49,522 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/sv-benchmarks/c/loop-simple/nested_1b.c [2023-12-03 02:59:49,529 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/data/a093a9c91/15e5f028f95444edb068b709df226ee9/FLAGec393242a [2023-12-03 02:59:49,543 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/data/a093a9c91/15e5f028f95444edb068b709df226ee9 [2023-12-03 02:59:49,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 02:59:49,547 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 02:59:49,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 02:59:49,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 02:59:49,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 02:59:49,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f0f802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49, skipping insertion in model container [2023-12-03 02:59:49,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,570 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 02:59:49,713 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_704826b0-8cd5-41d9-9d62-a43b48d057b9/sv-benchmarks/c/loop-simple/nested_1b.c[674,687] [2023-12-03 02:59:49,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:59:49,728 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 02:59:49,741 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_704826b0-8cd5-41d9-9d62-a43b48d057b9/sv-benchmarks/c/loop-simple/nested_1b.c[674,687] [2023-12-03 02:59:49,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:59:49,756 INFO L206 MainTranslator]: Completed translation [2023-12-03 02:59:49,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49 WrapperNode [2023-12-03 02:59:49,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 02:59:49,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 02:59:49,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 02:59:49,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 02:59:49,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,783 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-12-03 02:59:49,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 02:59:49,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 02:59:49,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 02:59:49,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 02:59:49,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 02:59:49,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 02:59:49,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 02:59:49,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 02:59:49,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:59:49" (1/1) ... [2023-12-03 02:59:49,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:59:49,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 02:59:49,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 02:59:49,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 02:59:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 02:59:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 02:59:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 02:59:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 02:59:49,919 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 02:59:49,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 02:59:49,987 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 02:59:50,014 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 02:59:50,015 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 02:59:50,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:59:50 BoogieIcfgContainer [2023-12-03 02:59:50,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 02:59:50,017 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 02:59:50,018 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 02:59:50,028 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 02:59:50,028 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:59:50" (1/1) ... [2023-12-03 02:59:50,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 02:59:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:59:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-12-03 02:59:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-03 02:59:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 02:59:50,084 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:59:50,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:59:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:59:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:59:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:59:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2023-12-03 02:59:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-12-03 02:59:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-03 02:59:50,276 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:59:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:59:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:59:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:59:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:59:50,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2023-12-03 02:59:50,383 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2023-12-03 02:59:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-03 02:59:50,384 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:59:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:59:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:59:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:59:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:59:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2023-12-03 02:59:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-03 02:59:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 02:59:50,498 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:59:50,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:59:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:59:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:59:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:59:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2023-12-03 02:59:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-03 02:59:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-03 02:59:50,629 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:59:50,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:59:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:59:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:59:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:59:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2023-12-03 02:59:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-03 02:59:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-03 02:59:50,750 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:59:50,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:59:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:59:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:59:50,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:59:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2023-12-03 02:59:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-12-03 02:59:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-03 02:59:50,875 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:59:50,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:59:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:59:50,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 02:59:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:59:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:59:50,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 02:59:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:59:50,937 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2023-12-03 02:59:50,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 02:59:50 ImpRootNode [2023-12-03 02:59:50,957 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 02:59:50,958 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 02:59:50,958 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 02:59:50,958 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 02:59:50,958 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:59:50" (3/4) ... [2023-12-03 02:59:50,960 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-03 02:59:50,994 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-03 02:59:50,994 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 02:59:50,995 INFO L158 Benchmark]: Toolchain (without parser) took 1448.00ms. Allocated memory is still 144.7MB. Free memory was 108.0MB in the beginning and 93.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-12-03 02:59:50,996 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:59:50,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.27ms. Allocated memory is still 144.7MB. Free memory was 108.0MB in the beginning and 98.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-03 02:59:50,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.76ms. Allocated memory is still 144.7MB. Free memory was 98.0MB in the beginning and 96.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:59:50,997 INFO L158 Benchmark]: Boogie Preprocessor took 16.99ms. Allocated memory is still 144.7MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 02:59:50,998 INFO L158 Benchmark]: RCFGBuilder took 215.14ms. Allocated memory is still 144.7MB. Free memory was 95.4MB in the beginning and 86.3MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-03 02:59:50,998 INFO L158 Benchmark]: CodeCheck took 939.96ms. Allocated memory is still 144.7MB. Free memory was 85.8MB in the beginning and 95.1MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:59:50,999 INFO L158 Benchmark]: Witness Printer took 36.86ms. Allocated memory is still 144.7MB. Free memory was 95.1MB in the beginning and 93.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 02:59:51,002 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 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 18 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 287 GetRequests, 255 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 0/35 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: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int a = 6; [L19] a = 0 VAL [a=0] [L19] COND TRUE a < 6 [L19] ++a VAL [a=1] [L19] COND TRUE a < 6 [L19] ++a VAL [a=2] [L19] COND TRUE a < 6 [L19] ++a VAL [a=3] [L19] COND TRUE a < 6 [L19] ++a VAL [a=4] [L19] COND TRUE a < 6 [L19] ++a VAL [a=5] [L19] COND TRUE a < 6 [L19] ++a VAL [a=6] [L19] COND FALSE !(a < 6) VAL [a=6] [L22] COND TRUE a == 6 VAL [a=6] [L23] reach_error() VAL [a=6] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.27ms. Allocated memory is still 144.7MB. Free memory was 108.0MB in the beginning and 98.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.76ms. Allocated memory is still 144.7MB. Free memory was 98.0MB in the beginning and 96.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.99ms. Allocated memory is still 144.7MB. Free memory was 96.8MB in the beginning and 95.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 215.14ms. Allocated memory is still 144.7MB. Free memory was 95.4MB in the beginning and 86.3MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 939.96ms. Allocated memory is still 144.7MB. Free memory was 85.8MB in the beginning and 95.1MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 36.86ms. Allocated memory is still 144.7MB. Free memory was 95.1MB in the beginning and 93.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-12-03 02:59:51,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_704826b0-8cd5-41d9-9d62-a43b48d057b9/bin/ukojak-verify-Qdu7aM0XO9/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