./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/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_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV --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 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-11 23:54:59,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-11 23:54:59,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-11 23:54:59,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-11 23:54:59,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-11 23:54:59,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-11 23:54:59,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-11 23:54:59,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-11 23:54:59,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-11 23:54:59,357 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-11 23:54:59,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-11 23:54:59,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-11 23:54:59,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-11 23:54:59,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-11 23:54:59,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-11 23:54:59,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-11 23:54:59,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-11 23:54:59,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-11 23:54:59,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-11 23:54:59,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-11 23:54:59,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-11 23:54:59,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-11 23:54:59,366 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-11 23:54:59,366 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-11 23:54:59,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-11 23:54:59,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:54:59,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-11 23:54:59,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-11 23:54:59,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-11 23:54:59,370 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-11 23:54:59,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-11 23:54:59,372 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-11 23:54:59,372 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_bb13e533-cf4f-4de5-a824-326869bd525c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 [2023-11-11 23:54:59,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-11 23:54:59,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-11 23:54:59,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-11 23:54:59,767 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-11 23:54:59,768 INFO L274 PluginConnector]: CDTParser initialized [2023-11-11 23:54:59,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/../../sv-benchmarks/c/loop-acceleration/array_3-1.i [2023-11-11 23:55:02,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-11 23:55:03,097 INFO L384 CDTParser]: Found 1 translation units. [2023-11-11 23:55:03,098 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/sv-benchmarks/c/loop-acceleration/array_3-1.i [2023-11-11 23:55:03,150 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/data/ebf3fc5dd/5bc473c5d58b44a8a651f2264562b427/FLAGbf85cdf63 [2023-11-11 23:55:03,178 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/data/ebf3fc5dd/5bc473c5d58b44a8a651f2264562b427 [2023-11-11 23:55:03,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-11 23:55:03,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-11 23:55:03,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-11 23:55:03,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-11 23:55:03,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-11 23:55:03,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d093d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03, skipping insertion in model container [2023-11-11 23:55:03,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,232 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-11 23:55:03,450 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_bb13e533-cf4f-4de5-a824-326869bd525c/sv-benchmarks/c/loop-acceleration/array_3-1.i[849,862] [2023-11-11 23:55:03,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:55:03,485 INFO L202 MainTranslator]: Completed pre-run [2023-11-11 23:55:03,501 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_bb13e533-cf4f-4de5-a824-326869bd525c/sv-benchmarks/c/loop-acceleration/array_3-1.i[849,862] [2023-11-11 23:55:03,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:55:03,530 INFO L206 MainTranslator]: Completed translation [2023-11-11 23:55:03,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03 WrapperNode [2023-11-11 23:55:03,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-11 23:55:03,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-11 23:55:03,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-11 23:55:03,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-11 23:55:03,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,573 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2023-11-11 23:55:03,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-11 23:55:03,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-11 23:55:03,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-11 23:55:03,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-11 23:55:03,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,598 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-11 23:55:03,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-11 23:55:03,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-11 23:55:03,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-11 23:55:03,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:55:03" (1/1) ... [2023-11-11 23:55:03,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:55:03,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/z3 [2023-11-11 23:55:03,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-11 23:55:03,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-11 23:55:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-11 23:55:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-11 23:55:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-11 23:55:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-11 23:55:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-11 23:55:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-11 23:55:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-11 23:55:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-11 23:55:03,835 INFO L236 CfgBuilder]: Building ICFG [2023-11-11 23:55:03,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-11 23:55:04,022 INFO L277 CfgBuilder]: Performing block encoding [2023-11-11 23:55:04,070 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-11 23:55:04,072 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-11 23:55:04,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:55:04 BoogieIcfgContainer [2023-11-11 23:55:04,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-11 23:55:04,076 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-11 23:55:04,076 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-11 23:55:04,087 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-11 23:55:04,087 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:55:04" (1/1) ... [2023-11-11 23:55:04,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-11 23:55:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:55:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 11 states and 15 transitions. [2023-11-11 23:55:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2023-11-11 23:55:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-11 23:55:04,184 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:55:04,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:55:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:55:04,364 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 23:55:04,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:55:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2023-11-11 23:55:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-11-11 23:55:04,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-11 23:55:04,418 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:55:04,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:55:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:55:04,556 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 23:55:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:55:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 12 states and 15 transitions. [2023-11-11 23:55:04,607 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2023-11-11 23:55:04,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-11 23:55:04,608 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:55:04,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:55:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:55:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:55:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:55:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 13 states and 17 transitions. [2023-11-11 23:55:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2023-11-11 23:55:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-11 23:55:04,827 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:55:04,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:55:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:55:04,964 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 23:55:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:55:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2023-11-11 23:55:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-11-11 23:55:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-11 23:55:05,023 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:55:05,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:55:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:55:05,108 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 23:55:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:55:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 24 transitions. [2023-11-11 23:55:05,210 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2023-11-11 23:55:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-11 23:55:05,214 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:55:05,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:55:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:55:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-11 23:55:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:55:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 21 states and 29 transitions. [2023-11-11 23:55:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2023-11-11 23:55:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-11 23:55:05,467 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:55:05,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:55:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:55:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-11 23:55:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:55:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 17 states and 25 transitions. [2023-11-11 23:55:05,751 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2023-11-11 23:55:05,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-11 23:55:05,752 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 8 iterations. [2023-11-11 23:55:05,762 INFO L753 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2023-11-11 23:55:05,833 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:55:05,837 INFO L560 CodeCheckObserver]: Invariant with dag size 3 [2023-11-11 23:55:05,840 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-11 23:55:05,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 11.11 11:55:05 ImpRootNode [2023-11-11 23:55:05,841 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-11 23:55:05,842 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-11 23:55:05,842 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-11 23:55:05,842 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-11 23:55:05,843 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:55:04" (3/4) ... [2023-11-11 23:55:05,845 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-11 23:55:05,852 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-11 23:55:05,853 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-11 23:55:05,853 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-11 23:55:05,853 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-11 23:55:05,958 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/witness.graphml [2023-11-11 23:55:05,959 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/bin/ukojak-verify-0OAaufAVZV/witness.yml [2023-11-11 23:55:05,959 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-11 23:55:05,960 INFO L158 Benchmark]: Toolchain (without parser) took 2772.97ms. Allocated memory is still 167.8MB. Free memory was 139.7MB in the beginning and 137.8MB in the end (delta: 1.9MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-11-11 23:55:05,960 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 130.0MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:55:05,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.90ms. Allocated memory is still 167.8MB. Free memory was 139.5MB in the beginning and 133.1MB in the end (delta: 6.4MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2023-11-11 23:55:05,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.69ms. Allocated memory is still 167.8MB. Free memory was 133.1MB in the beginning and 131.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:55:05,961 INFO L158 Benchmark]: Boogie Preprocessor took 52.00ms. Allocated memory is still 167.8MB. Free memory was 131.0MB in the beginning and 130.1MB in the end (delta: 840.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:55:05,962 INFO L158 Benchmark]: RCFGBuilder took 447.54ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 128.5MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-11 23:55:05,962 INFO L158 Benchmark]: CodeCheck took 1765.17ms. Allocated memory is still 167.8MB. Free memory was 128.5MB in the beginning and 137.2MB in the end (delta: -8.6MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. [2023-11-11 23:55:05,963 INFO L158 Benchmark]: Witness Printer took 117.44ms. Allocated memory is still 167.8MB. Free memory was 137.1MB in the beginning and 137.8MB in the end (delta: -708.2kB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2023-11-11 23:55:05,965 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 216 IncrementalHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 77 mSDtfsCounter, 216 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 526 GetRequests, 503 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 106 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 21/25 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: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (i <= 1023) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 130.0MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.90ms. Allocated memory is still 167.8MB. Free memory was 139.5MB in the beginning and 133.1MB in the end (delta: 6.4MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.69ms. Allocated memory is still 167.8MB. Free memory was 133.1MB in the beginning and 131.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.00ms. Allocated memory is still 167.8MB. Free memory was 131.0MB in the beginning and 130.1MB in the end (delta: 840.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 447.54ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 128.5MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * CodeCheck took 1765.17ms. Allocated memory is still 167.8MB. Free memory was 128.5MB in the beginning and 137.2MB in the end (delta: -8.6MB). Peak memory consumption was 70.8MB. Max. memory is 16.1GB. * Witness Printer took 117.44ms. Allocated memory is still 167.8MB. Free memory was 137.1MB in the beginning and 137.8MB in the end (delta: -708.2kB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-11 23:55:05,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb13e533-cf4f-4de5-a824-326869bd525c/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