./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:27:46,329 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:27:46,428 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:27:46,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:27:46,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:27:46,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:27:46,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:27:46,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:27:46,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:27:46,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:27:46,470 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:27:46,470 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:27:46,471 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:27:46,471 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:27:46,471 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:27:46,471 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:27:46,471 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:27:46,471 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:27:46,471 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:27:46,471 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:27:46,471 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:27:46,472 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:27:46,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:27:46,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:27:46,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:27:46,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:27:46,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:27:46,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:27:46,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:27:46,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:27:46,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:27:46,473 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:27:46,473 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:27:46,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:27:46,473 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:27:46,473 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:27:46,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:27:46,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:27:46,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:27:46,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:27:46,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:27:46,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:27:46,476 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:27:46,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:27:46,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:27:46,477 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:27:46,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:27:46,477 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 [2024-11-14 05:27:46,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:27:46,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:27:46,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:27:46,773 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:27:46,774 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:27:46,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i Unable to find full path for "g++" [2024-11-14 05:27:48,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:27:48,973 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:27:48,974 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2024-11-14 05:27:48,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/data/0684340b4/03c48ace837c432086de6250cfcd9521/FLAG7a23c6950 [2024-11-14 05:27:48,996 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/data/0684340b4/03c48ace837c432086de6250cfcd9521 [2024-11-14 05:27:48,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:27:49,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:27:49,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:27:49,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:27:49,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:27:49,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:27:48" (1/1) ... [2024-11-14 05:27:49,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36220adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49, skipping insertion in model container [2024-11-14 05:27:49,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:27:48" (1/1) ... [2024-11-14 05:27:49,023 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:27:49,183 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i[815,828] [2024-11-14 05:27:49,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:27:49,217 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:27:49,228 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i[815,828] [2024-11-14 05:27:49,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:27:49,265 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:27:49,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49 WrapperNode [2024-11-14 05:27:49,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:27:49,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:27:49,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:27:49,268 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:27:49,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,303 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-14 05:27:49,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:27:49,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:27:49,306 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:27:49,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:27:49,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:27:49,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:27:49,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:27:49,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:27:49,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (1/1) ... [2024-11-14 05:27:49,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:27:49,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:49,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:27:49,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:27:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:27:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:27:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:27:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 05:27:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:27:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:27:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 05:27:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:27:49,526 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:27:49,529 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:27:49,770 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-14 05:27:49,770 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:27:49,895 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:27:49,897 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:27:49,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:27:49 BoogieIcfgContainer [2024-11-14 05:27:49,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:27:49,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:27:49,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:27:49,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:27:49,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:27:48" (1/3) ... [2024-11-14 05:27:49,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb5fa55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:27:49, skipping insertion in model container [2024-11-14 05:27:49,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:27:49" (2/3) ... [2024-11-14 05:27:49,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb5fa55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:27:49, skipping insertion in model container [2024-11-14 05:27:49,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:27:49" (3/3) ... [2024-11-14 05:27:49,912 INFO L112 eAbstractionObserver]: Analyzing ICFG array_single_elem_init.i [2024-11-14 05:27:49,931 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:27:49,933 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG array_single_elem_init.i that has 1 procedures, 10 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 05:27:49,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:27:50,014 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d84b360, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:27:50,016 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:27:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 05:27:50,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:50,027 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 05:27:50,027 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:27:50,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:50,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1389197746, now seen corresponding path program 1 times [2024-11-14 05:27:50,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:50,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30692316] [2024-11-14 05:27:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:27:50,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:50,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30692316] [2024-11-14 05:27:50,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30692316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:27:50,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:27:50,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:27:50,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560018720] [2024-11-14 05:27:50,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:27:50,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:27:50,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:27:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:27:50,268 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:50,315 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2024-11-14 05:27:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:27:50,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 05:27:50,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:50,324 INFO L225 Difference]: With dead ends: 22 [2024-11-14 05:27:50,326 INFO L226 Difference]: Without dead ends: 13 [2024-11-14 05:27:50,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:27:50,332 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:50,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:27:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-14 05:27:50,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-14 05:27:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-14 05:27:50,369 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2024-11-14 05:27:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:50,370 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-14 05:27:50,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:50,372 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-14 05:27:50,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 05:27:50,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:50,372 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:27:50,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:27:50,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:27:50,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:50,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1262769619, now seen corresponding path program 1 times [2024-11-14 05:27:50,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:50,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186545893] [2024-11-14 05:27:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:50,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:27:50,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:50,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186545893] [2024-11-14 05:27:50,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186545893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824569159] [2024-11-14 05:27:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:50,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:50,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:50,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:50,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:27:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:50,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:27:50,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:27:50,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:27:50,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824569159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:50,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [522349732] [2024-11-14 05:27:50,784 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-14 05:27:50,785 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:50,788 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:50,793 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:50,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:51,715 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:27:52,071 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '122#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (<= 2 |ULTIMATE.start_main_~#c~0#1.base|) (= 15000 |ULTIMATE.start_main_~i~0#1|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) 60000) 0)) (= |ULTIMATE.start_main_~#c~0#1.offset| 0))' at error location [2024-11-14 05:27:52,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:27:52,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:52,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-14 05:27:52,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856026006] [2024-11-14 05:27:52,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:52,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:27:52,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:52,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:27:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:27:52,075 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:52,156 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-11-14 05:27:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:27:52,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 05:27:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:52,157 INFO L225 Difference]: With dead ends: 32 [2024-11-14 05:27:52,157 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 05:27:52,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:27:52,159 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:52,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:27:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 05:27:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2024-11-14 05:27:52,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-14 05:27:52,167 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2024-11-14 05:27:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:52,168 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-14 05:27:52,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-14 05:27:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 05:27:52,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:52,169 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-14 05:27:52,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:27:52,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:52,374 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:27:52,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1444769102, now seen corresponding path program 2 times [2024-11-14 05:27:52,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:52,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870887686] [2024-11-14 05:27:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:52,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 05:27:52,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:52,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870887686] [2024-11-14 05:27:52,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870887686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:52,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156101105] [2024-11-14 05:27:52,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:27:52,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:52,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:52,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:52,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:27:52,753 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 05:27:52,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:27:52,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:27:52,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:27:52,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 05:27:52,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156101105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:52,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1988374696] [2024-11-14 05:27:52,879 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-14 05:27:52,883 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:52,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:52,883 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:52,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:53,558 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:27:53,671 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '301#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ 60000 |ULTIMATE.start_main_~#c~0#1.offset|)) 0)) (= 15000 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-14 05:27:53,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:27:53,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:53,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2024-11-14 05:27:53,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309709811] [2024-11-14 05:27:53,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:53,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:27:53,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:27:53,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=199, Unknown=1, NotChecked=0, Total=306 [2024-11-14 05:27:53,675 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:53,817 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-14 05:27:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:27:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-14 05:27:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:53,819 INFO L225 Difference]: With dead ends: 59 [2024-11-14 05:27:53,820 INFO L226 Difference]: Without dead ends: 47 [2024-11-14 05:27:53,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=199, Unknown=1, NotChecked=0, Total=306 [2024-11-14 05:27:53,822 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 49 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:53,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 12 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:27:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-14 05:27:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2024-11-14 05:27:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-11-14 05:27:53,832 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 16 [2024-11-14 05:27:53,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:53,833 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-11-14 05:27:53,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:53,834 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-11-14 05:27:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 05:27:53,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:53,835 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 5, 5, 1, 1, 1, 1, 1] [2024-11-14 05:27:53,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 05:27:54,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-14 05:27:54,041 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:27:54,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:54,042 INFO L85 PathProgramCache]: Analyzing trace with hash 310334536, now seen corresponding path program 3 times [2024-11-14 05:27:54,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:54,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287445678] [2024-11-14 05:27:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:54,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-14 05:27:54,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:54,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287445678] [2024-11-14 05:27:54,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287445678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:54,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983070450] [2024-11-14 05:27:54,589 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 05:27:54,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:54,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:54,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:54,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:27:54,772 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 05:27:54,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:27:54,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:27:54,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-14 05:27:54,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-14 05:27:54,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983070450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2059102880] [2024-11-14 05:27:54,967 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-14 05:27:54,968 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:54,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:54,968 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:54,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:55,334 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:27:55,437 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '635#(and (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ 60000 |ULTIMATE.start_main_~#c~0#1.offset|)) 0)) (= 15000 |ULTIMATE.start_main_~i~0#1|))' at error location [2024-11-14 05:27:55,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:27:55,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:55,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-14 05:27:55,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952377543] [2024-11-14 05:27:55,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:55,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 05:27:55,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 05:27:55,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=256, Unknown=1, NotChecked=0, Total=380 [2024-11-14 05:27:55,441 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:55,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:55,583 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2024-11-14 05:27:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:27:55,584 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-14 05:27:55,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:55,584 INFO L225 Difference]: With dead ends: 78 [2024-11-14 05:27:55,585 INFO L226 Difference]: Without dead ends: 57 [2024-11-14 05:27:55,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=256, Unknown=1, NotChecked=0, Total=380 [2024-11-14 05:27:55,586 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:55,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:27:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-14 05:27:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-14 05:27:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2024-11-14 05:27:55,593 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 31 [2024-11-14 05:27:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:55,593 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2024-11-14 05:27:55,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2024-11-14 05:27:55,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 05:27:55,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:55,595 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1] [2024-11-14 05:27:55,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 05:27:55,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:55,799 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:27:55,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:55,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1943953550, now seen corresponding path program 4 times [2024-11-14 05:27:55,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:55,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262132777] [2024-11-14 05:27:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:55,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-14 05:27:56,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262132777] [2024-11-14 05:27:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262132777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447898953] [2024-11-14 05:27:56,565 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 05:27:56,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:56,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:56,567 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:56,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:27:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:56,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:27:56,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:27:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-14 05:27:56,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:27:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-14 05:27:57,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447898953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:27:57,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1756504205] [2024-11-14 05:27:57,220 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-14 05:27:57,224 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:27:57,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:27:57,224 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:27:57,224 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:27:57,575 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:27:57,894 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1179#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (<= 2 |ULTIMATE.start_main_~#c~0#1.base|) (= 15000 |ULTIMATE.start_main_~i~0#1|) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) 60000) 0)) (= |ULTIMATE.start_main_~#c~0#1.offset| 0))' at error location [2024-11-14 05:27:57,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:27:57,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:27:57,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 29 [2024-11-14 05:27:57,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429356890] [2024-11-14 05:27:57,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:27:57,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-14 05:27:57,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:27:57,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-14 05:27:57,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=739, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:27:57,901 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:27:58,197 INFO L93 Difference]: Finished difference Result 153 states and 183 transitions. [2024-11-14 05:27:58,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-14 05:27:58,198 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-14 05:27:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:27:58,199 INFO L225 Difference]: With dead ends: 153 [2024-11-14 05:27:58,199 INFO L226 Difference]: Without dead ends: 111 [2024-11-14 05:27:58,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=451, Invalid=739, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 05:27:58,204 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 72 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:27:58,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 16 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:27:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-14 05:27:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2024-11-14 05:27:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2024-11-14 05:27:58,219 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 54 [2024-11-14 05:27:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:27:58,219 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2024-11-14 05:27:58,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.586206896551724) internal successors, (75), 29 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:27:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2024-11-14 05:27:58,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 05:27:58,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:27:58,221 INFO L215 NwaCegarLoop]: trace histogram [26, 14, 13, 13, 1, 1, 1, 1, 1] [2024-11-14 05:27:58,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:27:58,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:58,422 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:27:58,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:27:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1561901128, now seen corresponding path program 5 times [2024-11-14 05:27:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:27:58,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194522730] [2024-11-14 05:27:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:27:58,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:27:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:27:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-11-14 05:27:59,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:27:59,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194522730] [2024-11-14 05:27:59,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194522730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:27:59,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96829610] [2024-11-14 05:27:59,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:27:59,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:27:59,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:27:59,474 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:27:59,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9ea2d7-1325-4104-9dd6-31d4f460d677/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process