./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire --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 ea5a8604b55ac7b733e3a58d5b1561195fe1a5472f19acdcc847503296ba06a2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:29:09,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:29:09,241 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:29:09,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:29:09,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:29:09,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:29:09,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:29:09,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:29:09,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:29:09,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:29:09,303 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:29:09,303 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:29:09,304 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:29:09,306 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:29:09,306 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:29:09,307 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:29:09,307 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:29:09,307 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:29:09,308 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:29:09,308 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:29:09,309 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:29:09,309 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:29:09,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:29:09,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:29:09,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:29:09,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:29:09,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:29:09,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:29:09,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:29:09,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:29:09,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:29:09,315 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:29:09,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:29:09,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:29:09,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:29:09,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:29:09,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:29:09,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:09,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:29:09,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:29:09,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:29:09,318 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:29:09,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:29:09,319 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:29:09,319 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:29:09,319 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:29:09,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:29:09,320 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea5a8604b55ac7b733e3a58d5b1561195fe1a5472f19acdcc847503296ba06a2 [2023-11-23 21:29:09,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:29:09,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:29:09,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:29:09,724 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:29:09,724 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:29:09,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-5.i [2023-11-23 21:29:12,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:29:13,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:29:13,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-5.i [2023-11-23 21:29:13,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/data/16792bbf8/41f3a325069c496e93a146218d185bb7/FLAGe3d40c5cf [2023-11-23 21:29:13,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/data/16792bbf8/41f3a325069c496e93a146218d185bb7 [2023-11-23 21:29:13,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:29:13,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:29:13,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:13,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:29:13,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:29:13,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c140fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13, skipping insertion in model container [2023-11-23 21:29:13,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,298 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:29:13,490 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_f542b64d-d339-41db-9342-8f6b9547b929/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-5.i[914,927] [2023-11-23 21:29:13,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:13,557 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:29:13,576 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_f542b64d-d339-41db-9342-8f6b9547b929/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-5.i[914,927] [2023-11-23 21:29:13,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:29:13,644 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:29:13,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13 WrapperNode [2023-11-23 21:29:13,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:29:13,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:13,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:29:13,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:29:13,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,727 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2023-11-23 21:29:13,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:29:13,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:29:13,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:29:13,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:29:13,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:29:13,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:29:13,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:29:13,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:29:13,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (1/1) ... [2023-11-23 21:29:13,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:29:13,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:29:13,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:29:13,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:29:13,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:29:13,879 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:29:13,880 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:29:13,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:29:13,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:29:13,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:29:13,977 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:29:13,979 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:29:14,322 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:29:14,470 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:29:14,471 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:29:14,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:14 BoogieIcfgContainer [2023-11-23 21:29:14,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:29:14,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:29:14,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:29:14,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:29:14,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:29:13" (1/3) ... [2023-11-23 21:29:14,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abeb692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:14, skipping insertion in model container [2023-11-23 21:29:14,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:29:13" (2/3) ... [2023-11-23 21:29:14,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abeb692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:29:14, skipping insertion in model container [2023-11-23 21:29:14,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:14" (3/3) ... [2023-11-23 21:29:14,489 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-5.i [2023-11-23 21:29:14,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:29:14,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:29:14,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:29:14,567 INFO L357 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, mHoare=true, 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;@1ace5d66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:29:14,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:29:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:29:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 21:29:14,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:29:14,583 INFO L195 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:29:14,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:29:14,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:29:14,590 INFO L85 PathProgramCache]: Analyzing trace with hash 538565913, now seen corresponding path program 1 times [2023-11-23 21:29:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:29:14,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15509705] [2023-11-23 21:29:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:29:14,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:29:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:29:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-23 21:29:16,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:29:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15509705] [2023-11-23 21:29:16,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15509705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:29:16,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:29:16,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:29:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073054315] [2023-11-23 21:29:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:29:16,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:29:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:29:16,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:29:16,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:17,001 INFO L87 Difference]: Start difference. First operand has 30 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:29:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:29:17,073 INFO L93 Difference]: Finished difference Result 56 states and 85 transitions. [2023-11-23 21:29:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:29:17,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 53 [2023-11-23 21:29:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:29:17,083 INFO L225 Difference]: With dead ends: 56 [2023-11-23 21:29:17,083 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:29:17,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:29:17,093 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:29:17,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:29:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:29:17,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:29:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-23 21:29:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:29:17,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2023-11-23 21:29:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:29:17,122 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:29:17,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 21:29:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:29:17,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:29:17,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:29:17,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:29:17,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:29:17,161 INFO L902 garLoopResultBuilder]: At program point L64(line 64) the Hoare annotation is: true [2023-11-23 21:29:17,161 INFO L902 garLoopResultBuilder]: At program point L64-1(line 64) the Hoare annotation is: true [2023-11-23 21:29:17,161 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-23 21:29:17,162 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-23 21:29:17,162 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-11-23 21:29:17,162 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-11-23 21:29:17,162 INFO L902 garLoopResultBuilder]: At program point L73(line 73) the Hoare annotation is: true [2023-11-23 21:29:17,163 INFO L902 garLoopResultBuilder]: At program point L73-1(line 73) the Hoare annotation is: true [2023-11-23 21:29:17,164 INFO L899 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2023-11-23 21:29:17,164 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-23 21:29:17,165 INFO L902 garLoopResultBuilder]: At program point L82(line 82) the Hoare annotation is: true [2023-11-23 21:29:17,166 INFO L902 garLoopResultBuilder]: At program point L82-1(line 82) the Hoare annotation is: true [2023-11-23 21:29:17,166 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-11-23 21:29:17,166 INFO L902 garLoopResultBuilder]: At program point L70(line 70) the Hoare annotation is: true [2023-11-23 21:29:17,167 INFO L902 garLoopResultBuilder]: At program point L70-1(line 70) the Hoare annotation is: true [2023-11-23 21:29:17,167 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:29:17,168 INFO L902 garLoopResultBuilder]: At program point L95-2(lines 95 101) the Hoare annotation is: true [2023-11-23 21:29:17,168 INFO L899 garLoopResultBuilder]: For program point L83(lines 62 84) no Hoare annotation was computed. [2023-11-23 21:29:17,168 INFO L902 garLoopResultBuilder]: At program point L79(line 79) the Hoare annotation is: true [2023-11-23 21:29:17,169 INFO L902 garLoopResultBuilder]: At program point L79-1(line 79) the Hoare annotation is: true [2023-11-23 21:29:17,169 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:29:17,170 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2023-11-23 21:29:17,170 INFO L902 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: true [2023-11-23 21:29:17,170 INFO L902 garLoopResultBuilder]: At program point L67-1(line 67) the Hoare annotation is: true [2023-11-23 21:29:17,171 INFO L899 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2023-11-23 21:29:17,175 INFO L902 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: true [2023-11-23 21:29:17,176 INFO L902 garLoopResultBuilder]: At program point L76-1(line 76) the Hoare annotation is: true [2023-11-23 21:29:17,176 INFO L899 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2023-11-23 21:29:17,176 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-23 21:29:17,177 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-23 21:29:17,180 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:29:17,183 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:29:17,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:29:17 BoogieIcfgContainer [2023-11-23 21:29:17,195 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:29:17,196 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:29:17,197 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:29:17,197 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:29:17,197 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:29:14" (3/4) ... [2023-11-23 21:29:17,200 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:29:17,206 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-23 21:29:17,215 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-23 21:29:17,215 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-23 21:29:17,216 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 21:29:17,216 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:29:17,354 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:29:17,355 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:29:17,355 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:29:17,356 INFO L158 Benchmark]: Toolchain (without parser) took 4111.04ms. Allocated memory was 182.5MB in the beginning and 234.9MB in the end (delta: 52.4MB). Free memory was 150.4MB in the beginning and 154.5MB in the end (delta: -4.2MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2023-11-23 21:29:17,356 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 66.0MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:29:17,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.28ms. Allocated memory is still 182.5MB. Free memory was 150.4MB in the beginning and 137.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:29:17,362 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.10ms. Allocated memory is still 182.5MB. Free memory was 137.8MB in the beginning and 134.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:29:17,362 INFO L158 Benchmark]: Boogie Preprocessor took 57.43ms. Allocated memory is still 182.5MB. Free memory was 134.8MB in the beginning and 133.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:29:17,363 INFO L158 Benchmark]: RCFGBuilder took 687.39ms. Allocated memory is still 182.5MB. Free memory was 132.7MB in the beginning and 106.7MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 21:29:17,363 INFO L158 Benchmark]: TraceAbstraction took 2718.41ms. Allocated memory was 182.5MB in the beginning and 234.9MB in the end (delta: 52.4MB). Free memory was 106.3MB in the beginning and 159.8MB in the end (delta: -53.4MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2023-11-23 21:29:17,364 INFO L158 Benchmark]: Witness Printer took 159.16ms. Allocated memory is still 234.9MB. Free memory was 159.8MB in the beginning and 154.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:29:17,367 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 66.0MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.28ms. Allocated memory is still 182.5MB. Free memory was 150.4MB in the beginning and 137.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.10ms. Allocated memory is still 182.5MB. Free memory was 137.8MB in the beginning and 134.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.43ms. Allocated memory is still 182.5MB. Free memory was 134.8MB in the beginning and 133.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 687.39ms. Allocated memory is still 182.5MB. Free memory was 132.7MB in the beginning and 106.7MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2718.41ms. Allocated memory was 182.5MB in the beginning and 234.9MB in the end (delta: 52.4MB). Free memory was 106.3MB in the beginning and 159.8MB in the end (delta: -53.4MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. * Witness Printer took 159.16ms. Allocated memory is still 234.9MB. Free memory was 159.8MB in the beginning and 154.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 1, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 35 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 43 PreInvPairs, 58 NumberOfFragments, 16 HoareAnnotationTreeSize, 43 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 55 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 182/182 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 95]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-23 21:29:17,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f542b64d-d339-41db-9342-8f6b9547b929/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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