./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --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 cd82e87d04e0f7b50b2cbc6595c4c8c661078ee2 ........................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:28,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:28,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:28,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:28,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:28,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:28,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:28,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:28,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:28,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:28,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:28,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:28,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:28,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:28,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:28,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:28,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:28,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:28,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:28,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:28,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:28,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:28,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:28,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:28,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:28,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:28,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:28,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:28,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:28,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:28,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:28,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:28,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:28,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:28,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:28,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:28,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:28,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:28,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:28,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:28,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:28,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:28,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:28,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:28,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:28,512 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:28,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:28,513 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:28,513 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:28,513 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:28,519 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:28,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:28,521 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:28,521 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:28,521 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:28,522 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:28,522 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:28,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:28,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:28,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:28,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:28,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:28,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:28,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:28,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:28,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:28,525 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:28,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:28,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:28,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:28,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:28,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:28,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:28,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:28,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:28,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:28,528 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:28,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:28,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:28,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:28,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:28,529 INFO L138 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_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd82e87d04e0f7b50b2cbc6595c4c8c661078ee2 [2021-10-11 02:23:28,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:28,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:28,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:28,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:28,866 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:28,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-acceleration/underapprox_2-2.c [2021-10-11 02:23:28,932 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/data/b750886e2/df1dc7d03d284ba58394bd6c9b0e8efe/FLAG59b3b4bba [2021-10-11 02:23:29,484 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:29,484 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/sv-benchmarks/c/loop-acceleration/underapprox_2-2.c [2021-10-11 02:23:29,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/data/b750886e2/df1dc7d03d284ba58394bd6c9b0e8efe/FLAG59b3b4bba [2021-10-11 02:23:29,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/data/b750886e2/df1dc7d03d284ba58394bd6c9b0e8efe [2021-10-11 02:23:29,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:29,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:29,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:29,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:29,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:29,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:29" (1/1) ... [2021-10-11 02:23:29,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a422653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:29, skipping insertion in model container [2021-10-11 02:23:29,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:29" (1/1) ... [2021-10-11 02:23:29,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:29,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:30,143 WARN L226 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_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/sv-benchmarks/c/loop-acceleration/underapprox_2-2.c[327,340] [2021-10-11 02:23:30,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:30,174 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:30,189 WARN L226 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_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/sv-benchmarks/c/loop-acceleration/underapprox_2-2.c[327,340] [2021-10-11 02:23:30,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:30,208 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:30,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30 WrapperNode [2021-10-11 02:23:30,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:30,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:30,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:30,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:30,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... [2021-10-11 02:23:30,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... [2021-10-11 02:23:30,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:30,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:30,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:30,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:30,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... [2021-10-11 02:23:30,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... [2021-10-11 02:23:30,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... [2021-10-11 02:23:30,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... [2021-10-11 02:23:30,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... [2021-10-11 02:23:30,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... [2021-10-11 02:23:30,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... [2021-10-11 02:23:30,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:30,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:30,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:30,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:30,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:30,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:30,632 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:23:30,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:30 BoogieIcfgContainer [2021-10-11 02:23:30,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:30,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:30,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:30,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:30,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:29" (1/3) ... [2021-10-11 02:23:30,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5514671d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:30, skipping insertion in model container [2021-10-11 02:23:30,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:30" (2/3) ... [2021-10-11 02:23:30,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5514671d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:30, skipping insertion in model container [2021-10-11 02:23:30,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:30" (3/3) ... [2021-10-11 02:23:30,642 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2021-10-11 02:23:30,673 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:30,676 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:30,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:30,745 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:30,759 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:30,760 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:30,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:30,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:30,760 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:30,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:30,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:30,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2021-10-11 02:23:30,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:23:30,777 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:30,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:23:30,778 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:30,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:30,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1818790, now seen corresponding path program 1 times [2021-10-11 02:23:30,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:30,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095364763] [2021-10-11 02:23:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:31,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095364763] [2021-10-11 02:23:31,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:31,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:31,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308821917] [2021-10-11 02:23:31,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:31,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:31,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:31,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:31,069 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2021-10-11 02:23:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:31,106 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-11 02:23:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:31,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:23:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:31,150 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:23:31,150 INFO L226 Difference]: Without dead ends: 6 [2021-10-11 02:23:31,153 INFO L677 BasicCegarLoop]: 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 [2021-10-11 02:23:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-11 02:23:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-11 02:23:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 02:23:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-11 02:23:31,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-10-11 02:23:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:31,221 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-11 02:23:31,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-11 02:23:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:23:31,222 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:31,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:23:31,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:31,223 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:31,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:31,228 INFO L82 PathProgramCache]: Analyzing trace with hash 55770291, now seen corresponding path program 1 times [2021-10-11 02:23:31,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:31,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889961874] [2021-10-11 02:23:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:31,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889961874] [2021-10-11 02:23:31,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316948181] [2021-10-11 02:23:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:31,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:23:31,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:31,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:31,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [24375198] [2021-10-11 02:23:31,605 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-11 02:23:31,605 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:31,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:31,617 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:31,617 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:32,162 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:32,290 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-10-11 02:23:32,506 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:32,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:23:32,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 7 [2021-10-11 02:23:32,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119117] [2021-10-11 02:23:32,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:23:32,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:32,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:23:32,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:23:32,513 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 8 states. [2021-10-11 02:23:32,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:32,596 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2021-10-11 02:23:32,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:23:32,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 5 [2021-10-11 02:23:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:32,598 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:23:32,601 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:32,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:23:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:32,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:32,607 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-11 02:23:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:32,607 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:32,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:23:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:32,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:32,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:23:32,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:23:32,855 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:23:32,864 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-11 02:23:32,868 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:23:32,868 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-10-11 02:23:32,869 INFO L258 CegarLoopResult]: At program point L16-2(lines 16 19) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~x~0 4294967296))) (or (= 6 .cse0) (< .cse0 6))) [2021-10-11 02:23:32,870 INFO L262 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-11 02:23:32,870 INFO L265 CegarLoopResult]: At program point L6-2(lines 1 22) the Hoare annotation is: true [2021-10-11 02:23:32,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:32 BoogieIcfgContainer [2021-10-11 02:23:32,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:32,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:32,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:32,888 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:32,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:30" (3/4) ... [2021-10-11 02:23:32,891 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:32,912 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:23:32,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:23:32,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:32,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:32,949 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b880cf9-dbb6-4d1f-95a4-db50d960ff2a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:32,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:32,950 INFO L168 Benchmark]: Toolchain (without parser) took 3095.90 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 52.9 MB in the beginning and 44.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:32,951 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 68.9 MB in the beginning and 68.9 MB in the end (delta: 52.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:32,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.69 ms. Allocated memory is still 88.1 MB. Free memory was 52.6 MB in the beginning and 65.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:32,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 88.1 MB. Free memory was 65.4 MB in the beginning and 63.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:32,953 INFO L168 Benchmark]: Boogie Preprocessor took 30.53 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 62.9 MB in the end (delta: 985.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:32,954 INFO L168 Benchmark]: RCFGBuilder took 350.57 ms. Allocated memory is still 88.1 MB. Free memory was 62.9 MB in the beginning and 50.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:32,954 INFO L168 Benchmark]: TraceAbstraction took 2251.49 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 49.7 MB in the beginning and 47.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:32,955 INFO L168 Benchmark]: Witness Printer took 61.68 ms. Allocated memory is still 109.1 MB. Free memory was 47.2 MB in the beginning and 44.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:32,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 68.9 MB in the beginning and 68.9 MB in the end (delta: 52.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.69 ms. Allocated memory is still 88.1 MB. Free memory was 52.6 MB in the beginning and 65.4 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 88.1 MB. Free memory was 65.4 MB in the beginning and 63.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.53 ms. Allocated memory is still 88.1 MB. Free memory was 63.9 MB in the beginning and 62.9 MB in the end (delta: 985.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 350.57 ms. Allocated memory is still 88.1 MB. Free memory was 62.9 MB in the beginning and 50.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2251.49 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 49.7 MB in the beginning and 47.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. * Witness Printer took 61.68 ms. Allocated memory is still 109.1 MB. Free memory was 47.2 MB in the beginning and 44.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 6 == x % 4294967296 || x % 4294967296 < 6 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 1 SDslu, 5 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 235 SizeOfPredicates, 2 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...