./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/id_trans.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/id_trans.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan --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 b2585982366e12850b78353d5a08eef796173b16 .................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 16:21:55,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:21:55,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:21:55,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:21:55,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:21:55,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:21:55,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:21:55,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:21:55,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:21:55,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:21:55,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:21:55,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:21:55,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:21:55,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:21:55,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:21:55,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:21:55,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:21:55,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:21:55,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:21:55,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:21:55,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:21:55,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:21:55,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:21:55,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:21:55,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:21:55,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:21:55,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:21:55,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:21:55,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:21:55,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:21:55,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:21:55,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:21:55,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:21:55,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:21:55,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:21:55,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:21:55,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:21:55,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:21:55,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:21:55,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:21:55,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:21:55,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:21:55,290 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:21:55,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:21:55,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:21:55,291 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:21:55,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:21:55,291 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:21:55,292 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:21:55,292 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:21:55,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:21:55,292 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:21:55,292 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:21:55,292 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:21:55,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:21:55,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:21:55,293 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:21:55,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:21:55,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:21:55,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:21:55,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:21:55,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:21:55,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:21:55,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:21:55,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:21:55,295 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:21:55,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:21:55,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:21:55,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:21:55,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:21:55,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:21:55,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:21:55,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:21:55,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:21:55,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:21:55,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:21:55,297 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:21:55,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:21:55,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:21:55,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:21:55,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:21:55,298 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-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2585982366e12850b78353d5a08eef796173b16 [2020-12-09 16:21:55,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:21:55,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:21:55,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:21:55,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:21:55,507 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:21:55,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/../../sv-benchmarks/c/loop-invgen/id_trans.i [2020-12-09 16:21:55,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/data/a280637e2/bb40c11248f44f4aac9d54e1940fefee/FLAG08f3eba9b [2020-12-09 16:21:55,906 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:21:55,907 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/sv-benchmarks/c/loop-invgen/id_trans.i [2020-12-09 16:21:55,911 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/data/a280637e2/bb40c11248f44f4aac9d54e1940fefee/FLAG08f3eba9b [2020-12-09 16:21:55,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/data/a280637e2/bb40c11248f44f4aac9d54e1940fefee [2020-12-09 16:21:55,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:21:55,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:21:55,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:21:55,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:21:55,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:21:55,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:21:55" (1/1) ... [2020-12-09 16:21:55,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9c2823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:55, skipping insertion in model container [2020-12-09 16:21:55,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:21:55" (1/1) ... [2020-12-09 16:21:55,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:21:55,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:21:56,068 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/sv-benchmarks/c/loop-invgen/id_trans.i[893,906] [2020-12-09 16:21:56,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:21:56,083 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:21:56,092 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/sv-benchmarks/c/loop-invgen/id_trans.i[893,906] [2020-12-09 16:21:56,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:21:56,105 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:21:56,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56 WrapperNode [2020-12-09 16:21:56,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:21:56,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:21:56,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:21:56,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:21:56,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... [2020-12-09 16:21:56,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... [2020-12-09 16:21:56,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:21:56,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:21:56,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:21:56,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:21:56,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... [2020-12-09 16:21:56,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... [2020-12-09 16:21:56,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... [2020-12-09 16:21:56,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... [2020-12-09 16:21:56,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... [2020-12-09 16:21:56,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... [2020-12-09 16:21:56,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... [2020-12-09 16:21:56,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:21:56,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:21:56,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:21:56,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:21:56,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/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 [2020-12-09 16:21:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:21:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:21:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:21:56,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:21:56,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:21:56,370 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 16:21:56,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:21:56 BoogieIcfgContainer [2020-12-09 16:21:56,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:21:56,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:21:56,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:21:56,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:21:56,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:21:55" (1/3) ... [2020-12-09 16:21:56,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333f26c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:21:56, skipping insertion in model container [2020-12-09 16:21:56,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:21:56" (2/3) ... [2020-12-09 16:21:56,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333f26c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:21:56, skipping insertion in model container [2020-12-09 16:21:56,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:21:56" (3/3) ... [2020-12-09 16:21:56,378 INFO L111 eAbstractionObserver]: Analyzing ICFG id_trans.i [2020-12-09 16:21:56,388 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:21:56,391 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 16:21:56,399 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 16:21:56,416 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:21:56,416 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:21:56,416 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:21:56,416 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:21:56,416 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:21:56,417 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:21:56,417 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:21:56,417 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:21:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-09 16:21:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 16:21:56,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:21:56,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 16:21:56,431 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:21:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:21:56,435 INFO L82 PathProgramCache]: Analyzing trace with hash 91652109, now seen corresponding path program 1 times [2020-12-09 16:21:56,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:21:56,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771754791] [2020-12-09 16:21:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:21:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:21:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:21:56,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771754791] [2020-12-09 16:21:56,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:21:56,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:21:56,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203637835] [2020-12-09 16:21:56,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:21:56,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:21:56,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:21:56,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:21:56,590 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-12-09 16:21:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:21:56,643 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2020-12-09 16:21:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 16:21:56,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 16:21:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:21:56,650 INFO L225 Difference]: With dead ends: 41 [2020-12-09 16:21:56,650 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 16:21:56,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:21:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 16:21:56,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-12-09 16:21:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 16:21:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 16:21:56,674 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2020-12-09 16:21:56,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:21:56,674 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 16:21:56,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:21:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 16:21:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 16:21:56,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:21:56,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:21:56,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:21:56,675 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:21:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:21:56,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2116480816, now seen corresponding path program 1 times [2020-12-09 16:21:56,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:21:56,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125242346] [2020-12-09 16:21:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:21:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:21:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:21:56,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125242346] [2020-12-09 16:21:56,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:21:56,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:21:56,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879347422] [2020-12-09 16:21:56,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:21:56,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:21:56,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:21:56,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:21:56,716 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-12-09 16:21:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:21:56,748 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-09 16:21:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:21:56,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 16:21:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:21:56,749 INFO L225 Difference]: With dead ends: 16 [2020-12-09 16:21:56,749 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 16:21:56,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:21:56,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 16:21:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-12-09 16:21:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 16:21:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-09 16:21:56,752 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-12-09 16:21:56,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:21:56,753 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-09 16:21:56,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:21:56,753 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-09 16:21:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 16:21:56,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:21:56,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:21:56,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 16:21:56,754 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:21:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:21:56,754 INFO L82 PathProgramCache]: Analyzing trace with hash -482992074, now seen corresponding path program 1 times [2020-12-09 16:21:56,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:21:56,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655350225] [2020-12-09 16:21:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:21:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:21:56,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:21:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:21:56,802 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:21:56,817 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 16:21:56,817 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 16:21:56,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 16:21:56,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:21:56 BoogieIcfgContainer [2020-12-09 16:21:56,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:21:56,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:21:56,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:21:56,834 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:21:56,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:21:56" (3/4) ... [2020-12-09 16:21:56,836 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 16:21:56,862 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5ca09e5f-38d7-4cb5-b4b4-fae04f98ef2c/bin/utaipan/witness.graphml [2020-12-09 16:21:56,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:21:56,863 INFO L168 Benchmark]: Toolchain (without parser) took 937.58 ms. Allocated memory was 77.6 MB in the beginning and 117.4 MB in the end (delta: 39.8 MB). Free memory was 45.7 MB in the beginning and 35.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:21:56,864 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 77.6 MB. Free memory was 52.3 MB in the beginning and 52.3 MB in the end (delta: 24.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:21:56,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.44 ms. Allocated memory was 77.6 MB in the beginning and 117.4 MB in the end (delta: 39.8 MB). Free memory was 45.5 MB in the beginning and 94.4 MB in the end (delta: -48.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:21:56,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.84 ms. Allocated memory is still 117.4 MB. Free memory was 94.4 MB in the beginning and 93.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:21:56,865 INFO L168 Benchmark]: Boogie Preprocessor took 15.10 ms. Allocated memory is still 117.4 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:21:56,865 INFO L168 Benchmark]: RCFGBuilder took 225.67 ms. Allocated memory is still 117.4 MB. Free memory was 91.6 MB in the beginning and 76.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 16:21:56,866 INFO L168 Benchmark]: TraceAbstraction took 460.33 ms. Allocated memory is still 117.4 MB. Free memory was 75.5 MB in the beginning and 37.1 MB in the end (delta: 38.4 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-12-09 16:21:56,866 INFO L168 Benchmark]: Witness Printer took 28.15 ms. Allocated memory is still 117.4 MB. Free memory was 37.1 MB in the beginning and 35.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:21:56,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 77.6 MB. Free memory was 52.3 MB in the beginning and 52.3 MB in the end (delta: 24.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 179.44 ms. Allocated memory was 77.6 MB in the beginning and 117.4 MB in the end (delta: 39.8 MB). Free memory was 45.5 MB in the beginning and 94.4 MB in the end (delta: -48.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.84 ms. Allocated memory is still 117.4 MB. Free memory was 94.4 MB in the beginning and 93.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.10 ms. Allocated memory is still 117.4 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 225.67 ms. Allocated memory is still 117.4 MB. Free memory was 91.6 MB in the beginning and 76.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 460.33 ms. Allocated memory is still 117.4 MB. Free memory was 75.5 MB in the beginning and 37.1 MB in the end (delta: 38.4 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * Witness Printer took 28.15 ms. Allocated memory is still 117.4 MB. Free memory was 37.1 MB in the beginning and 35.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int idBitLength, material_length, nlen; [L26] int j, k; [L27] nlen = __VERIFIER_nondet_int() [L28] idBitLength = __VERIFIER_nondet_int() [L29] material_length = __VERIFIER_nondet_int() [L30] COND FALSE !(!( nlen == idBitLength / 32 )) [L31] j = 0 [L31] COND TRUE (j < idBitLength / 8) && (j < material_length) [L18] COND FALSE !(!(cond)) [L18] COND FALSE !(!(cond)) [L18] COND FALSE !(!(cond)) [L18] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 21 SDslu, 12 SDs, 0 SdLazy, 29 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...