./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum10.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_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum10.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/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 6c00c1225dae238bedea18c737f72ae44fea020a .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:49:25,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:49:25,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:49:25,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:49:25,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:49:25,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:49:25,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:49:25,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:49:25,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:49:25,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:49:25,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:49:25,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:49:25,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:49:25,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:49:25,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:49:25,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:49:25,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:49:25,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:49:25,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:49:25,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:49:25,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:49:25,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:49:25,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:49:25,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:49:25,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:49:25,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:49:25,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:49:25,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:49:25,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:49:25,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:49:25,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:49:25,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:49:25,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:49:25,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:49:25,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:49:25,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:49:25,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:49:25,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:49:25,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:49:25,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:49:25,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:49:25,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:49:25,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:49:25,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:49:25,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:49:25,324 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:49:25,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:49:25,324 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:49:25,324 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:49:25,324 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:49:25,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:49:25,325 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:49:25,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:49:25,325 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:49:25,325 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:49:25,325 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:49:25,325 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:49:25,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:49:25,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:49:25,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:49:25,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:49:25,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:49:25,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:49:25,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:49:25,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:49:25,327 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:49:25,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:49:25,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:49:25,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:49:25,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:49:25,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:49:25,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:49:25,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:49:25,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:49:25,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:49:25,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:49:25,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:49:25,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:49:25,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:49:25,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:49:25,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:49:25,329 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_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c00c1225dae238bedea18c737f72ae44fea020a [2020-12-09 05:49:25,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:49:25,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:49:25,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:49:25,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:49:25,513 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:49:25,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/../../sv-benchmarks/c/reducercommutativity/rangesum10.i [2020-12-09 05:49:25,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/data/2da1cc9bc/431c3c51fecf421ab0a8647a7bda144c/FLAGbaae4ef4c [2020-12-09 05:49:25,921 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:49:25,922 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/sv-benchmarks/c/reducercommutativity/rangesum10.i [2020-12-09 05:49:25,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/data/2da1cc9bc/431c3c51fecf421ab0a8647a7bda144c/FLAGbaae4ef4c [2020-12-09 05:49:25,937 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/data/2da1cc9bc/431c3c51fecf421ab0a8647a7bda144c [2020-12-09 05:49:25,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:49:25,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:49:25,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:49:25,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:49:25,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:49:25,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:49:25" (1/1) ... [2020-12-09 05:49:25,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f4174b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:25, skipping insertion in model container [2020-12-09 05:49:25,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:49:25" (1/1) ... [2020-12-09 05:49:25,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:49:25,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:49:26,084 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_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/sv-benchmarks/c/reducercommutativity/rangesum10.i[1465,1478] [2020-12-09 05:49:26,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:49:26,092 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:49:26,106 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_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/sv-benchmarks/c/reducercommutativity/rangesum10.i[1465,1478] [2020-12-09 05:49:26,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:49:26,117 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:49:26,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26 WrapperNode [2020-12-09 05:49:26,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:49:26,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:49:26,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:49:26,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:49:26,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... [2020-12-09 05:49:26,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... [2020-12-09 05:49:26,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:49:26,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:49:26,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:49:26,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:49:26,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... [2020-12-09 05:49:26,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... [2020-12-09 05:49:26,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... [2020-12-09 05:49:26,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... [2020-12-09 05:49:26,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... [2020-12-09 05:49:26,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... [2020-12-09 05:49:26,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... [2020-12-09 05:49:26,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:49:26,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:49:26,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:49:26,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:49:26,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/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 05:49:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:49:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:49:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 05:49:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:49:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:49:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 05:49:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:49:26,603 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:49:26,604 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 05:49:26,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:49:26 BoogieIcfgContainer [2020-12-09 05:49:26,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:49:26,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:49:26,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:49:26,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:49:26,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:49:25" (1/3) ... [2020-12-09 05:49:26,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df1d406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:49:26, skipping insertion in model container [2020-12-09 05:49:26,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:49:26" (2/3) ... [2020-12-09 05:49:26,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df1d406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:49:26, skipping insertion in model container [2020-12-09 05:49:26,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:49:26" (3/3) ... [2020-12-09 05:49:26,613 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum10.i [2020-12-09 05:49:26,626 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:49:26,629 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:49:26,636 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:49:26,653 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:49:26,653 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:49:26,653 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:49:26,653 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:49:26,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:49:26,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:49:26,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:49:26,654 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:49:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 05:49:26,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:49:26,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:26,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:26,666 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:26,670 INFO L82 PathProgramCache]: Analyzing trace with hash -964703457, now seen corresponding path program 1 times [2020-12-09 05:49:26,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:26,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043284713] [2020-12-09 05:49:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:49:26,794 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 05:49:26,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043284713] [2020-12-09 05:49:26,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:49:26,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:49:26,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539920156] [2020-12-09 05:49:26,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:49:26,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:49:26,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:49:26,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:49:26,809 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-12-09 05:49:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:49:26,824 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2020-12-09 05:49:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:49:26,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 05:49:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:49:26,831 INFO L225 Difference]: With dead ends: 21 [2020-12-09 05:49:26,831 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 05:49:26,833 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 [2020-12-09 05:49:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 05:49:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 05:49:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 05:49:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2020-12-09 05:49:26,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2020-12-09 05:49:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:49:26,854 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-12-09 05:49:26,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:49:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2020-12-09 05:49:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 05:49:26,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:26,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:26,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:49:26,855 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:26,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2050331539, now seen corresponding path program 1 times [2020-12-09 05:49:26,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:26,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687650747] [2020-12-09 05:49:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:26,870 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:49:26,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197503646] [2020-12-09 05:49:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/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 [2020-12-09 05:49:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:49:26,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:49:26,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:49:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 05:49:26,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:49:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 05:49:26,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687650747] [2020-12-09 05:49:26,955 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:26,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197503646] [2020-12-09 05:49:26,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:49:26,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 05:49:26,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280639084] [2020-12-09 05:49:26,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:49:26,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:49:26,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:49:26,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:49:26,958 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2020-12-09 05:49:26,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:49:26,995 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2020-12-09 05:49:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:49:26,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 05:49:26,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:49:26,996 INFO L225 Difference]: With dead ends: 22 [2020-12-09 05:49:26,996 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 05:49:26,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:49:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 05:49:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 05:49:26,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 05:49:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-12-09 05:49:27,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2020-12-09 05:49:27,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:49:27,000 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-12-09 05:49:27,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:49:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-12-09 05:49:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 05:49:27,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:27,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:27,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 05:49:27,202 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:27,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:27,203 INFO L82 PathProgramCache]: Analyzing trace with hash -939408813, now seen corresponding path program 1 times [2020-12-09 05:49:27,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:27,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524479832] [2020-12-09 05:49:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:27,217 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:49:27,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262238805] [2020-12-09 05:49:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:49:27,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:49:27,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:49:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 05:49:27,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:49:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 05:49:27,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524479832] [2020-12-09 05:49:27,282 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:27,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262238805] [2020-12-09 05:49:27,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:49:27,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 05:49:27,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809478873] [2020-12-09 05:49:27,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:49:27,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:49:27,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:49:27,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:49:27,283 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2020-12-09 05:49:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:49:27,294 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2020-12-09 05:49:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:49:27,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 05:49:27,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:49:27,295 INFO L225 Difference]: With dead ends: 24 [2020-12-09 05:49:27,295 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 05:49:27,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:49:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 05:49:27,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 05:49:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 05:49:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-12-09 05:49:27,298 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2020-12-09 05:49:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:49:27,298 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-12-09 05:49:27,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:49:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-12-09 05:49:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 05:49:27,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:27,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:27,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:27,500 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1226876461, now seen corresponding path program 1 times [2020-12-09 05:49:27,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:27,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296081427] [2020-12-09 05:49:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:27,537 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:49:27,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098362381] [2020-12-09 05:49:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:49:27,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 05:49:27,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:49:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 05:49:27,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:49:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-09 05:49:27,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296081427] [2020-12-09 05:49:27,661 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:27,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098362381] [2020-12-09 05:49:27,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [652844407] [2020-12-09 05:49:27,676 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 05:49:27,676 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:49:27,679 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:49:27,683 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:49:27,684 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:49:28,327 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 149 [2020-12-09 05:49:29,048 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:29,313 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:29,569 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:29,678 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:29,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:29,770 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:29,971 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:29,994 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,079 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,144 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,424 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,435 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,522 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,530 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,685 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,765 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,771 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,818 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,872 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:30,882 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:31,059 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:49:31,395 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:31,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 05:49:31,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-12-09 05:49:31,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947093258] [2020-12-09 05:49:31,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:49:31,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:49:31,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:49:31,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-09 05:49:31,397 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2020-12-09 05:49:31,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:49:31,406 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-12-09 05:49:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:49:31,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-09 05:49:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:49:31,407 INFO L225 Difference]: With dead ends: 36 [2020-12-09 05:49:31,407 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 05:49:31,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-09 05:49:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 05:49:31,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 05:49:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 05:49:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-12-09 05:49:31,410 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2020-12-09 05:49:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:49:31,411 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-12-09 05:49:31,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:49:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-12-09 05:49:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 05:49:31,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:31,411 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:31,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:31,613 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:31,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:31,615 INFO L82 PathProgramCache]: Analyzing trace with hash -2012560801, now seen corresponding path program 2 times [2020-12-09 05:49:31,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:31,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876084417] [2020-12-09 05:49:31,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:31,657 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:49:31,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678256325] [2020-12-09 05:49:31,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:31,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 05:49:31,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:49:31,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 05:49:31,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:49:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 05:49:31,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:49:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 05:49:31,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876084417] [2020-12-09 05:49:31,802 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:31,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678256325] [2020-12-09 05:49:31,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2026769253] [2020-12-09 05:49:31,804 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 05:49:31,804 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:49:31,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:49:31,805 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:49:31,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:49:32,545 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:32,555 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:32,955 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,044 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,147 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,166 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,321 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,327 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,357 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,455 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,473 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,489 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,598 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,655 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,703 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,802 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:33,918 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:49:34,258 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:34,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 05:49:34,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-09 05:49:34,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735594550] [2020-12-09 05:49:34,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 05:49:34,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:49:34,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 05:49:34,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-09 05:49:34,260 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2020-12-09 05:49:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:49:34,313 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-12-09 05:49:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 05:49:34,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-09 05:49:34,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:49:34,314 INFO L225 Difference]: With dead ends: 45 [2020-12-09 05:49:34,314 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 05:49:34,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-09 05:49:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 05:49:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 05:49:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 05:49:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-09 05:49:34,318 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-12-09 05:49:34,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:49:34,318 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-09 05:49:34,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 05:49:34,319 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-09 05:49:34,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 05:49:34,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:34,319 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:34,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:34,521 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:34,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1378594271, now seen corresponding path program 3 times [2020-12-09 05:49:34,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:34,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715296441] [2020-12-09 05:49:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:34,561 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:49:34,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387288924] [2020-12-09 05:49:34,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:34,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 05:49:34,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:49:34,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 05:49:34,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:49:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-09 05:49:34,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:49:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-09 05:49:34,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715296441] [2020-12-09 05:49:34,707 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:34,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387288924] [2020-12-09 05:49:34,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [629047341] [2020-12-09 05:49:34,709 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 05:49:34,709 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:49:34,709 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:49:34,710 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:49:34,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:49:35,506 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,526 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,556 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,569 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,592 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,614 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,711 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,722 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,851 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,888 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:35,937 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:36,121 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:49:36,473 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:36,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 05:49:36,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-12-09 05:49:36,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960179192] [2020-12-09 05:49:36,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 05:49:36,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:49:36,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 05:49:36,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-09 05:49:36,474 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 12 states. [2020-12-09 05:49:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:49:36,541 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2020-12-09 05:49:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 05:49:36,542 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-12-09 05:49:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:49:36,542 INFO L225 Difference]: With dead ends: 65 [2020-12-09 05:49:36,542 INFO L226 Difference]: Without dead ends: 45 [2020-12-09 05:49:36,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-09 05:49:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-09 05:49:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-09 05:49:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-09 05:49:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-12-09 05:49:36,547 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 32 [2020-12-09 05:49:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:49:36,547 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-12-09 05:49:36,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 05:49:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-12-09 05:49:36,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-09 05:49:36,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:36,548 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:36,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-12-09 05:49:36,750 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash 373545311, now seen corresponding path program 4 times [2020-12-09 05:49:36,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:36,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705935257] [2020-12-09 05:49:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:36,799 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:49:36,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463196401] [2020-12-09 05:49:36,799 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:49:36,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 05:49:36,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:49:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-12-09 05:49:36,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:49:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-12-09 05:49:36,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705935257] [2020-12-09 05:49:36,957 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:36,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463196401] [2020-12-09 05:49:36,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [929448422] [2020-12-09 05:49:36,958 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 05:49:36,958 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:49:36,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:49:36,959 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:49:36,959 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:49:37,696 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,243 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,319 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,335 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,351 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,487 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,634 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,664 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,771 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,795 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,802 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,807 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,832 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,904 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:38,910 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:39,046 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:39,073 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:39,093 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:39,216 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:49:39,561 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:39,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 05:49:39,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 05:49:39,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808538143] [2020-12-09 05:49:39,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 05:49:39,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:49:39,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 05:49:39,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-09 05:49:39,563 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 12 states. [2020-12-09 05:49:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:49:39,580 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2020-12-09 05:49:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 05:49:39,580 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-12-09 05:49:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:49:39,581 INFO L225 Difference]: With dead ends: 90 [2020-12-09 05:49:39,581 INFO L226 Difference]: Without dead ends: 51 [2020-12-09 05:49:39,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-09 05:49:39,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-09 05:49:39,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-12-09 05:49:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-09 05:49:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-12-09 05:49:39,585 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 44 [2020-12-09 05:49:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:49:39,585 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-12-09 05:49:39,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 05:49:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-12-09 05:49:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-09 05:49:39,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:39,586 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:39,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:39,788 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:39,789 INFO L82 PathProgramCache]: Analyzing trace with hash 874144991, now seen corresponding path program 5 times [2020-12-09 05:49:39,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:39,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446419033] [2020-12-09 05:49:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:39,846 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:49:39,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363832773] [2020-12-09 05:49:39,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:39,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 05:49:39,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:49:39,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 05:49:39,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:49:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-12-09 05:49:39,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:49:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-12-09 05:49:39,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446419033] [2020-12-09 05:49:39,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:39,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363832773] [2020-12-09 05:49:39,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1318763605] [2020-12-09 05:49:39,958 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 05:49:39,958 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:49:39,958 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:49:39,958 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:49:39,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:49:40,428 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:40,681 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:40,781 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,026 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,183 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,240 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,338 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,401 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,433 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,470 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,520 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,529 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,535 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,566 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,638 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:41,737 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:49:42,067 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:42,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 05:49:42,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-09 05:49:42,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397027292] [2020-12-09 05:49:42,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 05:49:42,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:49:42,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 05:49:42,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-09 05:49:42,069 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-12-09 05:49:42,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:49:42,081 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-12-09 05:49:42,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 05:49:42,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-12-09 05:49:42,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:49:42,082 INFO L225 Difference]: With dead ends: 69 [2020-12-09 05:49:42,082 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 05:49:42,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-09 05:49:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 05:49:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-09 05:49:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 05:49:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-12-09 05:49:42,087 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 50 [2020-12-09 05:49:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:49:42,087 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-12-09 05:49:42,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 05:49:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-12-09 05:49:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-09 05:49:42,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:42,088 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:42,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:42,290 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:42,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1947618783, now seen corresponding path program 6 times [2020-12-09 05:49:42,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:42,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442909963] [2020-12-09 05:49:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:42,335 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:49:42,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528356662] [2020-12-09 05:49:42,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:42,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 05:49:42,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 05:49:42,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 05:49:42,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:49:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-12-09 05:49:42,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:49:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-12-09 05:49:42,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442909963] [2020-12-09 05:49:42,520 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:42,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528356662] [2020-12-09 05:49:42,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [923132167] [2020-12-09 05:49:42,521 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 05:49:42,521 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 05:49:42,522 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 05:49:42,522 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 05:49:42,522 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 05:49:43,014 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,073 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,082 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,146 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,181 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,186 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,222 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,229 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,234 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,407 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,470 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,515 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 05:49:43,630 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 05:49:43,987 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 05:49:43,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 05:49:43,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-12-09 05:49:43,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150428032] [2020-12-09 05:49:43,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 05:49:43,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:49:43,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 05:49:43,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-12-09 05:49:43,989 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 11 states. [2020-12-09 05:49:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:49:44,006 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-12-09 05:49:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 05:49:44,007 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-12-09 05:49:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:49:44,007 INFO L225 Difference]: With dead ends: 72 [2020-12-09 05:49:44,008 INFO L226 Difference]: Without dead ends: 58 [2020-12-09 05:49:44,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-12-09 05:49:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-09 05:49:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-09 05:49:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 05:49:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-12-09 05:49:44,012 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 54 [2020-12-09 05:49:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:49:44,012 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-12-09 05:49:44,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 05:49:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-12-09 05:49:44,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-09 05:49:44,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:49:44,013 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:49:44,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2020-12-09 05:49:44,214 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:49:44,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:49:44,215 INFO L82 PathProgramCache]: Analyzing trace with hash -75361405, now seen corresponding path program 7 times [2020-12-09 05:49:44,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:49:44,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452973249] [2020-12-09 05:49:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:49:44,260 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 05:49:44,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740148325] [2020-12-09 05:49:44,261 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:49:44,947 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:49:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:49:45,504 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:49:45,903 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 05:49:45,904 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 05:49:46,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 05:49:46,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:49:46 BoogieIcfgContainer [2020-12-09 05:49:46,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:49:46,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:49:46,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:49:46,164 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:49:46,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:49:26" (3/4) ... [2020-12-09 05:49:46,166 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 05:49:46,209 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7f13c8f6-8a02-4ef0-8070-3dd43974f8b1/bin/utaipan/witness.graphml [2020-12-09 05:49:46,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:49:46,210 INFO L168 Benchmark]: Toolchain (without parser) took 20269.04 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 62.9 MB in the beginning and 66.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 99.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:49:46,210 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:49:46,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.37 ms. Allocated memory is still 92.3 MB. Free memory was 62.7 MB in the beginning and 68.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:49:46,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.54 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 66.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:49:46,211 INFO L168 Benchmark]: Boogie Preprocessor took 26.01 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 65.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:49:46,211 INFO L168 Benchmark]: RCFGBuilder took 425.84 ms. Allocated memory is still 92.3 MB. Free memory was 65.0 MB in the beginning and 58.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:49:46,211 INFO L168 Benchmark]: TraceAbstraction took 19556.70 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 57.9 MB in the beginning and 73.3 MB in the end (delta: -15.4 MB). Peak memory consumption was 88.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:49:46,212 INFO L168 Benchmark]: Witness Printer took 45.06 ms. Allocated memory is still 195.0 MB. Free memory was 73.3 MB in the beginning and 66.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:49:46,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 92.3 MB. Free memory is still 57.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 175.37 ms. Allocated memory is still 92.3 MB. Free memory was 62.7 MB in the beginning and 68.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.54 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 66.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.01 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 65.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 425.84 ms. Allocated memory is still 92.3 MB. Free memory was 65.0 MB in the beginning and 58.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19556.70 ms. Allocated memory was 92.3 MB in the beginning and 195.0 MB in the end (delta: 102.8 MB). Free memory was 57.9 MB in the beginning and 73.3 MB in the end (delta: -15.4 MB). Peak memory consumption was 88.4 MB. Max. memory is 16.1 GB. * Witness Printer took 45.06 ms. Allocated memory is still 195.0 MB. Free memory was 73.3 MB in the beginning and 66.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[10]; [L16] int i; [L17] i = 0 [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND FALSE !(i < 10) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 10) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 10) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND FALSE !(i<10 -1) [L57] x[10 -1] = temp [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND FALSE !(i > 10/2) [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 10 [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 10) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.4s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 0 SDslu, 165 SDs, 0 SdLazy, 137 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 685 GetRequests, 597 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=9, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 306 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 473 ConstructedInterpolants, 0 QuantifiedInterpolants, 22101 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1510 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 1410/1528 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...